JP2007212644A - Spontaneous light display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spontaneous light display device which suppresses electric power consumption to a control target electric power or under, even in an input signal whatsoever. <P>SOLUTION: The spontaneous light display device is equipped with a horizontal period data detecting element 1, which detects the features of the display data displayed by a spontaneous light display element 10 for every horizontal period; a screen data memory section 2 which stores the electric power value meeting the signal written into the spontaneous light display element 10 by the output of the horizontal period data detecting element 1; a lighting state memory section 3 which stores the lighting state of the pixels in the spontaneous light display element 10, a screen electric power computing section 4 which computes the electric power consumption of the spontaneous light display element 10, by the output of the screen data memory section 2 and the lighting state memory section 3; a lighting controller 5 which compares the output of the screen electric power computing section 4 and the control target electric power and outputs the lighting control signal, according to the comparison result in the next horizontal synchronization period; and a shift register 9 for lighting which outputs the signal for making the pixels emit light to the spontaneous light display element, based on the output of the lighting controller 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a self-luminous display device that displays a video signal using a self-luminous element.

  A conventional self-luminous display device displays an input video signal on a self-luminous display unit using an organic EL element, as described in Patent Document 1, for example. FIG. 16 shows a conventional self-luminous display device described in Patent Document 1.

  A conventional self-luminous display device includes an organic EL panel 44 that is a self-luminous display unit, an RGB matrix circuit 40 that converts an input luminance signal Y and color difference signals Cb and Cr into analog RGB signals, and the resolution of the organic EL panel 44 ( Resolution conversion circuit 41 for performing resolution conversion processing of analog RGB signals to match the number of horizontal / vertical dots), A / D conversion circuit 42 for converting analog RGB signals to digital RGB signals, and A / D conversion The panel control circuit 43 outputs a control signal corresponding to the level of the RGB signal supplied from the circuit 42 to the organic EL panel 44.

  Further, the conventional self-luminous display device includes a signal synthesis circuit 46 that synthesizes analog RGB signals, a low-pass filter (LPF) 47 that removes noise components and high-frequency components contained in the analog signals, and converts the analog signals into digital signals. An A / D conversion circuit 48 and a total data detection circuit 49 that inputs a signal sampled by the A / D conversion circuit 48 and detects total data for one field (one screen) are provided.

  The panel control circuit 43 sends a control signal corresponding to the level of the RGB signal supplied from the A / D conversion circuit 42 to the organic EL panel 44 and converts the total data for one field supplied from the total data detection circuit 49. Based on this, the light emission time of the organic EL element is controlled. The panel control circuit 43 has a lookup table (LUT) 45 for converting the total data for one field into the light emission time.

The relationship between the input data of the LUT 45 and the light emission time (duty ratio) is shown in FIG. For example, as shown by a solid line, a linear linear light emission time (duty ratio) is obtained with respect to input data. A broken line indicates a case where the characteristics are changed according to image quality preference or input source.
JP 2003-228331 A

  Since the conventional self-luminous display device reflects the detection result of the total data in the control of the light emission time in the next field, a delay occurs between the display data and the light emission control. Therefore, when the total data changes from a field with a small total data to a field with a large total data, the light emission time is long for a large total data screen, and a large amount of power is consumed. Even if a field memory is provided and the light emission time is controlled from the data of one screen, excessive power generation occurs during screen rewriting depending on the image data.

  The present invention solves the above-described conventional problems, and provides a self-luminous display device that realizes power control according to display data without time delay and suppresses power consumption below a control target power for any input signal. .

  The self-luminous display device of the present invention includes a self-luminous display unit in which pixels are formed by self-luminous elements, a horizontal period data detection unit that detects characteristics of display data displayed by the self-luminous display unit for each horizontal period, A screen data storage unit that stores signal information written to the self-luminous display unit by an output of the horizontal period data detection unit; a lighting state storage unit that stores lighting states of pixels of the self-luminous display unit; and the screen data A screen power calculation unit that calculates power consumption in the self-luminous display unit based on outputs of the storage unit and the lighting state storage unit, and compares the output of the screen power calculation unit with the control target power, and turns on according to the comparison result A lighting control unit that outputs a control signal for each horizontal period, and a lighting shift level that outputs a signal for causing the pixels of the self-luminous display unit to emit light based on the lighting control signal. It includes static and, the.

  According to the present invention, power control according to display data displayed on the self-luminous display unit can be realized without time delay, and power consumption can be suppressed to a control target power or less for any input signal.

