Abstract: A display device includes first power supply terminal electrodes and second power supply terminal electrodes. The first power supply terminal electrodes in a first terminal portion of a frame area at least partially overlap, in a plan view, at least a part of the second power supply terminal electrodes in a second terminal portion of a flexible printed board. The second power supply terminal electrodes are electrically connected to the first power supply terminal electrodes. Either the first power supply terminal electrodes or the second power supply terminal electrodes are inclined from the others.

Abstract: In an organic EL display device including a proximity sensor, deterioration in display quality due to irradiation with IR light is suppressed. In a display period during which an image is displayed on a display unit, an emitting unit of the proximity sensor emits the IR light only in a period including a part of an IR light irradiation region turn-off period during which a plurality of light-emission control lines are driven such that no current is supplied to each of organic EL elements included in pixel circuits in a row corresponding to the IR light irradiation region, the period being before a time point at which the writing of a data signal into each of the pixel circuits in each of rows corresponding to the IR light irradiation region is started.

Abstract: In an organic EL display device including a proximity sensor, deterioration in display quality due to irradiation with IR light is suppressed. In the organic EL display device including the proximity sensor is provided with a light shielding unit that prevents a channel layer of a first initialization transistor from being irradiated with IR light, the first initialization transistor being provided in a pixel circuit in order to initialize a voltage that is applied to a control terminal of a drive transistor. The first initialization transistor preferably has a dual-gate structure. The first initialization transistor may have a LDD structure (including a one-side LDD structure).

Abstract: In an organic EL display device including a proximity sensor, deterioration in display quality due to irradiation with IR light is suppressed. In a display period during which an image is displayed on a display unit, an emitting unit of the proximity sensor emits the IR light only in a period including a part of an IR light irradiation region turn-off period during which a plurality of light-emission control lines are driven such that no current is supplied to each of organic EL elements included in pixel circuits in a row corresponding to the IR light irradiation region, the period being before a time point at which the writing of a data signal into each of the pixel circuits in each of rows corresponding to the IR light irradiation region is started.

Abstract: In an organic EL display device including a proximity sensor, deterioration in display quality due to irradiation with IR light is suppressed. In the organic EL display device including the proximity sensor is provided with a light shielding unit that prevents a channel layer of a first initialization transistor from being irradiated with IR light, the first initialization transistor being provided in a pixel circuit in order to initialize a voltage that is applied to a control terminal of a drive transistor. The first initialization transistor preferably has a dual-gate structure. The first initialization transistor may have a LDD structure (including a one-side LDD structure).

Abstract: A display device includes a plurality of sub-pixels. Each sub-pixel includes a light-emitting element, a write transistor connected to a data signal line, and a drive transistor that controls a current that flows through the light-emitting element. The plurality of sub-pixels arranged along a first data signal line include adjacent sub-pixels that emit different colors of light, and each include the write transistor having a conduction terminal electrically connected to the first data signal line. The plurality of sub-pixels arranged along a second data signal line include adjacent sub-pixels that emit different colors of light, and each include the write transistor having a conduction terminal electrically connected to the second data signal line.

Abstract: A display device includes first power supply terminal electrodes and second power supply terminal electrodes. The first power supply terminal electrodes in a first terminal portion of a frame area at least partially overlap, in a plan view, at least a part of the second power supply terminal electrodes in a second terminal portion of a flexible printed board. The second power supply terminal electrodes are electrically connected to the first power supply terminal electrodes. Either the first power supply terminal electrodes or the second power supply terminal electrodes are inclined from the others.

Abstract: In a display device having a non-rectangular display panel, when the display panel is divided into a rectangular region and a non-rectangular region by a boundary line extending in a same direction as scanning lines, light emission control lines are driven so that a length of a first non-light emission period in which pixel circuits in each row in the rectangular region are in a non-light emission state and a length of a second non-light emission period in which the pixel circuits in each row in the non-rectangular region are in the non-light emission state are different. With this, a luminance difference that occurs near a boundary between the rectangular region and the non-rectangular region is suppressed, and display quality is improved.

Abstract: In a display device having a non-rectangular display panel, when the display panel is divided into a rectangular region and a non-rectangular region by a boundary line extending in a same direction as scanning lines, light emission control lines are driven so that a length of a first non-light emission period in which pixel circuits in each row in the rectangular region are in a non-light emission state and a length of a second non-light emission period in which the pixel circuits in each row in the non-rectangular region are in the non-light emission state are different. With this, a luminance difference that occurs near a boundary between the rectangular region and the non-rectangular region is suppressed, and display quality is improved.

Abstract: A display device includes a plurality of sub-pixels. Each sub-pixel includes a light-emitting element, a write transistor connected to a data signal line, and a drive transistor that controls a current that flows through the light-emitting element. The plurality of sub-pixels arranged along a first data signal line include adjacent sub-pixels that emit different colors of light, and each include the write transistor having a conduction terminal electrically connected to the first data signal line. The plurality of sub-pixels arranged along a second data signal line include adjacent sub-pixels that emit different colors of light, and each include the write transistor having a conduction terminal electrically connected to the second data signal line.

