TW201113851A - Pixel driving apparatus, light-emitting apparatus and drive controlling method for light-emitting apparatus - Google Patents

Abstract

A pixel drive apparatus to drive a pixel has a function of compensating a change in characteristics of the pixel. The pixel includes a light-emitting element and a drive control element to drive the light-emitting element. The pixel drive apparatus acquires an electrical characteristic parameter for compensating the variation of electrical characteristics of the light-emitting drive circuit including the drive control element based on a voltage value of the detection voltage after applying a voltage having a voltage value exceeding a threshold voltage across the drive control element to elapse of at least one relaxation time, and acquires a light-emitting characteristic parameter for compensating the variation of characteristics of the light-emitting element based on light-emitting luminance of the light-emitting element that is operated to emit light in accordance with luminance measurement image data corrected based on the electrical characteristic parameter.

Description

201113851 VI. Description of the invention: [Technical field to which the invention pertains] [Reciprocal reference of related application] The present invention is based on the application of the patent application No. 2009- 1 63602, 2009, filed on July 10, 2009. The Japanese Patent Application No. 2009-163609, filed on Jul. 10, and the Japanese Patent Application No. 2010-110932, filed on May 13 All of its contents are incorporated herein by reference. The present invention relates to a pixel driving device, a driving control method including the light-emitting device and the light-emitting device of the pixel driving device, and an electronic device including the light-emitting device. [Prior Art] In recent years, a light-emitting element type display device (light-emitting device) including a display panel (pixel array IJ) in which light-emitting elements are arranged in an array has been attracting attention as a display device next to a liquid crystal display device. As such a light-emitting element, for example, a current-driven light-emitting element such as an organic electroluminescence element, an inorganic electroluminescence element, or a light-emitting diode (LED) is known. In particular, in the light-emitting element type display device using the active array type driving method, compared with the well-known liquid crystal display device, the display response speed is fast, and there is almost no viewing angle dependency, and high brightness, high contrast, and display picture can be achieved. Excellent display characteristics such as high quality and fineness. Also, because of the illuminating; element; the display device of the yak $ does not need to have a backlight or a light guide plate as the liquid crystal display device does not need to be equipped with a backlight or a light guide plate, and it is characterized by being extremely thin and lightweight. Therefore, it is expected to be applied to various electronic devices in the future. For example, an organic electroluminescence display device described in Japanese Laid-Open Patent Publication No. Hei 8-330600 is known. The organic electroluminescence display device is an active array drive display device that is driven by a current signal according to a voltage signal, and a circuit (referred to as "pixel circuit" as appropriate) is provided for each pixel, and has a light-emitting structure composed of an organic electroluminescence device. a thin film transistor for current control, in which a gate is applied with a voltage signal corresponding to image data, and a current is caused to flow to the organic electroluminescent element: a thin film transistor for switching is used to supply a voltage signal corresponding to the image data. Switching to the gate of the thin film transistor for current control" In this organic electroluminescence display device based on the luminance gray scale of the light-emitting element of the voltage signal controller, the threshold voltage of the current control thin film transistor, etc. The change in time causes a change in the current 値 of the current flowing to the organic electroluminescent element. Further, in the pixel circuit in which a plurality of pixels arranged in an array shape are used, even if the threshold voltage of the thin film transistor for current control is the same, the gate insulating film or the channel length of the thin film transistor is changed, and the mobility is also deviated. The effect is so deviated in the drive characteristics. Here, it is known that variations in mobility, particularly in low-temperature polycrystalline germanium film transistors, occur remarkably. Therefore, although the mobility can be made uniform by using an amorphous germanium film transistor, even in this case, the influence of the deviation caused by the process cannot be avoided. Further, in the pixel circuit of each pixel, even if there is no variation in the driving characteristics of the thin film transistor, variations in the light-emitting characteristics due to process variations caused during the formation of the organic electroluminescent element occur. SUMMARY OF THE INVENTION The present invention has a pixel driving device capable of satisfactorily compensating for variations in characteristics of a pixel circuit and causing a light-emitting element to emit light at a desired luminance gray scale, a light-emitting device including the pixel driving device, and a driving control method of the light-emitting device The advantages. A pixel driving device of the present invention for obtaining the advantage, wherein the pixel is driven to have a light-emitting element; and the light-emitting driving circuit is a driving control element having a current path connected to the light-emitting element; the pixel driving device has characteristics The parameter acquisition circuit obtains an electrical characteristic parameter for compensating for fluctuations in electrical characteristics of the light-emitting drive circuit and an emission characteristic parameter for compensating for variations in characteristics of the light-emitting element. The characteristic parameter obtaining circuit applies a detecting voltage to a data line connected to the pixel, and applies a voltage exceeding a threshold voltage of the driving control element between the control terminal of the driving control element and one end of the current path. The voltage is obtained by obtaining the detection voltage of the data line after at least one relaxation time, and then obtaining the electrical characteristic parameter according to the voltage of the detection voltage. The characteristic parameter obtaining circuit obtains the light-emitting characteristic parameter ′ based on the light-emitting luminance of the light-emitting element of the pixel, and the light-emitting element of the pixel performs a light-emitting operation based on the image data for luminance measurement corrected based on the electrical characteristic parameter. 201113851 The light-emitting device of the present invention for obtaining the advantage includes the light-emitting panel having a plurality of data lines arranged along the first direction and at least one of the second direction intersecting the first direction. And a plurality of pixels connected to the data lines of the plurality of data lines and the scan lines, and disposed in the vicinity of the intersection of the data line and the scan line; and a driving circuit for driving the light-emitting panel. Each of the pixels has a light-emitting element; and the light-emitting drive circuit is a drive control element having one end of the current path connected to the light-emitting element. The driving circuit includes a scan driving circuit that applies a selection signal to the scanning line, and sets each pixel connected to the scanning line to a selected state, and a characteristic parameter obtaining circuit that is configured to be set by the scanning line driving circuit An electrical characteristic parameter of each of the pixels in the selected state for compensating for variations in electrical characteristics of the light-emitting drive circuit, and an emission characteristic parameter for compensating for variations in characteristics of the light-emitting element. The characteristic parameter acquisition circuit applies a detection voltage to each of the data lines connected to the pixel, and applies a drive exceeding the drive control element between the control terminal of the drive control element and one end of the current path of each pixel. The voltage 値 voltage of the voltage limit 取得 obtains the detection voltage of each data line after at least one mitigation time, and then obtains the electrical characteristic parameter according to the voltage 该 of the detection voltage, and according to the illuminating of the illuminating element of each pixel The luminance 値 obtains the luminescence characteristic parameter ′, and the illuminating element of each pixel performs a illuminating operation based on the luminance measurement video material corrected based on the electrical characteristic parameter. A driving control method for a light-emitting device of the present invention for obtaining the advantage, wherein the light-emitting device has a light-emitting panel, and the light-emitting panel has a plurality of 201113851 data lines and a plurality of pixels connected to the data lines, the pixels having light emission And a light-emitting drive circuit is a drive control element having one end of the current path connected to the light-emitting element; the drive control method of the light-emitting device has a voltage application step of applying a detection voltage to each data line, and a control voltage of the drive control element of each pixel and one end of the current path is applied to a detection voltage exceeding a threshold voltage of the drive control element; and the voltage acquisition step applies the detection voltage and passes at least one mitigation time And obtaining the voltages of the data lines as a plurality of detection voltages; and the electrical characteristic parameter obtaining step is to obtain the electrical properties of the illumination driving circuit for compensating the pixels according to the obtained voltages of the plurality of detection voltages a characteristic characteristic parameter of the variation of the characteristic; the step of illuminating the operation is based on the electricity The characteristic parameter corrects the image data for brightness measurement, and the light-emitting element of each pixel is illuminated in response to the corrected image data for brightness measurement; and the light-emitting characteristic parameter obtaining step is to obtain the pixel for performing the light-emitting operation The measurement of the light-emitting luminance of the light-emitting element is performed, and based on the acquisition of the light-emitting luminance, an emission characteristic parameter for compensating for the characteristic variation of the light-emitting element is obtained. The advantages of the invention will be set forth in the description which follows. The advantages of the present invention can be realized and obtained by the means and combinations particularly pointed out below. The drawings, which are incorporated in and constitute a part of the specification, are intended to illustrate the embodiments of the invention 201113851 Hereinafter, the driving device of the moving device, the light-emitting device, and the light-emitting device of the present invention will be described in detail with reference to the drawings. Further, in the present embodiment, the description is made for use as a display device. <First Embodiment> First, a schematic configuration of a light-emitting device according to a first embodiment of the present invention will be described. (Display device) Fig. 1 is a view showing a configuration of a display to which the present invention is applied. As shown in Fig. 1, the present embodiment substantially includes a display panel (light-emitting panel) 11A, a channel 120, a power source driver 130, and a data drive 150 (150a' 150b). Here, the selection driver 120, the power source drive 140, and the controller 150 correspond to the circuits in the present invention. As shown in FIG. 1, the display panel 110 has a column direction (left and right in the drawing direction) and a row direction (the _ dimensional arrangement (for example, p column xq rows, p, q is a positive tracing line) Ls and a plurality of power supply lines La The pixel PIX connection is arranged; the common electrode Ec, PI X; and the plurality of data lines Ld are provided with the pixel drive control method of the embodiment and the electronic light-emitting device, and the light-emitting state is provided with the pixel drive A schematic display device (the illuminating device ( 睪 drive (scanning drive motor 140 and controller 138, data driver pixel drive device or drive I plural pixels PIX, system 3 face down direction) performs two Z); a plurality of selection lines (swept and each of the columns arranged in the column direction are connected to the full pixel and the 201113851 pixel ριχ arranged in the row direction. Here, each pixel ριχ has a light-emitting drive circuit and as described later. The selection driver 120 is connected to each of the selection lines Ls disposed on the display panel 110. The selection driver 120 is selected according to a selection control signal supplied from a controller 150 to be described later. For example, the scan clock signal and the scan start signal) sequentially apply a selection signal Ssel of a predetermined voltage level (select level: Vgh or non-selection level: Vgl) to the selection line Ls of each column at a predetermined timing. For example, the configuration 120 includes a shift register, and sequentially outputs a shift signal corresponding to the select line Ls of each column based on the selection control signal supplied from the controller 150; and an output buffer. The bit signal is converted into a predetermined signal level (selection level, for example, a high level), and sequentially output to the selection line Ls of each column as the selection signal Ssel. The power driver 130 is connected to each power line La disposed on the display panel 110. The power source driver 130 applies a predetermined voltage level to the power line La of each column at a predetermined timing based on a power source control signal (for example, an output control signal) supplied from a controller 150 to be described later (light-emitting level: ELVDD or non-light-emitting level: DVSS) power supply voltage Vsa. The data driver 140 is connected to each data line Ld of the display panel 110, and is based on a data control signal supplied from a controller 105, which will be described later, at least When the display operation (light-emitting operation) is performed, a gray scale signal (gray scale voltage Vdata) corresponding to the image data is generated, and is supplied to the pixel PIX via each data line Ld. Further, when the data driver 140 performs the characteristic parameter acquisition operation described later, The data line Ld applies a detection voltage (first voltage) vdac of a specific voltage 像素 to the pixel -10- 201113851 PIX which is the target of the characteristic parameter acquisition operation, and takes the voltage Vd of each data line Ld after the predetermined natural mitigation time t. The input voltage detection circuit Vmeas(t)' is converted into the detection data nineas(t) and output. Here, the 'data driver 1 40 has both a data driving function and a voltage detecting function' and is configured to switch these functions in accordance with a data control signal supplied from a controller 150 to be described later. The data driving function performs an operation of converting image data composed of digital data supplied via the controller 150 into an analog signal voltage, and outputting it to each data line Ld as a gray scale signal (gray scale voltage vdata). The voltage detecting function performs the analog signal voltage Vd taken in each data line Ld as the data line detecting voltage Vmeas(t), and converts it into digital data, and outputs it to the controller 150 as the detecting data n^as(t). Fig. 2 is a schematic block diagram showing a configuration example of a data drive applied to the display device of the embodiment. Fig. 3 is a schematic circuit configuration diagram showing an example of a configuration of a main part of the data driver shown in Fig. 2. Here, only a part of the number of rows (q) of the pixels PIX arranged on the display panel 110 is shown to simplify the illustration. In the following description, the configuration of the inside of the data driver 140 provided in the data line Ld of the jth line (j is a positive integer of 1 S j S q ) will be described in detail. Further, in Fig. 3, the shift register circuit and the data register circuit are simplified. -11-201113851 As shown in Fig. 2, the data driver 140 basically includes a shift register circuit 141, a data register circuit 142, a data latch circuit 143, a DAC/ADC circuit 144, and an output circuit 145. The data driver 140 is divided into an internal circuit 140A and an internal circuit 140B. The internal circuit 140A includes a shift register circuit 141, a data register circuit 142, and a data latch circuit 143, and performs image pickup operation of the image data described later based on the power supply voltages LVSS and LVDD supplied from the logic power supply 146. The sending action of the test data. The internal circuit 140B includes a DAC/ADC circuit 144 and an output circuit 145, and performs a grayscale signal generation output operation and a data line voltage detection operation, which will be described later, based on the power supply voltages DVSS and VEE supplied from the analog power supply 147. The shift register circuit 141 generates a shift signal based on the data control signal (clock signal CLK and the arterial wave signal SP) supplied from the controller 150, and sequentially outputs the shift signal to the data register circuit 142. The data register circuit 142 includes a register arranged in the number of rows (q) of the pixels PIX of the display panel 110 described above. The data register circuit 142 sequentially takes in one line of image data Din(1) to Din(q) based on the input timing of the shift signal supplied from the shift register circuit 114. Here, the image data Din(l) to Din(q) are serial data composed of digital signals. The data latch circuit 1 43 is taken into the data register circuit according to the data control signal (data latch pulse signal LP) during the display operation (the capture operation of the image data and the output operation of the gray scale signal). -12-201113851 of 142 of 1 column • Image data D i η (1) to D i η (q) are transmitted corresponding to each line, and the image data Din(l)~Din(q) is transmitted at a predetermined timing. To the DAC/ADC circuit 1 4 4 described later. Further, the data latch circuit 143 maintains the data line voltage Vmeas taken in via the DAC/ADC circuit 144, which will be described later, during the characteristic parameter acquisition operation (detection data transmission operation and data line voltage detection operation). t) Corresponding detection data nm...(1) and then 'output the detection data nm〃s at a predetermined timing (t as serial data. Specifically, the data latch circuit 143 is as shown in Fig. 3, and has: corresponding to each row The data latch 4 1 (j), the switch SW4 (") for connection switching, the switch SW3 for data output, and the switch SW3 for data output are provided. The data latch 41 (J) is attached to the data latch pulse signal LP. For example, the rising timing holds (question lock) the digital data supplied via the switch SW5(j). The switch SW5(j) performs switching control according to the data control signal (switching control signal S5) supplied from the controller 150 to be connected. The data latch circuit 142 of the point Na side, or the ADC 43(j) of the DAC/ADC circuit 144 of the contact Nb side, or the data latch 41 of the adjacent row (j+1) of the contact Nc side (j) Any one of +1) is selectively connected to the data latch 4 1 (j). Thus 'the switch SW5(j) is set to When the contact Na side is connected, the image data Din(j) supplied from the material latch circuit 143 is held by the data lock 41(j). Further, the switch SW5(j) is set to be connected to the contact Nb side. In the case, the data line Ld is taken into the ADC 43(j) of the DAC/ADC circuit 144. The detection data η...s(t) of the data lock voltage Vd (the data line detection voltage vmeas(t)) is The data latch 41 (j) is held. Further, in the case where the switch SW5 (j) is set to be connected to the contact Nc side, the data is latched via the switch SW4 (j+1) of the adjacent row (j + Ι) The detected data nmtas(t) held by the lock 4Uj+1) is held by the data latch 41(j). Further, the switch SW5(q) provided in the last row (q) connects the power supply voltage LVSS of the logic power supply 146 and the contact Nc. The switch SW 4 (j) performs switching control based on the data control signal (switching control signal S4) supplied from the controller 150 to connect the DAC 42(j) of the DAC/ADC circuit 144 on the contact Na side. Any one of the switch SW3 on the Nb side, or the switch SW5 (j-1) in the adjacent row (j-1) is selectively connected to the data latch 41 (j). Therefore, when the switch SW4(j) is set to be connected to the contact Na side, the image data Din(j) held by the data latch 41(j) is supplied to the DAC 42(j) of the DAC/ADC circuit 144. Further, when the switch SW4(j) is connected to the contact Nb side, the detection data of the data line detection voltage Vmeas(t) held by the data latch 41 (j+1) is externally output via the switch SW3.

