JP2007094330A - Display method of display device, display device and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display method of a display device with which a display is performed with emission luminance larger than white balance adjustment luminance even when the maximum emission luminance of individual colors is restricted by white balance and display modes of an image are increased to expand use of the display device in the display device having a color filer; and also to provide a display device and electronic equipment. <P>SOLUTION: On a display panel, the color filter having a first color conversion layer for performing color conversion to monochromatic light from the respective emission elements to display a speedometer screen and a green color conversion layer for displaying special mark display by converting white monochromatic light from the respective emission elements into green are arranged. Then, video data D formed by adding luminance mode data to luminance data for determining emission luminance of the respective emission elements which emit light in the same color is supplied to a display area. Emission control is performed to the respective emission elements 9R, 9G, 9B based on the luminance mode data. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a display method for a display device, a display device, and an electronic apparatus.

  In recent years, organic EL panels using organic electroluminescence (hereinafter referred to as “organic EL”) elements are attracting attention as being superior to other display devices in terms of light weight, high luminance, high viewing angle, and high contrast ratio ( For example, see Patent Document 1). An organic EL display device using such an organic EL panel is known. By the way, the organic EL display device is shipped with a unique white balance set for each manufacturer or purpose of use. Therefore, the white balance is adjusted before shipment.

The white balance is determined by the luminance ratio of the emission luminance of the red light emitting element that emits red light, the green light emitting element that emits green light, and the blue light emitting element that emits blue light. In general, the luminance ratio is adjusted by adjusting the power supply voltage supplied to the light emitting elements of each color. However, the power supply voltage to be supplied is not uniquely determined relative to the luminance ratio. Since the light emission characteristics are different for each light emitting element, the power supply voltage supplied to the light emitting elements for each color is set in consideration of the light emission characteristics. At this time, the power supply voltage supplied to the light emitting elements of each color is set in consideration of the maximum light emission luminance (for example, 100 candela).
JP 2004-127924 A

  By the way, the light emitting element is a light emitting element that emits monochromatic light (for example, white light), and is provided with a color filter so as to face the display area of the display panel on which each light emitting element is formed. In the display device in which the monochromatic light converted into red, green and blue light is displayed to display a color image, the maximum light emission luminance of the light emitting elements of the respective colors is a power supply voltage when set by white balance. It will be decided. For example, as a result of adjusting the white balance, for example, when the luminance ratio of green light is small and the luminance ratio of red and blue light is small, the maximum emission luminance of other red and blue is It becomes smaller than the maximum light emission luminance. That is, although it has the ability to emit light with high luminance, it was not possible to emit light with higher luminance.

  Therefore, for example, when displaying a full-color image with normal brightness at normal times and displaying an image with green and high brightness at special times, there is a limit to displaying high-brightness with a green color. It was. In addition, there is a limit to performing full-color display in an area in the display area of the display panel and monochromatic high-intensity display in other areas.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a white balance even if the maximum light emission luminance of each color is limited by white balance in a display device including a color filter. It is an object to provide a display method, a display device, and an electronic apparatus for a display device that can perform display with a light emission luminance higher than the adjustment luminance, increase the display mode of an image, and expand the application of the display device.

The display method of the display device according to the present invention includes a display panel in which pixels having light emitting elements that emit monochromatic light are formed at positions corresponding to intersections of a plurality of scanning lines and a plurality of data lines, and the display Red, green, and blue that are arranged facing the panel and convert to red, green, and blue light for displaying a color image with monochromatic light emitted from light emitting elements of a plurality of pixels of the display panel And a second region having a conversion layer for converting monochromatic light emitted from light emitting elements of a plurality of pixels of the display panel into monochromatic light for displaying a monochromatic image. A color filter having a region, generating a data signal to be supplied to the pixel via the data line based on luminance data for the pixel from an external device, and generating a light emitting element of the pixel for each pixel Data signal Accordingly, in a display method of a display device that emits light and displays an image through the color filter, the light emitted from the first region of the color filter with respect to the same luminance data is displayed in the display panel. The light emitting elements of the pixels in the second region are caused to emit light so that the adjustment luminance of light emitted from the second region is larger than the white balance adjustment luminance.

  According to this, in a display device including a color conversion layer that converts the color of the monochromatic light and a color filter that emits the monochromatic light without being converted as it is, a pixel having a light emitting element that emits the monochromatic light is formed. A region that emits light with an adjustment brightness larger than the white balance adjustment brightness for the same brightness data can be formed in the display panel. As a result, the display mode of an image can be increased and the use of a display apparatus can be expanded.

  In this display device display method, conversion data is added to luminance data from the external device, the luminance data is converted to the new luminance data based on the added conversion data, and the new luminance data is used. Thus, the light emitting element of each pixel in the second region may emit light with a luminance greater than the luminance of the luminance data.

  According to this, the luminance data for the light emitting element of each pixel in the second region is made to emit light with a light emission luminance higher than the maximum light emission luminance preset for each light emitting element for each color conversion layer for red, green, and blue. Is converted into new luminance data. Then, the light emitting element of each pixel in the second region emits light with luminance based on the new luminance data. Therefore, the light emitting element of each pixel in the second region can emit light with high luminance without being limited to the preset maximum light emission luminance. As a result, the display mode of an image can be increased and the use of a display apparatus can be expanded.

  In this display device display method, it is determined whether the luminance data output from the external device is luminance data for the light emitting elements of the pixels in the second region, and the light emitting elements of the pixels of the second region are determined. When the brightness data is determined to be the brightness data, the brightness data is changed to new brightness data that emits light at a brightness higher than the light emission brightness with respect to the brightness data, and the light emitting elements of the pixels in the second region are caused to emit light based on the new brightness data. You may do it.

  According to this, the luminance data output from the external device is output from the external device by determining whether the luminance data is for the light emitting element of each pixel in the region that emits light with the adjustment luminance larger than the white balance adjustment luminance. It is not necessary to perform processing such as adding data for changing to the new luminance data to the luminance data itself. As a result, an existing external device can be used.

  In the display method of the display device, the power supply voltage supplied to the light emitting element of each pixel may be larger than a power supply voltage determined by a preset brightness ratio for white balance.

  According to this, since a power supply voltage larger than the power supply voltage determined by the brightness ratio for white balance is supplied to each light emitting element, in order to cause the light emitting element to emit light with a light emission brightness larger than the white balance adjustment brightness. Even when the data signal is supplied, the current (drive current) supplied to the light emitting element does not saturate. As a result, the light emitting element can emit light with a light emission luminance greater than the white balance adjustment luminance.

In the display method of the display device, the image displayed on the display panel may be a vehicle information image that notifies vehicle information of the vehicle.
According to this, by using the light-emitting element in the area for displaying a so-called special mark such as a vehicle left / right direction indicator lamp or a seat belt indicator lamp, the special mark is larger than the white balance adjustment luminance. Light can be emitted with adjusted brightness. As a result, it is possible to increase the visibility of the special mark by increasing the display mode of the image and expanding the application of the display device, and to ensure that the driver driving the vehicle can visually recognize the display of the special mark. It becomes.

