JP2007227012A - Planar light emitting device and display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thin planar light emitting device capable of application to a liquid crystal display device of field sequential drive type and a liquid crystal display device. <P>SOLUTION: In the planar light emitting device 20, rectangular lighting regions a, b, c, d which emit light emitted by a blue organic EL element 24, a green organic EL element 26, and a red organic EL element 28 from the whole face are arranged in a plurality of stages, and each lighting region a, b, c, d is constituted to be lighted or turned off independently. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a flat light emitting device and a non-self light emitting display device using the flat light emitting device, and more particularly, to a flat light emitting device and a display device that are thin and can be enlarged.

  Conventionally, a ferroelectric liquid crystal color electro-optical device provided with a planar light source composed of a plurality of light sources capable of continuously irradiating light of different colors to a ferroelectric liquid crystal display element has been known. (For example, refer to Patent Document 1).

  The planar light source of the ferroelectric liquid crystal color electro-optical device described in Patent Document 1 includes a group of light sources arranged and wired so as to be simultaneously turned on / off along the scanning electrodes of the ferroelectric liquid crystal display element. Each group of light sources can be turned on / off individually, and each group of light sources is sequentially selected by a scanning signal to which a ferroelectric liquid crystal display element is applied. Are turned on and off sequentially.

In addition, by synchronizing the timing of turning on and off each group of flat light emitting elements with the scanning signal at the time of screen rewriting of the ferroelectric liquid crystal display element, the invention reduces the light quantity difference between the uppermost and lowermost pixels. is there.
Japanese Patent No. 2518625 (page 1-2, FIGS. 1 and 7)

  FIG. 7 of Patent Document 1 shows a perspective view of the structure of the planar light emitting device. As shown in the figure, in the ferroelectric liquid crystal color electro-optical device described in Patent Document 1, since the light source of the LED is arranged directly below the ferroelectric liquid crystal display element, a sidelight type liquid crystal display device is provided. Compared with, the size of the liquid crystal display element can be increased. However, when a top view type LED light source is arranged directly below the liquid crystal display element, the light from the light emitting surface is diffused by taking a long optical path length from the LED to the liquid crystal display element due to the directivity of the LED light source. It was necessary to reduce unevenness.

  FIG. 5 shows a cross-sectional view of a conventional liquid crystal display device 910 provided with a direct type flat light emitting device 920. The flat light emitting device 920 includes a plurality of LED light sources 930 that emit light from a predetermined region, a wiring that supplies power to the plurality of LED light sources 930, an LED substrate 934 that holds the plurality of LED light sources 930, and an LED light source. A diffusion member 964 that further diffuses the light emitted by the light source 930 in all directions to reduce unevenness in the amount of light, and the light diffused in all directions by the diffusion member 964 stands in the X direction and the Y direction, and the emitted light is directed in the vertical direction. Prism sheets 966X and 966Y that work to increase the brightness when the user looks at the liquid crystal display device 910 from the vertical direction and the light emission spectrum emitted from the LED light source 930 is narrowed to compensate for backlight characteristics. Compensation plate 968 is provided.

  Next, the configuration of the liquid crystal display element 970 will be described. The liquid crystal display element 970 includes polarizing plates 972 and 992 that transmit light of a component oscillating in one direction out of light emitted from the flat light emitting device 920, glass substrates 974 and 990 that hold a liquid crystal layer 984, It has a pixel electrode 976 and a common electrode 988 for applying a voltage to the liquid crystal constituting the pixel. A TFT, a pixel electrode 976, and a light distribution film (not shown) can be formed on the surface of the glass substrate 974. Further, a common electrode 988 or a light distribution film (not shown) can be formed on the surface of the glass substrate 990.

  As shown in FIG. 5, the direct type flat light emitting device 920 provided in the liquid crystal display device 910 has a distance from the LED light source 930 to the liquid crystal display element 970 in order to uniformly scatter the light emitted from the LED light source 930. Need to take longer. Therefore, there is a problem that the liquid crystal display device 910 becomes thick. In addition, in order to uniformly adjust the luminance of the flat light emitting device 920 in the light emitting surface, an optical sheet such as the diffusing member 964 and the prism sheets 966X and 966Y is required.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a thin flat light emitting device applicable to a field sequential drive type liquid crystal display device and a liquid crystal display device with less color unevenness using the flat light emitting device. It is intended to provide.