Ilmcas(t) 0 performs switching control of the switches SW4(j), SW5(j) of the data lock circuit 143 based on the data control signals (switching control signals S4, S5) supplied from the controller 150. When the data latches 41(1) to 41(q) of the adjacent row are connected in series, the switch SW3 is controlled to be in an on state based on the data control signal (switching control signal S3, data latch pulse signal LP). Therefore, the detection data nm〃s(t) of the data line detection voltage Vmeas(t) of the data latches 41(1) to 41(q) of each row is controlled by -14-201113851. The sequence is taken out as serial data 'and output to the outside. Figs. 4A and 4B are diagrams showing output and output characteristics of a digital-analog conversion circuit (DAC) and an analog-to-digital conversion circuit (ADC) applied to the data drive of the embodiment. Fig. 4A is a diagram showing an output input characteristic diagram of a DAC applied to the present embodiment. Fig. 4B is a diagram showing an output input characteristic of an ADC applied to the present embodiment. Here, the output input characteristic diagram of the digital-to-analog conversion circuit and the analog-to-digital conversion circuit when the number of output input bits of the digital signal is set to 10 bits is shown. As shown in FIG. 3, the DAC/ADC circuit 144 includes a linear voltage digital-analog conversion circuit (DAC: voltage application circuit) 42(j) and an analog-digital conversion circuit (ADC: detection data acquisition circuit) corresponding to each row. ) 43(j). The DAC 42(j) converts the image data Din(j) composed of the digital data held by the data latch circuit 143 into the analog signal voltage Vpix(j), and outputs it to the output circuit 145. Here, the DAC 42(j) provided in each row has a linearity in the conversion characteristic (output input characteristic) of the analog signal voltage outputted from the input digital data as shown in Fig. 4A. That is, for example, the DAC 42(j) converts the 10-bit (ie, 1024 gray scale) digital data (〇, 1 ..... 1 023) into a linearly set analog signal voltage as shown in FIG. 4A. (V., V, .....V1()23). -15-201113851 The specific signal voltage (V〇~V1C) 23) is set within a range from the power supply voltages DVSS to VEE supplied from the analog power supply 147, which will be described later, and is set, for example, to the digital data input. The analog signal voltage V〇 converted when " “" (〇 gray scale) becomes the power supply voltage DVSS on the high potential side. Moreover, it is set to the analog signal voltage V which is converted when the digital data is "1 023" (1 02 3 gray scale: maximum gray scale). 23 becomes higher than the power supply voltage VEE on the low potential side and becomes a voltage 附近 near the power supply voltage VEE. 'ADC43(j) converts the data line voltage Vmeas(t) composed of the analog signal voltage taken from the data line Ld(j) into the detection data nm〃s(t) composed of digital data, and The data latch 41(j) is sent out. Here, the ADC 43(j) provided in each row has a linearity of the conversion characteristic (output input characteristic) of the digital data of the output of the conversion characteristic of the input analog signal as shown in Fig. 4B. Further, the bit width of the digital data at the time of voltage conversion of the ADC 43 (j) is set to be the same as that of the DAC 42 (j) described above. That is, the voltage 对应 of the ADC 43(j) corresponding to the minimum unit bit (1LSB: analog resolution) is set to be the same as that of the DAC 42(j). For example, as shown in FIG. 4B, the ADC 43(j) converts the analog signal voltage (VrVi.....Vl()23) set in the range of the power supply voltages DVSS to VEE into a linear one and one bit. Digital data of (1024 gray scale) (0, 1 ..... 1 023 ). The ADC4 3Q) is, for example, a voltage 値 of V when the analog signal voltage is input. The way in which the digits of the digital data are converted into "〇" (〇 gray scale) is set to -16- 201113851. The ADC 43(j) is converted into a digital signal 1 "1 023 " when the voltage 値 of the analog signal voltage is higher than the power supply voltage VEE and the analog signal voltage V1 <) 23 of the voltage 附近 near the power supply voltage VEE ( 1 023 gray scale: maximum gray scale) mode setting. In the present embodiment, the internal circuit 140A including the shift register circuit 141, the data register circuit 142, and the data latch circuit 143 is configured as a low withstand voltage circuit, and will include a DAC/ADC circuit 144 and an output circuit 145. The internal circuit 140B is configured as a high withstand voltage circuit. Therefore, the level shifter LSI (j) is disposed between the material latch circuit 143 (the switch SW4(j)) and the DAC 42(j) of the DAC/ADC circuit 144 as the internal circuit 140A from the low withstand voltage A voltage regulating circuit of the high withstand voltage internal circuit 140B. Further, the level shifter LS2(j) is provided between the ADC 43(j) of the DAC/ADC circuit 144 and the data latch circuit 143 (switch SW5(j)) as the internal circuit 140B from the high withstand voltage. A voltage regulating circuit of the low withstand internal circuit 140A. As shown in FIG. 3, the output circuit 145 includes a buffer 44(j) and a switch SW1(j) (connection switching circuit) for outputting gray scale signals to the data lines Ld(j) corresponding to the respective rows, and The switch SW2(j) and the buffer 45(j)e buffer 44(j) that take in the data line voltage vd (the data line detection voltage Vmeas(t)) are used to be used by the DAC 42(j) for the image data Din ( j) The analog signal voltage Vpix(j) generated by the analog conversion is applied as a gray scale voltage Vdau(j) to the buffer circuit of the data line Ld(j) via the switch SW1(j). -17- 201113851 The switch SW1(j) controls the application of the gray scale voltage Vdata(j) to the data line LdU based on the data control signal (switching control signal S1) supplied from the controller 150. Further, the switch SW2(j) controls the taking in of the data line voltage Vd (the data line detecting voltage Vmeas(t)) based on the data control signal (switching control signal S2) supplied from the controller 150. The buffer 45(j) is a buffer circuit for applying the data line voltage Vmeas(t) taken in via the switch SW2(j) to the ADC 43(j). The logic power supply 146 supplies a power supply voltage LVSS on the low potential side and a power supply voltage LVDD on the high potential side, which are used to drive the shift register circuit 141 including the data driver 140 and the data register. The circuit 142 and the internal circuit 140A of the data latch circuit 143. The analog power supply 1 47 supplies a high-potential side power supply voltage DVSS composed of an analog voltage and a low-potential side power supply voltage VEE for driving the DAC 42 (1) and the ADC 43 (j) including the DAC/ADC circuit 144, and the output circuit 145. The internal circuit U0B of the buffers 44(j), 45(j). Further, in the data driver 140 shown in FIGS. 2 and 3, for convenience of illustration, a control signal for controlling the operation of each unit is input to the jth line (corresponding to the first line in the figure). The data latch L41 and the switches SW1 to SW5 are provided corresponding to the data line Ld(j). In the present embodiment, of course, these control signals are commonly input to the configuration corresponding to each row. Fig. 5 is a functional block diagram showing the function of a controller applied to the display device of the embodiment. -18 - 201113851 * In addition, in Figure 5, for the sake of illustration, the arrows of the solid lines all indicate the flow of data between the functional blocks. In fact, as will be described later, the flow of any of these materials becomes effective in response to the operating state of the controller. The controller 150a of the present embodiment controls at least the operation states of the selection driver 120, the power source driver 130, and the data driver 140, and generates a selection control signal, a power control signal, and a data for performing a predetermined drive control operation of the display panel 1 1 . Control signals and output. The controller 1 50a operates the selection driver 120, the power driver 130, and the data driver 140 at predetermined timings by the supply selection control signal, the power control signal, and the data control signal to control the acquisition of each of the display panels 110. The operation of the characteristic parameter of the pixel PIX (the characteristic parameter obtaining operation) and the image information of the image data corrected based on the characteristic parameter of each pixel PIX are displayed on the display panel 110 (display operation). Further, in the characteristic parameter obtaining operation, the controller 150a detects the detected data relating to the characteristic change of each pixel PIX detected by the data driver 140 and the luminance data detected for each pixel PIX (details will be As described later, various corrections are obtained. Further, during the display operation, the controller 150a corrects the image data supplied from the outside based on the correction data acquired in the characteristic parameter acquisition operation, and supplies it to the data driver 140 as the corrected image data. Specifically, the controller (image data correction circuit) 150a has, for example, a voltage amplitude setting function circuit 152a including a reference table (LUT) 151, a multiplication function circuit (video data correction circuit) 153a, and the like. -19- 201113851 Addition function circuit (image data correction circuit) 丨5 4 a, memory (memory circuit Η 55 and correction data acquisition function circuit (characteristic parameter acquisition circuit) 156. Voltage amplitude setting function circuit 丨52a for external supply The image data composed of the digital data is converted into voltage amplitudes corresponding to the respective colors of red (R), green (G), and blue (B) by referring to the reference table 丨5 1. Here, the converted image is converted. The maximum amplitude of the voltage amplitude of the image data is set to be less than 修正 below the correction amount of the characteristic parameter of each pixel from the maximum 値 of the input of the DAC 42. The multiplication function circuit 1 5 3 a will be based on each pixel The correction data of the current amplification factor obtained by the detection data related to the change in the characteristics of PI X or the luminance data (light emission current efficiency 々) detected by each pixel PIX The correction data of the current amplification factor of 0 is multiplied by the image data. The addition function circuit 1 5 4 a correction data and image of the threshold voltage Vth of the driving transistor obtained based on the detection data related to the characteristic change of each pixel ΡIX The data is added and supplied as correction image data to the data driver 140. The correction data acquisition function circuit 156 obtains the current amplification rate based on the detection data associated with the characteristic change of each pixel and the luminance data detected for each pixel ' Correction data of β, luminous current efficiency W, and threshold voltage Vth. Here, for the luminance data of each pixel PIX, for example, each pixel PIX when the display panel 110 performs illumination operation according to the image data of the predetermined luminance gray scale The brightness of the light is measured using a luminance meter or a CCD camera (brightness measuring circuit) 1 60. In addition, the specific measurement method of the brightness data will be described later. -20- 201113851 曰己亿体155 will be from the above data driver i4〇 The detected data of each pixel PIX sent is recorded corresponding to each pixel 。 χ 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The correction data obtained by the function circuit 156 is stored in correspondence with each pixel PIX. When the addition processing of the addition function circuit 154a is performed and the correction data acquisition processing of the correction data acquisition function circuit 156 is performed, the addition function circuit 15 4 a and the correction data acquisition function circuit 1 5 6 reads the detection data from the memory 1 5 5 . Further, in the controller 1 5 0 a shown in FIG. 5 , the correction data acquisition function circuit 156 may be provided in the Further, in the controller 150a shown in Fig. 5, the memory 155 may be an individual memory as long as it is associated with each pixel PIX and memorizes the detected data and the corrected data. Further, these memories 155 may be memories provided outside the controller 150a. Moreover, the image data supplied to the controller 150a extracts, for example, a luminance grayscale signal component from the image signal, and forms the luminance grayscale signal component as a serial data composed of digital signals according to each column of the display panel 110. . (Pixel) Next, the configuration of the pixels arranged in the display panel of the present embodiment will be specifically described. Fig. 6 is a circuit configuration diagram showing an embodiment of a pixel applied to the display panel of the embodiment. -21 - 201113851 Each of the pixels PIX applied to the display panel of the present embodiment is disposed on the selection line Ls connected to the selection driver 120 and the data line Ld connected to the data driver 134 as shown in Fig. 6 Near the intersection. Each of the pixels PIX includes an organic electroluminescence element OEL that is a current-driven light-emitting element, and a light-emitting drive circuit that generates a current for driving the organic electroluminescence element OEL to emit light, and the light-emitting drive circuit shown in FIG. The DC has a circuit configuration including substantially a transistor Tr11 to Tr13 and a capacitor (storage capacitor) Cs. The gate terminal of the transistor (second transistor) Tr1 is connected to the selection line Ls, and the 汲 terminal is connected to the power supply line La. Further, the source terminal is connected to the connection point N 1 1 . The gate terminal of the transistor (third transistor) Tr1 is connected to the selection line Ls, and the source terminal is connected to the data line Ld, and the gate terminal is connected to the connection point N 1 2 . The gate terminal of the transistor (drive control element, first transistor) Tr 1 3 is connected to the connection point Nil, the 汲 terminal is connected to the power supply line La, and the source terminal is connected to the connection point N12. Further, a capacitor (capacitance element) Cs is connected between the gate terminal (connection point Nil) of the transistor Tr 13 and the source terminal (connection point N12). The capacitor Cs may be a parasitic capacitance formed between the gate and the source terminal of the transistor Tr 13 or may be connected in parallel with the connection point N 1 2 and the connection point N 1 2 in addition to the parasitic capacitance. Capacitor component. -22- 201113851 Further, the anode (anode electrode) of the organic electroluminescent element OEL is connected to the connection point N12 of the light-emitting drive circuit DC, and the cathode (cathode electrode) is connected to the common electrode Ec. The common electrode Ec is connected to an external constant voltage source to apply a predetermined voltage ELVSS (for example, a ground potential GND). Further, in the pixel ρι shown in Fig. 6, in addition to the capacitor Cs, the pixel capacitance Cel is present in the organic electroluminescent element OLED. Further, the wiring parasitic capacitance Cp is present in the data line Ld. Here, in the pixel PIX of the present embodiment, the power source voltage Vsa (ELVDD, DVSS) applied to the power source line La from the power source driver 130, the voltage ELVSS applied to the common electrode Ec, and the analog power source 147 are supplied to the data driver 1 40. The relationship of the supplied power source voltage VEE is set to, for example, the following conditions.

DVSS<ELDD DVSS = ELVSS( = GND) ...(1)

VEE < ELVSS Further, in the pixel PIX shown in Fig. 6, for example, a thin film transistor (TFT) having the same channel type can be applied to the transistors Tr11 to Tr13. The transistors Tr11 to Tr13 may also be amorphous bismuth thin film transistors or polycrystalline germanium film transistors. In particular, as shown in FIG. 6, in the case where an n-channel type thin film transistor is used as the transistors Tr 1 1 to Tr 1 3, and an amorphous germanium thin film transistor is used as the transistors Tr 1 1 to Tr 1 3, the application is applied. The established amorphous crucible manufacturing technology enables a uniform and stable transistor with stable operating characteristics (electron mobility, etc.) in a simple process compared to a polycrystalline or single crystal germanium thin film transistor. -23-201113851 Further, in the above-described pixel PIX, a circuit configuration in which three transistors Tr 11 to Tr 13 are provided as the light-emitting drive circuit DC and the organic electroluminescence element OEL is used as the light-emitting element is shown. The present invention is not limited to the embodiment, and may have another circuit configuration including three or more transistors. Further, the light-emitting element that is driven by the light-emitting drive circuit DC may be a current-driven light-emitting element, and may be another light-emitting element such as a light-emitting diode. (Drive Control Method of Display Device) Next, the drive control method of the display device of the present embodiment will be described. The drive control operation of the display device 1 of the present embodiment is basically constituted by a characteristic parameter acquisition operation and a display operation. In the characteristic parameter obtaining operation, parameters for compensating for variations in the light-emitting characteristics of the pixels PIX arranged on the display panel 110 are obtained. More specifically, the characteristic parameter obtaining operation performs a parameter for correcting the variation of the threshold voltage vth of the transistor (driving transistor) Tr13 provided in the light-emitting drive circuit DC of each pixel PIX, for correcting each pixel PIX. The parameter of the current amplification factor A with respect to the deviation of the setting 、 and the parameter for correcting the variation of the luminous current efficiency ▽ of the organic electroluminescent element 〇EL in each pixel PIX with respect to the setting 値. In the display operation, the corrected image data obtained by correcting the image data composed of the digital data is generated according to the correction parameter obtained by each pixel using the characteristic parameter obtaining operation described above, and the gray scale voltage corresponding to the corrected image data is generated. Vdata is written to each pixel ρίχ. Therefore, each image -24-201113851 PIX (organic electroluminescent element OEL) has been compensated for the electrical characteristics of each pixel ριχ (the threshold voltage V th of the transistor T r 1 3, the current amplification ratio /3) The fluctuation or variation of the luminescence property (the luminescence current efficiency β of the organic electroluminescence device 0EL) is caused by the original luminance gradation of the image data. Hereinafter, each operation will be specifically described. (Characteristic Parameter Acquisition Operation) Here, a technique specific to the characteristic parameter acquisition operation of the present embodiment will be described first. Next, an operation for compensating the characteristic parameters of the threshold voltage Vth and the current amplification factor /3 at each pixel will be described using this method. Next, an operation for obtaining a characteristic parameter for compensating for the luminous current efficiency will be described. First, an explanation will be given of the light-emitting drive circuit DC when the pixel PIX having the light-emitting drive circuit DC shown in FIG. 6 is written from the data driver 140 via the data line Ld (the gray-scale voltage Vdata corresponding to the image data is applied). Voltage-current (V-I) characteristics. Fig. 7 is a view showing an operation state when a pixel of the light-emitting drive circuit of the embodiment is applied to write image data. Fig. 8 is a view showing a voltage-current characteristic when a pixel of the light-emitting drive circuit of the embodiment is applied in a write operation. In the writing operation of the image data of the pixel PIX in the present embodiment, as shown in FIG. 7, the selection signal Ssel of the selection level (high level: Vgh) is applied from the selection driver 120 via the selection line Ls. The pixel PIX is set to the selected state. -25-201113851 At this time, the transistors Tr11 and Tr15 of the light-emitting drive circuit DC are turned on, and the gate and the gate terminal of the transistor Tr 13 are short-circuited, and the diode is connected. Further, in this selected state, the power source voltage Vsa (= DVSS) of the light emission level is applied from the power source driver 130 through the power source line La. Then, the data driver L 40 applies a gray scale voltage Vdata corresponding to the voltage 影像 of the image data to the data line Ld. Here, the gray scale voltage Vdata is set to be lower than the power supply voltage DVSS applied from the power source driver 130. Therefore, when the power supply voltage DVSS is set to 〇V (ground potential GND), the gray scale voltage Vdata is set to a negative voltage 値. Therefore, as shown in Fig. 7, the gate current I d corresponding to the gray scale voltage Vdata is passed from the power source driver 1 3 0 via the power source line La, and the pixel PIX (light-emitting drive circuit DC) of the transistor Tr13' Trl2. The data line flows in the direction of Ld. Here, the voltage ELVSS applied to the cathode (cathode electrode) of the organic electroluminescent element OEL and the power supply voltage DVSS are set to the same voltage as shown in the condition of the above formula (1), because both are Since it is set to 0 V (ground potential GND), a reverse bias is applied to the organic electroluminescent element 〇EL, and the light-emitting operation is not performed. The circuit characteristics of the light-emitting drive circuit DC for this case are verified. In the light-emitting drive circuit DC, the threshold voltage Vth of the transistor Tr1 of the drive transistor is not changed, and the current amplification factor 发光 of the light-emitting drive circuit DC is not deviated from the initial state of the set ,, and the power is turned on. The threshold voltage of the crystal Tr3 is set to Vth. When the current amplification factor is set to /3, the current 汲 of the drain current Id shown in Fig. -26-201113851 * 7 can be expressed by the following equation (2).

Id=/S (V〇—Vdata — V th 〇) 2 (2) Here, the design of the light-emitting drive circuit DC or the standard current of the standard / (3) and the start of the transistor Tr 1 3 The voltage limit Vth is limited. 'All constants. Also, V. The power supply voltage of the non-light-emitting level applied from the power source driver 130 is ¥5 & (= 0¥33), and the voltages (¥«) - 乂3 & 13) are equivalent to being applied to the driving transistors Tr 1 3 and Tr 1 2 The potential difference formed by the circuit in series with the current path. At this time, the relationship between the voltage (V.-Vdata) applied to the light-emitting drive circuit DC and the current 値 of the drain current Id flowing to the light-emitting drive circuit DC (V - I characteristic) is characterized by a characteristic line in FIG. SP1 said. Then, the threshold voltage after the variation of the element characteristics of the transistor Tr 13 (the threshold voltage shift; the variation amount is ΔVth) is set as Vth (= Vth〇+ Z). When Vth), the circuit characteristics of the light-emitting drive circuit DC are changed as shown in the following formula (3). Here, Vth is a constant. The voltage-current (V-I) characteristic of the light-emitting drive circuit DC at this time is shown as a characteristic line SP2 in Fig. 8. \ά= β (V〇— Vdata — Vth) 2 (3) In the initial state shown in the equation (2), the current amplification factor is set when the current amplification factor is different from the setting 値. When it is /3 ', the circuit characteristics of the light-emitting drive circuit DC can be expressed by the following formula (4).