In the display method of the display device, the light emitting element may be an electroluminescence element.
According to this, in the display device provided with the electroluminescence element as the light emitting element, the light emitting element in the region in the display panel can emit light with the adjustment brightness larger than the white balance adjustment brightness.

  The display device of the present invention has a display panel in which pixels having light-emitting elements that emit monochromatic light are formed at positions corresponding to intersections of a plurality of scanning lines and a plurality of data lines, and is opposed to the display panel. For red, green for converting monochromatic light emitted from light emitting elements of a plurality of pixels of the display panel into red light, green light, and blue light for displaying a color image, A first region having each color conversion layer for blue, and a conversion layer for converting to monochromatic light for displaying a monochromatic image with monochromatic light emitted from light emitting elements of a plurality of pixels of the display panel. A color filter having two regions, luminance ratio setting means for setting each emission luminance ratio of the red light, green light, and blue light, and the data line based on luminance data for the pixel from an external device To the light emitting element of the pixel And a data signal generating means for outputting a data signal that emits light at a light emission luminance relative to the luminance data, wherein the first region of the color filter is applied to the same luminance data in the display panel. Control means for causing the light emitting elements of the pixels in the second region to emit light so that the adjustment luminance of the light emitted from the second region is larger than the white balance adjustment luminance of the light emitted from the second region.

  According to this, in a display device including a color conversion layer that converts the color of the monochromatic light and a color filter that emits the monochromatic light without being converted as it is, a pixel having a light emitting element that emits the monochromatic light is formed. A region that emits light with an adjustment brightness larger than the white balance adjustment brightness for the same brightness data can be formed in the display panel. As a result, the display mode of an image can be increased and the use of a display apparatus can be expanded.

  In this display device, the control means extracts extraction means for extracting luminance conversion data added to the luminance data for the light emitting elements of each pixel in the second region, and the first means based on the extracted luminance conversion data. Data conversion means for converting the luminance data of the light emitting elements of each pixel in each of the two regions into new luminance data for emitting light with a luminance higher than the luminance for the luminance data and outputting the new luminance data to the data signal generating means may be provided. .

  According to this, the luminance data for the light emitting elements of each pixel in a predetermined area in the display panel is for emitting light with a light emission luminance larger than the white balance adjustment luminance preset for each light emitting element that emits light of each color. It is converted into new luminance data. Then, the light emitting element of each pixel in the region emits light with luminance based on the new luminance data. Therefore, the light emitting element of each pixel in the predetermined region can emit light with high light emission luminance without being limited to the preset white balance adjustment luminance. As a result, the display mode of an image can be increased and the use of a display apparatus can be expanded.

  In this display device, the control means includes a counting means for counting a synchronization signal of luminance data output from the external device, and luminance data output together with the synchronization signal based on a count value of the counting means, Determining means for determining whether or not the luminance data is for a light emitting element of each pixel in the second area; and when the determining means determines that the luminance data is for a light emitting element of each pixel in the second area, the luminance data Brightness data generating means for outputting new brightness data for emitting light with a light emission brightness greater than the light emission brightness for the external device, and when the determination means determines the brightness data for the light emitting element of each pixel in the second area, Instead of the luminance data from the luminance data selected from the new luminance data output from the luminance data generating means and output to the data signal generating means A, and a chromatography data selection means.

  According to this, the luminance data output from the external device is output from the external device by determining whether the luminance data is for the light emitting element of each pixel in the region that emits light with the adjustment luminance larger than the white balance adjustment luminance. It is not necessary to perform processing such as adding data for changing to the new luminance data to the luminance data itself. As a result, an existing external device can be used.

In this display device, the image displayed on the display panel may be a vehicle information image that notifies vehicle information of the vehicle.
According to this, by using the light-emitting element in the area for displaying a so-called special mark such as a vehicle left / right direction indicator lamp or a seat belt indicator lamp, the special mark is larger than the white balance adjustment luminance. Light can be emitted with adjusted brightness. As a result, it is possible to increase the visibility of the special mark by increasing the display mode of the image and expanding the application of the display device, and to ensure that the driver driving the vehicle can visually recognize the display of the special mark. It becomes.

In this display device, the light emitting element may be an electroluminescence element.
According to this, in the display device provided with the electroluminescence element as the light emitting element, the light emitting element in the region in the display panel can emit light with the adjustment brightness larger than the white balance adjustment brightness.

The display device of the present invention includes the display device described above.
According to this, it is possible to provide an electronic apparatus including a display device that can emit light with an adjustment brightness larger than the white balance adjustment brightness.

(First embodiment)
Hereinafter, a first embodiment in which the present invention is embodied in an in-vehicle display device will be described with reference to the drawings.
As shown in FIG. 1, an in-vehicle display device (hereinafter simply referred to as “display device”) 1 of the present embodiment is mounted on an instrument panel W as an electronic device of a vehicle C. The display device 1 displays a screen F for notifying the driver of information related to the driving state of the vehicle C in the display area H.

  As shown in FIG. 2, the screen F displays a speedometer image F1 as a vehicle information image representing the vehicle speed in the center of the display area H and various special mark displays F2 around the speedometer image F1. In the speedometer image F1, numerical values Ma indicating the vehicle speed of the vehicle C of “0”, “20”, “40”,..., “180” are displayed at predetermined intervals. In the speedometer image F1, a pointer Mb is displayed at a position surrounded by each numerical value Ma. The pointer Mb is rotated and displayed with the base end Mc as a rotation center according to the vehicle speed of the vehicle C at that time, and the vehicle speed at that time is indicated.

  The special mark display F2 is not a so-called moving image that changes its display position from time to time, like the pointer Mb of the speedometer image F1, but is an image that is turned on or off in a single color. These are the indicator lights F2a and F2b and the seat belt indicator lamp F2c. Incidentally, the left direction indicator lamp F2a is disposed at the upper left end portion in the display area H, and the right direction indicator lamp F2a is disposed at the upper right end portion in the display area H. The seat belt indicator lamp F2c is disposed at the lower right end of the display area H. Further, the left / right direction indicator lamps F2a and F2b and the seat belt indicator lamp F2c are displayed in a single white color.

  In the present embodiment, the speedometer image F1 is in a luminance display mode for moving images, and each organic EL element 9 (each pixel 8) has a light emission luminance based on a predetermined white balance adjustment luminance. ) Emits light (first luminance display mode). On the other hand, the special mark display F2 is a luminance display mode in which the emission luminance is turned on and blinked, and the emission luminance in the speedometer image F1 (each organic EL element 9 (each pixel 8) is displayed). Any one of the organic EL elements 9 (each pixel 8) emits light alone with a larger light emission luminance (second luminance display mode). That is, the display area H of the display device 1 includes a pixel area for displaying the speedometer image F1 in the first luminance display mode and a specific area (monochromatic display area) for displaying the special mark display F2 in the second luminance display mode. Pixel areas coexist.

