JP2005049822A - Electrooptical device and method for driving same, and electronic apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrooptical device of high precision and high display grade, a method for driving the electrooptical device, and an electronic apparatus. <P>SOLUTION: A display panel 11 comprises four first to fourth display panel sections 11a to 11d. Pixel circuits including organic electroluminescence elements are formed in the positions where scanning lines and data lines intersect in the first to fourth display panel sections 11a to 11d. Also, each of the first to fourth display panel sections 11a to 11d is provided with respectively corresponding first to fourth data line driving circuits 12a to 12d and first to fourth scanning line driving circuits 13a to 13d. The light emission periods of the organic electroluminescence elements are changed by each of the first to fourth display panel sections 11a to 11d by the first to fourth scanning line driving circuits 13a to 13d, by which the luminance differences are apparently eliminated between the respective display panel sections 11a to 11d. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electro-optical device, a driving method thereof, and an electronic apparatus.

  As one of display devices using organic electroluminescence elements, there is an active matrix display device provided with a driving transistor for controlling the organic electroluminescence elements for each pixel circuit.

  This type of display device includes a data line driving circuit that outputs a data current corresponding to image data, which is digital data, to the pixel circuit via a data line. This data line driving circuit has a single line driver with a plurality of digital / analog conversion circuits inside, and the digital / analog conversion circuit converts the image data into a data current as an analog signal. After that, the data current is output to each pixel via the data line.

  In recent years, in order to realize a large display panel, it has become necessary to increase the number of display lines, that is, scanning lines, and to increase the number of data lines to increase the definition of the screen.

  Therefore, a method has been proposed in which the data lines are divided into a plurality of groups, a driving IC is provided for each of the divided groups, and each data line of the corresponding group is controlled by each driving IC ( For example, Patent Document 1).

In Patent Document 1, in consideration of manufacturing variations of each driving IC, the output current between the driving ICs is controlled based on the light emission driving current to obtain uniform light emission luminance.
JP 2001-42827 A

  However, the method for suppressing the variation between the driving ICs is not to control the reference current but to control the output current based on the light emission driving current. For display panels having different light emission driving currents for each pixel, There was a problem that it could not be applied.

  Further, as the display becomes larger, each data line becomes longer, and the increase in wiring resistance and wiring capacity becomes a serious problem due to the longer data line. That is, in the pixel circuit close to the driving IC, the data current can be written accurately and in a short time. However, in a pixel circuit far from the driving IC, it takes time to write the data current. In particular, when the luminance is low, that is, the data current has a small value, there is a problem that the data current cannot be accurately written as the distance from the driving IC increases.

  SUMMARY An advantage of some aspects of the invention is that it provides a high-definition and high-quality electro-optical device, a driving method thereof, and an electronic apparatus.

The electro-optical device of the present invention includes a plurality of scanning lines, a plurality of data lines, and a plurality of electro-optical elements arranged at positions corresponding to intersections of the plurality of scanning lines and the plurality of data lines. A display panel formed by an assembly of a plurality of display panel units including pixels, and a light emission gradation of each of the plurality of pixels provided in each of the plurality of display panel units and provided in the corresponding display panel unit A data line driving circuit that supplies a data signal corresponding to image data to the corresponding pixel via the plurality of data lines and each of the plurality of display panel units, and provided in the corresponding display panel unit A scanning line driving circuit that selects the plurality of scanning lines as appropriate and controls the corresponding display panel unit and the other display panel unit so that the light emission periods of the electro-optic elements are different from each other.

  According to this, since the light emission period of the electro-optic element can be adjusted for each display panel unit, display unevenness between the display panels can be suppressed, and the display quality can be improved with high definition. can do.

In this electro-optical device, each of the scanning line drive circuits provided in each of the plurality of display panel units sets a light emission period of the corresponding electro-optical element so that a light emission luminance difference for each display panel unit is eliminated. You may control.
According to this, since the luminance difference between the display panel units can be suppressed to be small, display unevenness between the display panel units can be prevented, and the display quality can be improved with high definition.

  In this electro-optical device, the light emission period of the electro-optical element controlled by each of the scanning line driving circuits includes the characteristics of the data line driving circuit corresponding to the pixel including the electro-optical element and the reference data line driving circuit. A certain coefficient may be obtained by comparing with the characteristics, and each may be determined based on the coefficient.

  According to this, even if there is a characteristic error between the data line driving circuits, the luminance difference between the display panel units can be suppressed to be small, so that display unevenness between the display panel units can be prevented. High definition and display quality can be improved.

  The electro-optical device may include a memory for storing the light emission period data, and each of the scanning line driving circuits may determine the light emission period based on the corresponding light emission period data stored in the memory.

  According to this, each scanning line driving circuit can determine the light emission period based on the data of the corresponding light emission period stored in the memory. In addition, since the light emission period data is stored in the memory, the light emission period data can be appropriately changed and stored.

  In the electro-optical device, the data line driving circuits provided in each of the plurality of display panel units correspond to each other on opposite sides of the display panel including the plurality of display panel units. A data signal may be supplied to the corresponding pixel via the plurality of data lines arranged on the side adjacent to the display panel unit and provided in the corresponding display panel unit.

  According to this, even if the display panel is enlarged in the direction in which the data line extends, the length of the data line can be shortened. Therefore, the data signal can be written accurately and in a short time.

In this electro-optical device, the plurality of data line driving circuits provided on the same side of the display panel may have the same level of reference current for generating the data signal.
According to this, it is possible to make the operations of the plurality of data line driving circuits provided on the same side uniform, and to suppress display unevenness.

In this electro-optical device, the reference currents of the plurality of data line driving circuits provided on one side of the display panel are different from the reference currents of the plurality of data line driving circuits provided on the other side of the display panel. May be.
According to this, it becomes possible to suppress the display unevenness for each display panel unit.

In this electro-optical device, the plurality of data line driving circuits provided on the same side of the display panel are configured such that a circuit including a reference current source is formed of a current mirror circuit, and the same level of reference current is supplied to each other. It may be.
According to this, the operations of the plurality of data line driving circuits on the one side and the other side can be made uniform, and display unevenness can be suppressed.

In the electro-optical device, the electro-optical element may be an organic electroluminescence element.
According to this, the display of the electro-optical device provided with the organic electroluminescence element can be made with high definition and high quality.