  In order to solve the above problems, the display device of the present invention has the following configuration. That is, (1) the planar light emitting device according to the present invention has a configuration in which a plurality of rectangular lighting areas for emitting light emitted from the organic EL from the entire surface are arranged in a plurality of stages, and each of the lighting areas is turned on / off independently. . (2) In the liquid crystal display device according to the present invention, a plurality of rectangular lighting areas for emitting light emitted from the organic EL from the entire surface are arranged in a plurality of stages, and each lighting area is turned on / off independently. And forming a pixel by arranging a signal electrode parallel to one side of the lighting region and a scanning electrode perpendicular to the signal electrode in a matrix on a liquid crystal thin film sandwiched between two transparent members, and the planar light emitting device And a liquid crystal display element that blocks light emitted from each of the lighting regions for each pixel, and applies lighting to the scanning electrodes of the pixels that block the lighting regions to turn on / off the lighting regions of the plurality of stages. The configuration is such that it is sequentially performed in synchronization with the signal.

  According to the planar light emitting device of (1) above, it is possible to provide a thin planar light emitting device having a plurality of lighting regions that can be turned on and off independently. By applying this flat light emitting device to a liquid crystal display device, a thin and large screen liquid crystal display device can be provided. Further, the present invention can be applied to a field sequential liquid crystal display device capable of increasing the aperture ratio with high resolution. In addition, according to the above (2), it is possible to provide a thin liquid crystal display device with less luminance unevenness and color unevenness on the screen by reducing the light amount difference between the uppermost pixel and the lowermost pixel. In addition, a large-screen liquid crystal display device with low power consumption can be provided, and a liquid crystal display device with high resolution and a high aperture ratio can be provided by employing a field sequential driving method.

  The planar light emitting device according to the present invention has a configuration in which a plurality of rectangular lighting regions that emit light emitted from the organic EL from the entire surface are arranged in a plurality of stages, and each lighting region is turned on and off independently. By applying this flat light emitting device to a liquid crystal display device, a thin and large screen liquid crystal display device can be provided. Further, the light source of the flat light emitting device is configured by laminating organic EL layers of a plurality of colors, and each lighting region is configured to be turned on / off independently of a plurality of types of single colors. Thereby, it is possible to individually turn on / off a plurality of types of single colors for each lighting region.

  Further, the organic EL layer of the flat light emitting device is laminated in the order of the blue organic EL layer, the green organic EL layer, and the red organic EL layer from the light emitting surface to the lower layer, and each lighting region has a plurality of types of single colors. It is configured to turn on and off independently.

  By applying such a flat light-emitting device as a backlight of a field sequential liquid crystal display device capable of increasing the aperture ratio with high resolution, it is caused by a light amount difference between the uppermost and lowermost pixels. A thin liquid crystal display device with little color unevenness can be provided.

  In addition, the display device of the present invention includes a planar light emitting device in which a plurality of rectangular lighting areas for emitting organic EL light emission from the entire surface are arranged, and each lighting area is turned on and off independently, and a signal electrode and a lighting area. A pixel formed by a scanning electrode parallel to one side, and a display element that blocks light emitted from each lighting region of the flat light-emitting device for each pixel. The lighting region is sequentially configured in synchronization with the scanning signal applied to the scanning electrode of the pixel that blocks the light.

  Thereby, a light amount difference between the uppermost pixel and the lowermost pixel can be reduced, and a thin liquid crystal display device with less luminance unevenness and color unevenness on the screen can be provided. In addition, a large-screen liquid crystal display device can be provided, and a liquid crystal display device with high resolution and a high aperture ratio can be provided by employing a field sequential driving method.

  Alternatively, in the display device of the present invention, a plurality of rectangular lighting regions that emit light emitted from the entire surface of the stacked organic EL layers are arranged in a plurality of stages, and each lighting region independently has a plurality of types of single colors. A flat light-emitting device that turns on and off sequentially in a time-division manner and a pixel that is formed by a scanning electrode that is parallel to one side of the signal electrode and the lighting region, and blocks light emitted from each lighting region of the flat light-emitting device for each pixel And a driver for sequentially turning on / off each of the lighting regions in a plurality of stages in synchronization with a scanning signal applied to a scanning electrode of a pixel that blocks the lighting region for each of a plurality of types of single colors. It was set as the structure provided. Thus, a thin field sequential drive type liquid crystal display device with less luminance unevenness and color unevenness on the screen can be provided by reducing the light amount difference between the uppermost pixel and the lowermost pixel. In addition, a bright and fine liquid crystal display device with a large screen can be provided.