As shown in FIG. 3, the display panel unit 2 of the display device 1 includes a display panel 4 and a color filter 5.
As shown in FIG. 4, the display area 4 has the display area H defined at the substantial center thereof. In the display area H, n scanning lines LY1 to LYn are formed in the row direction (X arrow direction in FIG. 3), and in the column direction (Y in FIG. 3) so as to intersect each scanning line LY1 to LYn. M data lines LX1 to LXm are formed in the direction of the arrow.

  Further, the display area H includes pixels 8 that emit monochromatic light at positions corresponding to the intersections of the scanning lines LY1 to LYn and the data lines LX1 to LXm. Furthermore, in the display area H, three types of first to third power supply lines LoR, LoG, LoB are formed in parallel to the data lines LX1 to LXm. The first power supply line LoR is wired to the first column, the fourth column,..., Counted from the n pixels 8 group arranged along the column direction (Y arrow direction in FIG. 4) at the left end of the display area H. The second power supply line LoG is the second, fifth,..., Counting from the group of n pixels 8 arranged at the left end of the display area H along the column direction (Y arrow direction in FIG. 4). Wired to The third power supply line LoB is the third, sixth,..., M from the n groups of 8 pixels arranged along the column direction (Y arrow direction in FIG. 4) at the left end of the display area H. It is wired in the column. The first power supply line LoR is supplied with the first power supply voltage VR, the second power supply line LoG is supplied with the second power supply voltage VG, and the third power supply line LoB is supplied with the third power supply voltage VB. ing. The magnitudes of the first to third power supply voltages VR, VG, and VB are controlled so that the light emission luminance of each pixel 8 changes for each pixel 8 arranged along the column direction.

  FIG. 5 is a circuit diagram showing an electrical configuration of each pixel 8 formed in the display area H. As shown in FIG. In FIG. 5, each pixel 8 has an organic EL element 9 having a light emitting layer made of an organic material as an electro-optical element. And the light emitting element 9 of this embodiment is an electroluminescence (EL) element which radiate | emits white light (monochromatic light), Comprising: The light emitting layer is comprised with the low molecular material.

  Each pixel 8 includes a driving transistor Qd, a switching transistor Qsw, and a holding capacitor C1. The drive transistor Qd and the switching transistor Qsw are composed of N-channel TFTs.

  The drive transistor Qd of each pixel 8 has a source connected to the anode of the organic EL element 9 and a drain connected to the corresponding first to third power supply lines LoR, LoG, LoB. For convenience of description, when distinguishing the pixels 8, each pixel 8 connected to the first power supply line LoR is hereinafter referred to as the first pixel 8, and each pixel 8 connected to the second power supply line LoG is referred to as the second pixel 8. Each pixel 8 connected to the third power supply line LoB is referred to as a third pixel 8.

  A holding capacitor C1 is connected between the gate of the driving transistor Qd and each power line LoR, LoG, LoB. The gates of the switching transistors Qsw are connected to the corresponding scanning lines LY1 to LYn, respectively. The switching transistor Qsw has a drain connected to the data lines LX1 to LXm, and a source connected to the gate of the driving transistor Qd and the holding capacitor C1.

  Among the data lines LX1 to LXm, the first data line LX1, the fourth data line LX4,..., And the m-2th data line LXm-2 have red data signals DX1, DX4,. Supplied. Further, green data signals DX2, DX5,..., DXm-1, which will be described later, are supplied to the second data line LX2, the fifth data line LX5,. Further, blue data signals DX3, DX6,..., DXm, which will be described later, are supplied to the third data line LX3, the sixth data line LX6,.

  Accordingly, the switching transistor Qsw of the first pixel 8 is connected to the first data line LX1, the fourth data line LX4,..., The m-2th data line LXm-2. Further, the switching transistor Qsw of the second pixel 8 is connected to the second data line LX2, the fifth data line LX5,..., The m−1th data line LXm−1. Further, the switching transistor Qsw of the third pixel 8 is connected to the third data line LX3, the sixth data line LX6,..., And the mth data line LXm.

  The first power supply voltage VR, the second power supply voltage VG, and the third power supply voltage VB are independently supplied to the first to third power supply lines LoR, LoG, and LoB. The first power supply line LoR supplies the first power supply voltage VR to the first pixel 8, the second power supply line LoG supplies the second power supply voltage VG to the second pixel 8, and the third power supply line LoB supplies the first power supply voltage LoB. The third power supply voltage VB is supplied to the three pixels 8.

  As described above, the first power supply voltage VR supplied to each first power supply line LoR, the second power supply voltage VG supplied to each second power supply line LGo, and the third power supply voltage supplied to each third power supply line LoB. VB is set to a value larger than the voltage value in the white balance set in the first luminance display mode. That is, when each light emitting element emits light in the second luminance display mode, the current value flowing through the light emitting element 9 is set so as not to be saturated relative to the luminance data in the second luminance display mode. In other words, the first to third power supply voltages VR, VG, and VB are capable of high-intensity monochromatic display with respect to the luminance data in the second luminance display mode while considering the white balance with respect to the luminance data in the first luminance display mode. Is set to an appropriate voltage value.

  As shown in FIG. 3, the color filter 5 is disposed to face the display area H of the display panel 4. The color filter 5 includes a first color conversion layer C1 for displaying a color image and a second color conversion layer C2 for displaying a single color image.

  The first color conversion layer C1 is a color conversion layer that converts white monochromatic light emitted from the pixels 8 into red, green, and blue light. In the present embodiment, a red transparent colored layer (red colored layer) 6R as a red color conversion layer colored in red, and a green transparent colored layer (green) as a green color conversion layer colored in green For colored layer) 6G and a transparent colored layer for blue (colored layer for blue) 6B as a blue color conversion layer colored in blue.

  6 is a schematic cross-sectional view of the color filter 5 taken along line AA in FIG. As shown in FIG. 6, the black color layer 6R, the green color layer 6G, the blue color layer 6B, and the second color conversion layer C2 include the black matrix layer BM between other adjacent layers. Is formed. As shown in FIG. 3, the red coloring layer 6R, the green coloring layer 6G, and the blue coloring layer 6B of the first color conversion layer C1 are arranged at positions facing the center of the display area H. . As shown in FIG. 6, the red coloring layer 6 </ b> R is a color conversion layer that converts the white light LW emitted from the light emitting element 9 into a red light LR and transmits it. The green transparent colored layer 6G is a color conversion layer that converts the white light LW emitted from the light emitting element 9 into green light LG and transmits it. The blue transparent colored layer 6B is a color conversion layer that converts the white light LW emitted from the light emitting element 9 into a blue light LB and transmits it. The red coloring layer 6R is disposed to face the first pixel 8, the green coloring layer 6G is opposed to the second pixel 8, and the blue coloring layer 6B is opposed to the third pixel 8. Then, a set of color pixels is constituted by three pixels 8 each including the red coloring layer 6R, the green coloring layer 6G, and the blue coloring layer 6B adjacent in the row direction.

  In the color filter 5, the first color conversion layer C1 includes pixels 8 in a region (first region) excluding a region (second region) where the pixel 8 for displaying the special display mark F2 shown in FIG. 2 is formed. Are formed to face each other. Therefore, the speedometer image F1 is obtained from the light emitting elements 9 of the respective pixels 8 arranged at positions facing the red, green and blue coloring layers 6R, 6G, 6B of the first color conversion layer C1 of the color filter 5. The emitted green monochromatic light is converted into red, green, and blue light, respectively, and a color image is formed by combining the light of each color.