Id = /5 1 (V 〇 - Vdata - Vth 〇) 2 (4) Here, 'θ' is a constant. The circuit characteristics of the light-emitting drive circuit DC at this time are indicated by the characteristic line SP3 in Fig. 8. Further, the characteristic line SP 3 of -27 to 201113851 shown in Fig. 8 indicates that the current amplification ratio in the equation (4) is not smaller than the current amplification ratio shown in the equation (2). The voltage-current (V - I) characteristic of the drive circuit DC. In the equations (2) and (4), when the current amplification factor of the design 値 or the standard 设为 (Typical) is set to the point typ, the parameter for correcting the current amplification rate to the 値 is corrected. (correction data) is set to △々. At this time, the correction data Δ /3 is supplied to each of the light-emitting drive circuits DC so that the product of the current amplification rate cold 'and the correction data Δ/? becomes the current amplification factor Atyp of the design ( (that is, becomes /3' xZXyS - calling typ ). Then, in the present embodiment, based on the voltage-current characteristic (the equations (2) to (4) and 8) of the above-described light-emitting drive circuit DC, the correction method is used in the following manner. The characteristic parameter of the threshold voltage Vth and the current amplification factor β ' of the crystal Tr3. In addition, in this patent specification, the tactics shown below are referred to as "automatic zeroing method". The method (automatic zeroing method) applied to the characteristic parameter obtaining operation of the present embodiment uses the data of the above-described data driver 14 in the selected state in the pixel 具有ίχ having the light-emitting drive circuit DC shown in Fig. 6. The driver function 'applies a predetermined detection voltage Vdac to the data line Ld. Then, the data line Ld is set to a high impedance (HZ) state, and the potential of the data line Ld is naturally moderated. Then, the voltage detection function of the data driver 14 is used to take in the voltage Vd (data line detection voltage Vmeas(t)) of the data line Ld after the natural time 1 is tempered for a fixed time (duration time t). -28- 201113851 * Then, the acquired data line detection voltage Vmeas(t) is converted into detection data n_as(t) composed of digital data. Here, in the present embodiment, the relaxation time t is set to a plurality of different times (timing: t.'t, 13, 13), and the multiplication of the data line detection voltage Vmeas(t) is performed. And become the conversion of the test data nmess(t). Fig. 9 is a graph showing the change of the data line voltage (transition curve) of the technique (automatic zeroing method) applied to the characteristic parameter obtaining operation of the present embodiment. Specifically, by using the characteristic parameter obtaining operation of the auto-zero method, first, the detection voltage Vdac is applied from the data driver 140 to the data line Ld in a state where the pixel PIX is set to the selected state, so as to be electrically connected to the light-emitting driving circuit DC. A voltage exceeding the threshold voltage of the transistor Tr13 is applied between the gate and the 汲 terminal of the crystal Tr 13 (between the junctions Nil and N1 2 ). At this time, in the write operation to the pixel PIX, since the power supply voltage DVSS (= Vc: ground potential GND) of the non-light-emitting level is applied from the power source driver 130 to the power source line La, the potential difference (V.-V dac) is applied. Between the gate and source terminals of the transistor T r 1 3 . Therefore, the planting voltage Vdac is set to a voltage satisfying the condition V 〇 - V d a c > V t h . Further, the detection voltage vdac is a voltage 更低 lower than the power supply voltage DVSS, and is set to have a negative electrode with respect to the power supply voltage ELVSS (ground potential GND) applied to the common electrode Ec connected to the cathode of the organic electroluminescent element OEL. Sexual voltage 値. Therefore, the drain current Id in response to the detection voltage Vdac flows from the power source driver 130 through the power source line La, the transistors Tr 1 3, and Tr 1 2 in the direction of the data line Ld. At this time, the capacitor Cs connected between the gate and the source of the transistor Tr 13 (between the contacts N 1 1 and N 1 2) is charged with a voltage -29-201113851 corresponding to the detection voltage Vdac. Next, the data input side of the data line Ld is set to a high impedance (HZ) state. Here, shortly after the data line Ld is set to the high impedance state, the voltage charged to the capacitor Cs is maintained at the voltage corresponding to the detection voltage Vdac. Therefore, the gate and source-to-source voltage Vgs of the transistor Tr 13 is maintained at the voltage charged to the capacitor Cs. Therefore, after the data line Ld is set to the high impedance state, the electric crystal Tr13 is kept in the on state, and the drain current Id flows between the drain and the source of the transistor Tr13. Here, the potential of the source terminal (connection point N 1 2 ) of the transistor Tr13 gradually rises to a potential close to the 汲 terminal side as time passes, and flows between the drain and the source of the transistor Tr 1 3 . The current 値 of the drain current Id is gradually reduced. Along with this, a part of the electric charge stored in the capacitor Cs is gradually discharged, so that the voltage between the both ends of the capacitor Cs (the gate of the transistor Tr13 and the voltage Vgs between the sources) gradually decrease. Therefore, as shown in FIG. 9, the voltage Vd of the data line Ld gradually rises from the detection voltage Vdac as time passes, and gradually rises to a voltage which converges to the 汲 terminal of the transistor Tr1 (the power source of the power line La) The voltage DVSS (= V〇) is subtracted from the voltage (V. - Vth) of the threshold voltage Vth of the transistor Tr13. Then, in this natural relaxation, finally, when the drain current Id does not flow between the drain and the source of the transistor Tr13, the discharge of the charge stored in the capacitor Cs is stopped. At this time, the gate voltage (gate voltage and source voltage Vgs) of the transistor Tr 1 3 becomes the threshold voltage Vth of the transistor Tr1. -30- 201113851 Here, the state in which the drain current Id does not flow between the drain and the source of the transistor T r 1 3 of the light-emitting drive circuit DC, because of the drain and source between the transistors τ r 1 2 The voltage becomes almost 0 V', so at the end of the natural relaxation, the data line voltage Vd is almost equal to the threshold voltage Vth of the transistor Tr13. Further, in the transition curve shown in Fig. 9, the data line voltage vd gradually elapses to the threshold voltage Vth (= | V. - Vth 丨) of the transistor Tr13. However, although the data line voltage Vci infinitely approaches the threshold voltage Vth', theoretically, even if a sufficiently long relaxation time t is set, it is not completely equal to the threshold voltage Vth. This transition curve (the characteristic of the data line voltage Vd caused by natural relaxation) can be expressed by the following formula (1 1).

Vd = Vmeas(t) = V0-Vth- In the equation (11), "C" is the sum of the capacitance components added to the data line Ld in the circuit configuration of the pixel PIX shown in Fig. 6, to C = Cel + Cs + Cp (Cel: pixel capacitance, Cs: capacitor capacitance, Cp: wiring parasitic capacitance). Further, the detection voltage Vdac is defined as a voltage 满足 which satisfies the condition of the following formula (12). -31 - 201113851

Vdac : = VI - AV x (nd -1) ► V〇- Vdac - Vth _ max > 0 '..(12) In the formula (12), Vth_max represents the threshold voltage Vth of the transistor Tr13 Compensation limit 値. Here, nd is defined as the digital data (the digital data for specifying the detection voltage Vdac) at the beginning of the input DAC 42 in the DAC/ADC circuit 144 of the data driver ι4〇, where the digital data is 10 bits. The case 'd' is any one of the choices 1 to 1023 that satisfy the condition of the above formula (12). Further, AV is defined as the bit width of the digital data (corresponding to the voltage width of 1 iiA )), and when the digital data n d is 1 〇 bit, it is expressed by the following formula (13).

Ay = Vl - Vl023 1022 -- (13) Then, in the equation (11), the data line voltage Vd (the data line detection voltage Vmeas(t), the data line voltage Vd converges 。V. - Vth, and The parameter 々/C composed of the sum of the current amplification factor and the capacitance component C is defined as the following equations (14) and (15). Here, the ADC 4 3 is relative to the data line voltage during the relaxation time t. The digital output (detection data) of vd (data line detection voltage Vmeas(t)) is defined as nmeas(t) ( 'and the digital data of the threshold voltage Vth is defined as n, h. -32- ' (14) 201113851

Vmeas : = VI — AV x (nmeas - 1)

Vo - Vth : = VI - AV x (nth -1) ^ ξ: = (β/〇·Δν -..(15) Then, according to the definition of the formula (14), the definition of '(15)' will The equation (11) is replaced with the actual digital data (image data) input to the DAC 42 of the DAC/ADC circuit 144 of the data driver 140 and the digital data (detection data) actually output after analog-digital conversion by the ADC 43. In the case of the relationship, it can be expressed by the following equation (16): nmeas(t) = nth + fly nd ~ nth • t *(nd -nth) + l (16) In the equation (15), (16) Equation, f is the analogy of the parameter θ/c in the analogy ' 'fxt is dimensionless. Here, the threshold of the beginning of the threshold voltage Vth of the transistor Tr3 is not changed (Vth shift) The voltage vth is set to about IV. At this time, in order to satisfy the condition of fxtx(nd_nih)>i, the two mitigation times t = tl, t2 are set, which is in response to the transistor Tr3 The compensation voltage component (bias voltage) v〇ffset(t0) that limits the voltage variation can be expressed by the following equation (17): -33- 201113851 ▽offset(t.)= >. . = Δν -( Π! -n2) 2 jtl .丄纟.t - ti t〇---(17) In the case where the equation (17) where m and n2 are set to ti and 12 in the equation (丨6), the digital data output from the ADC 43 ( Detecting data) nm...(t!)' nmeas(t2). Then, according to the equations (16) and (17), the digital data of the threshold voltage Vth of the transistor can be used for the relaxation time t = t. The digit data nineas(t()) output from the ADC 43 is expressed by the following equation (18). The digital data voffset of the 'bias voltage Voffset' can be expressed by the following equation (19). (18) Formula, Formula (19), <f> is the total pixel average f of the parameter cold C, where the number of digits 値 f. Here, <!:> does not consider 値 below the decimal point. Door meas(t〇) -

•t〇...(18) ...(19) < 〆.t〇= digital Voffset Therefore, according to the equation (18), the digital data of the full-pixel portion for correcting the threshold voltage vth can be obtained (corrected) Information) nih. -34- 201113851 In addition, the deviation of the current amplification factor is the transition curve shown in Fig. 9, and the digital data (detection data) nwas(t) output from the ADC 43 when the relaxation time t is set to t3, the solution to f The above formula (16) can be expressed by the following formula (20). Here, t3 is set to be much smaller than the time t t, t 1 , and t 2 used in the equations (17) and (18). •t3

_~ ^meas(^3)_ i^meas(^3 ) ~ ^th] "[^d—^thJ (20) In the formula (20), focusing on f, each data line Ld The panel C (light-emitting panel) is designed in such a manner that the sum C of the capacitance components becomes equal, and the bit width Λν of the digital data is determined in advance as shown in the above formula (13), thereby defining the formula (15) of f The AV and C become constant. Then, if the setting of € and stone is set to f typ and /5 typ 'if the square of the deviation is omitted, then the illumination driving circuit DC of each pixel in the display panel 1 1 修正 is corrected. The multiplication correction of the deviation 値 △ 芒, that is, the digital data (correction data) for correcting the deviation of the current amplification factor △ is not defined by the following formula (21). -35- 201113851 Δ^: =i_izityp 2ξ = ί_Ι^Ρ = Αβ (9) Therefore, the correction data n, h (the i-th characteristic parameter) for correcting the variation of the threshold voltage vih in the light-emitting drive circuit DC, and The correction data Δ for correcting the deviation of the current amplification factor /3 does not read the 2 characteristic parameter), and can be changed by the above-mentioned series (18) and (21). The time t ' is obtained by detecting the data line voltage vd (the data line detection voltage vmeas(t)) a plurality of times. Further, the acquisition processing of the correction data nh and ΔA as described above is executed by the correction data acquisition function circuit 156 of the controller 15A shown in Fig. 5. Then, in the controller 丨5 〇a shown in Fig. 5, the specific image data supplied from the outside (here, the expedient is referred to as "digital data for luminance measurement: first image data")~ According to the correction data calculated by the equations (18) and (21), Δ /3, a series of arithmetic processings shown below are applied to generate luminance measurement video data, and the data driver 140' is input to The display panel 110 (pixel PIX) is voltage-driven. Specifically, the method of generating the luminance measurement video data nd_bM is to perform current amplification on the digital data nd for luminance measurement, the variation correction of 5 (Δ / S multiplication correction), and the variation correction of the threshold voltage Vth (n). , h addition correction). -36 - 201113851 » ' First, in the multiplication function circuit 153a of the controller 150a, the digital data n« is multiplied by the correction data Δ /3 (ηιχΔ yS ) for correcting the deviation of the current amplification factor 0. Then, in the addition function circuit 154a, the digital data (iuxA /3) which has been multiplied is added with correction data nih ((nd X Δ /5 ) + nth) for correcting the variation of the threshold voltage vth. 'The digital data ((nd x Δ cold) + nlh) to which these correction processes have been applied is used as the brightness measurement image data nd_bM, and supplied to the data register circuit 142 of the data driver 140. The data driver 140 utilizes the DAC/ADC circuit. The DAC 42 of 144 is taken into the luminance measurement image data nch of the data register circuit 142 and converted into an analog signal voltage. Here, as shown in FIG. 4, since the output input characteristics (conversion characteristics) of the DAC 42 and the ADC 43 are set to be the same, the gray scale voltage (second voltage) Vh for luminance measurement generated by the DAC 42 is based on the first The definition "of the formula (14) is defined as the following equation (22). This gray scale voltage Vbr1 is supplied to the pixel PiX via the data line Ld.

Vbrl = Vl - ΔV(nbrt - 1) (22) In this way, 'a series of correction processing is performed on a specific image data' to generate a gray scale voltage VbM for luminance measurement, and written in the display panel 110 By this, the current 値 of the light-emission drive current Iem flowing from the light-emitting drive circuit DC of each pixel p X to the organic electroluminescent element OEL can be set to a constant value without being subjected to the current amplification ratio Θ relative to the setting 値The bias of -37-201113851 is the effect of the variation of the voltage or voltage Vth of the differential or driving transistor. Then, in this state, the display panel 11 〇 is caused to emit light, and the light emission luminance Lv (cd/m2) of each pixel PIX is measured. Here, the method of measuring the luminance of each pixel PIX can be applied, for example, as follows. In other words, in an example of the method of measuring the luminance of each pixel PIX, first, each pixel PIX arranged on the display panel 110 is simultaneously illuminated by a gray scale corresponding to the grayscale voltage Vbfl for luminance measurement. Next, as shown in FIG. 5, the display panel 11A is imaged by a luminance meter or a CCD camera 160 disposed on the emission surface side of the display panel 1 1 〇, wherein the emission surface side is the pixel PIX of the display panel 1 1 〇 The emitted light is emitted from the outside side. Here, the luminance meter or the CCD camera 160 uses a resolution higher than the size of each pixel PIX arranged on the display panel 110. Then, the area corresponding to each pixel PIX is associated with the luminance data output from the luminance meter or CCD camera 160 from the acquired video signal. Then, a predetermined number of luminance data is extracted from the high luminance side of the plurality of luminance data corresponding to the PIX region of each pixel, and the average luminance 値 is calculated, thereby determining the luminance (brightness 値) Lv of each pixel PIX. Here, when the luminous current efficiency of the organic electroluminescent element OEL is set to f = (brightness) / (current density), the current flowing through the light-emission drive current of each pixel PIX is When the threshold is set, the deviation of the light-emitting luminance in the display panel 110 from the set threshold can be regarded as the deviation of the luminous current efficiency 7?. -38- 201113851 Then, when the respective 値 of the illuminance Lv and the illuminating current efficiency 设为 are set to Lvtyp and 7? typ, if the square of the deviation is omitted, the illuminance Lv of each pixel PIX in the display panel 110 is corrected. The partial multiplication correction 値 Δ Lv, that is, the deviation bit data for correcting the luminous current efficiency 修正 (correction data: the third characteristic parameter) Δ ^ can be defined by the following formula. Set the number used for the difference (23) ALv :=1-