  The driving method of the electro-optical device according to the present invention includes: a plurality of scanning lines; a plurality of data lines; and an electro-optical element disposed at a position corresponding to an intersection of the plurality of scanning lines and the plurality of data lines. A display panel formed by an assembly of a plurality of display panel units including a plurality of pixels, and a light emission level of the plurality of pixels provided in each of the plurality of display panel units and provided in the corresponding display panel unit A data line driving circuit for supplying a data signal corresponding to image data representing a key to the corresponding pixel via the plurality of data lines, and the corresponding display panel A driving method of an electro-optical device including a scanning line driving circuit that appropriately selects the plurality of scanning lines provided in a unit, wherein the electro-optical element is used in the corresponding display panel unit and the other display panel unit. Departure Controls to different periods.

  According to this, since the light emission period of the electro-optic element can be adjusted for each display panel unit, display unevenness between the display panels can be suppressed, and the display quality can be improved with high definition. can do.

In the driving method of the electro-optical device, the light emission period of the corresponding electro-optical element may be controlled so as to eliminate the light emission luminance difference between the plurality of display panel units.
According to this, since the luminance difference between the display panel units can be suppressed to be small, display unevenness between the display panel units can be prevented, and the display quality can be improved with high definition.

  In the driving method of the electro-optical device, the light emission period of the electro-optical element is obtained by comparing the characteristics of the data line driving circuit corresponding to the pixel including the electro-optical element with the characteristics of the reference data line driving circuit. A constant coefficient may be obtained and determined based on the coefficient.

  According to this, even if there is a characteristic error between the data line driving circuits, the luminance difference between the display panel units can be suppressed to be small, so that display unevenness between the display panel units can be prevented. High definition and display quality can be improved.

  In the driving method of the electro-optical device, the data line driving circuit provided in each of the plurality of display panel units may be opposed to each other across the display panel including the plurality of display panel units. The data signals may be arranged on the side adjacent to the corresponding display panel unit, and a data signal may be supplied to the corresponding pixel via the plurality of data lines provided in the corresponding display panel unit.

According to this, even if the display panel is enlarged in the direction in which the data line extends, the length of the data line can be shortened. Therefore, the data signal can be written accurately and in a short time.

In this method of driving the electro-optical device, a plurality of data line driving circuits provided on the same side of the display panel may be supplied with a reference current of the same level in order to generate the data signal.
According to this, it is possible to make the operations of the plurality of data line driving circuits provided on the same side uniform, and to suppress display unevenness.

In the driving method of the electro-optical device, the reference current of the plurality of data line driving circuits provided on one side of the display panel and the reference of the plurality of data line driving circuits provided on the other side of the display panel. The current may be different.
According to this, it becomes possible to suppress the display unevenness for each display panel unit.

In the driving method of the electro-optical device, the data signal corresponding to the image data supplied to the corresponding pixel by the plurality of data line driving circuits via the data line may be a data voltage.
According to this, a data signal for image data is converted into a voltage signal in the data line driving circuit and output to the data line.

The electronic apparatus of the present invention includes the electro-optical device.
According to this, it is possible to obtain an electronic device with high definition and high display quality.

(First embodiment)
Next, a first embodiment embodying the present invention will be described with reference to FIGS.
FIG. 1 is a block diagram showing a circuit configuration of an organic electroluminescence display device. An organic electroluminescence display device 10 as an electro-optical device includes a display panel 11, first to fourth data line driving circuits 12a to 12d, first to fourth scanning line driving circuits 13a to 13d, and a control circuit 14. And a memory 15.

  The display panel 11 displays an image based on display data from the computer 20 as an external device. The display panel 11 is divided into four parts, top, bottom, left and right. The upper left side is the first display panel unit 11a, the upper right side is the second display panel unit 11b, the lower left side is the third display panel unit 11c, and the lower right side is the fourth display. It is set as the panel part 11d. In the present embodiment, the four first to fourth display panel portions 11a to 11d constituting the display panel 11 are formed by arranging pixel circuits to be described later in a matrix on different glass substrates, respectively. The fourth data line driving circuits 12a to 12d and the first to fourth scanning line driving circuits 13a to 13d are provided at adjacent positions. And the display panel 11 is formed in one by combining the 1st-4th display panel parts 11a-11d independent in this way. That is, the display panel 11 is composed of an assembly of four independent first to fourth display panel portions 11a to 11d.

  FIG. 2 shows an electrical configuration formed on the display panel 11. The first display panel section 11a is formed with N scanning lines Ya1 to YaN (N is 1 to i: i is a natural number) extending in the row direction and M (M is 1 to 1) extending in the column direction. j: j is a natural number) data lines Xa1 to XaM. In the first display panel section 11a, pixel circuits 30 are provided at positions corresponding to the intersections of the scanning lines Ya1 to YaN and the data lines Xa1 to XaM, and each of the pixel circuits 30 corresponds to the corresponding scanning lines Ya1 to YaN. Are electrically connected to the data lines Xa1 to XaM.

The second display panel 11b has N lines (N is 1 to i, i is a natural number) extending in the row direction.
Scanning lines Yb1 to YbN are formed, and M (X is 1 to j: j is a natural number) data lines Xb1 to XbM extending in the column direction. In the second display panel section 11b, pixel circuits 30 are provided at positions corresponding to the intersections of the scanning lines Yb1 to YbN and the data lines Xb1 to XbM, and each pixel circuit 30 corresponds to the corresponding scanning line Yb1 to YbN. Are electrically connected to the data lines Xb1 to XbM.

  Further, N scanning lines Yc1 to YcN (N is 1 to i: i is a natural number) extending in the row direction are formed on the third display panel portion 11c, and M lines (M is a line extending in the column direction). 1 to j: j is a natural number) data lines Xc1 to XcM. In the third display panel section 11c, pixel circuits 30 are provided at positions corresponding to the intersections of the scanning lines Yc1 to YcN and the data lines Xc1 to XcM, and each pixel circuit 30 corresponds to the corresponding scanning line Yc1 to YcN. Are electrically connected to the data lines Xc1 to XcM.

  Furthermore, the fourth display panel section 11d is formed with N scanning lines Yd1 to YdN (N is 1 to i: i is a natural number) extending in the row direction and M lines (M) extending in the column direction. 1 to j: j is a natural number) data lines Xd1 to XdM are formed. In the fourth display panel unit 11d, pixel circuits 30 are provided at positions corresponding to the intersections of the scanning lines Yd1 to YdN and the data lines Xd1 to XdM, and each pixel circuit 30 corresponds to the corresponding scanning line Yd1 to YdN. Are electrically connected to the data lines Xd1 to XdM.