  As shown in FIG. 6, the second color conversion layer C2 is a color conversion layer that converts the white light LW emitted from the light emitting element 9 into a green light LG and transmits it. The second color conversion layer C2 is formed to face the pixel 8 in the area (second area) for displaying the special mark display F2 shown in FIG. Accordingly, the special mark display F2 (the left and right direction indicating lamps F2a and F2b and the seat belt display lamp F2c) is a light emitting element of each pixel 8 arranged at a position facing the second color conversion layer C2 of the color filter 5. The white monochromatic light emitted from 9 becomes a monochromatic image formed as green light.

Next, the electrical configuration of the display device 1 will be described with reference to FIG.
The display device 1 includes a panel module PA and a panel control unit PB.
The panel module PA includes a display panel unit 2, a scanning line driving circuit 11, and a data line driving circuit 12 as data signal generating means.

  The scanning line driving circuit 11 is connected to the scanning lines LY1 to LYn. Each scanning line driving circuit 11 is connected to the scanning lines LY1 to LYn, and each of the scanning lines LY1 to LYn, for example, first scanning line LY1 → second scanning line LY2 →... → nth scanning line LYn → A scanning signal to be selected in the order of the first scanning line LY1 →... Is generated. Thus, each pixel 8 on the display area H is sequentially selected for each of the plurality of pixels 8 arranged along the row direction.

  The data line driving circuit 12 is connected to data lines LX1 to LXm formed in the display area H. As shown in FIG. 8, the data line driving circuit 12 has the same number of data lines LX1 to LXm, that is, m digital / analog conversion circuits (hereinafter referred to as DA conversion circuits) 12a1, 12a2, 12a3, ..., 12am. Each of the DA conversion circuits 12a1 to 12am is a known digital / analog conversion circuit, and is an 11-bit current output type digital / analog conversion circuit in the present embodiment. Each DA converter circuit 12a1 to 12am includes 11 current sources (not shown) for outputting a current weighted corresponding to each 11-bit value.

The DA conversion circuits 12a1 to 12am receive red, green and blue converted video data RVD, GVD and BVD and red, green and blue reference voltages ER, EG and EB. Red conversion video data (hereinafter referred to as red video data) RVD is supplied to DA conversion circuits 12 a 1, 12 a 4,... Corresponding to the first pixel 8. The red video data RVD is 11-bit bit data, and on / off control of each of the 11 current sources provided in the DA conversion circuits 12a1, 12a4,. Then, the sum of the currents output from the turned-on current sources becomes red data signals DX1, DX4,... And is output to the corresponding data lines LX1, LX4,.

Similarly, the converted video data for green (hereinafter referred to as green video data) GVD is the second pixel 8.
Are supplied to DA conversion circuits 12a2, 12a5,. The green video data GVD is 11-bit bit data, and the 11 current sources provided in the DA conversion circuits 12a2, 12a5,... Are turned on / off according to the bit values. Then, the sum of the currents output from the turned-on current sources becomes the green data signals DX2, DX5,... And is output to the corresponding data lines LX2, LX5,.

Similarly, blue converted video data (hereinafter referred to as blue video data) BVD is supplied to DA conversion circuits 12a3, 12a6,..., 12am corresponding to the third pixel 8. This blue video data BVD is 11-bit digital data, and the 11 current sources provided in the DA conversion circuits 12a3, 12a6,..., 12am are turned on / off according to the bit values. To do. Then, the sum of the currents output from the turned-on current sources becomes blue data signals DX3, DX6,..., DXm, which are output to the corresponding data lines LX3, LX6,.

Incidentally, in the present embodiment, each video data RVD, GVD, and BVD is the lower 8 bits of the 11-bit bit data when each organic EL element 9 emits light in the first luminance display mode. When the light emission is controlled and each organic EL element 9 emits light in the second luminance display mode, the light emission is controlled by 11-bit bit data.

The reference voltages ER, EG, and EB for red, green, and blue are voltages for determining reference values of the data signals DX1 to DXm generated by the DA conversion circuits 12a1 to 12am. The red reference voltage ER is supplied to DA conversion circuits 12a1, 12a4,... That generate the red data signals DX1, DX4,. The green reference voltage EG is supplied to DA conversion circuits 12a2, 12a5,... That generate the green data signals DX2, DX5,. The blue reference voltage EB is supplied to DA conversion circuits 12a3, 12a6,... 12am that generate the blue data signals DX3, DX6,.

  As shown in FIG. 7, the panel control unit PB includes an EEPROM 15, a panel control circuit 16, a control circuit, a control unit, a data conversion unit and a data calculation circuit unit 17 as an extraction unit, a reference voltage generation circuit 18, and a luminance ratio setting unit. The power supply circuit 19 is provided.

The EEPROM 15 stores various reference voltage setting data DER, DEG, DEB for creating the red, green, and blue reference voltages ER, EG, EB.
The panel control circuit 16 reads predetermined reference voltage setting data DER, DEG, DEB from the EEPROM 15 according to the control data, and outputs the read predetermined reference voltage setting data DER, DEG, DEB to the reference voltage generation circuit 18. This control data is input data in accordance with an input signal input from an input means (not shown) according to the driving state of the vehicle C. For example, when the vehicle is traveling at night, the driver can image When it is desired to brighten F as a whole, the input data is input by the driver operating an input means (not shown).

The reference voltage generation circuit 18 performs analog conversion on the reference voltage setting data DER, DEG, DEB extracted by the panel control circuit 16 to generate red, green, and blue reference voltages ER, EG, EB. Then, the reference voltage generation circuit 18 outputs the red, green, and blue reference voltages ER, EG, and EB to the DA conversion circuits 12 a 1 to 12 am of the data line driving circuit 12.

As shown in FIG. 7, the data arithmetic circuit unit 17 inputs video data D, a data clock DCLC, and a frame clock FCLC from an external device GS provided outside the display device 1.
As shown in FIG. 2, the video data D is data for displaying the speedometer image F <b> 1 and the special mark display F <b> 2 in the display area H of the display device 1. FIG. 9 shows the data structure of the video data D for one pixel 8 (organic EL element 9). In FIG. 9, the video data D is composed of 10 bits, and the lower 8-bit bit value “A8, A7, A6, A5, A4, A3, A2, A1” is the luminance data Da, and the upper 2-bit bit value. “B2, B1” is assigned to the luminance mode data Db. That is, the video data D is data obtained by adding 2-bit luminance mode data Db to 8-bit luminance data Da.

  The 8-bit luminance data Da is normal light emission luminance data for causing the pixel 8 (organic EL element 9) to emit light in normal luminance display, in the first luminance display mode in this embodiment. The bit value “B2, B1” of the luminance mode data Db determines whether or not the pixel 8 (organic EL element 9) emits light in the first luminance display mode or the second luminance display mode, and the second luminance display mode. In this case, the mode data determines one of the three types of high luminance modes. In this embodiment, the 2-bit luminance mode data Db is “0, 0” in the first luminance display mode, “0, 1” in the second luminance display mode and the first high luminance mode, It is “1, 0” in the second luminance display mode and the second high luminance mode, and “1, 1” in the second luminance display mode and the third high luminance mode.