  A self-luminous display device according to another aspect of the present invention includes a self-luminous display unit in which pixels are formed by self-luminous elements, and a horizontal unit that detects a feature of display data displayed by the self-luminous display unit for each horizontal period. A period data detection unit; a screen data storage unit that stores signal information written to the self-luminous display unit by an output of the horizontal period data detection unit; and a lighting state memory that stores lighting states of pixels of the self-luminous display unit A screen power calculation unit that calculates power consumption in the self-luminous display unit based on outputs of the screen data storage unit and the lighting state storage unit, and compares the output of the screen power calculation unit and the control target power, A lighting control signal corresponding to the comparison result is output every horizontal period, and a lighting control unit that outputs all lighting signals for turning on all the light emission scanning lines of the self-luminous display unit, and the lighting control signal Based on the output to the unit, a signal in units of horizontal scanning lines for causing the pixels of the self-luminous display unit to emit light and an all-lighting signal for causing all the luminous scanning lines to emit light are output to the self-luminous display unit And a lighting driver.

  According to the present invention, power control according to display data displayed on the self-luminous display unit can be realized without time delay, and fine power control can be realized.

  The horizontal period data detection unit may output a level integrated value obtained by weighting the RGB signals constituting the display data according to power consumption characteristics for each horizontal period.

  The screen data storage unit stores the level integrated value output from the horizontal period data detection unit for each horizontal scanning line number of the entire screen, and stores the stored contents corresponding to the screen display every time the horizontal scanning line is rewritten. It may be rewritten.

  The lighting state storage unit may store the lighting pulse output from the lighting control unit for one screen, and may rewrite the storage content in accordance with the lighting pulse being rewritten every horizontal period.

  The screen power calculation unit may calculate the power consumption of the self-luminous display unit when the lighting pulse input in the next horizontal period is turned on.

  The lighting control unit turns on the lighting pulse in the next horizontal period if the power consumption calculated by the screen power calculation unit is less than or equal to the control target power, and turns off the lighting pulse if the power consumption is greater than the control target power. A control signal may be output.

The lighting control unit turns on the lighting pulse in the next horizontal period when the power consumption calculated by the screen power calculation unit is equal to or lower than the control target power while one screen is being written, and the power consumption is the control target. If it is greater than the power, it outputs a lighting control signal that turns off the lighting pulse in the next horizontal period,
From the end of writing on one screen to the start of writing on the next screen, all lighting signals for turning on all the light emission scanning lines may be output.

  The screen power calculation unit provides a total lighting time for turning on all the light emission scanning lines, compares screen data at the time of light emission of all lines in the previous field and the current field, and when the power difference is small, the lighting control The unit may control the output time of the full lighting signal so that the light emission time of the current field approaches the light emission time of the previous field.

  The lighting driver outputs a signal, which is shifted every horizontal period with respect to the light emission scanning line, to the self-light emitting display unit in response to an output from the lighting control unit, and also turns on all the light emission scanning lines. A signal for turning on all the light-emission scanning lines may be output to the self-emission display unit according to the signal for use.

  The self-luminous display device includes a display data write processing unit that outputs a control signal and a data signal for writing display data to the self-luminous display unit, and a source driver that outputs a data signal to the self-luminous display unit And a write shift register that outputs a control signal for writing a signal from the source driver to the self-luminous display unit.

  According to the self-luminous display device of the present invention, it is possible to obtain an advantageous effect that power consumption can be suppressed to a control target power or lower for any input signal. In addition, according to the self-luminous display device of the present invention, the target power can be accurately controlled, so that the power supply burden of the display device system is reduced to realize low power consumption and to suppress deterioration in image quality. Has a special effect.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

Embodiment 1
The self-luminous display device according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a schematic configuration of the self-luminous display device according to the first embodiment of the present invention. The self-luminous display device of the present embodiment is a device that has a self-luminous display unit 10 in which pixels are configured by self-luminous elements such as organic EL elements, and displays an input video signal on the self-luminous display unit 10.