  Next, the pixel circuit 30 formed in the first to fourth display panel portions 11a to 11d will be described with reference to FIG. The pixel circuits 30 of the first to fourth display panel portions 11a to 11d are substantially the same in the present embodiment, except that the data lines and the scanning lines to be connected are different. Therefore, for convenience of description, only the pixel circuit 30 at a position corresponding to the intersection of the scanning line Ya1 and the data line Xa1 in the first display panel unit 11a will be described, and detailed description of the other pixel circuits 30 will be omitted. .

  FIG. 3 is a circuit diagram showing the internal configuration of the pixel circuit 30. The pixel circuit 30 includes an organic electroluminescence element 36 as an electro-optic element, first to fourth transistors 31 to 34, and a holding capacitor 35. The holding capacitor 35 holds electric charges corresponding to the data signal supplied via the data line Xa1, and thereby adjusts the gradation of light emission of the organic electroluminescence element 36. In other words, the holding capacitor 35 holds a voltage corresponding to the current flowing through the data line Xa1. The first to third transistors 31 to 33 are n-channel TFTs (thin film transistors), and the fourth transistor 34 is a p-channel TFT (thin film transistor). Since the organic electroluminescence element 36 is a current-driven light emitting element similar to a photodiode, it is drawn here with a symbol of a diode.

  The source of the first transistor 31 is connected to the drains of the second to fourth transistors 32 to 34, respectively. The drain of the first transistor 31 is connected to the gate of the fourth transistor 34. The holding capacitor 35 is connected between the source and gate of the fourth transistor 34. The source of the fourth transistor 34 is also connected to the power supply voltage VOEL.

  The source of the second transistor 32 is connected to a single line driver 50 (to be described later) of the first data line driving circuit 12a via the data line Xa1. The organic electroluminescence element 36 has an anode connected to the source of the third transistor 33 and a cathode grounded.

The gates of the first transistor 31 and the second transistor 32 are commonly connected to the first sub-scanning line Ya11 constituting the scanning line Ya1, and the first scanning signal SCa11 for data writing is input thereto. The gate of the third transistor 33 is connected to the second sub-scanning line Ya12 constituting the scanning line Ya1, and the second scanning signal SCa12 for setting the light emission period is input.

  The first transistor 31 and the second transistor 32 are switching transistors used when accumulating charges in the storage capacitor 35. The third transistor 33 is a switching transistor that is kept on during the light emission period of the organic electroluminescence element 36. The fourth transistor 34 is a drive transistor for controlling the current value flowing through the organic electroluminescence element 36. The current value of the fourth transistor 34 is controlled by the amount of charge held in the holding capacitor 35.

FIG. 4 is a timing chart showing the operation of the pixel circuit 30. Here, the scanning signal SCa11 input via the first sub-scanning line Ya11, the scanning signal SCa12 input via the second sub-scanning line Ya12, and the data signal input via the data line Xa1 ( The data current value Iouta1) and the current value I flowing through the organic electroluminescence element 36
ELa1 is shown.

  Tc is one frame period, and is a period in which all scanning lines are completely selected. In the present embodiment, the display panel 11 includes first to fourth display panel portions 11a to 11d, and performs display operations independently in synchronization with each other in the first to fourth display panel portions 11a to 11d. One image is displayed. Accordingly, one frame period Tc is a period in which the N scanning lines Ya1 to YaN, Yb1 to YbN, Yc1 to YcN, and Yd1 to YdN are selected and completed in the first to fourth display panel portions 11a to 11d at the same time. is there. Tpr is a program period in which the light emission gradation of the organic electroluminescence element 36 is set in the pixel circuit 30, and the first scanning signal for data writing input through the first sub-scanning line Ya11. Determined by SCa11. Tel is a light emission period, which is a period during which the organic electroluminescence element 36 emits light, and is determined by the second scanning signal SCa12 for setting the light emission period input via the second sub-scanning line Ya12.

In the program period Tpr, a data signal corresponding to the light emission gradation is output from the first data line driving circuit 12a described later to the data line Xa1, while the first sub-scanning line Ya11 is output from the first scanning line driving circuit 13a described later. An H level scanning signal SCa11 is output above. Then, the first and second transistors 31 and 32 are turned on. At this time, the single line driver 50 of the first data line driving circuit 12a functions as a variable constant current source for flowing the data current value Iouta1 corresponding to the light emission gradation. The storage capacitor 35 has a data current value Iout.
The charge corresponding to a1 is held, and the program period Tpr ends. As a result, the voltage stored in the holding capacitor 35 is applied between the source / gate of the fourth transistor 34.

  When the program period Tpr ends, the scanning signal SCa11 becomes L level, and the first transistor 31 and the second transistor 32 are turned off. The first data line driving circuit 12a stops supplying the data signal (current value Iouta1) for the pixel circuit.

  Subsequently, in the light emission period Tel, the scanning signal SCa11 is maintained at the L level, and the first and second transistors 31 and 32 are kept in the OFF state, and the second scanning line is switched from the first scanning line driving circuit 13a. An H-level scanning signal SCa12 is output to Ya12 to set the third transistor 33 to the on state.

The holding capacitor 35 holds charges corresponding to the data signal (data current value Iouta1) in advance. Therefore, a current substantially the same as the data current value Iouta1 flows through the fourth transistor 34, and the current flows through the third transistor 33 to the organic electroluminescence element 36. Therefore, the organic electroluminescence element 36 emits light with a gradation corresponding to the data signal (data current value Iouta1) during the light emission period Tel.

  Each data line Xa1 to XaM of the first display panel unit 11a is connected to the first data line driving circuit 12a. Each data line Xb1 to XbM of the second display panel unit 11b is connected to the second data line driving circuit 12b. Each data line Xc1 to XcM of the third display panel unit 11c is connected to the third data line driving circuit 12c. Each data line Xd1 to XdM of the fourth display panel unit 11d is connected to the fourth data line driving circuit 12d.

  As shown in FIGS. 1 and 2, the first data line driving circuit 12a and the second data line driving circuit 12b are arranged on the upper side, that is, corresponding to the first display panel unit 11a and the second display, respectively, as shown in FIGS. It is provided at a position adjacent to the panel portion 11b. On the other hand, the third data line driving circuit 12c and the fourth data line driving circuit 12d are arranged on the lower side with respect to the display panel 11, as shown in FIGS. It is provided at a position adjacent to the fourth display panel unit 11d.