  In the present embodiment, in the display area H shown in FIG. 2, the luminance mode data Db for the first luminance display mode is set for the video data D of each pixel 8 belonging to the area for displaying the speedometer image F1. Yes. The video data D of each pixel 8 belonging to the area for displaying the special mark display F2 is set with the luminance mode data Db for the second luminance display mode (first, second or third high luminance mode). Yes.

  The data clock DCLC is a synchronization signal for recognizing that the video data D of one pixel 8 has been input. The frame clock FCLC is a signal for recognizing that the continuously input video data D is segmented for each frame.

The data operation circuit unit 17 extracts the upper 2 bits of luminance mode data Db of the 10 bits of video data D for each pixel 8 input in synchronization with the data clock DCLC and determines the display mode. Then, the data operation circuit unit 17 converts the lower 8 bits of luminance data Da in accordance with the luminance mode data Db as shown in FIG. 9 to convert 11 bits of converted video data RVD.
, GVD, and BVD are output to the DA conversion circuits 12a1 to 12am of the data line driving circuit 12.

  That is, as shown in FIG. 10, when the luminance mode data Db is “0, 0” (first luminance display mode), the lower 8-bit luminance data Da is used as it is as the lower 8 bits and the upper 3 bits are set to “0, 0”. , 0 "is output as converted video data RVD, GVD, BVD.

When the luminance mode data Db is “0, 1” (first high luminance mode), the lower 8 bits of luminance data Da are shifted one bit higher, the upper 2 bits are “0, 0”, and the lower 1 bit. Is converted to converted video data (first converted video data) RVD, GVD, and BVD.

Further, when the luminance mode data Db is “1, 0” (second high luminance mode), the lower 8-bit luminance data Da is shifted upward by 2 bits, the upper 1 bit is “0”, and the lower 2 bits are “ The converted video data (second converted video data) RVD, GVD, BVD set to “0, 0” is output. Therefore, in the case of the second high luminance mode, the luminance data Da is converted into converted video data RVD, GVD, and BVD having a light emission luminance higher than that in the first high luminance mode.

Furthermore, when the luminance mode data Db is “1, 1” (third high luminance mode), the lower 8 bits of luminance data Da are shifted higher by 3 bits and the lower 3 bits are changed to “0, 0, 0”. The converted video data (third converted video data) RVD, GVD, and BVD are output. Therefore, the third
In the case of the high luminance mode, the luminance data Da is converted into converted video data RVD, GVD, and BVD that have a light emission luminance greater than that in the second high luminance mode.

Further, the data operation circuit unit 17 outputs the data clock DCLC and the frame clock FCLC to the panel control circuit 16. Then, the panel control circuit 16 outputs a driving signal to the scanning line driving circuit 11 and the data line driving circuit 12 based on the data clock DCLC and the frame clock FCLC from the data arithmetic circuit unit 17. That is, the scanning line driving circuit 11 outputs a scanning line driving signal for the scanning line driving circuit 11 to sequentially select the scanning lines LY1 to LYn. The data line driving circuit 12 sequentially outputs the converted video data RVD, GVD, and BVD to the DA conversion circuits 12a1 to 12am of the data line driving circuit 12, and the DA conversion circuits 12a1 to 12a1.
Data line drive signals for outputting the data signals DX1 to DXm all at once from 12am are output.

  The power supply circuit 19 inputs an external power supply Vin. The power supply circuit 19 generates first to third power supply voltages VR, VG, and VB based on the input external power supply Vin. The power supply circuit 19 considers the white balance for the luminance data in the first luminance display mode, and can perform first to third power supply voltages VR, VG, and so on capable of high luminance single color display for the luminance data in the second luminance display mode. VB is generated. The power supply circuit 19 according to the present embodiment allows the drive current to flow through each organic EL element 9 even when the light emission brightness is at least four times larger than the white balance adjustment brightness of each organic EL element 9 with respect to the brightness data in the first brightness display mode. Is set in advance so as to generate first to third power supply voltages VR, VG, and VB that are not saturated. Then, the power supply circuit 19 outputs the generated first to third power supply voltages VR, VG, and VB to the display panel 2.

Next, the operation of the display device 1 will be described with reference to the flowchart showing the operation of the data arithmetic circuit unit 17 shown in FIG.
Now, when the operation key is inserted into the key cylinder in the driver's seat and the engine is started, the display device 1 is powered on. Then, the data operation circuit unit 17 requests the panel control circuit 16 to supply the red, green, and blue reference voltages ER, EG, and EB to the data line driving circuit 12. When the panel control circuit 16 supplies the reference voltage ER, EG, EB for red, green, and blue to the data line driving circuit 12 from the reference voltage generation circuit 18 based on a request from the data arithmetic circuit unit 17, that effect is indicated. The response signal is output to the data arithmetic circuit unit 17. Further, the data operation circuit unit 17 receives the video data D in synchronization with the data clock DCLC from the external device GS and performs signal processing for displaying the screen F shown in FIG. 2 in the display area H of the display device 1. Start (steps S1-1 and S1-2). At this time, the power supply circuit 19 creates first to third power supply voltages VR, VG, and VB and outputs them to the display panel unit 2.

Then, when the data operation circuit unit 17 takes in the video data D for one pixel, it reads out the luminance mode data Db. When the luminance mode data Db is “0, 0”, the data operation circuit unit 17 outputs the luminance data Da as normal conversion video data RVD, GVD, BVD to the data line driving circuit 12 (step S1-4). . When the luminance mode data Db is “0, 1”, the data operation circuit unit 17 outputs the luminance data Da to the data line driving circuit 12 as the first converted video data RVD, GVD, BVD (step S1-5). ). Further, when the luminance mode data Db is “1, 0”, the data operation circuit unit 17 outputs the luminance data Da as the second converted video data RVD, GVD, BVD to the data line driving circuit 12 (step S1-6). )
. Furthermore, when the luminance mode data Db is “1, 1”, the data operation circuit unit 17 outputs the luminance data Da as the third conversion video data RVD, GVD, BVD to the data line driving circuit 12 (step S1- 7).

  When the conversion of the video data D of one pixel 8R, 8G, 8B is completed, the data arithmetic circuit unit 17 checks display off (running key off) (step S1-8), and then the next one The video data D of the pixels 8R, 8G, and 8B is captured, the same conversion is performed, and this is repeated to display the screen F shown in FIG. 2 in the display area H of the display panel unit 2.

  In this way, video data D for displaying the screen F shown in FIG. 2 is output from the external device GS to the display device 1. Then, the speedometer image F1 is displayed on the display panel unit 2 with the white balance adjustment luminance adjusted by the white balance, and the special mark display F2 is not limited to the white balance adjustment luminance, and the white balance adjustment luminance. Displayed with high emission brightness.