Abstract: Provided is a pixel circuit including: an electro-optical element, a driving transistor; a writing control transistor whose first conduction terminal is connected to a data line and whose control terminal is connected to a scanning line; and an initialization transistor whose first conduction terminal is connected to a control terminal of the driving transistor, to whose second conduction terminal an initialization voltage is applied, and whose control terminal is connected to a first control line. In a case of a P-channel transistor, a high-level voltage to be given to the control terminal of the initialization transistor is lower than a high-level voltage to be given to the control terminal of the writing control transistor.

Abstract: Provided is a pixel circuit including: an electro-optical element, a driving transistor; a writing control transistor whose first conduction terminal is connected to a data line and whose control terminal is connected to a scanning line; and an initialization transistor whose first conduction terminal is connected to a control terminal of the driving transistor, to whose second conduction terminal an initialization voltage is applied, and whose control terminal is connected to a first control line. In a case of a P-channel transistor, a high-level voltage to be given to the control terminal of the initialization transistor is lower than a high-level voltage to be given to the control terminal of the writing control transistor.

Abstract: Image data having parts that change in sine wave shape or cosine wave shape in the horizontal direction and the vertical direction is used as current measurement patterns. A current measuring unit measures current flowing in a power source line from all of organic EL elements included in a display unit. A current distribution pattern generating unit generates a current distribution pattern by performing a two-dimensional inverse discrete Fourier transform on a plurality of current values measured when the current measurement patterns are displayed in order. An image signal correcting unit corrects an image signal on the basis of the current distribution pattern and a cumulative added value of an image signal. Accordingly, the extent of performance degradation of the organic EL elements is estimated, and uneven brightness in the display screen is prevented.

Abstract: Image data having parts that change in sine wave shape or cosine wave shape in the horizontal direction and the vertical direction is used as current measurement patterns. A current measuring unit measures current flowing in a power source line from all of organic EL elements included in a display unit. A current distribution pattern generating unit generates a current distribution pattern by performing a two-dimensional inverse discrete Fourier transform on a plurality of current values measured when the current measurement patterns are displayed in order. An image signal correcting unit corrects an image signal on the basis of the current distribution pattern and a cumulative added value of an image signal. Accordingly, the extent of performance degradation of the organic EL elements is estimated, and uneven brightness in the display screen is prevented.

Abstract: An organic EL display device includes: a pixel circuit drive unit configured to drive pixel circuits while performing a property measuring process in which a property of circuit elements is measured; a parameter table configured to store parameter values derived from monitoring data obtained in the property measuring process; a compensation computation unit configured to correct externally provided image data based on the parameter values stored in the parameter table, so as to generate a digital video signal to be fed to the pixel circuits; a temperature sensor configured to sense temperature; and a monitoring control section configured to control an execution frequency of the property measuring process in accordance with the sensed temperature. The monitoring control section increases the execution frequency of the property measuring process with an increase in the sensed temperature.

Abstract: In a current measurement period set in a pause period, a display device of the present invention applies measurement voltages to data lines (S1 to Sm) and measures currents outputted to monitoring lines (M1 to Mm) from m pixel circuits (18), and then applies data voltages generated corresponding to video signals to the data lines (S1 to Sm).

Abstract: A display device that is configured to include two independent shift registers and is capable of performing a monitoring process without causing the degradation of display quality or the occurrence of abnormal operation is implemented. In a display device including: a writing control shift register composed of a plurality of first unit circuits (30) each including a first boost circuit (320) and a first output node reset circuit (330); and a monitoring control shift register composed of a plurality of second unit circuits (40) each including a second boost circuit (420) and a second output node reset circuit (430), current drive capability of the first boost circuit (320) is higher than current drive capability of the second boost circuit (420), and current drive capability of the second output node reset circuit (430) is higher than current drive capability of the first output node reset circuit (330).

Abstract: A display device includes a display unit including multiple pixels, and a driving circuit that drives the display unit following a color assignation rule. The multiple pixels are classified into first through fourth groups such that groups to which the pixels belong are different from all groups to which pixels belong that are adjacent in eight directions, and pixels adjacent in 8 directions to pixels belonging to the same group, are of the same groups. The first through fourth colors are respectively assigned to the pixels of the first through fourth groups in the first subframe, the second through fourth and first colors are respectively assigned in the second subframe, the third, fourth, first, and second colors are respectively assigned in the third subframe, and the fourth and first through third colors are respectively assigned in the fourth subframe.

Abstract: An organic EL display device includes: a pixel circuit drive unit configured to drive pixel circuits while performing a property measuring process in which a property of circuit elements is measured; a parameter table configured to store parameter values derived from monitoring data obtained in the property measuring process; a compensation computation unit configured to correct externally provided image data based on the parameter values stored in the parameter table, so as to generate a digital video signal to be fed to the pixel circuits; a temperature sensor configured to sense temperature; and a monitoring control section configured to control an execution frequency of the property measuring process in accordance with the sensed temperature. The monitoring control section increases the execution frequency of the property measuring process with an increase in the sensed temperature.

Abstract: In a current measurement period set in a pause period, a display device of the present invention applies measurement voltages to data lines (S1 to Sm) and measures currents outputted to monitoring lines (M1 to Mm) from m pixel circuits (18), and then applies data voltages generated corresponding to video signals to the data lines (S1 to Sm).