  The self-luminous display device of this embodiment outputs a control signal for writing display data to the self-luminous display unit 10 and a display data write processing unit 6 that outputs the data signal, and outputs a data signal to the self-luminous display unit 10. Source driver 7, write shift register 8 that outputs a control signal for writing a data signal to the self-luminous display unit 10 to the self-luminous display unit 10, and a horizontal period data detection unit 1 that detects characteristics of display data for each horizontal period A screen data storage unit 2 for storing signal information written from the output of the horizontal period data detection unit 1 to the self-luminous display unit 10; a lighting state storage unit 3 for storing lighting states in the self-luminous display unit 10 for one screen; The screen power calculation unit 4 that calculates the power consumption in the self-luminous display unit 10 based on the outputs of the data storage unit 2 and the lighting state storage unit 3, and the output and control of the screen power calculation unit 4 The lighting control unit 5 that compares the target power and outputs a lighting control signal corresponding to the comparison result for each horizontal period, and the light emission scanning signal for causing the pixel to emit light based on the lighting control signal. And a lighting shift register 9 for outputting to.

  FIG. 2 shows a pixel configuration of the self-luminous display unit 10. FIG. 2 shows an example in which the self-luminous element is composed of an organic EL. The pixel of the self-luminous display unit 10 includes a TFT 1 (Thin Film Transistor) to which a data signal that is an output signal of the source driver 7 is input at one end, a capacitor C1 connected to the TFT1, and a connection point between the TFT1 and the capacitor C1. The TFT 2 has a control terminal connected thereto, the TFT 3 connected in series to the TFT 2, and a self-luminous element connected to the TFT 3.

  The TFT 1 switches on / off based on a write signal which is a control signal output from the write shift register 8. When the TFT1 is turned on by a write signal within one horizontal period, a data signal that is a source driver output signal corresponding to the signal level written to the pixel is held in the capacitor C1.

  The TFT 3 switches on / off based on the light emission scanning signal output from the lighting shift register 9. When the TFT 3 is turned on by the light emission scanning signal after the writing signal is turned off, a current corresponding to the voltage held in the capacitor C1 flows to the TFT 2, and the self light emitting element is turned on.

  FIG. 3 shows a writing signal and a light emission scanning signal. The self-luminous display device writes a data signal output from the source driver 7 to the self-luminous display unit 10 by a write signal, and emits light in line units by an emission scanning signal. The self-luminous display device performs on / off control of light emission by the lighting pulse according to the horizontal period unit during the lighting control period of the light emission scanning signal.

  FIG. 4 shows a display state of the display screen of the self-luminous display unit 10. In FIG. 4, the display screen shifts from the time A to the time B and from the time B to the time C. At time A, an m-field screen is displayed. Since the write shift register 8 outputs a write signal so as to scan from the top of the screen to the bottom starting from the top of the display area of the self-luminous display unit 10, the upper half of the screen is next to the m field at time B. The screen of the n field that is the field of, and the lower half remains the screen of the m field. At time C, the screen is scanned to the bottom of the display area, and the screen is a full-screen n-field screen.

  FIG. 5 shows an internal configuration of the horizontal period data detection unit 1. The horizontal period data detection unit 1 multiplies the integrated value or average value of each RGB display data corresponding to the display area in the horizontal period by a weighting coefficient corresponding to the power consumption characteristics for each RGB pixel of the self-luminous display unit 10. To do. Next, all the multiplied results of RGB are added, and the total value is output as horizontal period power conversion data (level integrated value).

  FIG. 6 shows the configuration of the screen data storage unit 2. The screen data storage unit 2 stores horizontal period power conversion data for each horizontal line on the display screen of the self light emitting display unit 10 as signal information written in the self light emitting display unit 10. For example, n-line horizontal period power conversion data is stored in the screen data storage unit 2 as an n-line power value. When rewriting of the next field starts, the screen data storage unit 2 newly rewrites the stored power value and stores it as a power value corresponding to the signal written on the display screen.

  FIG. 7 shows a state in which the screen power calculation unit 4 calculates the power of the entire display screen from the storage information of the screen data storage unit 2 and the storage information of the lighting state storage unit 3. The lighting state storage unit 3 stores on / off information of the lighting state for each line. The screen power calculation unit 4 combines the lighting state on the display screen stored in the lighting state storage unit 3 with the power value for each line on the display screen stored in the screen data storage unit 2 to obtain the screen power consumption. calculate. As a calculation method, for example, when the rewriting of the horizontal period is completed (a state in which new line power is stored in the screen data storage unit 2), the lighting storage state of the lighting state storage unit 3 is shifted by one line. In the next horizontal period, the power of only the on-line when the first line is turned on is integrated.