According to the said embodiment, there exist the following effects.
(1) According to the present embodiment, the first color for displaying the speedometer screen F1 by color-converting the monochromatic light from each light emitting element 9 at a position opposite to the display area H of the display panel 4. A color filter 5 having a conversion layer C1 and a second color conversion layer C2 for displaying a special mark display F2 by converting white light LW from each light emitting element 9 into green light LG is disposed. did.

  Therefore, the speedometer screen F1 can be displayed as a color image, and the left and right direction indicating display lamps F2a and F2b and the seat belt display lamp F2c as the special mark display F2 can be displayed as a single color image.

  (2) According to the present embodiment, the video data D in which the luminance mode data Db is added to the luminance data Da that determines the light emission luminance of each light emitting element 9 that emits light of the same color is supplied to the display area H. Also, based on the luminance mode data Db, new converted video data RVD, GVD, BVD for the light emitting element 9 is created, and the light emitting elements 9 are controlled to emit light based on the converted video data RVD, GVD, BVD. I made it.

  Therefore, the speedometer image F1 whose light emission is controlled (first luminance display mode) with the white balance adjustment luminance adjusted with the set white balance on one screen F, and the white balance adjustment luminance is not limited to the white balance adjustment luminance. It is possible to simultaneously display the special mark display F2 that has a light emission luminance (second luminance display mode) larger than the balance adjustment luminance.

  (3) According to the present embodiment, three types (first to third high luminance modes) can be selected for the second luminance display mode. Therefore, the special element display F2 can be displayed with high brightness by causing the light emitting element 9 to emit light with a light emission brightness that is twice, three times, or four times the white balance adjustment brightness. That is, when light is emitted in a single color of red, green, or blue, light can be emitted with a light emission luminance greater than the white balance adjustment luminance without being limited by the white balance adjustment luminance.

(4) According to this embodiment, the light emitting element 9 formed in each pixel 8 is an EL element that emits white light (monochromatic light), and the light emitting layer is made of a low molecular material. . Therefore, the light emitting layer of the light emitting element 9 can be formed using a vapor deposition method or a sputtering method. As a result, the display device 1 has different types of light emitting layers for each pixel, such as a light emitting element that emits red light to each pixel, a light emitting element that emits green light, and a light emitting element that emits blue light. Manufacture is easier compared to a display panel provided with

(5) According to the present embodiment, the screen F displayed in the display area H includes the speedometer image F1 as the vehicle information of the vehicle C, the left and right direction indication display lights F2a and F2b, and the seat belt display light F2c. Yes. The left / right direction indicator lamps F2a and F2b and the seat belt indicator lamp F2c are displayed with a light emission luminance higher than the maximum light emission luminance at the time of white balance adjustment. As a result, the visibility of the left and right direction indicating lamps F2a and F2b and the seat belt indicating lamp F2c is improved, and the display of the left and right direction indicating lamps F2a and F2b and the seat belt indicating lamp F2c is displayed to the driver who drives the vehicle. It can be surely visually recognized.
(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS.

In the present embodiment, the video data D for one pixel from the external device GS is composed of 8-bit luminance data Da to which no luminance mode data Db is added unlike the first embodiment. Therefore, in the present embodiment, in the data arithmetic circuit unit 17, each pixel 8 belonging to the area displaying the special mark display F2 for the video data D (8-bit luminance data Da) input in synchronization with the data clock DCLC. The video data D of (light emitting element 9) is found and specified. The data arithmetic circuit unit 17 generates special display video data corresponding to the converted video data RVD, GVD, and BVD of the first embodiment for the video data D of each specified pixel 8 (light emitting element 9), and the others. The video data D is output to the data line driving circuit 12 as it is.

  As shown in FIG. 12, the data operation circuit unit 17 includes a counter 21 as a counting unit, a determination unit, a data decoder 22 as a luminance data generation unit, and a luminance data selection unit, and a selector 23.

  The counter 21 receives the data clock DCLC and the frame clock FCLC. The counter 21 is an addition counter that adds and counts the data clock DCLC. The input value is reset every time the frame clock FCLC is input, and the data clock DCLC is added and counted again. That is, according to the count value of the counter 21, which pixel 8 (light emitting element 9) in the display area H corresponds to one pixel of video data D input to the data arithmetic circuit unit 17 in synchronization with the data clock DCLC. Recognize.

  The count value of the counter 21 is output to the data decoder 22. The data decoder 22 stores a plurality of preset setting values, and outputs a switching signal Ka and special display video data KD when the setting values match the count value. The plurality of set values are count values when the counter 21 counts each pixel 8 (light emitting element 9) belonging to the area displaying the special mark display F2. Further, the special display video data KD is luminance data for lighting and blinking the special mark display F2 in FIG. 2, and each red, green, and blue has a luminance higher than the emission luminance on the speedometer screen F1. Luminance data for causing each light emitting element 9 (each pixel 8) to emit light independently. The data decoder 22 switches when the video data D of the pixel 8 (organic EL element 9) in the area displaying the special mark display F2 is input to the data arithmetic circuit unit 17 based on the count value of the counter 21. A signal Ka and special video data KD are generated and output.

The switching signal Ka and the special video data KD are output to the selector 23. The selector 23 selects and outputs either the special video data KD or the video data D input in synchronization with the data clock DCLC. The selector 23 outputs the video data D (luminance data Da) to the data line driving circuit 12 when the switching signal Ka is not output, and the switching signal Ka.
Is output to the data line driving circuit 12.

Next, the operation of the display device 1 will be described according to the flowchart showing the operation of the data arithmetic circuit unit 17 shown in FIG.
The data operation circuit unit 17 inputs video data D in synchronization with the data clock DCLC from the external device GS and starts signal processing for displaying the screen F shown in FIG. 2 in the display area H of the display device 1. (Steps S2-1 and S2-2).

  When the data arithmetic circuit unit 17 takes in the video data D for one pixel together with the data clock DCLC (YES in step S2-2), the counter 21 in the data arithmetic circuit unit 17 performs an addition operation (step S2-3). Subsequently, the data decoder 22 compares the count value Ti of the counter 21 with a preset set value (step S2-4). If they do not match (NO in step S2-4), none of the data decoders 22 outputs to the selector 23. Therefore, the selector 23 outputs the video data D input in synchronization with the data clock DCLC to the data line driving circuit 12 as it is (step S2-5).

  On the other hand, if they match (YES in step S2-4), the data decoder 22 outputs the switching signal Ka and the special video data KD to the selector 23 (step S2-6). Then, the selector 23 outputs the special video data KD to the data line driving circuit 12 based on the switching signal Ka (step S2-7).

  When the processing for the video data D of one pixel 8 is completed, the data operation circuit unit 17 checks the display off (operation key off) (step S2-8), and then the video of the next one pixel 8 2 is displayed in the display area H of the display panel unit 2 by performing the same conversion as the capturing of the data D and repeating this. When the frame clock FCLC for image display for the next one frame from which the video data D for the pixel 8 for one frame is output is input, the counter 21 is reset and starts counting again. (Step S2-9).