  The first data line driving circuit 12a includes a single line driver 50 for each of the data lines Xa1 to XaM, and each single line driver 50 outputs a data signal (data current) to the corresponding data line Xa1 to XaM. The values Ima1 to ImaM) are generated and supplied respectively. The first data line driving circuit 12a receives a horizontal synchronization signal HSYNC and image data from the control circuit. In response to the horizontal synchronization signal HSYNC, the first data line driving circuit 12a holds the image data of the group of pixel circuits 30 on one scanning line, and the single line driver 50 sends the held image data to the data signal. And output to each of the data lines Xa1 to XaM. That is, the first data line driving circuit 12a supplies a data signal to each pixel circuit 30 group on the scanning line of the first display panel unit 11a selected by the scanning line driving circuit 13a in response to the horizontal synchronization signal HSYNC.

  The second data line driving circuit 12b supplies data signals to the data lines Xb1 to XbM of the second display panel unit 11b. Similar to the first data line driving circuit 12a, the second data line driving circuit 12b includes a single line driver 50 for each of the data lines Xb1 to XbM. The single line driver 50 generates and supplies data line signals (data current values Imb1 to ImbM) to the corresponding data lines Xb1 to XbM, respectively. The second data line driving circuit 12b receives the horizontal synchronization signal HSYNC and image data from the control circuit. In response to the horizontal synchronization signal HSYNC, the second data line driving circuit 12b holds the image data of the pixel circuit 30b group on one scanning line, and the single line driver 50 receives the held image data as a data signal. And output to each of the data lines Xb1 to XbM. That is, the second data line driving circuit 12b supplies a data signal to each pixel circuit 30b group on the scanning line of the second display panel unit 11b selected by the second scanning line driving circuit 13b in response to the horizontal synchronization signal HSYNC. To do.

The third data line driving circuit 12c supplies data signals to the data lines Xc1 to XcM of the third display panel unit 11c. The third data line driving circuit 12c includes a single line driver 50 for each of the data lines Xc1 to XcM, like the first and second data line driving circuits 12a and 12b. The single line driver 50 generates and supplies data line signals (data current values Imc1 to ImcM) to the corresponding data lines Xc1 to XcM, respectively. The third data line driving circuit 12 c receives the horizontal synchronization signal HSYNC and image data from the control circuit 14. In response to the horizontal synchronization signal HSYNC, the third data line driving circuit 12c holds the image data of the pixel circuit 30c group on one scanning line, and the single line driver 50 sends the held image data to the data signal. And output to each of the data lines Xc1 to XcM. That is, the third data line driving circuit 12c supplies a data signal to each pixel circuit 30c group on the scanning line of the third display panel unit 11c selected by the third scanning line driving circuit 13c in response to the horizontal synchronization signal HSYNC. To do.

  The fourth data line driving circuit 12d supplies data signals to the data lines Xd1 to XdM of the fourth display panel unit 11d. The fourth data line driving circuit 12d includes a single line driver 50 for each of the data lines Xd1 to XdM, similarly to the first to third data line driving circuits 12a to 12c. The single line driver 50 generates and supplies data line signals (data current values Imd1 to ImdM) to the corresponding data lines Xd1 to XdM, respectively. The fourth data line driving circuit 12d receives the horizontal synchronization signal HSYNC and image data from the control circuit. In response to the horizontal synchronization signal HSYNC, the fourth data line driving circuit 12d holds the image data of the pixel circuit 30d group on one scanning line, and the held image data is sent to the data signal by the single line driver 50. And output to each of the data lines Xd1 to XdM. That is, the fourth data line driving circuit 12d supplies a data signal to each pixel circuit 30d group on the scanning line of the fourth display panel unit 11d selected by the fourth scanning line driving circuit 13d in response to the horizontal synchronization signal HSYNC. To do.

  As shown in FIG. 2, each scanning line Ya1 to YaN of the first display panel unit 11a is connected to the first scanning line driving circuit 13a. The first scanning line driving circuit 13a sequentially selects scanning lines among the N scanning lines Ya1 to YaN, and selects a pixel circuit group for one row in the first display panel unit 11a.

  The scanning lines Yb1 to YbN of the second display panel unit 11b are connected to the second scanning line driving circuit 13b. The second scanning line driving circuit 13b sequentially selects scanning lines among the N scanning lines Yb1 to YbN, and selects a pixel circuit group for one row in the second display panel unit 11b.

  Each scanning line Yc1 to YcN of the third display panel unit 11c is connected to the third scanning line drive circuit 13c. The third scanning line driving circuit 13c sequentially selects scanning lines among the N scanning lines Yc1 to YcN, and selects a pixel circuit group for one row in the third display panel unit 11c.

  The scanning lines Yd1 to YdN of the fourth display panel unit 11d are connected to the fourth scanning line driving circuit 13d. The fourth scanning line driving circuit 13d sequentially selects scanning lines among the N scanning lines Yd1 to YdN, and selects a pixel circuit group for one row in the fourth display panel unit 11d.

  The first to fourth scanning line driving circuits 13a to 13d respectively scan the corresponding scanning lines Ya1 to YaN, Yb1 to YbN, Yc1 to YcN, and Yd1 to YdN of the corresponding first to fourth display panel portions 11a to 11d. The selection operation is performed independently in synchronization. Accordingly, the first to fourth scanning line driving circuits 13a to 13d select the scanning lines YaN, YbN, YcN, and YdN in order from the scanning lines Ya1, Yb1, Yc1, and Yd1, respectively. As a result, the first to fourth scanning line drive circuits 13a to 13d are arranged so that the scanning lines Ya1 to YaN, Yb1 to YbN, Yc1 to YcN, and Yd1 to YdN of the first to fourth display panel units 11a to 11d are Corresponding scanning lines are selected at the same timing.

  The first to fourth scanning line drive circuits 13 a to 13 d receive the vertical synchronization signal VSYNC and the horizontal synchronization signal HSYNC from the control circuit 14. Each of the scanning line drive circuits 13a to 13d is based on the horizontal synchronization signal HSYNC, and each of the scanning lines Ya1 to YaN, Yb1 to YbN, Yc1 to YcN, Yd1 to YdN of the corresponding first to fourth display panel units 11a to 11d. A scanning signal for selecting each in turn is generated and output.

  In other words, the first to fourth scanning line drive circuits 13a to 13d respectively include the first scanning signal for writing data and the light emission period for setting the program period Tpr in the corresponding first to fourth display panel portions 11a to 11d. A second scanning signal for setting a light emission period for setting Tel is generated and output.

  Further, the first to fourth scanning line driving circuits 13a to 13d receive the light emission period control signal from the control circuit 14, and individually set the light emission periods Tel in the corresponding first to fourth display panel units 11a to 11d. It can be changed. Specifically, for example, when the second scanning signal SCa12 for setting the light emission period of the first scanning line driving circuit 13a shown in FIG. 4 is taken as an example, the second scanning signal SCa12 falls from the H level to the L level. The timing can be appropriately changed, and the same is performed in the second to fourth scanning line driving circuits 13b to 13d.