Lv - Lvtyp ~~2Lv~ _ ^Ttyp - 2η = Αη (23) Therefore, as described above, the correction data Δ; ? of the luminous current efficiency 7? can be obtained from the light emission Lv measured for each pixel ΡΙΧ. Here, the arithmetic processing for correcting the offset correction data Δ^ of the light-emission luminance Lv shown in the equation (23) is to use the correction data Δ which is corrected by the correction formula Δ according to the equation (21). The order of 0 is executed in the order of the operation. Then, the correction data obtained from the equations (21) and (23) are multiplied by Δ7?, whereby the current amplification factor 发光 and the illuminating current are defined as shown in the following equation (24). Correction of the deviation of the efficiency (fourth characteristic parameter) AiS». Α β ί =Δ η χΔ β (24) The difference between the luminance and the Δβ correction data-39- 201113851 The correction data calculated by the equations (18) and (24) and the eight cold In the display operation to be described later, the correction of the current amplification factor Θ (Δ /3 multiplication correction) and the threshold voltage vth are applied to the image data no input from the outside of the display device 1 of the present embodiment. The variation correction (nih addition correction) is used when generating the corrected image data nd_e^p. Therefore, since the gray scale voltage Vdata ' corresponding to the analog voltage 値 of the analog image data nd_u„p is supplied from the data driver 140 to the respective pixels PIX via the data line Ld, the organic electroluminescent element 〇EL of each pixel ρι can be obtained. The brightness gray scale performs the light-emitting operation without being affected by the current amplification rate cold or the variation of the luminous current efficiency 7? or the variation of the threshold voltage Vth of the driving transistor, so that a good and uniform light-emitting state can be achieved. The characteristic parameter obtaining operation using the above-described automatic zeroing method relating to the device configuration of the present embodiment will be described. In the following description, the description of the same operation as the above-described characteristic parameter obtaining operation will be simplified or omitted. The correction data nih for correcting the variation of the threshold voltage Vth of the driving transistor of each pixel PIX and the correction data for correcting the deviation of the current amplification ratio of each pixel PIX are shown. FIG. 10 is a view showing the present embodiment. A timing chart (one) of the characteristic parameter obtaining operation of the display device. Fig. 11 is a view showing the display device of the present embodiment. Fig. 1 is a schematic view showing the operation of the natural mitigation operation of the display device of the present embodiment. -40-201113851 Fig. 13 is a diagram showing the data line voltage detection of the display device of the present embodiment. Fig. 14 is a view showing the operation of the detection data sending operation of the display device of the embodiment. Fig. 15 is a functional block diagram showing the correction data calculation operation of the display device of the embodiment. This is a configuration of the data driver 14 in '11th to 14th, and the illustration of the shift register circuit 141 is omitted for convenience of illustration. The characteristic parameter (correction data n, in the present embodiment) In the acquisition operation, as shown in FIG. 10, each pixel PIX of each column is set to include the detection voltage application period T1 (n, the natural relaxation period Tm, in the predetermined characteristic parameter acquisition period Tcpr, The data line voltage detection period Tm and the detection data transmission period Τ1; Μ. Here, the natural relaxation period τη. 2 corresponds to the above-mentioned relaxation time t. In Fig. 10, Although the relaxation time t is set to one time for convenience of illustration, as described above, in the present embodiment, the relaxation time t is different, and the data line voltage Vd is detected (the data line detection voltage Vmeas(t). )). Therefore, in practice, the data line voltage detection operation (data line voltage detection period) is repeatedly performed during each of the different relaxation times t (= t., t, 12, 13) in the natural relaxation period Tm. TuO and detection data transmission operation (detection data transmission period Τ1 (μ). First, in the detection voltage application period T1 (n, as shown in Fig. 1 and Fig. 11, the pixel to be subjected to the characteristic parameter acquisition operation ΡΙΧ (Pixel PIX of the first column in Fig. 41-201113851) is set to the selected state. That is, 'the selection signal Ssel of the selected level (high level: Vgh) is applied from the selection driver 120 to the selection line Ls to which the pixel PIX is connected, while the low level is applied from the power source driver 130 to the power line La (non-light emission level: DVSS) = Ground potential GND) Supply voltage Vsa. Then, in the selected state, the switch SW1 provided in the output circuit 145 of the data driver 140 is turned on according to the switching control signal S1 supplied from the controller 150a, thereby connecting the data line Ld) and DAC42(j) for DAC/ADC144. Further, the switch SW2 provided in the output circuit 145 is turned off in accordance with the switching control signals S2 and S3 supplied from the controller 150a, and the switch SW3 connected to the contact Nb of the switch SW4 is turned off. Further, 'switch SW4 provided to the material latch circuit 143 is set to be connected to the contact Na according to the switching control signal S4 supplied from the controller 150a, and the switch SW5 is set to and the contact according to the switching control signal S5. Na is connected. Then, the digital data no of the detection voltage Vdac for generating the predetermined voltage 取 is sequentially taken from the data driver 丨4〇 into the data register circuit 142' and held in the data latch via the switch SW5 corresponding to each row. Lock 41 (j). Then, the digital data nd held by the 'data latch 4 1 (j) is input to the DAC 42(j) of the DAC/ADC circuit 144 via the switch SW4 for analog conversion, and is applied to the data line Ld(j) of each row as the detection voltage. Vdac. -42- 201113851 Here, the detection voltage Vdac is set to a voltage 满足 satisfying the condition of the above formula (1 2) as described above. In the present embodiment, since the power source voltage DVSS applied from the power source driver 130 is set to the ground potential GND, the detection voltage Vdac is set to a negative voltage 値. Further, the digital data nd for generating the detection voltage Vdac is previously stored in a memory provided, for example, in the controller 150a or the like. Therefore, the transistors Tr1 and Tr12 provided in the light-emitting drive circuit DC constituting the pixel PIX are turned on, and the low-level power supply voltage Vsa (= GND) is applied to the gate terminal of the transistor Tr13 via the transistor Tr11. One end side of the capacitor C s (connection point N 1 1). Further, the detection voltage Vdac applied to the data line Ld(j) is applied to the source terminal of the transistor Tr13 and the other end side (connection point N12) of the capacitor Cs via the transistor Tr12. In this manner, by applying a potential difference larger than the threshold voltage Vth of the transistor Tr13 to the gate and source terminals of the transistor Tr13 (i.e., both ends of the capacitor Cs), the transistor Tr13 is turned on. And the flow corresponds to the potential difference (gate, source-to-source voltage V gs ) of the drain current I d . At this time, since the potential of the source terminal of the transistor Tr 1 3 (detection voltage Vdac) is set lower than the potential of the 汲 terminal (ground potential GND), the drain current I d is from the power supply voltage line La The current flows through the transistor T r 1 3 , the connection point N12 'the transistor Tr1 2 and the data line Ld (j) toward the data driver 1 400. Further, by this, the both ends of the capacitor Cs connected between the gate and the source of the transistor Tr 13 are charged with a voltage corresponding to the potential difference based on the drain current Id. At this time, since a voltage lower than the voltage applied to the cathode (common electrode Ec) is applied to the anode of the organic electroluminescent element 〇EL (connection point N 1 2), the current does not flow to the organic electro-electrode The light-emitting element OEL does not perform a light-emitting operation. Next, during the detection voltage application period T,. The natural relaxation period Tm after the end of i is as shown in Fig. 12 of Fig. 10, and in the state where the pixel PIX is held in the selected state, the switching control signal S1 is supplied from the controller 1150 a. The switch SW1 of the data driver 140 performs an OFF operation, thereby separating the data line Ld(j) from the data driver 144 and stopping the output of the detection voltage Vdac from the DAC 42(j). Further, in the above-described detection voltage application period ΊΊ < η, the switches 1 SW2 and SW3 are turned off, the switch SW4 is set to be connected to the contact Nb, and the switch SW5 is set to be connected to the contact Nb. Thereby, because the transistors Tr1, Tr1 are kept in the on state, the pixel PIX (light-emitting drive circuit DC) maintains a state of being electrically connected to the data line Ld(j), but is applied to the data line Ld(j) by the truncation. The voltage is applied, so the other end side of the capacitor Cs (connection point N12) is set to a high impedance state. In the natural relaxation period T1 (n', the transistor Tr13 is kept in an ON state by the voltage 'charged to the capacitor Cs (between the gate and the source of the transistor Tr13) during the above-described detection voltage application period Ticn. The drain current Id continues to flow. -44 - 201113851 Then the potential of the source terminal side of the transistor T r 1 3 (connection point N丨2: the other end side of the capacitor Cs) gradually rises to near the threshold of the transistor Trl3値V V » Therefore, as shown in Fig. 9, the potential of the data line Ld(j) also changes to converge to the threshold voltage Vth of the transistor Tr13. In addition, during this natural mitigation period, η, because The potential of the anode (connection point Ν 12) of the organic electroluminescent element OEL is applied with a lower voltage than the voltage ELVSS (= GND) applied to the cathode (common electrode Ec), so current does not flow to the organic electroluminescent element. OEL, and does not perform the light-emitting operation. Next, during the data line voltage detection period T1()3, during the natural relaxation period Τ, 2, at the time point when the predetermined relaxation time t elapses, such as the first map, the first 1 3 shows 'keeping the pixel 于In the state of the selected state, the switch SW2 of the data driver 140 is turned on in accordance with the switching control signal S2 supplied from the controller 150a. At this time, the switches SW1 and SW3 are turned off, and the switch SW4 is set to and the contact Nb. Connected, the switch SW5 is set to be connected to the contact Nb. Thus, the ADC 43(j) connecting the data line Ld(j) and the DAC/ADC 144, during the natural mitigation period T1!)2, passes the predetermined mitigation time t. The data line voltage Vd is taken into the ADC 4 3 (j) via the switch SW2 and the buffer 45 (j). Here, the data line voltage Vd taken into the ADC 43(j) corresponds to the data line detection voltage Vmeas(t) shown by the above equation (11). Then, the data line detection voltage Vmeas(t) formed by the analog signal voltage taken in by the ADC 43(j) is converted into a digital data by the conversion of -45 - 201113851 in the ADC 43(j) according to the equation (14). The detection data nmsas(t) is held by the data latch 41 (j) via the switch SW5. Then, during the detection data transmission period μ, μ, as shown in Fig. 10 and Fig. 14, the pixel ΡΙΧ is set to the non-selected state. That is, the selection signal Sse 非 of the non-selected level (low level: Vgl) is applied to the selection line Ls from the selection driver 120. In this non-selected state, the switch SW5 provided to the input section of the data latch 41(j) of the data drive 140 is set to be connected to the contact Nc according to the switching control signals S4, S5 supplied from the controller 150a. The switch sw4 of the output section of the data latch 41 (j) is set to be connected to the contact Nb. Further, the switch SW3 is turned on in accordance with the switching control signal s3. At this time, the switches Swi and SW2 perform the OFF operation in accordance with the switching control signals SI and S2. Thus, the data latches 41 U of the adjacent rows are connected in series via the switches SW4, SW5 and are connected to the external controller 15〇3 via the switch SW3. Then, according to the data latch pulse signal LP supplied from the controller 150, the data of each row is latched 4丨(j+丨) (refer to FIG. 3) the detected data nm 〃 s (t) Transfer to the adjacent data latch 4 1 (j) in sequence. Therefore, the output data of the pixel Ρ χ χ 〃 ( t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t t The mode is stored in a predetermined memory area of the memory 155 provided in the controller 15A. Here, the amount of fluctuation of the threshold voltage Vth of the transistor Tr13 set by the light-emitting drive circuit DC of each pixel PIX varies depending on the driving time of each pixel ρι-46-201113851, the illuminating experience (lighting experience), and the like. The current amplification factor /5 is also because the pixel PIX has a deviation from the set 値, so the detection data nm.as(t) inherent to each pixel PIX in the memory 155. In the present embodiment, in the series of operations described above, the credit pressure detecting operation and the detected data sending operation are set to different mitigations t (= t0, t1, t2, and t3) to perform a plurality of times for each pixel PIX. . The operation of detecting the data line voltage at the different mitigation time t is as follows. The period of time during which the detection voltage is applied only once and the natural easing is continued is at a different timing t (duration time t=t0, tl, t2, t3). The data, the line detection operation and the detection data are sent out for a plurality of times, and the series of actions can be performed in a plurality of times, and the detection voltage is applied, the natural mitigation, the data line electrical measurement and the detection data are sent out. The characteristic parameters for the pixels PIX of the respective columns shown above are repeated as 'memorize the memory 155 of the controller 150a for the plurality of detection data nmeas(t) arranged for the full pixel PIX arranged on the display panel 110. Next, according to each The detection data of the pixel PIX, nm〃s(t), is performed to correct the correction data η of the threshold 値Vth of the transistor (driving transistor) Tr3 of each pixel PIX, and the correction of the current amplification factor/3 The calculation of the action. Specifically, as shown in Fig. 15, first, the correction data acquisition function circuit 156, which is provided in the controller, reads the detection data nmeas(t) corresponding to each pixel PIX of the cell 155. . For each image memory line, this time, in the middle, the voltage and the time pressure are detected by the voltage material △ 150a recalled -47- 201113851 and then 'in the correction data acquisition function circuit 1 5 6, according to the above use automatically The characteristic parameter obtaining operation of the zeroing method calculates the correction data nlh based on the equations (15) to (21) (specifically, the detection data ηTM (t.) and the bias voltage of the correction data nih are specified. (One Voffset = - 1/f xt 〇) and the correction data Δ /5. The calculated correction data n, h and △ are stored in the predetermined memory area of the memory 155 in a manner corresponding to each pixel PIX. Using the correction data nih and Δ/3, the correction data Δ 7 ? for correcting the variation in the luminous current efficiency of each pixel PIX is obtained. Fig. 16 is a timing chart showing the characteristic parameter obtaining operation of the display device of the present embodiment. (2) Fig. 17 is a functional block diagram showing the operation of generating image data for luminance measurement of the display device of the embodiment. Fig. 8 is a view showing the image for luminance measurement of the display device of the embodiment. data Fig. 19 is a view showing the operation of the light-emitting operation for luminance measurement of the display device of the present embodiment. Fig. 20 is a functional block diagram showing the correction data calculation operation of the present embodiment. Here, in the eighth and ninth drawings, as the configuration of the data driver 140, the shift register circuit 141 is omitted for display for convenience of illustration. The characteristic parameters of the present embodiment (correction data Δ々) The acquisition operation is set as shown in Fig. 16. It is set to include image data for luminance measurement which is generated by inputting the image data for luminance measurement corresponding to the pixel 各 of each column. • 48 - 201113851 Period Τ 2 < η In the light-emitting luminance measurement period for measuring the luminance of each pixel Τ IX IX 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及 及The light-emitting period T2〇2 includes the light-emitting luminance measurement period T203, and the light-emitting luminance measurement operation is performed in the luminance measurement light-emitting period Τ2()2. In the image data writing period Τ2 (n, the operation of generating the image data for luminance measurement and the image data for luminance measurement are performed in each pixel 。. The operation of generating the image data for luminance measurement is performed on the controller 丨5 0 a The correction data Δ obtained by the above-mentioned characteristic parameter acquisition operation is not corrected by nih to correct the predetermined luminance measurement digital data nd, and the luminance measurement video data nd_btl is generated. Specifically, as shown in FIG. 17, first The read data of each pixel memorized by the memory 155 of the controller i50a is read. Then, in the multiplication function circuit 153a, the digital data no' supplied from the outside of the controller l5a is subjected to the multiplication processing of the read correction data Δ. Then, based on the equations (1 8) and (19), the detection data ηηι (t.) and the bias voltage (-V 〇 ffset) of the predetermined correction data nth memorized by the memory 155 are read. = - 1 / (Mans X t 〇)). Then, in the addition function circuit 154a', the multiplied digital data (nlhx Δ) is subjected to the addition processing of the read detection data nm (1) and the offset voltage (a Voffset). By performing the above correction processing, -49-201113851, the luminance measurement image data nd_bf is generated and supplied to the data drive! ^ @ 140 〇 ' 'The brightness measurement image data is written to each pixel PIX and the detection voltage application operation (detection voltage application period .T1(n)_), the pixel to be writtenΡΙΧ When the state is set to the selected state, the grayscale voltage Vbri for luminance measurement according to the luminance measurement video data ~1 1 "d _ brt is written via the data line Ld(j). Specifically, as shown in Fig. 16. As shown in Fig. 18, first, a selection signal Ssel of a selected level (high level: Vgh) is applied to the selection line Ls to which the pixel PIX is connected, and a low level is applied to the power line La (non-light emission level: DVSS). = power supply voltage Vsa of the ground potential GND). In this state, the switch SW1 is turned on, and the switches SW4 and SW5 are set to be connected to the contact Nb, whereby the brightness supplied from the controller i5〇a is supplied. The measurement image data nd_bM is sequentially taken into the data register circuit 142' and held by the data latch 41(j) corresponding to each row. The held image data ni - bM is analog-like converted by the DAC 42(j), and The data line Ld(j) applied to each row is taken as The gray scale voltage Vbr1 for the measurement is used. The gray scale voltage V b μ for the luminance measurement is set to a voltage 满足 satisfying the condition of the equation (2 2) as described above. Thus, the light-emitting drive circuit constituting the pixel ΡΙΧ In the DC, a low-level power supply voltage Vsa (= GND) is applied to the gate terminal of the transistor Tr13 and one end side (connection point Nil) of the capacitor Cs, and the source terminal of the transistor Tr13 and the other end of the capacitor Cs are applied. The luminance measurement gray scale voltage VbM is applied to the side (connection point N12). -50- 201113851 • Therefore, the potential difference generated between the gate and the source terminal of the transistor Tr 1 3 (gate, source-to-source voltage Vgs) The drain current Id flows, and charges both ends of the capacitor Cs with the light-emission voltage V brt ) corresponding to the potential difference according to the drain current Id. At this time, because of the anode of the organic electroluminescent element OEL (connection point) N 12) Since a lower voltage is applied than the cathode (common electrode Ec), the organic electroluminescent element OEL does not flow a current, and does not perform a light-emitting operation. Next, in the luminance measurement light-emitting period T2〇2, as in the first Figure 6 shows The pixel ΡΙΧ of the column is set to the non-selected state, and each pixel ΡΙΧ is simultaneously illuminated. Specifically, as shown in FIG. 19, the selection line Ls connected to the entire pixel 排列 arranged on the display panel 110 is not applied. The selection signal Ssel of the level (low level: Vgl) is selected, and the power supply voltage Vsa of the high level (light emission level: ELVDD > GND) is applied to the power supply line La. Therefore, the light is supplied to the light-emitting drive circuit DC of each pixel ΡΙΧ. The crystal Trll' Trl2 performs a turn-off operation while remaining charged to the light-emitting voltage of the capacitor Cs connected between the gate and the source of the transistor Tr13. Therefore, the gate voltage and the inter-source voltage V gs 'the transistor τ r 1 3 of the transistor T r 1 3 are held by the light-emission voltage (=Vbrt) charged to the capacitor Cs to conduct the conduction operation and the drain current Id flows. The potential of the source terminal (connection point N12) of the crystal Tr 1 3 rises. Then, the potential of the source terminal (connection point N12) of the transistor Tr13 is raised to a cathode which is applied to the organic electroluminescent element 〇EL (common electrode -51 - 201113851)

The voltage ELVSS (= GND) of Ec) is higher, and the organic electroluminescent element is applied with a forward bias. Therefore, the light-emission drive current Iem flows from the power source line La transistor Tr13, the connection point N12, and the organic electroluminescent element 〇EL in the direction of the electrode Ec, and the organic electroluminescent element 〇EL is emitted. The light-emission drive current Iem is based on the electric power of the light-emitting voltage (=Vbrt) of the capacitor Cs that is written in the pixel PIX and held between the gate and the source of the transistor Tr in the address operation of the luminance measurement image. It is prescribed that the organic electroluminescent element OEL performs a light-emitting operation in accordance with the luminance gray scale of the image measurement in response to the luminance. Here, the luminance measurement video data nch is subjected to the above-described characteristic acquisition operation, and the correction of the current amplification factor/3 is performed based on the correction Δ /3, nih obtained so as to correspond to each pixel. The variation of the limit voltage Vth is corrected. Therefore, by writing the luminance measurement image nch of the same luminance gray scale 写入 to each pixel PIX, the light-emission drive current Iem flowing from the light-emitting drive DC of each pixel 于EL to the organic electroluminescence element 〇EL is not subjected to flow. The influence of the variation of the current amplification factor /3 or the fluctuation of the voltage Vth of the driving transistor is set to be substantially constant. Next, in the luminance measurement period Τ2 < π, the fluctuation measurement period Τ2β3 is executed. The measurement range of the luminance of the pixel 及 and the calculation operation of the correction data for correcting the luminous current efficiency of each pixel 。. The OEL is made by the electric limit of the crystal data circuit of the image data of the common optical data 13 , Δ η -52- 201113851 • The measurement action of the illuminance is as shown in Fig. 16 and Fig. 20, In each of the pixels PIX of the display panel 110, the light-emission drive current Iem set to have substantially the same current 流通 flows through the organic electroluminescent element OEL, and the organic electroluminescent element 0EL of each pixel PIX is illuminated. The luminance meter lv of each pixel ρι is measured as a digital data by a luminance meter or a CCD camera 160' on the emission surface side of the display panel 1 1 . The measured light-emission luminance L v is transmitted to the correction data acquisition function circuit 156 of the controller 150a. The correction data Δ is calculated by first calculating the correction data Δ π ' based on the equations (2 3) and (24) in the correction data acquisition function circuit 丨 56 provided in the controller 150a. Correction data for the correction data △ ^ plus the above-mentioned correction data is calculated. Here, the arithmetic processing of the correction data ΔD shown in the above formula (23) is executed in the same order as the arithmetic processing of the correction data shown in the equation (23). The calculated correction data Δ is cold, and is stored in the predetermined memory area of the memory 丨5 5 in a manner corresponding to each pixel PIX in the same manner as the above-described detection data n_as(t) or correction data n, h. (Display Operation) Next, the display operation (light-emitting operation) of the display device of the present embodiment will be described. In the light-emitting operation of the display device, the correction data ηι|ι, Λ/3); is used to correct the image data so that each pixel ρ 1 发 emits light at a desired gray level. -53-201113851 Fig. 21 is a timing chart showing the light-emitting operation of the display device of the embodiment. Fig. 22 is a functional block diagram showing the correction operation of the image data of the display device of the embodiment. Fig. 2 is a view showing the operation of the operation of writing the corrected image data of the display device of the embodiment. Fig. 24 is a view showing the operation of the light-emitting operation of the display device of the embodiment. Here, in the 23rd and 24th drawings, as the configuration of the data driver 140, the illustration of the shift register circuit 141 is omitted for convenience of illustration. As shown in FIG. 21, the display operation of the present embodiment is set to include the image data writing period T3 (H, and the corresponding image data) which are generated by writing the desired image data so as to correspond to the pixels PIX of the respective columns. The luminance gray scale of the video data causes the pixel light-emitting period Τn of the light-emitting operation of each pixel PIX. During the image data writing period Τ3 (Η, the operation of generating the corrected image data and correcting the operation of the image data to be written into each pixel 。 are performed. The correction image data generation operation is performed by the controller 150a, and the predetermined image data nd composed of the digital data is corrected by using the correction data Δ0, Δ7?, and nih obtained by the above-described characteristic parameter acquisition operation. And the image data (corrected image data) nd_ump that has been corrected is supplied to the data driver 140 »

Specifically, as shown in FIG. 22, in the voltage amplitude setting function circuit 152a, the image data (second image) including the RGB-54-201113851 color gradation 供给 supplied from the outside of the controller 150a is provided. The data nd sets the voltage amplitude corresponding to each color component of RGB by referring to the reference table 151'. Then, the correction data Δ /5 〃 ' of each pixel stored in the memory 1 55 is read by the multiplication function 153a by multiplying the read correction data for the image data no' of the set voltage. Then 'read the memory of the specified correction data n, h, the detection data nm...(t.) and the bias voltage (-v〇ffset = - 1/( f xt.))' in the addition function In the circuit 154a, the read data ((1) and the offset voltage (-Voffset) are processed by the multiplied digital data (ndX Δ cold))' by performing the above-described series of correction processing. The corrected image data heart/.·^ is generated and supplied to the data driver 14〇. Further, the operation of correcting the image data to be written into each pixel is set to a state in which the pixel to be written is set to the selected state, and the data is transmitted. The line Ld(j) is written to correct the gray scale voltage Vdata of the image data nd, mp. Specifically, as shown in Fig. 21 and Fig. 23, first, the selection line Ls to which the pixel PIX is connected is applied. The selection signal Ssel' of the level (high level: Vgh) and the power supply voltage Vsa of the low level (non-lighting level: DVSS = ground potential GND) is applied to the power line La. Here, the state 'selects the switch S w 1 Turn on the action, and switch SW4 and SW5 It is set to be connected to the contact point Nb, whereby the corrected image data supplied from the controller 15A is sequentially taken into the data register circuit 142' and by the data latch 41 corresponding to each line ( j) Keep. -55- 201113851 The image data held by ndwnp is analogically converted by DAC42(j) and applied to the data line Ld(j) of each row as the grayscale voltage (third voltage) Vdata. The voltage Vdata is set to the following equation (25) according to the definition 'of the formula (14).