  Further, the driver of the display device is configured to turn on the lighting regions in a plurality of stages after the first predetermined time has elapsed from the start of applying the scanning signal to the pixels that shield the lighting regions, and to turn off the lighting after the second predetermined time has elapsed. . Thus, a thin field sequential drive type liquid crystal display device with less luminance unevenness and color unevenness on the screen can be provided by reducing the light amount difference between the uppermost pixel and the lowermost pixel. Further, power consumption in the flat light emitting device of the liquid crystal display device can be reduced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an external perspective view for explaining an arrangement of a flat light emitting device and its lighting areas according to the present invention. First, the arrangement of a plurality of lighting regions existing on the light emitting surface of the flat light emitting device will be described with reference to FIG. In the embodiment shown in FIG. 1, rectangular lighting areas a, b, c, and d are arranged in four stages on the light emitting surface of the flat light emitting device 20. Each of the lighting areas a, b, c, and d can be turned on / off independently, and in this embodiment, in particular, each color of blue, green, and red, or a plurality of colors that are a combination thereof can be selected. It can be turned on and off independently.

  The flat light emitting device 20 is configured by laminating a light source of a glass substrate 22 that forms a light emitting surface, a blue organic EL 24 that emits blue light, a green organic EL 26 that emits green light, and a red organic EL 28 that emits red light. Yes. Further, between the blue organic EL 24 and the green organic EL 26, and between the green organic EL 26 and the red organic EL 28, the insulating film 30 that insulates each organic EL layer, and the light emitted from each organic EL emits light. A reflection film 32 to be reflected is laminated. The order in which the organic EL layers are stacked is preferably stacked in the order of low emission luminance from the glass substrate 22 side.

  The blue organic EL 24, the green organic EL 26, and the red organic EL 28 are composed of, for example, a transparent common electrode, a hole transport layer, a light emitting layer, an electron transport layer, and a transparent electrode. In order to turn on / off each lighting region a, b, c, d independently, a transparent electrode is provided separately for each lighting region a, b, c, d. The light emitted from the blue organic EL 24 passes through the glass substrate 22 side and is emitted from the entire surface of each lighting region a, b, c, d. On the other hand, the light emitted to the green organic EL 26 side is transmitted through the green organic EL 26 and the red organic EL 28, then reflected by the reflective film 32, and again transmitted through the red organic EL 28, the green organic EL 26, the blue organic EL 24, and the glass substrate 22. It emits from the entire surface of each lighting area a, b, c, d. The light emitted from the green organic EL 26 and emitted toward the glass substrate 22 is transmitted through the blue organic EL 24 and the glass substrate 22 and emitted from the entire surface of each lighting region a, b, c, d. On the other hand, the light emitted to the red organic EL 28 side is transmitted through the red organic EL 28 and then reflected by the reflective film 32, and is again transmitted through the red organic EL 28, the green organic EL 26, the blue organic EL 24, and the glass substrate 22 to each lighting region a. , B, c, and d are emitted from the entire surface. The light emitted from the red organic EL 28 and emitted toward the glass substrate 22 passes through the green organic EL 26, the blue organic EL 24, and the glass substrate 22 and is emitted from the entire surface of each lighting region a, b, c, d. On the other hand, the light directed toward the reflective film 32 is reflected by the reflective film 32, passes through the red organic EL 28, the green organic EL 26, the blue organic EL 24, and the glass substrate 22 again, and from the entire surface of the lighting areas a, b, c, d. Exit.

  Next, the configuration of the liquid crystal display device 10 using the flat light emitting device 20 will be described with reference to the cross-sectional view shown in FIG. In addition, about the component same as the component demonstrated in FIG. 1, the same number is attached | subjected and description is abbreviate | omitted.

  As shown in FIG. 2, the liquid crystal display device 10 includes, for example, a planar light emitting device 20 that emits light emitted from a blue organic EL 24, a green organic EL 26, or a red organic EL 28 from the entire surface, and lighting regions a, b, c, d. Each of the lighting regions a of the flat light emitting device 20 is formed by arranging a signal electrode parallel to one side (in the example shown in FIG. 2 in the vertical direction of the paper surface) and a scanning electrode orthogonal to the signal electrode in a matrix to form a pixel. , B, c, d, and a liquid crystal display element 70 that shields light emitted from each pixel.