  An example of the circuit configuration of the screen data storage unit 2, the lighting state storage unit 3, and the screen power calculation unit 4 for realizing the above calculation method is shown in FIG. The screen data storage unit 2 and the lighting state storage unit 3 each have a horizontal line number register. The horizontal period power conversion data output from the horizontal period data detection unit 1 is written to the register selected by the rewrite line pointer signal. For example, the horizontal period power conversion data for the first line is written to a register for one line. The lighting on / off state for each line is written in the register of the lighting state storage unit 3.

  The screen power calculation unit 4 turns on the lighting state of the first line, reads the lighting state from the second line to the last line from the register of the lighting state storage unit 3, and enables / disables the output of the screen data storage unit 2 Switch. The screen power calculation unit 4 integrates the horizontal period power conversion data for one screen. The screen power calculation unit 4 outputs the accumulated data as screen power when the lighting state of the first line in the next horizontal period is on. The lighting control unit 5 has a control target power value, and compares the output of the screen power calculation unit 4 with the control target power.

  FIG. 9 shows an operation flow when the lighting control unit 5 generates the lighting control signal for the first line based on the output of the screen power calculation unit 4. First, the screen power calculation unit 4 calculates the power value of one screen when the lighting state of the first line in the next horizontal period is turned on (S1). The lighting control unit 5 determines whether the output value of the screen power calculation unit 4 exceeds the control target power value (S2). If the output value of the screen power calculation unit 4 does not exceed the control target power value, the lighting control signal for the first line in the next horizontal period is turned on (S3). If the output value of the screen power calculation unit 4 exceeds the control target power value, the lighting control signal for the first line in the next horizontal period is turned off (S4).

  FIG. 10 shows an example of the lighting control state by the lighting shift register 9. FIG. 10 shows an example in which the display screen of the self-luminous display unit 10 is composed of eight horizontal scanning lines, and the power is controlled to 50% of all white. In the fields A1 to A9, when the lower half is a white screen and in the fields B1 to B9, the upper half is a white screen, the circled portion in FIG.

  When the lighting shift register 9 receives the lighting control signal from the lighting control unit 5, the lighting shift register 9 outputs the light emission scanning signal (8) to the self light emitting display unit 10. For example, in the light emission scanning signal (1), in B2 to B4, if a lighting pulse is input, the power exceeds 50%, so the light is turned off. In B5, since the power in the next horizontal period does not exceed 50% even when the lighting pulse is turned on, it is turned on.

  FIG. 11 shows an example of the power control state of this embodiment. 11 (a) and 11 (b), the target power is 50%, the display state is all white display and the white level is 50% to the all white 100% screen, and then the all white 100% to all white 50%. It shows the state of transition. FIG. 11 (a) shows the power control state of the conventional method. By determining the light emission duty of the next field from the total power information of the previous field, the lighting pulse is 50% all white and the light emission duty is 100% for the next field. %, The next field of 100% white has a light emission duty of 50%. As a result, a delay in power control occurs on the 100% white screen when shifting from 50% white, and a large amount of power is consumed. FIG. 11B shows the power control state of the present embodiment. Since power comparison is performed sequentially for each horizontal period, power consumption can be kept within 50% of the target, and power control with little delay is performed. Realized.

  FIG. 12 shows another example of the power control state of this embodiment. 12 (a) and 12 (b), the target power is 50%, and the display state is a screen in which the lower half white is displayed and the white level is 100%, the upper half white is displayed and the white level is 100%, and then the lower half white. A state is shown in which the display shifts from a white level of 100% to a white level of 100% in the upper half white display. FIG. 12A shows a conventional power control state in which a field memory is provided. By determining the light emission duty of the field from the total power information of the field, the lighting pulse is kept at the light emission duty of 100%. It is. However, at the transition from the lower half white screen to the upper half white screen, the power reaches nearly 100%. As a result, even when a field memory is provided, a delay in power control occurs and a large amount of power is consumed. FIG. 12B shows the power control state of this embodiment. Since the self-luminous display device of this embodiment sequentially performs power comparison for each horizontal period, power consumption can be kept to 50% of the target, and power control with little delay is realized.

  Thus, according to the self-luminous display device of the present embodiment, the power consumption can be suppressed below the control target power for any input signal. In addition, according to the self-luminous display device of the present embodiment, the power can be accurately controlled. Therefore, the power supply burden of the display device system is reduced, so that the power consumption is reduced and the deterioration of the image quality is suppressed. Can do.