  This may cause a difference in electrical characteristics of the first to fourth data line driving circuits 12a to 12d due to, for example, manufacturing variation. When a difference occurs in the electrical characteristics, the characteristics of the data signal (data current value) with respect to the image data (light emission gradation) differ for each of the first to fourth data line driving circuits 12a to 12d. As a result, when the characteristics of the data signal with respect to the image data are different for each of the first to fourth data line driving circuits 12a to 12d, the first to fourth data line driving circuits are used even with image data having the same gradation in one frame. The brightness is different for each of 12a to 12d (first to fourth display panel portions 11a to 11d).

  For example, as shown in FIG. 5, image data (light emission gradation) in the order of the first data line drive circuit 12a, the second data line drive circuit 12b, the third data line drive circuit 12c, and the fourth data line drive circuit 12d. Let us consider a case where the data current value with respect to takes a large value. In this case, when compared with the same image data (light emission gradation), the first display panel unit 11a, the second display panel unit 11b, the third display panel unit 11c, and the fourth display panel unit 11d are brightly displayed in this order.

  Therefore, when there is a difference in electrical characteristics between the data line driving circuits 12a to 12d, the display panel units 11a to 11d are displayed based on the light emission period control signal from the control circuit 14 so that the display panels 11a to 11d are displayed uniformly. The light emission period Tel is changed for each of the display panel portions 11a to 11d. That is, the first to fourth scanning line drive circuits 13a to 13d generate and output the second scanning signal for setting the light emission period based on the light emission period control signal.

  In the case shown in FIG. 5, with respect to the data signal corresponding to the image data, the second display panel unit 11b, the third display panel unit 11c, and the fourth display panel are based on the light emission period Tel of the first display panel unit 11a. The light emission period is shortened in the order of the part 11d. As a result, the light emission periods Tel of the second to fourth display panel portions 11b to 11d that emit bright brightness due to the flow of a large data signal with respect to the image data are shortened, and the luminance difference from the first display panel portion 11a is reduced. Apparently disappear.

  The control circuit 14 outputs a vertical synchronizing signal VSYNC and a horizontal synchronizing signal HSYNC to the first to fourth scanning line driving circuits 13a to 13d, and to the first to fourth data line driving circuits 12a to 12d. A horizontal synchronization signal HSYNC is output. Further, the control circuit 14 receives display data for displaying an image on the display panel 11 from the computer 20, and receives image data composed of digital data for determining the light emission gradation of each pixel circuit 30 based on the display data. Generated and temporarily stored in the memory 15. When the control circuit 14 creates one frame of image data and stores it in the memory 15, the control circuit 14 divides the one frame of image data into image data displayed on the first to fourth display panel units 11a to 11d. Then, the control circuit 14 outputs the image data divided for each of the first to fourth display panel portions 11a to 11d to the corresponding first to fourth data line driving circuits 12a to 12d together with the horizontal synchronization signal HSYNC. To do.

  The control circuit 14 generates and outputs a light emission period control signal that determines the light emission period Tel of the first to fourth display panel units 11a to 11d. In this embodiment, the setting of each light emission period Tel of the first to fourth display panel units 11a to 11d is performed in advance before shipping the organic electroluminescence display device 10, and the image data shown in FIG. Obtain test data for the data signal.

  Based on the obtained inspection data, the light emission periods Tel of the first to fourth display panel portions 11a to 11d are set. The set light emission periods Tel of the first to fourth display panel portions 11 a to 11 d are held in a memory built in the control circuit 14. The control circuit 14 uses the light emission period Tel held in the memory to generate the first to fourth display panel portions 11a even if there is a difference in electrical characteristics between the first to fourth data line driving circuits 12a to 12d. A light emission period control signal for displaying ~ 11d with uniform brightness is output to each of the scanning line drive circuits 13a to 13d.

Next, the operation of the organic electroluminescence display device 10 configured as described above will be described.
The control circuit 14 divides one frame of image data into image data to be displayed on the first to fourth display panel units 11a to 11d, and the corresponding first to fourth data line driving circuits 12a to 12a. To 12d. Accordingly, the image data of the corresponding first to fourth display panel portions 11a to 11d are sequentially input from the control circuit 14 to the first to fourth data line driving circuits 12a to 12d, respectively.

  For example, the first to fourth scanning line drive circuits 13a to 13d output the first scanning signal for data writing, and the scanning lines Ya1 and Yb1 of the first to fourth display panel portions 11a to 11d, respectively. Yc1 and Yd1 are selected. When the scanning lines of the first to fourth display panel units 11a to 11d are selected, the first to fourth data line driving circuits 12a to 12d are connected to the pixel circuits 30, 30b, 30c, Data signals corresponding to the respective image data are output to the data 30d via the data lines. As a result, in the first to fourth display panel sections 11a to 11d, data signals corresponding to the respective image data are programmed in the pixel circuits 30, 30b, 30c, and 30d on the selected scanning line. When the program period Tpr elapses, the first to fourth scanning line drive circuits 13a to 13d output the second scanning signal for setting the light emission period, and the organic electros of the pixel circuits 30, 30b, 30c, and 30d on the scanning line. The luminescence element 36 is caused to emit light with a luminance corresponding to the data signal.

  At the same time, the first to fourth scanning line driving circuits 13a to 13d respectively select the next scanning line, and in the same manner as described above, the pixel circuits 30, 30b, 30c, and 30d on the selected scanning line are selected. Thus, data signals from the first to fourth data line driving circuits 12a to 12d are programmed. Thereafter, a similar operation is performed in order up to the scanning lines YaN, YbN, YcN, YdN of the display panel units 11a to 11d, and one frame image is composed of the first to fourth display panel units 11a to 11d. Is displayed.

  At this time, the first to fourth scanning line driving circuits 13a to 13d respectively set the falling timing from the H level to the L level of the second scanning signal for setting the light emission period based on the light emission period control signal. Then, the first to fourth scanning line drive circuits 13a to 13d lower the second scanning signal output to each second sub-scanning line from the H level to the L level at the set falling timing. The light emission of the organic electroluminescence element 36 of the pixel circuit on the scanning line is stopped. That is, the light emission periods Tel of the first to fourth display panel portions 11a to 11d are individually set.