Vdata = Vx-AV(nd comp-i)) - (25) Therefore, the light-emitting drive circuit DC constituting the pixel PIX is applied to the gate terminal of the transistor Tr13 and the terminal end (connection point N1 丨) of the capacitor Cs. The low-level power supply voltage Vsa (= GND) applies a gray-scale voltage Vdata corresponding to the corrected image data nd_e〇mp to the source terminal of the transistor Tr13 and the other end side of the capacitor Cs (connection point N1 2). Therefore, the drain current Id of the potential difference (gate-source-to-source voltage Vgs) generated between the gate 'source terminals of the transistor Tr 1 3 flows, and corresponds to the potential difference according to the gate current Id. The light-emitting voltage (=Vdata) charges both ends of the capacitor Cs. At this time, since a lower voltage than the cathode (common electrode ec) is applied to the anode (connection point N12) of the organic electroluminescent element 0EL, the organic electroluminescent element OEL does not flow a current, and does not perform a light-emitting operation. Then, in the pixel light-emitting period ΊΊμ, as shown in Fig. 2, the pixels PIX of the respective columns are set to a non-selected state, and each pixel is simultaneously illuminated. -56- 201113851 • Specifically, as shown in Fig. 24, a selection signal Ssel of a non-selected level (low level: Vgl) is applied to the selection line Ls connected to the full pixel PIX of the display panel 110, and The power supply line La applies a power supply voltage Vsa of a high level (light emission level: ELVDD > GND). Therefore, the transistors Tr 11 and Tr 12 provided in the light-emitting drive circuit DC of each pixel PIX are turned off (OFF) to maintain the light-emission to the capacitor Cs connected between the gate and the source of the transistor Tr 13 . Voltage (=V data: gate voltage, source-to-source voltage V gs). Therefore, when the drain current Id flows to the transistor Tr1 3, the potential of the source terminal (connection point N12) of the transistor Tr13 rises to be higher than that of the cathode (common electrode Ec) applied to the organic electroluminescent element 0EL. When the power supply voltage ELVSS (= GND) is higher, the light-emission drive current lem flows from the light-emitting drive circuit DC to the organic electroluminescent element 〇EL, and the organic electroluminescence element 0EL emits light. Since the illuminating drive current iein is defined based on the voltage 发光 of the illuminating voltage (=V.data) held between the gate and the source of the write operation transistor Tr 13 of the corrected image data, the organic electro The light-emitting element 0EL emits light in response to the luminance gray scale of the image data for luminance measurement. Further, in the above-described embodiment, as shown in FIGS. 16 and 2, in the operation and display operation for acquiring the correction data Δ7?, the brightness measurement video data or the corrected image data is written in the specific After the operation of the pixel PIX of the column (for example, the first column) is completed, the pixel 该 of the column is set to the hold state until the operation of the pixel 写入ίχ in which the image data is written in another column (the second column or later) is completed. -57- 201113851 Here, in the hold state, the selection signal Ssel of the non-selected level is applied to the selection line Ls of the column, and the pixel ρίχ is set to the non-selected state, and the power supply line La is applied with a non-light-emitting level. The voltage Vsa is set to a non-lighting state. As shown in Fig. 16 and Fig. 21, the set time of this hold state varies depending on each column. Further, after the operation of writing the brightness measurement image data or the corrected image data to the pixels PIX of the respective columns is completed, the driving control for causing the pixel PIX to emit the light is performed immediately, and the holding state may not be set. As described above, in the display device (the light-emitting device including the pixel driving device) and the driving control method of the light-emitting device of the present embodiment, the unique auto-zeroing method is applied to the present invention at different timings ( The mitigation time is a method of taking a plurality of times of the characteristic parameters of the data line which is taken into the data line and converted into a test data composed of the digital data. Therefore, according to the present embodiment, it is possible to obtain a parameter for correcting the variation of the threshold voltage of the driving transistor of each pixel and the variation of the current amplification factor of each pixel. Therefore, according to the present embodiment, since the correction processing for compensating for the variation of the threshold voltage and the variation of the current amplification ratio of each pixel can be applied to the image data written in each pixel, regardless of the characteristic change or characteristic of each pixel The state of the deviation allows the light-emitting element (organic electroluminescence element) to emit light in accordance with the original brightness gray scale of the image data, thereby realizing active organic electroluminescence with good light-emitting characteristics and uniform image quality. Drive System. Further, in the above-described embodiment, the light-emitting luminance of each pixel is measured in a state where a uniform light-emission drive current is set to flow in each pixel. Therefore, according to the present embodiment, it is possible to obtain a parameter for correcting the variation in the luminous current efficiency between the pixels, and to obtain a parameter relating to the correction of the variation of the current amplification ratio between the pixels, and to correct the variation of the luminous current efficiency. Correct the data of the parameters and remember. Therefore, according to the present embodiment, since the correction processing of the variation of the threshold voltage and the variation of the current amplification factor and the luminous current efficiency can be applied to the image data written in each pixel, regardless of the characteristics of each pixel. The state of the variation or the deviation of the characteristics allows the light-emitting element (organic electroluminescence element) to emit light in response to the original luminance gray scale of the image data. Further, the processing for calculating the correction data for correcting the variation of the current amplification factor including the luminous current efficiency can be performed in a sequence of one of the controllers 150a having the single correction data acquisition function circuit 156. Since the processing of the correction data for the variation of the threshold voltage of the driving transistor is compensated, it is not necessary to provide an individual configuration (function circuit) in accordance with the content of the calculation processing of the correction data, and the device scale of the display device (light-emitting device) can be simplified. <Second Embodiment> In the first embodiment, a capacitor connected between the gate and the source terminal of the driving transistor by the writing operation to the pixel PIX during the image data writing period will be described. The voltage 値 of the illuminating voltage at which Cs is charged does not change during the writing period and the illuminating period. -59- 201113851 However, the voltage 値 of the illuminating voltage is actually affected by the voltage variation of each signal line due to the capacitance coupling caused by various parasitic capacitances (capacitance components) other than the capacitor Cs for driving the electric crystal. Therefore, the voltage 値 of the illuminating voltage fluctuates during the writing period and the illuminating period. In addition to the configuration of the first embodiment, the second embodiment is provided with a configuration for correcting the fluctuation of the light-emitting voltage caused by the capacitance 附加 added to the parasitic capacitance (capacitance component) of the driving transistor. Incidentally, the same configurations as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be simplified or omitted. The display device of the present embodiment has substantially the same configuration as the display device 100 of the first embodiment, and includes a display panel 110 having the same configuration as that of the first embodiment, a selection driver 120, a power driver 130, and a data. Driver 140. Further, the pixel PIX arranged on the display panel 110 has the same configuration as that of the first embodiment. The configuration of the controller 15 5 Ob is different from that of the controller 150a of the first embodiment. Hereinafter, differences from the first embodiment will be mainly described. Fig. 25 is a functional block diagram showing the function of the controller applied to the display device of the embodiment. As shown in Fig. 25, the controller (image data correction circuit) of the present embodiment has a voltage amplitude setting function circuit (image data correction) including a reference table (LUT: unique parameter setting circuit) 151. Circuit 152b 'Multiplication function circuit (image data correction circuit) 153b, 157a, 15 7b, addition function circuit (image data correction circuit) 1 54b, memory (remember -60-201113851 memory circuit) 1 5 5, correction data acquisition A functional circuit (characteristic parameter take-out) 156 and a K-parameter setting circuit (inherent parameter setting circuit) 158. In the configuration of Fig. 25, a multiplication function circuit (image data correction circuit) 157a and a K parameter setting circuit (inherent parameter setting circuit) 158 are further provided in the fifth embodiment of the first embodiment. Further, the functions of the voltage amplitude setting function circuit 152b, the multiplying function circuit, and the adding function circuit 54b are partially the amplitude setting function circuit 1 5 2 a of the first embodiment, the multiplying function circuit 1 5 3 a, and the adding power path 15 The functions of 4 a are different. The voltage amplitude setting function circuit 1 5 2b converts the voltages of the respective colors of red (R), green (G), and blue (B) by referring to the reference table 151 for the image data composed of the externally supplied bit data. amplitude. The maximum amplitude of the voltage amplitude of the image data converted by the voltage amplitude setting circuit 15 2b is determined by subtracting 修正 below the correction amount of the characteristic parameter of the factor from the maximum value of the input range of the DAC 42 described above. Here, the reference table 151 referred to by the voltage amplitude function circuit 1 52 2b, as will be described later, illuminates the illuminating voltage caused by the parasitic capacitance (electrical component) added to the driving transistor of each pixel PIX. In addition to the change schedule preset table (r table), the conversion table set in the reference table 1 5 1 will be described in detail later. Further, the voltage amplitude setting function circuit 152b has a through function or a bypass path for directly outputting the digital data. Further, when the characteristic parameter obtaining operation of the automatic zeroing method is applied, the input digital position is set so as not to be directly outputted by the conversion processing using the voltage amplitude of the reference table 151. The number of energies of the power supply 157b 153b should be set in the setting of each image. This input is described, and the -61 - 201113851 multiplication function circuit 1 5 3b is a current correction data Δ/? obtained by multiplying the image data by the detection data related to the characteristic change of the root PIX, or contains the basis for each pixel. The correction data Δ /3 of the current amplification factor /3 of the data of ρΐχ, and the parameter Κ of the variation of the voltage Vel of the parasitic capacitance added to the driving transistor of each pixel. The multiplication function circuit 157a multiplies the characteristic detection data of each pixel ρι by the parameter Κ for correcting the variation of the emission voltage vel of the organic electric OEL of each pixel Κ. The multiplication function circuit 157b multiplies the threshold voltage compensation component (bias voltage) of the drive transistor obtained based on the detection data of each pixel PIX by the parameter addition function circuit 154b of each pixel 对 to the multiplication function. The circuit correction data or the image data is added to the multiplication by the detection data of the parameter K and the pixel PIX and the compensation voltage of the threshold voltage Vth in the multiplications 157a and 157b. Then, the corrected image data is supplied as a repair to the data drive 140. The memory 1 5 5 stores the detection data of the PIX from the data driver 丨4 and the correction data acquisition function circuit 56. The positive data is stored in correspondence with each pixel PIX. At the time of the addition processing of the addition function circuit 154b and the correction data acquisition processing of the function circuit 156, the acceleration of the addition and the pixel magnification/3 is corrected to correct the change in the definition according to the definition. Light-emitting element characteristic change phase voltage Vth complement K ° 153b multiplied by the function circuit change (bias voltage) Corrected data acquisition function circuit obtained in each pixel of the positive image data -62-201113851 154b and correction The data acquisition function 156 reads the detection data from the memory i55. The K parameter setting circuit 158 sets a parameter κ for correcting the fluctuation of the light emission voltage caused by the parasitic capacitance (capacitance component) added to the driving transistor provided in each pixel ρι, in accordance with the operating state of the controller 150b. constant. The κ parameter setting circuit 158 sets the parameter κ to 1 在 when applying the characteristic parameter obtaining operation of the automatic zeroing method described later. Therefore, in the multiplication function circuit 153b and the addition function circuit i54b, multiplication correction or addition correction is performed on the video material (or digital data) without substantially adding the state of correction by the parameter K. Further, the 'K parameter setting circuit' 5 sets the parameter K to, for example, 1.1 when performing a display operation based on the image information of the image data. Therefore, in the multiplication function circuit 153b and the addition function circuit 154b, multiplication correction or addition correction which adds the influence of the parasitic capacitance is performed on the image data (or digital data). Here, the parameter K of the parameter K set by the K parameter setting circuit 158 can be calculated in advance based on the capacitance 附加 added to the parasitic capacitance of the driving transistor at the design stage of the display panel 110 or each pixel PIX, and It is set to be appropriately switched in response to the operation state of the controller 150b. Further, the calculation method of the parameter K will be described later. Further, in the controller 150b shown in Fig. 5, the correction data acquisition function circuit 156 may be an arithmetic unit provided outside the controller 150b. -63- 201113851 Further, in the controller 150b shown in Fig. 5, the memory 155 may be an individual memory as long as it stores the detection data and the correction data associated with each pixel PIX. Further, these memories 155 may be memory devices provided outside the controllers 15 5b. Further, the image data supplied to the controller 15 5 Ob extracts, for example, a luminance gray scale signal component from the image signal, and forms, according to each column of the display device 100, the luminance gray scale signal component as a serial data composed of digital signals. . Next, in the pixel PIX having the light-emitting drive circuit DC having the same configuration as that shown in FIG. 6, the organic electroluminescent element 〇EL when the organic electroluminescent element 0EL is emitted after the image data is written is described. The relationship between the anode and the inter-cathode voltage (the voltage across the organic electroluminescent element 0EL: the illuminating voltage Vel) and the current flowing from the illuminating drive circuit DC to the organic electroluminescent element OEL (the illuminating driving current Iel). Fig. 26 is a view showing an operation state of the organic electroluminescence device to which the pixel of the light-emitting drive circuit of the embodiment is applied, when light is emitted. Fig. 27 is a characteristic diagram showing the relationship between the light-emitting voltage of the electroluminescence element and the light-emission drive current of the pixel of the present embodiment during the light-emitting operation. In the light-emitting operation of the organic electroluminescent element OEL of the pixel PIX of the present embodiment, as shown in Fig. 26, a selection signal of a non-selected level (low level: Vgl) is applied from the selection driver 120 via the selection line Ls. Ssel, and the pixel PIX is set to a non-selected state. -64- 201113851 At this time, 'the transistor Tr丨丨 and Tr 1 2 of the light-emitting drive circuit DC perform an off operation', and the gate and the terminal of the transistor Tr13 are electrically cut off, and the source is extremely The sub-connection point N 1 2 and the data line Ld are electrically cut and the power supply voltage Vsa (= ELVDD)e is applied to the pixel PIX from the power driver 丨3 〇 via the power supply line La in the non-selected state. Therefore, the voltage charged from the above-described image data (gray scale voltage Vdata) to the capacitor Cs (the drain of the transistor Tr13, the source-to-source voltage Vgs) is maintained, and the 汲 terminal of the transistor Tr 13 is connected. Point N13) applies a power supply voltage ELVDD of a higher potential than the source terminal (connection point N12). Therefore, as shown in Fig. 26, the light-emission drive current I e 1 corresponding to the gate and source-to-source voltage V gs of the crystal Tr 13 flows from the power source driver 13 through the power source line La and the transistor Tr13 to the organic electro-electric Light-emitting element 〇EL. The circuit characteristics of the pixel PIX (light-emitting drive circuit DC and organic electro-luminescence element 0EL) in this case were verified. In the writing operation of the image data (grayscale voltage) which is the same as the configuration shown in Fig. 7 described above, the voltage between the connection points N 1 1 - N12 of the light-emitting drive circuit DC (i.e., the gate of the transistor Tr13) The voltage between the pole and the source Vgs and the voltage across the capacitor Cs determines the current 値 of the drain current (ie, the write current) Id flowing between the drain and the source of the transistor Tr. Ideally, the voltage between the connection points N 1 1 - N 1 2 is maintained by the capacitor Cs even when the light is emitted after the end of the writing operation. -65-201113851 However, in the pixel PIX to which the light-emitting drive circuit DC of the present embodiment is applied, the potential applied to the selection signal Ssel of the selection line Ls or applied to the power supply line when shifting from the writing operation to the light-emitting operation is performed. Drive control is performed in such a manner that the potential of the power supply voltage Vsa of La changes. Namely, the potential of the selection signal Ssel changes from Vgh to Vgl, and the potential of the power supply voltage Vsa changes from DVSS to ELVDD. Therefore, the voltage between the connection points N 1 1 - N 1 2 is affected by these potential changes due to the capacitive coupling via the parasitic capacitances located in the light-emitting drive circuit DC. Further, in the pixel PIX (light-emitting drive circuit DC) of the present embodiment, when the transfer operation is shifted to the light-emitting operation, the transistor Tr12 is turned off, and the gray scale voltage Vdata is cut off to the connection point N12 (the transistor Tr3) The application of the source terminal). Further, during the light-emitting operation, the light-emission drive current Iel flows through the organic electroluminescent element OEL via the connection point N12. Therefore, when the potential of the connection point N12 fluctuates, the voltage between the connection points N 1 1 - N 1 2 is also affected by the potential fluctuation of the connection point N 1 2 . The variation of the gate and source-to-source voltage Vgs (voltage between the connection points Nil - N 1 2) of the transistor Tr 13 means that the drain and the source between the transistors Tr 13 flow through the organic electroluminescence. The light-emission drive current Iel of the element OEL varies. In other words, it means that the current 发光 of the light-emission drive current Iel is affected by the 値 of the voltage (light-emitting voltage Vel) across the organic electroluminescent element OEL associated with the potential of the connection point N12. -66- 201113851 Further, in the light-emitting drive circuit DC, even when the potential of the light-emitting contact N12 fluctuates, the inter-electrode voltage Vgs of the transistor Tr1 (the voltage between the connection points N1 1 - N12) is not necessarily the above. The variation of the gate voltage and the source-to-source voltage Vgs of the transistor Tr13 is affected by the parasitic capacitance of the connection point Nil (the gate terminal), and is subjected to the voltage Ve of the organic electroluminescent element OEL. The light-emitting drive circuit DC is not a drive control method for changing the voltage between the gate 'source voltage points N 1 1 - N 1 2 between the gates of the transistor Tr 13 during the light-emitting operation. Here, the correction method when the light-emission drive current Iel flowing through the light-emitting element OEL depends on the light-emission voltage Vel of the organic electric device OEL will be described based on the above-described situation. First, a parameter indicating the influence of the parasitic capacitance that changes the gate and source of the transistor Tr 13 (the parameter specific to each pixel is expressed as the following equation (22). Σ^ΝΙΙ-χ Κ:=^ - ,