The glass substrate 22 of the flat light emitting device 20 is provided with a cap 34 for preventing moisture from coming into contact with each organic EL so as to prevent each organic EL from coming into contact with outside air. The cap 34 is filled with an inert gas such as N ₂ and sealed with a desiccant to ensure the lifetime of each organic EL.

  The liquid crystal display element 70 is a glass composed of polarizing plates 72 and 92 that transmit light of a vibration component in one direction out of the light emitted from the flat light emitting device 20, and two transparent members that hold the liquid crystal layer 84. It has the board | substrates 74 and 90, and the pixel electrode 76 and the common electrode 88 which apply a voltage to the liquid crystal which comprises a pixel.

  On the surface of the glass substrate 74, a signal electrode for selecting a line for scanning an image, a scanning electrode orthogonal to the signal electrode and transmitting a scanning signal, and a TFT element arranged in a matrix in a region surrounded by the signal electrode and the scanning electrode In addition, a pixel electrode 76 and an alignment film (not shown) are formed. Further, a common electrode 88 and an alignment film (not shown) are formed on the surface of the glass substrate 90.

  When the liquid crystal display element is a normally white mode display element, the polarization characteristics of the liquid crystal aligned on the polarization axis of the polarizing plate 72 and the lower surface of the liquid crystal layer 84 are matched. The normally white mode liquid crystal display element refers to a liquid crystal display device that has a high light transmittance when no voltage is applied and a low light transmittance when a voltage is applied. Since the liquid crystal molecules are arranged in a 90-degree twisted arrangement according to the respective orientation directions, the polarization characteristics of the polarizing plate 92 and the polarization characteristics of the liquid crystal aligned on the upper surface of the liquid crystal layer 84 are matched. The light rotated 90 degrees along the liquid crystal molecules passes through the polarizing plate 92 and is output from the liquid crystal display element 70.

  One side of the lighting areas a, b, c, and d of the flat light emitting device 20 is arranged in parallel with the signal electrodes of the liquid crystal display element 70 so that one or a plurality of signal electrode groups are included in one lighting area. To do. Then, the pixel group selected by the one or more signal electrode groups forms an image by blocking the light emitted from one lighting region. Light emission in the lighting area is sequentially turned on / off in synchronization with a scanning signal of a pixel that blocks light emitted from the lighting area. For example, the lighting region a is turned on in synchronization with the start of scanning of a pixel existing at a position where the light in the lighting region a is shielded, and the light is turned off in synchronization with the end of scanning of the pixel. It can carry out similarly similarly about area | region b, c, d. Alternatively, the light may be turned on / off in synchronization with the end of scanning of the pixels that block the light in the lighting region.

  By performing the on / off process in synchronization with this scanning signal, the upper scanning line for writing the pixel data first takes a long time to transmit light, so that the upper part of the liquid crystal display device becomes brighter, and finally the pixel data is saved. It is possible to improve the phenomenon in which the lower scanning line to be written is dark because the time during which light is transmitted is short.

  When an image is displayed with brightness set for each pixel of the liquid crystal display element 70, a driver scan electrode driving circuit provided outside the liquid crystal display element 70 is connected to the scan electrode ( (Not shown) are sequentially selected one by one, and a voltage corresponding to the brightness of the pixel is applied to the selected scan electrodes. When a voltage is applied to the scan electrode, a voltage is applied between the pixel electrode 76 and the common electrode 88 via the TFT, and the liquid crystal molecules rotate to a position corresponding to the voltage. In the state where no voltage was applied, all of the light transmitted through the polarizing plate 72 was rotated 90 degrees along the liquid crystal molecules. However, a part of the light transmitted through the polarizing plate 72 was directly polarized because the liquid crystal molecules were rotated. The plate 92 is reached. Since the polarization direction of the polarizing plate 92 is 90 degrees different from the polarization direction of the polarizing plate 72, the light directly transmitted through the liquid crystal layer 84 is not output to the outside of the liquid crystal display element 70, and only the portion of the pixel electrode 76 transmits light. The transmittance decreases and darkens. By creating a similar situation for all the pixel electrodes 76, an image can be displayed on the liquid crystal display device 10.