<< Embodiment 2 >>
A self-luminous display device according to a second embodiment of the present invention will be described with reference to FIGS. FIG. 13 is a block diagram showing a schematic configuration of the self-luminous display device according to the second embodiment of the present invention. The self-luminous display device of the present embodiment is different from that of the first embodiment in that it has an output signal of the lighting control unit 25 and a lighting driver 20 instead of the lighting shift register 9. The other configuration of the self-luminous display device of this embodiment is the same as that of the first embodiment. In FIG. 13, the same components as those in FIG.

  The lighting control unit 25 of the present embodiment outputs a lighting control signal for each horizontal period according to the result of comparing the output of the screen power calculation unit 4 with the control target power, and all the light emission scanning lines of the self light emitting display unit 10. A full lighting signal for providing a period during which is turned on is output. Upon receiving these signals, the lighting driver 20 sends a light emission scanning signal for light emission in units of horizontal scanning lines of the pixels of the self light emission display unit 10 and a signal for light emission of the entire screen to the self light emission display unit 10. Output.

  FIG. 14 shows a connection state between the lighting driver 20 and the self-luminous display unit 10. A shift register signal, which is a lighting control signal indicating on / off of lighting input every horizontal period, is input from the lighting control unit 25 to the lighting driver 20 and all lighting signals are input. The lighting driver 20 shifts the lighting control signal from the top to the bottom of the light emission scanning line and outputs it as a light emission scanning signal. When a full lighting signal is input to the lighting driver 20, all the light emission scanning lines of the self light emitting display unit 10 are turned on.

  FIG. 15 shows the lighting control state of the present embodiment. A total lighting control time for emitting light from all pixels is provided during the period from the end of the data writing time of one field and the lighting pulse control period to the start of data writing of the next field.

  The screen power calculation unit 4 compares screen data when all lines of the previous field and the current field emit light. If the power difference is small, the lighting control unit 25 finally sets the light emission time of the current field to the light emission time of the previous field. All lighting signals are output so that The total lighting time may be any of several horizontal periods or a predetermined period within the horizontal period. After completion of the full lighting control period, lighting by the shift register signal is continued from the state before entering the full lighting period.

  Thereby, in the screen display of substantially the same power consumption, variation in lighting time can be suppressed, and a screen wobbling state in still image display or the like can be prevented.

  The self-luminous display device of the present invention has an effect of suppressing power consumption below a control target power for any input signal, and displays an input video signal on a display unit configured by a self-luminous element. Useful as such.

1 is a block diagram showing a schematic configuration of a self-luminous display device according to a first embodiment of the present invention. The figure which shows the pixel structure of the self-light-emitting display part 10 of Embodiment 1 of this invention. The figure which shows the write signal and light emission scanning signal of Embodiment 1 of this invention. The figure which shows the state of a change of the screen display of Embodiment 1 of this invention. The figure which shows the structure of the horizontal period data detection part 1 of Embodiment 1 of this invention. The figure which shows the structure of the screen data storage part 2 of Embodiment 1 of this invention. The figure which shows the memory | storage state of the lighting state memory | storage part 3 of Embodiment 1 of this invention. The figure which shows the state which calculates the screen power of Embodiment 1 of this invention Flowchart for determining ON / OFF of lighting control signal according to Embodiment 1 of the present invention The figure which shows the example of the lighting control of Embodiment 1 of this invention (A) is a figure which shows the conventional power control state, (b) is a figure which shows the power control state of Embodiment 1 of this invention. (A) is a figure which shows the conventional power control state, (b) is a figure which shows the power control state of Embodiment 1 of this invention. The block diagram which shows the schematic structure of the self-light-emitting display device of Embodiment 2 of this invention. The figure which shows the connection of the driver 20 for lighting and the self-light-emitting display part 10 of Embodiment 2 of this invention. The figure which shows the full lighting control period of Embodiment 2 of this invention A block diagram showing a schematic configuration of a conventional self-luminous display device The figure which shows LUT of the conventional self-light-emitting display device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Horizontal period data detection part 2 Screen data memory | storage part 3 Lighting state memory | storage part 4 Screen power calculation part 5, 25 Lighting control part 6 Display data writing process part 7 Source driver 8 Write shift register 9 Lighting shift register 10 Self light emission display Unit 20 Lighting driver 40 RGB matrix circuit 41 Resolution conversion circuit 42, 48 A / D conversion circuit 43 Panel control circuit 44 Organic EL panel 45 LUT
46 Signal synthesis circuit 47 LPF
49 Total data detection circuit