Next, the effect of the organic electroluminescence display device 10 configured as described above will be described in detail.
(1) In the present embodiment, the display panel 11 is divided into four parts, that is, first to fourth display panel parts 11a to 11d, and the first to fourth display panel parts 11a to 11d are divided into four parts. First to fourth data line driving circuits 12a to 12d are provided, respectively. Therefore, even if the display panel 11 is enlarged in the column direction and the row direction (upsizing the screen), the length of the data line extending in the column direction and the length of the scanning line extending in the row direction can be shortened. And it can be written in a short time.

  (2) In the present embodiment, the control circuit 14 outputs a light emission period control signal to each of the scanning line drive circuits 13a to 13d. That is, when the electrical characteristics of the data line driving circuits 12a to 12d are different from each other, the entire display panel 11 is displayed uniformly by changing the light emission periods Tel of the display panel portions 11a to 11d. I did it.

  Therefore, even if there is a difference in the electrical characteristics of the first to fourth data line driving circuits 12a to 12d, display unevenness with the first to fourth display panel portions 11a to 11d can be prevented. Image display with high definition and high display quality.

  (3) In the present embodiment, the light emission period is changed in order to absorb variations in the electrical characteristics of the first to fourth data line drive circuits 12a to 12d. This can also be applied to the case where variations in electrical characteristics of the first to fourth display panel portions 11a to 11d are absorbed. That is, for example, when the characteristics of the light emission luminance with respect to the input current supplied from the data line driving circuit to the data line are different for each of the first to fourth display panel units 11a to 11d, the light emission period Tel is set to each display panel unit 11a to 11a. Change every 11d.

  More specifically, in FIG. 5, the horizontal axis is replaced from the image data to the data current value, and the vertical axis is replaced from the data current value to the light emission luminance. A case is considered in which the emission luminance with respect to the data current value takes a large value in the order of the first display panel unit 11a, the second display panel unit 11b, the third display panel unit 11c, and the fourth display panel unit 11d. In this case, on the basis of the light emission period Tel of the first display panel section 11a, the light emission periods are shortened in the order of the second display panel section 11b, the third display panel section 11c, and the fourth display panel section 11d.

  Accordingly, even when there is a difference in the electrical characteristics of the first to fourth display panel portions 11a to 11d, display unevenness between the first to fourth display panel portions 11a to 11d is prevented. The image can be displayed with high definition and high display quality.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the display panel in which a plurality of pixel circuits on one glass substrate are arranged in a matrix form is divided into two upper and lower parts, and the two upper and lower divided areas are used as the first and second display panel units. This is different from the above embodiment. In addition, the configurations of the data line driving circuit and the scanning line driving circuit for supplying data signals to the pixel circuits belonging to the first and second display panel units are different from those of the first embodiment. Therefore, the difference is detailed. Explained.

FIG. 6 is a block diagram showing a circuit configuration of an organic electroluminescence display device as an electro-optical device.
In the organic electroluminescence display device 100, a display panel 11 in which a plurality of pixel circuits on a single glass substrate are arranged and formed in a matrix is divided into two upper and lower parts, and the upper divided area is defined as a first display panel unit 11a. The lower area is a second display panel unit 11b.

The display panel 11 is formed with 2N scanning lines Ya1 to YaN and Yb1 to YbN (N is 1 to i: i is a natural number) extending in the row direction. Then, N scanning lines Ya1 to YaN are formed on the first display panel portion 11a of the upper half of the display panel 11, and N scanning lines Yb1 to YbN are formed on the second display panel portion 11b of the lower half. Has been.

  M data lines Xa1 to XaM (M is 1 to j: j is a natural number) extending in the column direction are formed on the first display panel portion 11a side of the display panel 11, respectively. Further, M (M is 1 to j: j is a natural number) data lines Xb1 to XbM extending in the column direction are formed on the second display panel section 11b side of the display panel 11, respectively.

  In the first display panel section 11a of the display panel 11, the pixel circuit 30 is provided at a position corresponding to the intersection of the scanning lines Ya1 to YaN and the data lines Xa1 to XaM. In the second display panel portion 11b of the display panel 11, a pixel circuit 30 is provided at a position corresponding to the intersection of the scanning lines Yb1 to YbN and the data lines Xb1 to XbM.

  The M data lines Xa1 to XaM formed on the first display panel portion 11a of the display panel 11 are divided into a plurality of groups (four groups in this embodiment). Then, four first data line drive circuits 12a1 to 12a4 made of a one-chip semiconductor integrated circuit device (IC) are provided for each of the divided groups. The four first data line driving circuits 12a1 to 12a4 are connected to the data lines assigned among the M data lines Xa1 to XaM formed in the first display panel section 11a. Each of the first data line driving circuits 12a1 to 12a4 is supplied with image data for the assigned data line from the control circuit 14. Each of the first data line driving circuits 12a1 to 12a4 supplies a data signal based on the image data to the corresponding data line. The four first data line driving circuits 12a1 to 12a4 are connected in series, and the first data line driving circuits 12a1 to 12a4 are supplied with the reference current Ik1 having the same value, and image data is generated using the reference current Ik1. A data signal based on is generated.

  Four second data line driving circuits 12b1 to 12b4 made of a one-chip semiconductor integrated circuit device (IC) are provided on the side of the display panel 11 on the second display panel section 11b side. Hereinafter, the second display panel unit 11b can be described in the same manner as in the case of the first display panel unit 11a described above.

FIG. 7 is a block circuit diagram showing an internal configuration of the first data line driving circuits 12a1 to 12a4.
In FIG. 7, the first data line driving circuit 12a1 includes a reference current input circuit section 40, a number of digital / analog conversion circuit sections 41 and reference current output circuit sections 42 corresponding to the set of data lines.

  The reference current input circuit unit 40 has a current mirror circuit, receives a reference signal from the outside, and generates a reference current Ik1 based on the reference signal. Each digital / analog conversion circuit unit 41 includes a current mirror circuit, and generates a data current (analog value) for image data (digital value) using the reference current Ik1 generated by the reference current input circuit unit 40. To do.

  The reference current output circuit unit 42 includes a current mirror circuit, and generates and outputs a current having the same current value as the reference current Ik1 using the reference current Ik1 generated by the reference current input circuit unit 40.

In the first data line drive circuits 12a2 to 12a4, the reference current output circuit section 42 of each of the first data line drive circuits 12a1 to 12a3 is the reference current input circuit of the first data line drive circuit 12a2 to 12a4 in the next stage. Connected to the unit 40.

  As a result, each digital / analog conversion circuit unit 41 provided in each of the first data line driving circuits 12a1 to 12a4 can generate a data current for image data using the reference current Ik1 having the same current value.