  Next, the drive timing of the liquid crystal display element 70 and the light emission timings of the lighting regions a, b, c, and d in the flat light emitting device 20 will be described with reference to FIG. FIG. 3 is a diagram showing the drive timing of the liquid crystal display element and the light emission timing of each lighting region in the flat light emitting device. In the embodiment shown in FIG. 3, the planar light source 20 emits light by sequentially time-dividing each of the three primary colors of R, G, and B, and the liquid crystal display element 70 shields the emitted light in synchronization with each of the three primary colors. . As a result, field images (R field, G field, and B field) of each color that are time-divided are sequentially formed.

  FIG. 3 is a diagram showing the driving timing of the liquid crystal display device 10 that performs the driving in the field sequential driving method in which one frame image is formed by temporal color mixing of the field images of the respective colors divided at that time. The vertical axis direction of FIG. 3 represents n scanning signal lines in the liquid crystal display element 70, and the horizontal axis direction represents the contents and order of signals written to the scanning electrodes in units of time. The liquid crystal display element 70 includes n scanning lines from the first row at the top to the nth row at the bottom. In FIG. 3, a state in which the scanning signal S is sequentially written from the uppermost first scanning line to the lowermost nth scanning line is indicated by an oblique solid line. It should be noted that even when a scanning signal S for displaying an image is applied to the pixel electrode, the liquid crystal layer does not respond immediately, and only after a predetermined delay time D has passed, the specified amount of light is transmitted. become.

  In the example shown in FIG. 3, the driver of the liquid crystal display device 10 writes the scanning signal S to each scanning signal line, and the liquid crystal is in a predetermined state by instructing the monochrome display for all the pixels at once. And a reset time E to be aligned with each other. The time between the writing time R and the reset time E is a waiting time for ensuring the transmission time of the light emitted from the flat light emitting device 20 when the liquid crystal display element 70 responds to the input scanning signal S. . In the case of the so-called normally white liquid crystal display device 70, during the reset time E, a process of writing a scanning signal for performing black display to each pixel electrode is performed.

  In addition, as shown in FIG. 1, the liquid crystal display device 10 according to the present invention has rectangular lighting areas a, b, c, and d that emit light emitted from the organic EL from the entire surface, arranged in four stages. For example, the pixels from the first row to the n / 4th row form a part of the image by blocking the light emitted from the lighting region a. Similarly, the pixels from the (n + 1) / 4th row to the 2n / 4th row block the light emitted from the lighting region b, and the pixels from the (2n + 1) / 4th row to the 3n / 4th row are The light emitted from the lighting region c is shielded, and the pixels from the (3n + 1) / 4th row to the nth row are configured to shield the light emitted from the lighting region d. The driver of the liquid crystal display device 10 writes the scanning signal S to the scanning lines from the first row to the n / 4th row, and then instructs the red organic EL 28 in the lighting region a to turn on after the first predetermined time T1 has elapsed. Then, after the second predetermined time T2 has elapsed, the red organic EL 28 in the lighting region a is instructed to be turned off. In FIG. 3, the timing at which the lighting region a emits red light is represented by Ra. Similarly, the timing at which the lighting region a emits green is represented by Ga, and the timing at which blue is emitted is represented by Ba.

  Next, after writing the scanning signal S to the scanning lines from the (n + 1) / 4th row to the 2n / 4th row, the lighting is instructed to the red organic EL 28 in the lighting region b after the first predetermined time T1 has elapsed. Then, after the second predetermined time T2 has elapsed, the red organic EL 28 in the lighting region b is instructed to be turned off. The timing at which the lighting region b emits red is represented by Rb, and similarly, the timing at which green is emitted is represented by Gb, and the timing at which blue is emitted is represented by Bb. Next, after the scanning signal S is written to the scanning lines from the (2n + 1) / 4th row to the 3n / 4th row, after the first predetermined time T1 has elapsed, the red organic EL 28 in the lighting region c is instructed to be lit. Then, after the second predetermined time T2 has elapsed, the red organic EL 28 in the lighting region c is instructed to be turned off. The timing at which the lighting region c emits red is represented by Rc, and similarly, the timing at which green is emitted is represented by Gc, and the timing at which blue is emitted is represented by Bc. Similarly, after writing the scanning lines from the (3n + 1) / 4th row to the nth row, after the first predetermined time T1, the red organic EL 28 in the lighting region d is instructed to turn on, and the second predetermined time T2 After the elapse of time, the red organic EL 28 in the lighting area d is instructed to be turned off. The timing at which the lighting region d emits red light is represented by Rd. Similarly, the timing at which green light is emitted is represented by Gd, and the timing at which blue light is emitted is represented by Bd.