LnII-Ν12 χ = Ν12, N13, N14 In the equation (22), CNn-N12 is equivalent to a capacitor Cs connected between the transistor pole and the source. CN11-Nl3 is equivalent to an electrical gate. The gate capacitance of the transistor Tr1 between the poles. When CN1 is connected, the gate and source will change. The action only affects when the line is ringing. Using the principle Vgs (connecting the organic electroluminescent element 3 voltage Vgs defeat) K definition...(26) Trl3 gate crystal Tr13 1 - N 1 4 equivalent -67- 201113851 Transistor Trll connected to the gate of transistor Tr3 The gate and source capacitance. Here, it is assumed that the light-emission drive current iei flowing through the organic electroluminescent element OEL in the pixel PIX in the light-emitting operation state shown in Fig. 26 has a relationship shown in Fig. 27 with respect to the light-emission voltage Vel. In Fig. 27, Vst is the light-emission starting voltage, and Vel_max and Iel_max are the light-emitting voltage and the light-emission driving current when the maximum luminance of the pixel PIX is emitted. As shown in Fig. 27, when the voltage 値 of the light-emission voltage Vel exceeds the light-emission start voltage Vst, the current 値 of the light-emission drive current Iel increases substantially linearly as the light-emission voltage Vel rises. In the present embodiment, when the above definition (the equation (26)) and the relationship between the light-emission voltage Vel and the light-emission drive current iei (Fig. 27) are present, in the configuration of the controller 150b shown in Fig. 25 The voltage amplitude setting function circuit 1 5 2b performs data conversion for adding the parameter K to the image data nd composed of the digital data input from the outside by referring to the reference table 151. Fig. 28 is a view for explaining the data conversion processing of the reference table applied to the controller of the embodiment. As shown in Fig. 28, the reference table applied to the present embodiment is set such that the converted material (output data) n < Uui is substantially linear with respect to the input digital data (image data) n d . Here, in Fig. 28, SD1 indicates the gate and source-to-source voltage Vgs of the transistor Tr13 due to the influence of the parasitic capacitance (i.e., corresponding to -68·201113851 fee* organic electroluminescent element OEL) The characteristic curve of the conversion characteristic when the variation of the light-emission voltage Vel) is not corrected. Further, SD2 is a characteristic line indicating a correction component of the conversion data corresponding to the amount of fluctuation of the emission voltage Vel of the organic electroluminescent element 0EL due to the influence of the parasitic capacitance. Further, SD3 is a characteristic line indicating the conversion characteristics when the fluctuation of the light-emission voltage Vel of the organic electroluminescent element 0EL due to the influence of the parasitic capacitance is corrected. Here, SD3 is corrected to have a data 加 which adds the correction component indicated by SD2 to the conversion data shown in SD1. Specifically, the input digital data is subjected to the data conversion processing in which the parameter K is added as the correction data as shown in the following equation (27), and is output as the conversion data naw. Here, Δ V is the voltage width corresponding to one bit of the digital data shown in the above formula (13). r»d ^ nd + X AV x (Vel - Vst) = ndout (27) Further, in the present embodiment, in addition to the above-described borrowing voltage amplitude setting function circuit 152b, the parameter κ is added to the image data nd. In addition to the conversion processing, the multiplication function circuit 153b and the addition function circuit 15bb of the controller 丨5 〇b shown in FIG. 25 are further subjected to correction processing of adding the parameter κ. Here, the parameter K used in the data conversion processing and the correction processing is set to Κ= when the characteristic parameter (correction-69-201113851 material nlh, Δ々) to which the above-described automatic zeroing method is applied is obtained. 1. Further, when the response image data _ 2 executed after the characteristic parameter acquisition operation of the photocurrent efficiency is obtained, the parameter Κ is set to, for example, Kzl.i. Then, the parameter κ of the influence of the parasitic capacitance obtained during the first parameter acquisition operation described above and the parasitic capacitance during the lithography operation is used, and the characteristic parameter of the organic electroluminescent element 0EL in each pixel is used. . Here, first, in the specific image data nd (here, measurement digital data: first image data) supplied from the outside as shown in FIG. 25, the correction data calculated by the equation (21) is n. The parameter K, which is not included in h and Δ, is applied to a series of image data for business measurement nd_br^ shown below, and then input to the data driver 140, the element PIX) for voltage driving. Specifically, the luminance measurement video data nd_ luminance measurement digital data nd is added to the pixel PIX, and the voltage amplitude is set, the current is discharged (Δ /3 multiplication correction), and the threshold voltage Vth is varied. The characteristic yS which is used to compensate for the display dynamics of a series of characteristic parameter image information and the luminous current efficiency D1 150b for compensating for the execution of the compensation is described as "brightness data". By the calculation of the equation (18) and the calculation as defined by the equation (26), the display panel 1 1 0 is produced. (The generation of the image bM is corrected by the deviation of the parasitic capacitance at the time of light emission/3. Correction (ni ii addition correction) -70- 201113851 First, 'in the voltage amplitude setting function ί of the controller 150b', refer to the reference _ number & data nd having the conversion characteristic as shown in Fig. 28 as the first 27) The data conversion conversion data shown in the equation is followed by 'in the multiplication function circuit 153b, the set electrical data (conversion data) nd (ju, multiplied by the parasitic capacitance parameter K and used to correct the current) Correction factor X Π d 〇ut X △ /5 ) of the deviation of the magnification ^. Then 'in the addition function circuit 1 54b, the multiplicative bit data (Kxn <uulX △ cold) is added, and the multiplied by Correct the parameters of the affected K To correct the threshold voltage v voltage vth variation material Kxn.h (= Kxnm...(1)-KxVoffset) (Kx (n "ulx △ 此外 ' 在 在 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 亮度 ) ) ) ) ) ) ) ) ) ) ) ) ) ) In the method of generating np, in the setting function circuit 1 5 2b, by adding the influence of the capacitance of the pixel PIX according to the parameter K, the digital data (image data) nd is corrected as the illuminating voltage Vel of the organic electroluminescent element 〇EL. After the conversion, the current amplification factor correction (Δβ multiplication correction) is performed in the multiplication function circuit 1 5 3 b. In this case, the correction itself is corrected by Δ /3 multiplication. However, the image shown in Fig. 28 The description of the data conversion processing is smaller than the influence of the parasitic capacitance in the pixel PIX (the conversion characteristic in the case where the pixel is not positive: the characteristic line SD 1), the correction path 152b H51, the opposite, and the amplitude of the production pressure. The affected material △ Lu (correction of the raw capacitor for the K method), the parameter K of the parasitic voltage across the amplitude of the immobile voltage, and the parameter K of the deviation of the data. -71 - 201113 851 material, and when the influence of parasitic capacitance is added (conversion characteristic in the case of V e 1 correction: characteristic line SD3); 5 the corrected digital data, the effect of Vel correction on /3 correction is substantially negligible Then, the digital data (Kx(ndt)ulXA /5 +nlh)) to which the correction processing has been performed is supplied as the luminance measurement video data 'to the data register circuit 142 of the data driver 140. The data driver 140 converts the luminance measurement video data n taken into the data register circuit 142 into an analog signal voltage by the DAC 42 of the DAC/ADC circuit 144. Here, as shown in FIG. 4 described above, since the output input characteristics (conversion characteristics) of the DAC 42 and the ADC 43 are set to be the same, the gray scale voltage (second voltage) V of the luminance measurement generated by the DAC 42 is based on The definition shown in the above formula (14) is defined as the following formula (28). This gray scale voltage Vbrt is supplied to the pixel PIX via the data line Ld.