  Further, the reference current Ik2 supplied to the second data line driving circuits 12b1 to 12b4 is supplied to the first data line driving circuits 12a1 to 12a4 and has a value different from that of the reference current Ik1.

  Each of the second data line driving circuits 12b1 to 12b4 has the same circuit configuration as that of the first data line driving circuits 12a1 to 12a4 shown in FIG. 7, and is connected in series as described above. Then, the reference current Ik2 having a value different from the reference current Ik1 of the first data line drive circuit 12a1 is generated by the reference current input circuits of the first data line drive circuits 12a1 to 12a4. Therefore, each digital / analog conversion circuit provided in each of the second data line driving circuits 12b1 to 12b4 can generate a data current for image data using the reference current Ik2 having the same current value.

  The scanning line driving circuit 13 is connected to 2N scanning lines Ya1 to YaN and Yb1 to YbN. In the scanning line driving circuit 13, the light emission periods Tel of the pixel circuit on the first display panel unit 11a side and the pixel circuit on the second display panel unit 11b side are both the same and fixed. That is, in the present embodiment, the first and second data line driving circuits 12a1 to 12a4 and 12b1 to 12b4 are each formed by a one-chip semiconductor integrated circuit device (IC), and the electrical characteristic difference is small. The reference currents Ik1 and Ik2 to be applied can be adjusted differently. That is, in the first and second data line driving circuits 12a1 to 12a4 and 12b1 to 12b4, variations in the data signal with respect to the image data can be compensated by adjusting the supplied reference currents Ik1 and Ik2, and the light emission period Tel can be compensated. This is because there is no need to change and adjust.

  According to this embodiment, in each of the first and second data line drive circuits 12a1 to 12a4 and 12b1 to 12b4, the reference currents Ik1 and Ik2 when the digital / analog conversion circuit unit 41 generates a data current for the image data. Were adjusted respectively. As a result, in each of the first and second data line driving circuits 12a1 to 12a4 and 12b1 to 12b4, the data current for the image data can be generated with high accuracy, and the display quality can be improved.

  This is particularly effective when the number of data lines is increased and the number of first and second data line drive circuits 12a1 to 12a4 and 12b1 to 12b4 is increased in the large-screen display panel 11.

  In this embodiment, the reference current Ik1 supplied to the first data line driving circuits 12a1 to 12a4 provided on the first display panel unit 11a side and the second data line driving circuit provided on the second display panel unit 11b side are provided. The reference current Ik2 supplied to 12b1 to 12b4 can be made different. Accordingly, it is possible to compensate for the difference in characteristics of the first and second data line driving circuits 12a1 to 12a4 and 12b1 to 12b4 and to prevent display unevenness between the first and second display panel portions 11a and 11b. High-definition and high-quality image display is possible.

In the present embodiment, in one display panel 11, the light emission periods Tel of the pixel circuit on the first display panel unit 11a side and the pixel circuit on the second display panel unit 11b side are both the same and fixed. The light emission period Tel may be different between the first display panel unit 11a and the second display panel unit 11b as in the first embodiment. For example, the first data line driving circuit 12a1
When the electrical characteristics of 12a4 are different from the electrical characteristics of the second data line driving circuits 12b1 to 12b4, the light emission period Tel is changed according to the characteristics. In the case of the display panel 11 in which the lengths of the data lines Xa1 to XaM of the first display panel unit 11a are different from the lengths of the data lines Xb1 to XbM of the second display panel unit 11b, the data lines Xa1 to XaM and Xb1 The light emission period Tel may be changed according to the wiring resistance and wiring capacitance of XbM.

(Third embodiment)
Next, electronic devices using the organic electroluminescence display devices 10 and 100 described in the above embodiments will be described. The organic electroluminescence display devices 10 and 100 can be applied to various electronic devices such as a television, a personal computer, a mobile phone, and a digital camera.

  FIG. 8 is a perspective view of a large television 60. The large television 60 includes a large television display unit 61 using the organic electroluminescence display devices 10, 100, a speaker 62, and a plurality of operation buttons 63. Even in this case, the display unit 61 using the organic electroluminescence display devices 10 and 100 exhibits the same effect as described above. As a result, display unevenness can be prevented, and a large television 60 capable of displaying images with high definition and high display quality can be provided.

In addition, embodiment of this invention is not restricted to said embodiment, You may change as follows.
In the above embodiment, the number of scanning lines and the number of data lines of the first to fourth display panel portions 11a to 11d constituting the display panel 11 are configured to be equal. This may be embodied in a display panel configured differently for each display panel unit 11a to 11d.

  In the above embodiment, the first to fourth display panel units 11a to 11d select one scanning line at a time in synchronization with each other. For example, after the scanning lines of the first and second display panel portions 11a and 11b are selected in order in synchronization with each other, the scanning lines of the third and fourth display panel portions 11c and 11d are respectively synchronized in order. You may implement so that it may select.

  In the above embodiment, the data signals supplied to the data lines of the data line driving circuits 12a to 12d, 12a1 to 12a4, and 12b1 to 12b4 are data currents. This may be embodied by a data voltage. That is, even in the voltage-driven data line drive circuit, if there is an error in characteristics for each data line drive circuit, it can be similarly compensated.

  In the above embodiment, the present invention is embodied in an organic electroluminescence display device driven by an active matrix driving method having a pixel circuit, but is also applied to an organic electroluminescence display device driven by a passive driving method having no pixel circuit. Is possible.

  In the above embodiment, the display panel 11 is a display panel 11 in which a data current (analog value) is generated by a digital / analog conversion circuit (DAC) and display is controlled based on the generated data current. You may apply to display panels, such as gradation control (PWM).

  In the above embodiment, an example of an organic electroluminescence device has been described. However, the present invention can also be applied to a display device or an electronic device using a light emitting element other than the organic electroluminescence element 36. For example, the present invention can also be applied to an apparatus having other types of light emitting elements (LED, FED (Field Emission Display), etc.) whose light emission gradation can be adjusted according to the drive current.