  As a result, the lighting areas a, b, c, and d are all lit for the same time (T2-T1) to form an image, thereby reducing uneven brightness between the lighting areas a, b, c, and d. be able to. Further, by causing the organic EL to emit light at a timing after the liquid crystal responds to the scanning signal and turning off the organic EL after a predetermined time has elapsed, unnecessary light emission can be eliminated and power saving can be achieved.

  Next, the Example which increased the lighting area | region in a planar light-emitting device is described using FIG. In addition, about the component same as the component demonstrated in FIG. 1, the same number is attached | subjected and description is abbreviate | omitted. Although FIG. 1 shows an embodiment in which the lighting regions a, b, c, and d that emit light emitted from the organic EL are arranged in four stages, the present invention is not limited to four stages, and is shown in FIG. As in the flat light emitting device 120, more stages may be arranged.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Sectional drawing of the liquid crystal display device using the planar light-emitting device of this invention. The figure which shows the drive timing of a liquid crystal display element, and the light emission timing of each lighting area | region in a planar light-emitting device. The external appearance perspective view explaining embodiment which increased the lighting area of the plane light-emitting device. Sectional drawing of the liquid crystal display device provided with the conventional direct type flat light-emitting device.

Explanation of symbols

10, 910 Liquid crystal display device 20, 120, 920 Flat light emitting device 22 Glass substrate 24 Blue organic EL
26 Green organic EL
28 Red organic EL
30 Insulating film 32 Reflecting film 34 Cap 70, 970 Liquid crystal display element 72, 92, 972, 992 Polarizing plate 84, 984 Liquid crystal layer 74, 90, 974, 990 Glass substrate 76, 976 Pixel electrode 88, 988 Common electrode 930 LED light source 934 LED substrate 964 Diffusing member 966X, 966Y Prism sheet 968 Compensation plate a, b, c, d Lighting area E Reset time R Write time

Claims (6)

  A flat light-emitting device, wherein a plurality of rectangular lighting areas for emitting light emitted from an organic EL from the entire surface are arranged, and each of the lighting areas is turned on and off independently.   The planar light emitting device according to claim 1, wherein the organic EL is formed by stacking a plurality of colors of organic EL layers, and each lighting region is turned on / off independently of a plurality of types of single colors. .   The planar light emitting device according to claim 2, wherein the organic EL has a configuration in which a blue organic EL layer, a green organic EL layer, and a red organic EL layer are stacked in this order from the light emitting surface toward the lower layer. A planar light emitting device in which a plurality of rectangular lighting areas that emit light emitted from the organic EL from the entire surface are arranged, and each lighting area is turned on and off independently;
A signal electrode and a pixel formed by a scanning electrode parallel to one side of the lighting region, and a display element that blocks light emitted from each lighting region of the planar light emitting device for each pixel.
A display device comprising: sequentially turning on / off each of the plurality of lighting regions in synchronization with a scanning signal applied to a scanning electrode of a pixel that shields the lighting region. A plurality of rectangular lighting areas that emit light emitted from the stacked organic EL layers of the plurality of colors from the entire surface are arranged in a plurality of stages, and each lighting area is independently turned on and off by sequentially time-dividing a plurality of types of single colors. A planar light emitting device,
A display element that includes a pixel formed by a scanning electrode parallel to a signal electrode and one side of the lighting region, and that blocks light emitted from each lighting region of the planar light emitting device for each pixel;
A driver that sequentially turns on and off the lighting regions of the plurality of stages in synchronization with a scanning signal applied to a scanning electrode of a pixel that blocks the lighting region for each of the plurality of types of single colors. Characteristic display device.   The driver turns on the lighting regions of the plurality of stages after a first predetermined time elapses from the start of application of a scanning signal to a pixel that blocks the lighting regions, and turns off the light after a second predetermined time elapses. Item 6. The display device according to Item 5.

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