Vbrt = Vx - AV(nd brt -1)) (28) In this manner, a series of correction processing is performed on a specific image data, and a gray scale voltage vb for luminance measurement is generated, and written in the display panel 110, Thereby, the current 値 of the light-emission drive current Iel flowing from the light-emitting drive circuit DC of each pixel PIX to the organic electroluminescent element OEL can be set to a constant value without being biased by the current amplification factor or driving the transistor. The effect of the variation of the threshold voltage Vth is not affected by the parasitic capacitance when the light-emitting drive circuit DC is driven. -72- 201113851 Then, in this state, the display panel i 0 is illuminated, and the light emission luminance Lv (cd/m2) of each pixel 测量 is measured. Here, as for the method of measuring the luminance of each pixel PIX, the same method as that described in the above-described third embodiment can be applied. Then, as described above, the correction data (fourth characteristic parameter) Δ $ of the deviation between the current amplification factor Θ and the luminous current efficiency is obtained based on the measurement of the luminance of the light emission. The correction data n, h obtained by the characteristic parameter acquisition operation, Δ /3 obtained based on the measurement of the luminance of the light, and the parameter K are in the display operation described later 'for the display device 1 according to the present embodiment. Externally input image data η <ι 'Setting voltage amplitude (data conversion in equation (23)), current amplification factor/3 deviation correction (△ no multiplication correction), illuminating current efficiency ^ deviation correction (△ multiplication correction), threshold It is used when the corrected image data nd^mp is generated by the variation correction of the 値 voltage Vth (n, h addition correction) and the variation correction of the illuminating voltage Vel caused by the parasitic capacitance in the pixel PIX (kappa multiplication correction). Therefore, since the gray scale voltage Vdata corresponding to the analog voltage nd „ mp of the image data nd_„mp is supplied from the data driver 140 to the respective pixels PIX via the data line L10, the organic electroluminescent element 〇EL of each pixel PIX can be made When it is affected by the variation of the current amplification factor A or the luminous current efficiency 、, the threshold voltage of the driving transistor, the voltage Vth, or the variation of the illuminating voltage Vel, the illuminating operation is performed at the desired gradation of the brightness, and the illuminating operation can be achieved. In the following, the characteristic parameter obtaining operation using the automatic zeroing method described above will be described in a manner related to the device configuration of the present embodiment. -73- 201113851 Further, in the following description, regarding the above characteristic parameters The operation of obtaining the same operation is simplified or omitted. First, the correction data nlh for correcting the variation of the threshold voltage Vth of the driving transistor of each pixel and the current amplification factor for correcting each pixel are obtained. Correction data of the deviation. Fig. 29 is a timing chart showing the operation of obtaining the characteristic parameters of the display device of the embodiment. Fig. 30 is a view showing the operation of the voltage application operation for detecting the display device of the embodiment. Fig. 31 is a view showing the operation of the natural mitigation operation of the display device of the embodiment. Fig. 33 is a view showing the operation of the data transmission operation of the display device of the embodiment. Fig. 34 is a view showing the operation of the detection data transmission operation of the display device of the embodiment. Here, in the 30th to 33rd drawings, the configuration of the data driver 140 is omitted. The illustration of the shift register circuit 141 is omitted for convenience of illustration. In the operation of the characteristic parameters (correction data n, h, Δ yS ) of the form, as shown in Fig. 29, each pixel PIX of each column is set to include the detection voltage application period in the predetermined characteristic parameter acquisition period Tcpr. Natural relaxation period Τι (»2, data line voltage detection period Tl <) 3 and the detection data delivery period Τ 1 (μ. -74 - 201113851 • Here, the natural relaxation period Τ !. 2 corresponds to the above-mentioned relaxation time t, and in Fig. 29, for convenience of illustration, The relaxation time t is set to the time of one time, but in practice, the data line voltage is repeatedly executed during the natural relaxation period T, the different relaxation times t (= t 〇, t, 12, 13 ) in 〇 2 Detection operation (data line voltage detection period T1(n) and detection data transmission operation (detection data transmission period Τ1 (Μ). First, in the detection voltage application period T i.i, as shown in Fig. 2, Fig. 3 0 As shown in the figure, the pixel PIX (the pixel PIX of the first column in the figure) which is the target of the characteristic parameter acquisition operation is set to the selected state. That is, the selection line Ls to which the pixel PIX is connected is selected from the selection driver 120. The selection signal Ssel of the level (high level: Vgh) simultaneously applies a power supply voltage V sa of a low level (non-light-emitting level: DVSS = ground potential GND) from the power source driver 130 to the power source line La. Then, the state is selected here, According to the cut from the controller 1 50a The control signal S1 is turned on, and the switch SW1 provided in the output circuit 145 of the data driver 140 is turned on, thereby connecting the data line Ld(j) and the DAC 42(j) of the DAC/ADC 144. Further, according to the slave controller 150b The switching control signals S2 and S3 are turned off by the switch SW2 provided in the output circuit 145, and the switch SW3 connected to the contact Nb of the switch SW4 is turned off. Further, the switching control signal S4 is supplied based on the slave controller 150b. , the switch SW4 placed in the data latch circuit 143 is set to be connected to the contact point Na g , and according to the switching control signal S5 , the switch SW5 is set to be connected to the contact point Na. -75- 201113851 Then 'to generate the established The digital data nd of the voltage detection detection voltage Vdac is sequentially taken from the data driver 1 4 取 into the data register circuit 1 42 ' and held in the data lock 41(j) via the switch SW5 corresponding to each row. Then 'data latch 4 1 (j) holds the digital data η <1 is input to the DAC 42U of the DAC/ADC circuit 144 via the switch SW4 to perform analog conversion, and is applied to the data line LdU of each row as the detection voltage Vdac. Here, in order to generate the detection voltage Vdac, the digital data (image data) na is used in the above-described controller 150b, and the specific digital data (image data) for obtaining the parameter input from the outside is used to set the function circuit using the voltage amplitude. The 152b, the multiplication function circuit i53b, and the addition function circuit 15 are generated by applying data conversion and correction processing. In this case, the parameter K' set to the data conversion processing of the reference table 151 and the correction processing of the multiplication function circuit 153b and the addition function circuit 154b is set to K = 1.0 by the K parameter setting circuit 158. Therefore, the data conversion processing performed by the voltage amplitude setting function circuit 15 2b with reference to the reference reference table 151 is performed because the digital data input according to the equation (23) is directly outputted, so the voltage amplitude is substantially set and set. The functional circuit 152b is set to be in the state of straight-through or bypass. Further, since the correction data Δ /3, nltl 使用 used for the correction processing of the multiplication function circuit 153b and the addition function circuit 154b are not acquired, these are set to start 値' or the multiplication function circuit 153b and the addition function circuit 1 54b. It is set to, for example, a through state. -76-201113851 * Therefore, the digital data outputted from the voltage amplitude setting function circuit 152b is directly supplied to the data driver 140 as the digital data nd for setting the detection voltage Vdac. Therefore, the transistors Tr11 and Tr12 provided in the light-emitting drive circuit DC constituting the pixel PIX are turned on, and the low-level power supply voltage Vsa (= GND) is applied to the gate terminal of the transistor Tr13 via the transistor Tr1 1 and One end side of the capacitor Cs (connection point Ν 1 1). Further, the detection voltage Vdac applied to the data line Ld(j) is applied to the source terminal of the transistor Tr13 and the other end side (connection point N12) of the capacitor Cs via the transistor Tr1 2 . In this manner, by applying a potential difference larger than the threshold voltage Vth of the transistor Tr13 to the gate and source terminals of the transistor Tr13 (i.e., both ends of the capacitor Cs), the transistor Tr1 3 is caused to proceed. The conduction action is performed, and the drain current Id corresponding to the potential difference (gate voltage, source-to-source voltage Vgs) flows. At this time, since the potential of the source terminal of the transistor Tr13 (detection voltage Vdac) is set lower than the potential of the 汲 terminal (ground potential GND), the drain current Id is from the power supply voltage line La via the transistor Tr13 The connection point N12, the transistor Tr12, and the data line Ld(j) flow toward the data driver 140. Further, both ends of the capacitor Cs connected between the gate and the source of the transistor Tr 13 are charged with a voltage corresponding to the potential difference according to the drain current Id. At this time, the current does not flow to the organic electroluminescent element OEL, and the light-emitting operation is not performed. -77- 201113851 Next, 1 ' during the detection voltage application period τ. After the end of the natural relaxation period &(> 2 ' as shown in Fig. 29 and Fig. 31, the switching control signal supplied from the controller 丨5 〇b is maintained while the pixel Ριχ is held in the selected state. S 1 'cuts the switch sw 1 of the data driver 1 4 , to thereby "separate the data line Ld(j) from the data driver 14 , while stopping the output of the detection power from the DAC 42 (j). 'With the above-described detection voltage application period T|(n), the switches SW2 and SW3 are turned off, and the switch SW4 is set to be connected to the contact Nb. The switch SW5 is set to be connected to the contact Nb. The transistors Tr 1 1 and Tr 1 2 are kept in an on state, and although the pixel PIX (light-emitting drive circuit DC) maintains a state of being electrically connected to the data line Ld(j), but because the voltage is applied to the data line LdU, the voltage is applied. The other end side of the capacitor Cs (connection point N12) is set to a high impedance state. Here, the natural relaxation period T i 02 ' is charged to the capacitor Cs (the gate of the transistor Tr13) by the detection voltage application period Τιβ1 Voltage between source and source The transistor T r 1 3 remains in an on state, and the drain current Id continues to flow. Then the potential of the source terminal side of the transistor Tr13 (connection point N12: the other end side of the capacitor Cs) gradually rises to approach the transistor Tr13 The threshold voltage Vth is thus limited. Therefore, the potential of the data line Ld(j) also changes to converge to the threshold voltage Vth of the transistor Tr13. In addition, during the natural relaxation period Τιβ2, the current does not flow to the organic electroluminescent element. OEL, and will not perform the illuminating action. -78- 201113851 Then ' during the data line voltage detection period τ,.;; during this natural mitigation period Τ1 <)2, at a time point when the predetermined relaxation time t has elapsed, as shown in Figs. 29 and 32, in a state where the pixel PIX is held in the selected state, based on the switching control signal S2 supplied from the controller 150b, The switch SW2 of the data driver 140 performs an on operation. At this time, the switches Swi and SW3 perform the cutting operation ', the switch SW4 is set to be connected to the contact Nb, and the switch SW5 is set to be connected to the contact Nb. By means of the 'connected data line Ld(j) and the ADC43(j) of the DAC/ADC 144, the data line voltage Vd at the time point when the natural relaxation period Τ1β2 passes the predetermined relaxation time t is via the switch SW2 and the buffer 45(j). The data line detection voltage Vmeas(t), which is taken into the ADC43(j)» and then taken into the ADC43(j) by the analog signal voltage, is converted into the ADC43(j) according to the equation (14). The detection data nratas(t) composed of digital data is held by the data latch 41(j) via the switch SW5. Then, 'In the detection data transmission period T1 (m, as shown in FIG. 29 and FIG. 33, 'the pixel PIX is set to the non-selection state. ' From the selection driver 1 20, the selection line Ls is applied with a non-selection level (low level: The selection signal Ssel of Vgl). In this non-selected state, the switch SW5 of the input section of the data latch 41(j) of the data driver 140 is set according to the switching control signals S4, S5 supplied from the controller 150b. The switch SW4 disposed in the output section of the data latch 41(j) is set to be connected to the contact Nb. Further, the switch SW3 is turned on according to the switching control signal S3. The switches SW1 and SW2 are turned off according to the switching control signals S1 and S.2. -79- 201113851 Because the SW5 series demon LP, the data is stored in the pressure detection t (=tO, in the difference can be only The different measurement actions are different from each other. The detection of the needles is corrected by the correction of each Vth. The data latches of the adjacent rows are latched 4 1 (j) via the switches S W4 , L' Connected via switch SW 3 to external controller 1 50 b. The data latches 41 U+l) of each row of the data latch pulse signal supplied from the controller 1 5 〇b (see FIG. 3) are detected (1) sequentially transferred to the adjacent data latch 41 (j) And 'output 1 column of pixel PIX detection data nm 〃 s (t) as material ' as shown in Figure 34, and in a manner corresponding to each pixel 设置 in the controller 1 5 Ob memory 1 In the above-described series of operations, the data line electric operation and the detection data transmission operation are set to different mitigation times tl 't2, t3)' to perform a plurality of times for each pixel ριχ. . Here, the operation of detecting the data line voltage at the relaxation time t is as described above, and the data line is applied at the timing t (duration time t = 10, 11, 12, 13) while the detection voltage is applied once and the natural relaxation is continued. The voltage detection and detection data transmission operation is performed a plurality of times, and the mitigation time can be performed multiple times in a series of actions of voltage application detection, natural mitigation, data line voltage detection, and material delivery. Repeating the above parameters for the pixels of each column to obtain the moving pixels arranged in the display panel 1 1 0 of the full pixel ρ IX to multiplicate the material nmeas (t) 53 recall the memory of the controller 1 5 0 b Body 1 5 ^. According to the detection data n„tas(t) of each pixel PIX, the threshold data of the transistor (driving transistor) Tr3 for the pixel PIX is executed, and the correction data for correcting the current amplification rate is performed. -80- 201113851 • Specifically, 'As shown in Figure 34, first, it is set in the controller 150b 2 # IE stomach insult function circuit 丨 5 6, read and memory 1 5 5 memory Each of the pixels ΡΙΧ corresponds to the detection data nin 〃 s(t). The 彳 ' 在 IE data acquisition function circuit 156, according to the above-mentioned use of the automatic zeroing method of the characteristic parameters to obtain the action, according to the formula (15) ~ (21) Formula 'calculates the correction data nlh (specifically, the correction data n, h the detection data 11m... (to) and the bias voltage (_ V〇ffset = _ 1 / 芒 xto) and the correction data call The calculated correction data n, h, and Δ are not stored in the predetermined memory area of the memory 155 in a manner corresponding to each pixel PIX. Then, using the correction data nu and the parameter K, the pixels for correcting each pixel are obtained. Correction data of the deviation of the luminous current efficiency of PIX △ V ° Fig. 35 shows the present A timing chart (2) of the characteristic parameter obtaining operation of the display device of the embodiment. Fig. 3 is a functional block diagram showing the operation of generating the luminance measurement video data of the display device of the embodiment. Fig. 38 is a view showing the operation of the light-emitting operation for luminance measurement of the display device of the present embodiment. Fig. 39 is a view showing the operation of the light-emitting operation for luminance measurement of the display device of the present embodiment. The function block diagram (2) of the data calculation operation is corrected. Here, in the 37th and 38th drawings, as the configuration of the data driver 140, the illustration of the shift register circuit 141 is omitted for convenience of illustration. 81 - 201113851 The characteristic parameter (correction data Δ π ) acquisition operation of the present embodiment is set as shown in Fig. 35, and is set to include luminance measurement for generating luminance measurement video data for each pixel ρι of each column. Image data writing period Τ2 <η, the light-emitting luminance period Τ2β2 for measuring the luminance of each pixel 因 in accordance with the luminance gray scale of the image data for luminance measurement, and the luminance luminance measurement period Τ2 for measuring the luminance of each pixel (Π. Here, the luminance The measurement illuminating period Τ2. 2 includes the illuminance luminance measurement period Τ2 <η, the measurement operation of the light emission luminance is performed in the luminance measurement light-emitting period T2D2. In the luminance measurement video data writing period T2 (n, the operation of generating the luminance measurement video data and the luminance measurement video data are performed in each pixel 。. The operation of generating the luminance measurement video data is performed in the controller 15 0 b, using the correction data obtained by the above-mentioned characteristic parameter acquisition operation △ 10,000 and n, n, and the parameter 预先 calculated in advance based on various design data of the display panel 11 〇 or each pixel ρι Κ, for a predetermined brightness measurement digital position The data nd is subjected to data conversion and correction, and the luminance measurement video data nd_brt is generated. Specifically, as shown in FIG. 36, first, by referring to the reference table 151 in the voltage amplitude setting function circuit 15 2b of the controller 150b, On the other hand, the digital data nd for luminance measurement input from the outside is subjected to the data conversion processing as shown in the above formula (23), and the converted data nd is generated.", » Next, the correspondence of the memory of the recorded body is read. The correction data Δ/3 of each pixel is further set by the K parameter setting circuit 158. Here, the parameter K is set, for example, to K = 11. -82 - 201113851 After 'function in the multiplication circuit 153b, the amplitude setting function circuit 152b outputs the voltage from the digital data (converted data) n <Uui performs the multiplication processing of the correction data call and the parameter K (ΚχηοουχΛ /3) » Next, the read data of the specified correction data nlh memorized by the read memory 1 5 5 nmias (t〇 and bias voltage (a v 〇ffset=−1/f xu), and multiplication processing (Kx nm"s(t〇), KxVoffset) of the parameter K is performed in the multiplication function circuits 157a and 157b. Next, in the addition function circuit 15 4b, the pair is derived from Digital data of multiplication function circuit 1531? (1〇 <11(!.^/\/5), the addition processing of the parameter nmeas(U) and the bias voltage (―Voffset) multiplied by the parameter Κχ(η(η <1 <) 11, χΛ cold + nih)). By performing the above correction processing, image data for luminance measurement is generated and supplied to the data driver 140. Further, the operation of writing the image data for the luminance measurement to each of the pixels PIX is the same as the detection voltage application operation (the state in which the pixel PIX to be written is set to the selected state in the same manner as the detection voltage application period T1...). The data line Ld(j) is written in the luminance measurement gray scale voltage VbM for the luminance measurement video data nd_brl. Specifically, as shown in FIG. 35 and FIG. 37, first, the connection of the pixel PIX is selected. The line Ls, the selection signal Ssel of the selected level (high level: Vgh) is applied, and the power supply voltage Vsa of the low level (non-light-emitting level: DVSS = ground potential GND) is applied to the power line La. -83- 201113851 The state 'the switch s W 1 is turned on, and the switches SW4 and SW5 are set to be connected to the contact Nb, whereby the brightness measurement image data nd_b supplied from the controller 150b is sequentially taken in data. The circuit 142' is held by the data latch 4i(j) corresponding to each row. The held image data is analog-converted by the DAC 42(j) and applied to the data line Ld(j) of each row as a gray for luminance measurement. Order voltage Vb M. Here, the gray scale voltage Vh for luminance measurement is set to a voltage 满足 satisfying the condition of the equation (2 8) as described above. Thus, in the light-emitting drive circuit DC constituting the pixel PIX, the power is applied. The gate terminal of the crystal Tr13 and the one end side of the capacitor Cs (connection point Nil) apply a low level power supply voltage Vsa (= GND), and further, the source terminal of the transistor Tr13 and the other end side of the capacitor Cs (connection point) N1 2) The gray scale voltage Vbrt for the luminance measurement is applied. Therefore, the drain current Id of the potential difference (gate and source voltage Vgs) generated between the gate and the source terminal of the transistor Tr 1 3 flows, Further, both ends of the capacitor Cs are charged with a light-emitting voltage (β V brt ) corresponding to the potential difference of the drain current Id. At this time, since the anode (connection point N12) of the organic electroluminescent element OEL is applied to the cathode ( Since the common electrode Ec) has a lower voltage, the organic electroluminescent element OEL does not flow a current, and does not perform a light-emitting operation. Next, in the luminance measurement light-emitting period T2〇2, as shown in FIG. The pixel of the column is set to non-selected The state of the state causes each pixel to simultaneously emit light. -84- 201113851 _ In particular, as shown in Fig. 38, a non-selection bit is applied to the selection line Ls connected to the all-pixel PIX arranged on the display panel no The selection signal Ssel of the quasi (low level: Vgl) is applied to the power supply line La at the same time as the power supply voltage Vsa of the high level (light emission level: ELVDD > GND). Thus, the transistor Tr of the light-emitting drive circuit DC of each pixel PIX is provided. 11. Tr 12 performs a turn-off operation while maintaining the illuminating voltage of the capacitor Cs connected to the gate 'source' of the transistor Tr 13 . Therefore, the gate voltage and the inter-source voltage Vgs of the transistor Tr 1 3 are held by the light-emission voltage (==Vbrt) charged to the capacitor Cs, and the transistor Tr 1 3 is turned on to flow the drain current Id, and the transistor Tr1 The potential of the source terminal (connection point N12) rises. Then, the potential of the source terminal of the transistor Tr13 (connection point N12) rises to be higher than the voltage ELVSS (= GND) applied to the cathode (common electrode Ec) of the organic electroluminescent element OEL, and is organically induced. The light emitting element OEL applies a forward bias. Therefore, the light-emission drive current Iel flows from the power supply line La through the transistor Tr13, the connection point N12, and the organic electroluminescent element OEL in the direction of the common electrode Ec, and the organic electroluminescent element 0EL performs the light-emission operation. The light-emission drive current Ie 1 is based on the light-emitting voltage (eVbrt) of the capacitor Cs that is written in the pixel PIX and held between the gate and the source of the transistor Tr 13 in the address operation of the luminance measurement image data. Since the voltage is defined by the enthalpy, the organic electroluminescent element OEL emits light in response to the luminance gray scale of the image data for luminance measurement. -85-201113851 Here, the luminance measurement video data nd_bM performs voltage amplitude based on the correction data Δ/?, nlh, and the parameter K acquired or generated corresponding to each pixel in the characteristic parameter obtaining operation described above. The setting, the current amplification factor/3 deviation correction, the drive transistor threshold, the voltage vth variation correction, and the variation of the illuminating voltage Vei caused by the parasitic capacitance in the pixel PIX. Therefore, by applying the luminance measurement image data nd_b" of the same luminance gray scale 写入 to each pixel Ρίχ', the light from the light-emitting drive circuit DC of each pixel ρι flows to the light-emission drive current iei of the organic electroluminescence element 〇el値 is not set to be substantially constant by the variation of the current amplification factor 或 or the variation of the driving transistor threshold voltage Vth or the parasitic capacitance in the pixel pIX. Then 'in the luminance measurement period T2CW The set light-emitting luminance measurement period T2. 3 ' performs a measurement operation of the light-emitting luminance of each pixel ριχ and a correction operation for correcting the correction data Δβ of the light-emitting current efficiency of each pixel 。. As shown in FIGS. 3 and 3, in each of the pixels 显示 of the display panel 110, the light-emission drive current Iel set to have substantially the same current 流通 flows through the organic electroluminescent element 〇EL, and the light-emitting operation is performed. In the state, the luminance Lv of each pixel PIX is measured as a digital position using a luminance meter or a CCD camera 160 provided on the emission surface side of the display panel 丨丨〇. The material transmits the measured light-emission luminance Lv to the correction data acquisition function circuit 1 5 6 of the controller 15〇b. -86- 201113851. The calculation operation of the correction data Δ〃 is first performed on the correction data set in the controller 150b. The acquisition function circuit 156 calculates the correction data Δ10000". The calculated Δ point is stored in a predetermined memory area of the memory 155 in a manner corresponding to each pixel PIX, similarly to the above-described detection data (1) or correction data. (Display Operation) Next, the display operation (light-emitting operation) of the display device of the present embodiment will be described. In the light-emitting operation of the display device, the correction data nih and the parameter Κ are used to correct the image data, so that each pixel ρι 进行 emits light at a desired gray level. Fig. 40 is a timing chart showing the light-emitting operation of the display device of the embodiment. Fig. 41 is a functional block diagram showing the correction operation of the image data of the display device of the embodiment. Fig. 42 is a view showing the operation of the operation of writing the corrected image data of the display device of the embodiment. Fig. 43 is a view showing the operation of the light-emitting operation of the display device of the embodiment. Here, in the 42nd and 43rd drawings, as the structure of the data driver 140, the map of the shift register circuit 141 is omitted for convenience of illustration. -87 - 201113851 In the display operation of the present embodiment, as shown in Fig. 40, the image data writing period T 3 (H, and cause) is set to include the desired image data generated by the pixels PIX of each column. The pixel illumination period T3〇2 of the luminance gray scale of the image data for each pixel PIX to emit light is performed. During the image data writing period Τ3, the operation of correcting the image data is performed, and the correction of the image data is performed for each pixel. The operation of correcting the image data is performed in the controller 150b, 'for the predetermined image data na composed of the digital data, the correction data Δ /5, Δ 7 、, nlh obtained by the above-mentioned characteristic parameter acquisition operation are used. Data conversion and correction are performed in advance based on the parameter K calculated from various design data of the display panel 110, and the image data (corrected image data) nd_umP subjected to the correction processing is supplied to the data driver 140. Specifically, as shown in Fig. 41 In the voltage amplitude setting function circuit 15 2b, the image resource including the RGB color gamma of each of the RGB colors is supplied to the outside of the controller 150b. (Second video data) iu, by referring to the reference table 151, the data conversion processing shown in the above equation (27) is performed so as to correspond to the RGB color components, and the conversion data nd()U1 is generated. The correction data corresponding to each pixel stored in the memory 155 is read. The K parameter setting circuit 158 sets the parameter K of the parameter K. Here, the parameter K is set, for example, to K = 1.1. Then, in the multiplication function circuit 1 5 3b The digital data (conversion data) no output from the voltage amplitude setting function circuit 152b is read, and the read correction data Δ/3 and the multiplication processing of the parameter K (Κχη^, χΔ泠) are performed. - 201113851 'Next' reads the detection data nm...(t.) and the bias voltage (“Voffset= — 1/(^ xt〇))) of the specified correction data nth stored in the memory 15 5 , and in the multiplication function circuit 157a and 157b perform multiplication processing of the parameter K (κχ nmeas(t〇), KxVoffset). Next, in the addition function circuit 154b, the digital data (Kxnd()U1) from the multiplication function circuit 15 3b is called, Performing the test data nmeas(t〇) multiplied by the parameter κ and The addition processing of the bias voltage (a Voffset) (κχ(ηι)...X Δ /? + n i h)) 修正 By performing the above-described series of correction processing, the corrected image data is generated and supplied to the data driver 14〇. Further, the writing operation of the corrected image data for each pixel PIX is performed in a state in which the pixel PIX to be written is set to the selected state, and is written in the data line Ld(j) in response to the corrected image data ndt() nip. Gray scale voltage Vdata. Specifically, as shown in FIG. 40 and FIG. 42, first, a selection signal Ssel' of a selected level (high level: Vgh) is applied to the selection line Ls to which the pixel PIX is connected, and a low level is applied to the power supply line La. The power supply voltage vsa (non-lighting level: DVSS = ground potential GND). In this case, the state 'the switch SWi is turned on, and the switches SW4 and SW5 are set to be connected to the contact Nb, whereby the corrected image data nd supplied from the controller 15〇b is sequentially taken into the data. The memory circuit 142' is held by the data latch 41(j) corresponding to each row. -89- 201113851 Image data kept ^〃. ^ Analog conversion is performed by the DAC 42(j), and the data line Ld(j) applied to each row is used as the gray scale voltage (third voltage) V d a t a. Here, the gray scale voltage Vdau is defined as the following equation (29) according to the definition ' shown by the above formula (14). ^data = - AV(nd_comp - 1)) (29) Therefore, at the light-emitting drive circuit DC constituting the pixel PIX, a low level is applied to the gate terminal of the transistor Tr13 and the one end side (connection point Nil) of the capacitor Cs. Supply voltage Vsa ( = GND). Further, the source terminal of the transistor Tr13 and the other end side of the capacitor Cs (connection point N1 2) are applied corresponding to the corrected image data. . The gray scale voltage of ^ is V d a t a. Therefore, the drain current Id flowing in accordance with the potential difference (gate and source-to-source voltage Vgs) generated between the gate and the source terminal of the transistor Tr 1 3 flows in accordance with the potential difference according to the gate current Id. The illuminating voltage (=Vdata) charges both ends of the capacitor Cs. At this time, since a lower voltage is applied to the anode (connection point N 12) of the organic electroluminescence element OEL than the cathode (common electrode Ec), the current does not flow to the organic electroluminescence element OEL, and the light emission operation is not performed. . Then, in the pixel light-emitting period T3t) 2, as shown in Fig. 40, in a state where the pixels PIX of the respective columns are set to the non-selected state, the respective pixels PIX are simultaneously illuminated. -90- 201113851 - Specifically, as shown in FIG. 4, a selection signal Ssel of a non-selected level (low level: Vgl) is applied to the selection line Ls connected to the full pixel 显示 of the display panel 丨丨〇 'At the same time, a power supply voltage Vsa of a high level (light emission level: ELVDD > GND) is applied to the power supply line La. Therefore, the transistors Tr11 and Tr12 of the light-emitting drive circuit DC provided in each of the pixels PIX perform the OFF operation, and maintain the voltage charged to the capacitor Cs connected between the gate and the source of the transistor Tr 13 (= Vdata: gate Pole and source voltage Vgs). Therefore, the transistor T r 1 3 is turned on, the drain current I d flows, and the potential of the source terminal (connection point N 1 2) of the transistor Tr 1 3 rises to be applied to the organic electroluminescent element OEL. When the voltage ELVSS (= GND) of the cathode (common electrode Ec) is higher, the light-emission drive current Iel flows from the light-emitting drive circuit DC to the organic electroluminescent element OEL. Since the light-emission drive current Iel is defined based on the voltage 値 of the voltage (=Vdata) held between the gate and the source of the transistor Tr 13 in the write operation of the corrected image data, the organic electroluminescence element The 〇EL emits light in response to the luminance gray scale of the luminance measurement image data Ildwnp. Further, in the above-described embodiment, as shown in Figs. 35 and 40, in the operation for performing the correction data Δβ and the display operation, the luminance measurement is performed on the pixel of the specific column (for example, the first 歹U). After the writing operation of the image data or the corrected image data is completed, the pixel 该 of the column is set to the hold state until the writing operation of the image data of the pixel of the other column (the second column or later) is completed. . -91- 201113851 Here, in the hold state, the selection signal Ssel' of the non-selected level is applied to the selection line Ls of the column to set the pixel PIX to the non-selected state, and the power supply line La is applied to the non-light-emitting level. The power supply voltage Vsa is set to a non-light emitting state. This hold state is as shown in Fig. 40, Fig. 40, and the time is set differently for each column. In addition, after the writing operation of the luminance measurement image data or the corrected image data of the pixels pIX of each column is completed, the driving control for causing the pixel PIX to emit the light is performed immediately, and the holding state may not be set. In this manner, the display device (the light-emitting device including the pixel driving device) and the driving control method of the light-emitting device of the present embodiment have the unique automatic zero-return method applied to the present invention, and are in different timings (mitigation). Time) The method of taking in the data line voltage and converting it into a series of characteristic parameters composed of digital data to obtain a plurality of actions. Therefore, according to the present embodiment, it is possible to obtain a parameter for correcting the variation of the threshold voltage of the driving transistor of each pixel and the variation of the current amplification factor of each pixel. Further, in the present embodiment, in the design stage of the display panel or each pixel, the illuminance caused by the parasitic capacitance added to the driving transistor provided in each pixel is calculated in advance based on the parasitic capacitance added to the driving transistor. The parameter K of the fluctuation of the voltage is appropriately set in accordance with the operation state of the display device. Therefore, according to the present embodiment, it is possible to apply a variation of the threshold voltage of each pixel to the image data written by each pixel, and the current amplification - 92 - 201113851 • the deviation of the rate and the parasitic capacitance of each pixel Correction processing of the fluctuation of the illuminating voltage caused. Further, in the present embodiment, the correction data based on the correction of the variation between the threshold voltage and the current amplification factor between the pixels and the variation of the emission voltage of each pixel are set to be uniform. A method in which the light-emitting driving current flows to each pixel and the luminance of each pixel is measured. Therefore, according to the present embodiment, it is possible to obtain a parameter for correcting the variation in the luminous current efficiency between the pixels. Therefore, according to the present embodiment, when the image data is written, the image data written in each pixel can be applied to compensate for the variation of the threshold voltage of each pixel, and the current amplification ratio and the light emission between the pixels. The variation in current efficiency and the correction processing of the fluctuation of the light-emitting voltage of each pixel. Therefore, according to the present embodiment, regardless of the characteristic change of each pixel or the state of the variation of the characteristics, the light-emitting element (organic electroluminescence element) can be made to emit light in accordance with the original luminance gray scale of the image data. Active organic electroluminescence driving system with good luminescent properties and uniform image quality. Further, in the present embodiment, it is possible to perform a process of calculating a correction data for correcting a variation of a current amplification factor including an emission current efficiency in a sequence of one of the controllers 150b having a single correction data acquisition function circuit 156, and The processing for compensating the correction data for compensating for the variation of the threshold voltage of the driving transistor is calculated. Therefore, according to the present embodiment, it is not necessary to provide an individual configuration (function circuit) in accordance with the content of the calculation processing of the correction data, and the reference table '-93-201113851 can be based on the conversion table corresponding to each color (7). Since the correction processing for compensating for the fluctuation of the light-emission voltage of each pixel is applied to the table, the configuration of the display device (light-emitting device) can be simplified. (Third Embodiment) Next, a third embodiment in which the display devices according to the first and second embodiments described above are applied to an electronic device will be described with reference to the drawings. As described in the first and second embodiments, the display device 100 including the display panel 110 having the light-emitting elements including the organic electroluminescence element OEL in each pixel PIX can be applied to a digital camera or a mobile personal person. Various electronic devices such as computers and mobile phones. Fig. 44A and Fig. 44B are perspective views showing a configuration example of a digital camera to which the display device (light emitting device) of the first embodiment is applied. Fig. 45 is a perspective view showing a configuration example of a mobile personal computer to which the display device (light-emitting device) of the first embodiment is applied. Figure 46 is a perspective view showing a configuration example of a mobile phone to which the display device (light-emitting device) of the first embodiment is applied. In the 44A and 44B, the digital camera 200 includes a main body 201, a lens unit 202, an operation unit 203, a display unit 204 including a display device 100 including the display panel 110 of the present embodiment, and a shutter button 205. In this case, in the display unit 204, the light-emitting elements of the respective pixels of the display panel 110 perform light-emission operation in accordance with an appropriate luminance gray scale corresponding to the image data, thereby achieving a good and uniform image quality. Further, in Fig. 45, the personal computer 210 includes a main body unit 21 1 , a keyboard 212 , and a display unit 213 including a display device 100 including the display panel 11 of the present embodiment. In this case, in the display unit 213, the light-emitting elements of the respective pixels of the display panel 110 perform light-emission operation in accordance with an appropriate luminance gray scale corresponding to the image data, thereby achieving a good and uniform image quality. Further, in Fig. 46, the mobile phone 220 includes an operation unit 221, a listening port 222, a mouthpiece 223, and a display unit 224 including a display device 100 including the display panel 110 of the present embodiment. In this case as well, in the display unit 224, the light-emitting elements of the respective pixels of the display panel 110 are illuminated in an appropriate brightness gray scale corresponding to the image data, thereby achieving a good and uniform image quality. In the embodiment, the present invention is applied to a display device (light-emitting device) 100 including a display panel 110 having a light-emitting element composed of an organic electroluminescence device OEL in each pixel PIX, but The invention is not limited to this. The present invention is also applicable to, for example, a light-emitting element array including a plurality of pixels having a light-emitting element composed of an organic electroluminescence element OEL arranged in one direction, and irradiating light emitted from the light-emitting element array in response to image data to the photoreceptor. Drum-exposed exposure device. In this case, the light-emitting elements of the respective pixels of the light-emitting element array can be made to emit light in response to appropriate brightness of the image data, and a good exposure state can be obtained. Other advantages and modifications will readily occur to those skilled in the art, and therefore, the scope of the present invention is not limited to the specific details shown and described herein and the representative embodiment of the present invention. Therefore, various modifications may be made without departing from the spirit and scope of the general inventive concept as defined by the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic block diagram showing an example of a display device to which a light-emitting device of the present invention is applied. Fig. 2 is a schematic block diagram showing an example of a data driver applied to the display device of the first embodiment. Fig. 3 is a schematic circuit configuration diagram showing an example of a configuration of a main part of a data driver applied to the display device of the first embodiment. Fig. 4 is a view showing an output input characteristic of a digital-analog conversion circuit and an analog-to-digital conversion circuit applied to the data driver of the first embodiment. Fig. 5 is a functional block diagram showing the function of the controller applied to the display device of the first embodiment. Fig. 6 is a circuit configuration diagram showing an embodiment of a pixel applied to the display panel of the first embodiment. Fig. 7 is a view showing an operational state when a pixel of the light-emitting drive circuit of the first embodiment is applied to image data. Fig. 8 is a view showing a voltage-current characteristic when the pixel of the light-emitting drive circuit of the first embodiment is applied in the address operation. Fig. 9 is a diagram showing changes in the data line voltage of the technique (automatic zeroing method) applied to the characteristic parameter obtaining operation of the first embodiment. Fig. 10 is a timing chart (1) showing the operation of obtaining the characteristic parameters of the display device of the first embodiment. -96-201113851' Fig. 1 is a view showing the operation of the detection voltage application operation of the display device of the first embodiment. Fig. 12 is a view showing the operation of the natural mitigation operation of the display device of the first embodiment. Fig. 13 is a view showing the operation of the data line voltage detecting operation of the display device of the first embodiment. Fig. 14 is a view showing the operation of the detection data output operation of the display device of the first embodiment. Fig. 15 is a functional block diagram showing a correction data calculation operation of the display device of the first embodiment. Fig. 16 is a timing chart (2) showing the operation of obtaining the characteristic parameters of the display device of the first embodiment. Fig. 17 is a functional block diagram showing the operation of generating luminance image data for the display device of the first embodiment. Fig. 18 is a view showing the operation of the writing operation of the image data for luminance measurement of the display device of the first embodiment. Fig. 19 is a view showing the operation of the light-emitting operation for luminance measurement of the display device of the first embodiment. Fig. 20 is a block diagram showing the function of the correction data calculation operation of the first embodiment (Part 2). Fig. 21 is a timing chart showing the light-emitting operation of the display device of the first embodiment. Fig. 22 is a functional block diagram showing the operation of correcting the image data of the display device of the first embodiment. -97-201113851 Fig. 23 is a view showing the operation of the image data reading operation after the correction of the display device of the first embodiment. Fig. 24 is a view showing the operation of the light-emitting operation of the display device of the first embodiment. Fig. 25 is a functional block diagram showing the function of the controller applied to the display device of the second embodiment. Fig. 26 is a view showing an operation state of the organic electroluminescence device to which the pixel of the light-emitting drive circuit of the second embodiment is applied, when light is emitted. Fig. 27 is a characteristic diagram showing the relationship between the light-emitting voltage of the electroluminescent device and the light-emission drive current during the light-emitting operation of the pixel of the second embodiment. Fig. 28 is a view for explaining the data conversion processing of the reference table applied to the controller of the second embodiment. Fig. 29 is a timing chart (1) showing the operation of obtaining the characteristic parameters of the display device of the second embodiment. Fig. 30 is a view showing the operation of the detection voltage applying operation of the display device of the second embodiment. Fig. 3 is a view showing the operation of the natural mitigation operation of the display device of the second embodiment. Fig. 32 is a view showing the operation of the data line voltage detecting operation of the display device of the second embodiment. Fig. 3 is a view showing the operation of the detection data output operation of the display device of the second embodiment. • 98-201113851 • Fig. 34 is a functional block diagram (1) showing the correction data calculation operation of the display device of the second embodiment. Fig. 35 is a timing chart (2) showing the operation of obtaining the characteristic parameters of the display device of the second embodiment. Fig. 3 is a functional block diagram showing the operation of generating image data for luminance measurement of the display device of the second embodiment. Fig. 3 is a view showing the operation of the writing operation of the image data for luminance measurement of the display device of the second embodiment. Fig. 3 is a view showing the operation of the light-emitting operation for luminance measurement of the display device of the second embodiment. Fig. 39 is a functional block diagram (part 2) showing the correction data calculation operation of the second embodiment. Fig. 40 is a timing chart showing the light-emitting operation of the display device of the second embodiment. Fig. 41 is a functional block diagram showing the operation of correcting the image data of the display device of the second embodiment. Fig. 42 is a view showing the operation of the operation of writing the corrected image data of the display device of the second embodiment. Fig. 43 is a view showing the operation of the light-emitting operation of the display device of the second embodiment. Fig. 44A and Fig. 44B are perspective views showing the configuration of a digital camera of the third embodiment. Fig. 45 is a perspective view showing the configuration of a mobile personal computer according to the third embodiment. -99- 201113851 Composition. Figure 46 shows the hand of the third embodiment [Description of component symbols] 100 Display device 110 Display panel 120 Selection driver 130 Power driver 140 Data driver 140A, 140B Internal circuit 141 Shift register circuit 142 Data register circuit 143 Data Latch Circuit 144 DAC/ADC Circuit 145 Output Circuit 146 Logic Power Supply 147 Analog Power Supply 150, 150a, 1 50 0b Controller 151 Reference Table (LUT) 152a Voltage Amplitude Setting Function Electricity 153a Multiplication Function Circuit (Image 1 154a Addition Function Circuit (Image | 155 Words of Remembrance (Jiyi Circuit) 156 Correction Data Acquisition Function 1 Circuit) Road: Material Correction Circuit): Material Correction Circuit): Road (Feature Parameter Acquisition -100- 201113851 41(j) 42(j) 43(j) 44(j) ' 45(j) Ld La Ls SW1' SW2 ' SW3 SW4, SW5