  As described above, also in the present embodiment, when the video data D for displaying the screen F shown in FIG. 2 is output from the external device GS to the display area H, the speedometer image F1 is displayed on the display panel unit 2. While displaying with normal white balance adjustment luminance, the special mark display F2 is displayed with high luminance without being limited to white balance adjustment luminance.

According to the said embodiment, there exist the following effects.
(1) According to the present embodiment, as in the first embodiment, in the display device 1 including the color filter 5, the light emission control (first luminance display mode) is performed on the single screen F with the set white balance adjustment luminance. ) And the special mark display F2 that is controlled to emit light with high brightness (second brightness display mode) without being limited to the white balance adjustment brightness.
(2) According to the present embodiment, the luminance and display area (specific area) of the special mark display F2 that is controlled to emit light with high luminance (second luminance display mode) are the display device 1, that is, the data calculation circuit unit 17. The data decoder 22 can be preset. For this reason, since it is not necessary to process the video data D in the external device GS as in the first embodiment, it can be easily assembled in the existing external device GS.

In addition, this invention can also be changed and embodied as follows.
The second color conversion layer C2 of the color filter 5 of each of the above embodiments is a non-conversion layer that transmits the white light LW emitted from the light emitting element 9 and transmits it as it is, and the special mark display F2 is Although the display is performed in white single color, the present invention is not limited to this. For example, the second color conversion layer C2 may be a conversion layer that converts white light LG emitted from the light emitting element 9 to green. That is, in this case, the special mark display F2 is displayed in a single green color.

  In each of the above embodiments, the color filter 5 is disposed only at a position where the second color conversion layer C2 faces the pixel 8 for displaying the left and right direction indicating display lamps F2a and F2b and the seat belt display lamp F2c. It was a color filter. Even if the first color conversion layer C1 is provided at a position opposite to the center of the display area H, and the second color conversion layer C2 is provided around the first color conversion layer C1. Good.

  In the first embodiment, the luminance mode data Db is added to the luminance data Da. However, the luminance mode data Db may be input in synchronization with the luminance data Da.

  In each of the above embodiments, the EEPROM 15, the panel control circuit 16, the data operation circuit 17, and the reference voltage generation circuit 18 are independent electronic circuits, but the EEPROM 15, the panel control circuit 16, the data operation circuit 17, and the reference voltage The generation circuit 18 may be configured by one integrated circuit.

In the second embodiment, the determination unit, the luminance data generation unit, and the luminance data selection unit are one data decoder 22 provided in the data operation circuit 17, but this determination unit, luminance data generation unit The means and the luminance data selection means may be constituted by different electronic circuits.
In the first embodiment, when the bit values of the luminance mode data Db are “0, 1”, “1, 0”, “1, 1”, the luminance data Da added to the luminance mode data Db Each bit data is shifted. Then, it is converted into converted video data RVD, GVD, and BVD for emitting light with a luminance that is twice, three times, or four times higher than the normal light emission luminance, and is output to the data line driving circuit 12.

In accordance with each bit value of the luminance mode data Db, three types of converted video data RVD, GVD, and BVD for emitting light at a luminance higher than the maximum light emission luminance of each pixel 8 are stored in advance. When the bit values of the luminance mode data Db are “0, 1”, “1, 0”, “1, 1”, as shown in FIG. 14, according to the bit value of the luminance mode data Db, The previously stored converted video data RVD, GVD, and BVD may be output to the data line driving circuit 12. At this time, for example, as the converted video data GVD set in advance, “1,
0, 0, 1, 1, 1, 1, 1, 1 "," 1, 0, 1, 1, 1, 1, 1, 1, 1 "," 1, 1, 1, 1, 1, 1, “1,1,1” is prepared. As shown in FIG. 11, when the bit value of the luminance mode data Db is “0, 1”, the converted video data GVD is “
1, 0, 0, 1, 1, 1, 1, 1, 1 ”is output to the data line driving circuit 12. Further, when the bit value of the luminance mode data Db is “1, 0”, the converted video data GVD
"1,0, 1, 1, 1, 1, 1, 1, 1" is output to the data line driving circuit 12. Further, when the bit value of the luminance mode data Db is “1, 1”, “1, 1, 1, 1, 1, 1, 1, 1, 1” is converted into the data line driving circuit 12 as the converted video data GVD.
Output to.

By doing in this way, each pixel 8 can be light-emitted with the light emission brightness of equal magnification (0 times), 1.25 times, 1.5 times, or 2 times with respect to white balance adjustment brightness. As a result, as compared with the display device 1 of the first embodiment, when the left and right direction indicator lamps F2a and F2b and the seat belt indicator lamp F2c are made to emit light with a light emission luminance greater than the white balance adjustment luminance, the luminance control is finely performed. be able to.

  In the first embodiment, when the bit value “B1, B2” of the luminance mode data Db is “0, 1”, the luminance data Da is shifted to the high bit side by 1 bit, and 2 at the time of white balance adjustment. Conversion video data RVD, GVD, and BVD for emitting light with double the luminance is converted. When “1, 0”, the brightness data Da is shifted to the higher bit side by 2 bits to convert the converted video data RVD, GVD, and BVD to emit light with a brightness three times the white balance adjustment brightness. I tried to do it. Further, when “1, 1”, the luminance data Da is converted to converted video data RVD, GVD, and BVD for emitting light at a light emission luminance that is four times the white balance adjustment luminance by shifting the luminance data Da by 3 bits to the higher bit side. I tried to do it.

  The present invention is not limited to this. For example, when the bit value “B1, B2” of the luminance mode data Db is “0, 1”, the luminance data Da is shifted to the higher bit side by 1 bit to emit light with a light emission luminance that is twice the white balance adjustment luminance. Conversion video data RVD, GVD, and BVD. When “1, 0”, the luminance data Da is shifted to the higher bit side by 3 bits, thereby converting the converted data into converted video data RVD, GVD, and BVD for emitting light at a luminance that is four times the white balance adjustment luminance. To do. Furthermore, when “1, 1”, the luminance data Da is shifted to the high bit side by 7 bits, thereby converting the converted data into converted video data RVD, GVD, and BVD for emitting light at 8 times the white balance adjustment luminance. You may make it do. By doing so, it is possible to control the light emission luminance of the left and right direction indicator lamps F2a and F2b and the seat belt indicator lamp F2c in a quadratic function according to the bit values “B1 and B2” of the luminance mode data Db. .

  In each of the above embodiments, the luminance mode data Db is provided in higher bits than the most significant bit (eighth bit; “A8”) of the luminance data Da, but is not limited to this. The least significant bit (first bit; “A1”) of the luminance data Da may be provided in the least significant bit.

  In each of the above embodiments, the screen F displayed on the display area H has been described as an example of a display form including the speedometer image F1 and various special mark displays F2. This may be embodied in a tachometer that represents the engine speed of the vehicle C other than the speedometer image F1 and various special mark displays F2, a display device that displays instruments (indicators and warnings) and the like together.

  In each of the above embodiments, the special mark display F2 is the left / right direction indicator lamps F2a, F2b and the seat belt indicator lamp F2c, but is not limited to this, and other mark displays may be used. . For example, a brake light may be used.