Claims (11)

A self-luminous display unit in which pixels are constituted by self-luminous elements;
A horizontal period data detection unit for detecting characteristics of display data displayed by the self-luminous display unit for each horizontal period;
A screen data storage unit for storing signal information written in the self-luminous display unit by the output of the horizontal period data detection unit;
A lighting state storage unit that stores lighting states of pixels of the self-luminous display unit;
A screen power calculation unit that calculates power consumption in the self-luminous display unit based on outputs of the screen data storage unit and the lighting state storage unit;
A lighting control unit that compares the output of the screen power calculation unit and the control target power, and outputs a lighting control signal according to the comparison result for each horizontal period;
Based on the lighting control signal, a lighting shift register that outputs a signal for causing the pixels of the self-luminous display unit to emit light to the self-luminous display unit;
A self-luminous display device comprising: A self-luminous display unit in which pixels are constituted by self-luminous elements;
A horizontal period data detection unit for detecting characteristics of display data displayed by the self-luminous display unit for each horizontal period;
A screen data storage unit for storing signal information written in the self-luminous display unit by the output of the horizontal period data detection unit;
A lighting state storage unit that stores lighting states of pixels of the self-luminous display unit;
A screen power calculation unit that calculates power consumption in the self-luminous display unit based on outputs of the screen data storage unit and the lighting state storage unit;
Compare the output of the screen power calculation unit and the control target power, and output a lighting control signal according to the comparison result every horizontal period, and all the light emission scanning lines of the self-emission display unit to turn on A lighting control unit that outputs a lighting signal;
Based on the output of the lighting control unit, a signal in units of horizontal scanning lines for causing the pixels of the self-luminous display unit to emit light and a signal for all lighting for causing all the light emitting scanning lines to emit light are displayed on the self-luminous display. Lighting driver to output to the
A self-luminous display device comprising:   3. The horizontal period data detection unit outputs a level integrated value obtained by weighting the RGB signals constituting the display data according to power consumption characteristics for each horizontal period period. The self-luminous display device described in 1.   The screen data storage unit stores the level integrated value output from the horizontal period data detection unit for each horizontal scanning line number of the entire screen, and stores the stored contents corresponding to the screen display every time the horizontal scanning line is rewritten. The self-luminous display device according to claim 1 or 2, wherein rewriting is performed.   The lighting state storage unit stores lighting pulses output from the lighting control unit for one screen, and rewrites the stored contents in accordance with the lighting pulses being rewritten every horizontal period. The self-luminous display device according to claim 1 or 2.   The self-luminous display device according to claim 1, wherein the screen power calculating unit calculates power consumption of the self-luminous display unit when a lighting pulse input in a next horizontal period is turned on.   The lighting control unit turns on the lighting pulse in the next horizontal period if the power consumption calculated by the screen power calculation unit is less than or equal to the control target power, and turns off the lighting pulse if the power consumption is greater than the control target power. The self-luminous display device according to claim 1, wherein a control signal is output. The lighting control unit turns on the lighting pulse in the next horizontal period when the power consumption calculated by the screen power calculation unit is equal to or lower than the control target power while one screen is being written, and the power consumption is the control target. If it is greater than the power, it outputs a lighting control signal that turns off the lighting pulse in the next horizontal period,
3. The self-luminous display device according to claim 2, wherein all lighting signals for turning on all the light emission scanning lines are output after the writing of one screen is completed until the writing of the next screen is started. .   The screen power calculation unit provides a total lighting time for turning on all the light emission scanning lines, compares screen data at the time of light emission of all lines in the previous field and the current field, and when the power difference is small, the lighting control 3. The self-luminous display device according to claim 2, wherein the unit controls the output time of the full lighting signal so that the light emission time of the current field approaches the light emission time of the previous field.   The lighting driver outputs a signal, which is shifted every horizontal period with respect to the light emission scanning line, to the self-light emitting display unit in response to an output from the lighting control unit, and also turns on all the light emission scanning lines. 3. The self-luminous display device according to claim 2, wherein a signal for turning on all the light-emission scanning lines is output to the self-luminous display unit in accordance with a signal for use. A display data write processing unit for outputting a control signal and a data signal for writing display data to the self-luminous display unit;
A source driver that outputs a data signal to the self-luminous display unit;
A write shift register that outputs a control signal for writing a signal from the source driver to the self-luminous display unit;
The self-luminous display device according to claim 1, further comprising:

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