SI, S2 'S3, S4 ' S5 PIX data latch DAC (digital to analog conversion circuit) ADC (analog-to-digital conversion circuit) buffer data line power line select line, switch switching control signal pixel -101 -

Claims (1)

201113851 • VII. Patent application scope: 1. A pixel driving device 'which drives a pixel, and the pixel has a light emitting element; and a light emitting driving circuit, which is a driving control element having a current path connected to the light emitting element; the pixel driving device is provided a characteristic parameter obtaining circuit that obtains an electrical characteristic parameter for compensating for a variation in electrical characteristics of the light emitting driving circuit, and an emission characteristic parameter for compensating for a variation in characteristics of the light emitting element; the characteristic parameter obtaining circuit is connected Applying a voltage for detection to the data line of the pixel, and applying a voltage 超过 exceeding a threshold voltage of the threshold voltage of the driving control element between the control terminal of the driving control element and one end of the current path, after at least one easing Obtaining the detection voltage of the data line after the time, and obtaining the electrical characteristic parameter according to the voltage 値 of the detection voltage; the characteristic parameter obtaining circuit obtains the illuminating characteristic parameter according to the illuminating brightness of the illuminating element of the pixel, and the illuminating characteristic parameter is obtained. The light-emitting element of the pixel is based on the electrical characteristic parameter The measurements of brightness correction operation with light emission image data. 2. The pixel driving device of claim 1, wherein the characteristic parameter obtaining circuit obtains a first characteristic parameter corresponding to a function of a threshold voltage of the driving control element of the light emitting driving circuit, and the light emitting The second characteristic parameter corresponding to the deviation of the current value of the drive circuit with respect to the set 値 is used as the electrical characteristic parameter. -102-201113851 3. The pixel driving device of claim 2, further comprising: a voltage applying circuit for generating a gray scale voltage corresponding to the supplied image data and outputting; and connecting the switching circuit The voltage application circuit and the data line are connected or disconnected; the characteristic parameter acquisition circuit connects the voltage application circuit and the data line by using the connection switching circuit, and after outputting a predetermined gray scale voltage from the voltage application circuit as the detection voltage And the connection switching circuit intercepts the connection between the data line and the voltage application circuit, and after setting the data line to a high impedance state, obtaining the data line at a time point when the plurality of different mitigation times have passed A plurality of voltages are used as the detection voltage. 4 _ The pixel driving device of claim 3, further comprising an image data correction circuit for correcting the supplied image data; the image data correction circuit is supplied with the brightness measurement image data as the image data And performing the correction processing for multiplying the second characteristic parameter and adding the first characteristic parameter to the luminance measurement video data, and the voltage application circuit supplies the luminance measurement to which the correction processing has been performed. And generating, by the image data, a grayscale voltage for luminance measurement corresponding to the luminance measurement video data; and obtaining, by the characteristic parameter acquisition circuit, the luminance by which the grayscale voltage for luminance measurement is applied to the data line Light emission of the element -103-201113851 The brightness of the light is obtained based on the deviation of the light-emitting luminance 値 with respect to the setting 値 of the light-emitting luminance ′ as a third characteristic parameter relating to the luminous current efficiency of the light-emitting element. parameter. 5. The pixel driving device of claim 4, wherein the acquisition of the second characteristic parameter and the acquisition of the third characteristic parameter in the characteristic parameter obtaining circuit are performed by the same arithmetic processing circuit. 6. The pixel driving device of claim 4, wherein the characteristic parameter obtaining circuit obtains a fourth characteristic parameter that relates the second characteristic parameter to the third characteristic parameter. [7] The pixel driving device of claim 6, wherein the characteristic parameter obtaining circuit acquires the first to fourth characteristic parameters so as to correspond to respective pixels of the plurality of pixels; further comprising a memory circuit corresponding to The first to fourth characteristic parameters are recorded in the manner of each pixel of the plurality of pixels. 8. The pixel driving device of claim 2, wherein the light-emitting driving circuit of the pixel has a capacitive element disposed between a control terminal of the driving control element and one end of the current path; A setting circuit that sets an inherent parameter to the pixel based on a capacitance 附加 added to the driving control element to remove a parasitic capacitance other than the capacitive element. 9. The pixel driving device of claim 8 which further has an image data correction circuit for correcting the supplied image data; -104- 201113851 The image data correction circuit is supplied with the brightness measurement image data As the image data, the brightness measurement video data is subjected to correction processing based on the first characteristic parameter, the second characteristic parameter, and the unique parameter; the voltage application circuit supplies the brightness measurement that has been subjected to the correction process And generating and outputting a grayscale voltage for luminance measurement in accordance with the image data for the luminance measurement; the characteristic parameter acquisition circuit acquires the grayscale voltage for the luminance measurement to be applied to the data line to perform a light-emitting operation The acquisition 値' of the light-emitting luminance of the light-emitting element acquires a third characteristic parameter related to the light-emitting current efficiency of the light-emitting element as the light-emitting characteristic based on the deviation of the light-emitting luminance from the setting 値 of the light-emitting luminance parameter. 10. A light-emitting device comprising: a light-emitting panel having a plurality of data lines arranged along a first direction; at least one scanning line disposed along a second direction intersecting the first direction; and Each of the plurality of data lines and the scan line are connected to a plurality of pixels disposed adjacent to an intersection of the data lines and the scan line; and a driving circuit for driving the light emitting panel; each pixel has a light emitting element And an illumination driving circuit, which is a driving control element having one end of the current path connected to the light emitting element; the driving circuit includes: the scan driving circuit' applies a selection signal to the scan line, and -105-201113851 and the scan line The connected pixels are set to a selected state; and the characteristic parameter obtaining circuit obtains the electric power of the respective pixels set in the selected state by the scanning line driving circuit to compensate for variations in electrical characteristics of the light emitting driving circuit. a characteristic parameter and an illuminating characteristic parameter for compensating for a variation of a characteristic of the illuminating element; the characteristic parameter obtaining circuit pair A voltage for detection is applied to each of the data lines connected to the pixel, and a voltage exceeding a voltage 値 of the threshold voltage of the driving control element is applied between the control terminal of the driving control element of each pixel and one end of the current path. Obtaining the detection voltage of the data line after at least one relaxation time, and obtaining the electrical characteristic parameter according to the voltage 値 of the detection voltage; the characteristic parameter acquisition circuit is configured to obtain the illumination according to the luminance of the light-emitting element of each pixel. The characteristic parameter is that the light-emitting element of each pixel performs a light-emitting operation based on the image data for brightness measurement corrected based on the electrical characteristic parameter. 11. The light-emitting device according to claim 10, wherein the light-emitting drive circuit of each pixel includes: a first transistor; a first end of the current path connected to the light-emitting element; and the second of the current path a predetermined power supply voltage is applied to the terminal; the second transistor is connected to the scan line by the control terminal, and the first end of the current path is connected to the control terminal of the current path of the first transistor, and the second end of the current path is a second end of the current path of the first transistor is connected; and -106-201113851 a third transistor, wherein the control terminal is connected to the scan line, and the first end of the current path is connected to the data lines, the current path The second end is connected to the first end of the current path of the first transistor; the drive control element is the first transistor; and the second transistor and the third transistor are set to the selected state. In a conductive state, the second end of the current path of the first transistor system is connected to the control terminal via the second transistor, and a connection point between the first end of the current path of the first transistor and the light-emitting element passes through the a third transistor is connected to the data lines; the characteristic Coefficient obtaining acquisition circuit via the connection point after the relaxation time of the voltage via the third transistor and the respective data lines as the detection voltage. 12. The illuminating device of claim 1, wherein the characteristic parameter obtaining circuit obtains a first characteristic parameter corresponding to a threshold voltage of the driving control element of the illuminating driving circuit, and the illuminating driving circuit The second characteristic parameter corresponding to the deviation of the current 放大 is set as the electrical characteristic parameter. 1 . The illuminating device of claim 12, further comprising: a voltage applying circuit that generates a gray scale voltage corresponding to the supplied image data and outputs the same; and a connection switching circuit that applies the voltage applying circuit Connecting or truncating the data line; the characteristic parameter obtaining circuit is connected to the data line by the connection switching circuit, and the predetermined gray scale voltage is used as the detection voltage from the voltage application circuit output -107-201113851 After the connection switching circuit cuts off the connection between the data line and the voltage application circuit, and sets the data line to a high impedance state, the data line is obtained at a time point when the plurality of different mitigation times have elapsed. A plurality of voltages are used as the detection voltage. 14. The illuminating device of claim 13, further comprising an image data correction circuit for correcting the supplied image data; the image material correction circuit is supplied with the brightness measurement image data as the image And performing correction processing for multiplying the second characteristic parameter and adding the first characteristic parameter to the luminance measurement video data; the voltage application circuit is supplied with the luminance measurement that has been subjected to the correction processing And generating, by the image data, a gray scale voltage for luminance measurement corresponding to the luminance measurement video data; and obtaining, by the characteristic parameter acquisition circuit, the luminance by which the gray scale voltage for luminance measurement is applied to the data line The 发光 of the illuminance of the element is obtained based on the deviation of the illuminance of the illuminance from the 値 of the illuminance, and a third characteristic parameter relating to the illuminating current efficiency of the illuminating element is obtained as the illuminating characteristic parameter. 15. The light-emitting device of claim 14, wherein the characteristic parameter acquisition circuit acquires a fourth characteristic parameter associated with the second characteristic parameter and the third characteristic parameter. The light-emitting device of claim 12, wherein the light-emitting drive circuit in each pixel has a capacitive element disposed between a control terminal of the drive control element and one end of the current path; Further, there is an inherent parameter setting circuit that sets a unique parameter for each pixel based on a capacitance 去除 of the drive control element added to the respective pixels to remove a parasitic capacitance other than the capacitance element. 17. The illuminating device of claim 16, further comprising an image data correction circuit for correcting the supplied image data; the image data correction circuit is supplied with the brightness measurement image data as the image data, And performing correction processing on the luminance measurement video data based on the first characteristic parameter, the second characteristic parameter, and the unique parameter; the voltage application circuit is supplied with the luminance measurement image data that has been subjected to the correction processing The luminance measurement gray scale voltage is generated and output in response to the luminance measurement video data. The characteristic parameter acquisition circuit is supplied with the luminance component gray scale voltage applied to the data line to perform a light-emitting operation. This measurement 发光' of the illuminance is based on the deviation 値 of the measurement 値 with respect to the setting 値 of the illuminance, and the third characteristic parameter relating to the illuminating current efficiency of the illuminating element is obtained as the illuminating characteristic parameter. -109-201113851, a drive control method for a light-emitting device, the light-emitting device having a light-emitting panel, wherein the light-emitting panel has a plurality of data lines and a plurality of pixels connected to the data lines, the pixels having light-emitting elements And a light-emitting drive circuit' is a drive control element having one end of the current path connected to the light-emitting element; the drive control method of the light-emitting device has: a voltage application step of applying a detection voltage to each data line, and a control terminal of the drive control element of the pixel and an end of the current path 'applying a detection voltage exceeding a threshold voltage of the drive control element; and a voltage acquisition step of applying the detection voltage after at least one easing time Acquiring the voltages of the data lines as a plurality of detection voltages; and obtaining an electrical characteristic parameter according to the obtained voltage 値' of the plurality of detection voltages to obtain electrical characteristics of the illumination driving circuit for compensating the pixels a change in electrical characteristic parameter; a illuminating action step based on the electrical property Correcting the brightness measurement image data, and performing the light-emitting operation of the light-emitting elements of the respective pixels in response to the corrected image data for brightness measurement; and obtaining the pixels for performing the light-emitting operation by the light-emitting characteristic parameter obtaining step The illuminance characteristic of the illuminating element is obtained, and an illuminating characteristic parameter for compensating for the characteristic variation of the illuminating element is obtained based on the illuminance of the illuminating element. The driving control method of the illuminating device according to claim 18, wherein the electric characteristic parameter obtaining step includes: the first characteristic parameter obtaining step 'obtaining the driving control with the illuminating driving circuit The first characteristic parameter corresponding to the threshold voltage of the element is the electrical characteristic parameter; and the second characteristic parameter obtaining step is to obtain the second characteristic parameter corresponding to the deviation of the current amplification factor of the light-emitting drive circuit from the set value The illuminating characteristic parameter obtaining step includes a third characteristic parameter obtaining step of obtaining a third characteristic parameter related to the illuminating current efficiency of the illuminating element based on a deviation of the measured 値 with respect to the setting 値 of the illuminating luminance of the illuminating element This light emission characteristic parameter is used. 20. The driving control method of the illuminating device of claim 19, wherein the illuminating driving circuit of each of the pixels has a capacitive element disposed between a control terminal of the driving control element and one end of the current path; The light-emitting operation step includes a correction step of: the correction step sets a parameter specific to each pixel based on a capacitance of the drive control element added to the pixel to remove a parasitic capacitance other than the capacitance element, and according to the inherent parameter The parameter corrects the image data for the brightness measurement. -111-