  In each of the above embodiments, the display device 1 that is an EL element is used as the light emitting element 9, and this is a light emitting element 9 (for example, a light emitting diode (LED) element) other than the EL element. The present invention is also applicable.

  -In above-mentioned embodiment, although the instrument panel W of the vehicle C was demonstrated as an electronic device, it is not limited to this, It is widely applicable to the display apparatus for instruments.

The perspective view of the instrument panel of the vehicle carrying a display apparatus. The schematic diagram which shows the display form of the screen displayed on the display area of a display apparatus. 3A and 3B illustrate a structure of a display panel portion of a display device. The electrical block diagram of the display apparatus which concerns on 1st Embodiment. FIG. 6 is a diagram for explaining an electrical configuration of a pixel. The figure for demonstrating the structure of a color filter. The electrical block diagram of the display apparatus which concerns on 1st Embodiment. 4A and 4B illustrate a structure of a data line driver circuit. The figure for demonstrating the structure of video data. The figure for demonstrating the creation method of the conversion video data which concerns on 1st Embodiment. 6 is a flowchart for explaining the operation of the data conversion circuit according to the first embodiment. The electrical block diagram of the display apparatus which concerns on 2nd Embodiment. 9 is a flowchart for explaining the operation of the data conversion circuit according to the second embodiment. The figure for demonstrating another example.

Explanation of symbols

  C ... vehicle, Da ... luminance data, Db ... luminance mode data as luminance conversion data, DX1 to DXm ... data signal, ER, EG, EB ... power supply voltage, F ... vehicle information image, GS ... external device, H ... display Area, LX1 to LXm ... data line, LY1 to LYn ... scanning line, W ... instrument panel as electronic device, 1 ... display device, 2 ... display panel section, 5 ... color filter, 6B ... blue color conversion layer Transparent colored layer for blue, 6G ... transparent colored layer for green as a color conversion layer for green, 6R ... transparent colored layer for red as a color conversion layer for red, 8 ... pixel, 9 ... as light emitting element and electroluminescence element Organic electroluminescence element, 12... Data line driving circuit as data signal generation means, 17... Control circuit, data conversion circuit as data conversion means and extraction means, 19. Power supply circuit as a setting unit, 21 ... counter as counting means, 22 ... judging means, the luminance data generating means and the data decoder as luminance data selection means.

Claims (12)

A display panel in which a pixel having a light emitting element that emits monochromatic light is formed at each position corresponding to an intersection of a plurality of scanning lines and a plurality of data lines;
For red and green that are arranged facing the display panel and convert to red, green, and blue light for displaying a color image with monochromatic light emitted from light emitting elements of a plurality of pixels of the display panel A first region having each color conversion layer for blue, and a conversion layer for converting monochromatic light emitted from the light emitting elements of the plurality of pixels of the display panel into monochromatic light for displaying a monochromatic image. A color filter having a second region,
A data signal to be supplied to the pixel via the data line is generated based on luminance data for the pixel from an external device, and the light emitting element of the pixel is caused to emit light based on the data signal generated for each pixel. In a display method of a display device that displays an image through the color filter,
In the display panel, the adjustment brightness of the light emitted from the second area is larger than the white balance adjustment brightness of the light emitted from the first area of the color filter with respect to the same brightness data. A display method of a display device, wherein a light emitting element of a pixel in a second region is caused to emit light. In the display method of the display device according to claim 1,
Conversion data is added to the luminance data from the external device, the luminance data is converted into the new luminance data based on the added conversion data, and each pixel in the second area is converted based on the new luminance data. A display method for a display device, characterized in that the light emitting element is caused to emit light at a brightness greater than the light emission brightness corresponding to the brightness data. In the display method of the display device according to claim 1,
Determining whether the luminance data output from the external device is luminance data for a light emitting element of each pixel in the second region;
When it is determined that the brightness data is for the light emitting element of each pixel in the second area, the brightness data is changed to new brightness data that emits light with a brightness higher than the brightness brightness with respect to the brightness data, and the first brightness data is changed based on the new brightness data. A display method of a display device, wherein a light emitting element of each pixel in two regions emits light. In the display method of the display device according to any one of claims 1 to 3,
A display method for a display device, wherein a power supply voltage supplied to a light emitting element of each pixel is set to be larger than a power supply voltage determined by a preset brightness ratio for white balance. In the display method of the display device according to any one of claims 1 to 4,
An image displayed on the display panel is a vehicle information image for informing vehicle information of a vehicle. In the display method of the display device according to any one of claims 1 to 5,
The display method of a display device, wherein the light emitting element is an electroluminescence element. A display panel in which a pixel having a light emitting element that emits monochromatic light is formed at each position corresponding to an intersection of a plurality of scanning lines and a plurality of data lines;
Red that is disposed to face the display panel and converts monochromatic light emitted from light emitting elements of a plurality of pixels of the display panel into red light, green light, and blue light for displaying a color image A first region having color conversion layers for green, green, and blue, and conversion for converting to monochromatic light for displaying a monochromatic image with monochromatic light emitted from light emitting elements of a plurality of pixels of the display panel A color filter having a second region with a layer;
Luminance ratio setting means for setting each emission luminance ratio of the red light, green light, and blue light;
A display device comprising: a data signal generating means for outputting a data signal for causing the light emitting element of the pixel to emit light at an emission luminance relative to the luminance data via the data line based on luminance data for the pixel from an external device; In
In the display panel, the adjustment brightness of the light emitted from the second region is larger than the white balance adjustment luminance of the light emitted from the first region of the color filter for the same luminance data. A display device comprising control means for causing a light emitting element of a pixel in the second region to emit light. The display device according to claim 7,
The control means includes
Extracting means for extracting luminance conversion data added to the luminance data for the light emitting element of each pixel in the second region;
Based on the extracted brightness conversion data, the brightness data of the light emitting element of each pixel in the second region is converted into new brightness data that emits light with a brightness higher than that of the brightness data, and the data signal generating means And a data conversion means for outputting to the display. The display device according to claim 8, wherein
The control means includes
Counting means for counting a synchronization signal of luminance data output from the external device;
Determining means for determining whether the luminance data output together with the synchronization signal is luminance data for the light emitting element of each pixel in the second region based on the count value of the counting means;
Luminance data generating means for outputting new luminance data to be emitted with emission luminance greater than the emission luminance with respect to the luminance data when the determination unit determines that the luminance data is for the light emitting element of each pixel in the second region;
When the determination unit determines that the luminance data is for the light emitting element of each pixel in the second region, the new luminance data output from the luminance data generation unit is used instead of the luminance data from the external device. Luminance data selection means for selecting and outputting to the data signal generation means. In the display device according to any one of claims 7 to 9,
The image displayed on the said display panel is a vehicle information image which alert | reports the vehicle information of a vehicle, The display apparatus characterized by the above-mentioned. The display device according to any one of claims 7 to 10,
The display device, wherein the light emitting element is an electroluminescence element. An electronic apparatus comprising the display device according to claim 7.

Images