The block diagram which shows the circuit structure of the organic electroluminescent apparatus for describing 1st Embodiment. FIG. 6 is a block diagram showing an internal configuration of a display panel unit and a relationship among first to fourth scanning line driving circuits and first to fourth data line driving circuits. FIG. 3 is a circuit diagram for explaining an internal configuration of a pixel circuit. 6 is a timing chart showing the operation of the pixel circuit. The figure for demonstrating the data current characteristic with respect to the image data according to the 1st-4th data line drive circuit. The block diagram which shows the circuit structure of the organic electroluminescent apparatus for describing 2nd Embodiment. FIG. 3 is a circuit diagram for explaining an internal configuration of a first data line driving circuit. The perspective view of the television for demonstrating 3rd Embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10,100 ... Organic electroluminescent apparatus as an electro-optical device, 11 ... Display panel, 11a ... 1st display panel part, 11b ... 2nd display panel part, 11c ... 3rd display panel part, 11d ... 4th display panel part , 12a ... 1st data line drive circuit, 12b ... 2nd data line drive circuit, 12c ... 3rd data line drive circuit, 12d ... 4th data line drive circuit, 12a1-12a4 ... 1st data line drive circuit, 12b, 12b1 to 12b4 ... second data line drive circuit, 13a ... first scan line drive circuit, 13b ... second scan line drive circuit, 13c ... third scan line drive circuit, 13d ... fourth scan line drive circuit, 14 ... control Circuit, 15 ... Memory, 20 ... Computer, 30 ... Pixel circuit, 31-34 ... Transistor, 35 ... Holding capacitor, 36 ... Organic electroluminescence element DESCRIPTION OF SYMBOLS 40 ... Reference current input circuit part, 41 ... Digital / analog conversion circuit part, 42 ... Reference current output circuit part, 50 ... Single line driver, 60 ... Television as electronic equipment, 61 ... Display unit, Ik1, Ik2 ... Reference Current, Tc ... 1 frame period, Tel ... Light emission period, Tpr ... Program period, Xa1 to XaM, Xb1 to XbM, Xc1 to XcM, Xd1 to XdM ... Data lines, Ya1 to YaN, Yb1 to YbN, Yc1 to YcN, Yd1 ~ YdN: scanning line.

Claims (17)

A plurality of display panels including a plurality of scanning lines, a plurality of data lines, and a plurality of pixels including electro-optic elements arranged at positions corresponding to intersections of the plurality of scanning lines and the plurality of data lines A display panel composed of an assembly of parts,
A data signal corresponding to image data representing an emission gradation of the plurality of pixels provided in each of the plurality of display panel units and corresponding to the display panel unit is supported through the plurality of data lines. A data line driving circuit for supplying to the pixel;
The electro-optical element provided in each of the plurality of display panel units, appropriately selecting the plurality of scanning lines provided in the corresponding display panel unit, and the corresponding display panel unit and the other display panel unit. An electro-optical device comprising: a scanning line driving circuit that controls the light emission periods to be different. The electro-optical device according to claim 1.
Each of the scanning line driving circuits provided in each of the plurality of display panel units controls a light emission period of the corresponding electro-optical element so that a difference in light emission luminance for each display panel unit is eliminated. An electro-optical device. The electro-optical device according to claim 1 or 2,
The light emission period of the electro-optical element controlled by each scanning line driving circuit is obtained by comparing the characteristics of the data line driving circuit corresponding to the pixel including the electro-optical element with the characteristics of the reference data line driving circuit. An electro-optical device characterized in that a constant coefficient is obtained and determined based on each coefficient. The electro-optical device according to any one of claims 1 to 3,
An electro-optical device comprising a memory for storing data of the light emission period, wherein each of the scanning line driving circuits determines the light emission period based on the data of the corresponding light emission period stored in the memory. The electro-optical device according to any one of claims 1 to 4,
The data line driving circuit provided in each of the plurality of display panel units is adjacent to the corresponding display panel unit on opposite sides of the display panel including the plurality of display panel units. An electro-optical device that is arranged on the side and supplies a data signal to the corresponding pixel via the plurality of data lines provided in the corresponding display panel unit. The electro-optical device according to claim 5.
The electro-optical device, wherein a plurality of data line driving circuits provided on the same side of the display panel have the same level of reference current for generating the data signal. The electro-optical device according to claim 6.
The reference current of the plurality of data line driving circuits provided on one side of the display panel is different from the reference current of the plurality of data line driving circuits provided on the other side of the display panel. Optical device. The electro-optical device according to claim 6 or 7,
In the plurality of data line driving circuits provided on the same side of the display panel, a circuit including a reference current source is configured by a current mirror circuit, and a reference current of the same level is supplied to each other. apparatus. The electro-optical device according to any one of claims 1 to 8,
The electro-optic device is an organic electroluminescence device. A plurality of display panels including a plurality of scanning lines, a plurality of data lines, and a plurality of pixels including electro-optic elements arranged at positions corresponding to intersections of the plurality of scanning lines and the plurality of data lines A display panel composed of an assembly of parts,
A data signal corresponding to image data representing an emission gradation of the plurality of pixels provided in each of the plurality of display panel units and corresponding to the display panel unit is supported through the plurality of data lines. A data line driving circuit for supplying to the pixel;
A driving method of an electro-optical device provided with each of the plurality of display panel units and a scanning line driving circuit that appropriately selects the plurality of scanning lines provided in the corresponding display panel unit,
A method for driving an electro-optical device, wherein the corresponding display panel unit and another display panel unit are controlled so that the light emission periods of the electro-optical elements are different. The method of driving an electro-optical device according to claim 10.
A driving method of an electro-optical device, wherein a light emission period of the corresponding electro-optical element is controlled so that a difference in light emission luminance among the plurality of display panel units is eliminated. The method of driving an electro-optical device according to claim 10 or 11,
The light emission period of the electro-optical element is obtained by comparing a characteristic of the data line driving circuit corresponding to the pixel including the electro-optical element with a characteristic of the reference data line driving circuit to obtain a constant coefficient. A method for driving an electro-optical device, wherein the determination is made based on each. The method for driving an electro-optical device according to any one of claims 10 to 12,
The data line driving circuit provided in each of the plurality of display panel units is adjacent to the corresponding display panel unit on opposite sides of the display panel including the plurality of display panel units. A driving method for an electro-optical device, characterized in that a data signal is supplied to the corresponding pixel via the plurality of data lines provided on the corresponding display panel section. The method of driving an electro-optical device according to claim 13.
A driving method of an electro-optical device, wherein a reference current of the same level is supplied to a plurality of data line driving circuits provided on the same side of the display panel in order to generate the data signal. The method for driving an electro-optical device according to claim 14.
The reference current of the plurality of data line driving circuits provided on one side of the display panel is different from the reference current of the plurality of data line driving circuits provided on the other side of the display panel. Driving method of optical device. The method for driving an electro-optical device according to any one of claims 10 to 15,
A method of driving an electro-optical device, wherein a data signal corresponding to image data supplied to a corresponding pixel via a data line by the plurality of data line driving circuits is a data voltage. An electronic apparatus comprising the electro-optical device according to claim 1.

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