Indication device

Abstract

This display device comprises: a plurality of first pixels each having a first light emitting diode element and a second light emitting diode element having different colors; and a plurality of second pixels each having a third light emitting diode and a fourth light emitting diode having different colors. The light emitting diode elements of the first pixel have different color combinations from the light emitting diode elements of the second pixel, the first light emitting diode element is a green light emitting diode element, and the third light emitting diode element is a green light emitting diode element, a yellow light emitting diode element, or a white light emitting diode element. The first pixel and the second pixel are arranged to be lined up in a first direction and to be lined up in a second direction intersecting the first direction.

Description

[Technical Field]

[0001] The present disclosure relates to a display device. [Background technology]

[0002] In recent years, LED display devices in which multiple light-emitting diode elements (hereinafter referred to as "LED elements") are arranged two-dimensionally have become widely known. In LED display devices, one pixel is composed of LEDs of three colors: red (R), green (G), and blue (B) (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-75508 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the LED display device has a problem of increasing the number of wires on the board because it uses LED elements of three colors: R, G, and B. In particular, in high-resolution LED display devices, the problem of the number of wires becomes more pronounced as the number of LED elements increases.

[0005] An object of the present disclosure is to provide a display device that can reduce the number of wirings on a substrate and simplify manufacturing by changing the pixel configuration. [Means for solving the problem]

[0007] In order to solve the above problems, No. 1 Disclosure of a plurality of first pixels each having a green light emitting diode element and a red light emitting diode element; a plurality of second pixels each having a green light emitting diode element; Multiple Blue light-emitting diode element Equipped with the first pixels and the second pixels are arranged in a grid pattern so as to be alternately aligned in a first direction and also alternately aligned in a second direction intersecting the first direction; The blue light emitting diode element is a display device that is arranged in the center of the basic grid in the grid arrangement.

[0009] No. 2 Disclosure of a plurality of first pixels each having a green light-emitting portion and a red light-emitting portion; a plurality of second pixels each having a green light-emitting portion; Multiple Blue light emitting part and Equipped with the green light-emitting section of the first pixel and the green light-emitting section of the second pixel each include a white light-emitting diode and a green filter; the red light emitting section has a white light emitting diode and a red filter; the blue light emitting section has a white light emitting diode and a blue filter; the first pixels and the second pixels are arranged in a grid pattern so as to be alternately aligned in a first direction and also alternately aligned in a second direction intersecting the first direction; The blue light emitting section is a display device that is arranged in the center of the basic grid in the grid arrangement. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a plan view of a display device according to a first embodiment of the present disclosure. [Figure 2A] FIG. 2 is a plan view of a surface-mounted component. [Figure 2B] FIG. 1 is a circuit diagram of a surface-mounted component. [Figure 3A] FIG. 10 is a plan view of a surface-mounted component of a comparative example. [Figure 3B] FIG. 1 is a circuit diagram of a surface-mounted component. [Figure 4A] FIG. 10 is a plan view of a surface mount component of a modified example. [Figure 4B] FIG. 10 is a circuit diagram of a surface mount component according to a modified example. [Figure 5A] FIG. 10 is a plan view of a surface mount component of a modified example. [Figure 5B] FIG. 10 is a circuit diagram of a surface mount component according to a modified example. [Figure 6A] FIG. 10 is a plan view of a surface mount component of a modified example. [Figure 6B] FIG. 10 is a circuit diagram of a surface mount component according to a modified example. [Figure 7A] FIG. 10 is a plan view of a surface mount component of a modified example. [Figure 7B] FIG. 10 is a circuit diagram of a surface mount component according to a modified example. [Figure 8A] FIG. 10 is a plan view of a surface mount component of a modified example. [Figure 8B] FIG. 10 is a circuit diagram of a surface mount component according to a modified example. [Figure 9] FIG. 10 is a plan view of a display device according to a second embodiment of the present disclosure. [Figure 10A] FIG. 2 is a plan view of a surface-mounted component. [Figure 10B] FIG. 1 is a circuit diagram of a surface-mounted component. [Figure 11] FIG. 10 is a plan view of a display device according to a third embodiment of the present disclosure. [Figure 12A] FIG. 2 is a plan view of a surface-mounted component. [Figure 12B] FIG. 1 is a circuit diagram of a surface-mounted component. [Figure 13A] FIG. 10 is a plan view of a surface mount component of a modified example. [Figure 13B] FIG. 10 is a circuit diagram of a surface mount component according to a modified example. [Figure 13C] FIG. 10 is a circuit diagram of a surface mount component according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0011] Embodiments of the present disclosure will be described in the following order: In all drawings of the following embodiments, the same or corresponding parts are denoted by the same reference numerals. 1. First embodiment (example of a display device in which multiple surface-mounted components each having four pixels are arranged) 2. Second embodiment (example of a display device in which multiple surface-mounted components each having one pixel are arranged) 3. Third embodiment (example of a display device in which multiple surface-mounted components each having an LED element in the center are arranged)

[0012] <1 First Embodiment> [overview] Because the human eye has low resolution recognition of blue (the number of M cones is small), thinning out blue LED elements from a pixel that has three LED elements of red, green, and blue has little effect on perceived resolution. Also, because red resolution recognition is less visible than green, thinning out red LED elements from a pixel that has three LED elements of three colors has little effect on perceived resolution.

[0013] Based on the above viewpoint, the display device of the first embodiment has a plurality of first pixels having LED elements of two colors, red and green, and a plurality of second pixels having LED elements of two colors, green and blue, arranged two-dimensionally.

[0014] [Display device configuration] 1 is a plan view of a display device 10 according to a first embodiment of the present disclosure. The display device 10 is a so-called LED display device, and includes a substrate 11 and a plurality of surface mount devices (hereinafter referred to as "SMDs") 12 provided on the substrate 11.

[0015] (substrate) The substrate 11 is, for example, a printed circuit board (PCB). A plurality of scanning lines, a plurality of signal lines, and a driver IC (Integrated Circuit) for controlling the plurality of SMDs 12 via the plurality of scanning lines and the plurality of signal lines are provided on the substrate 11.

[0016] (SMD) The multiple SMDs 12 are two-dimensionally arranged in a grid pattern on the substrate 11. In the following description, the row direction of the two-dimensional arrangement is referred to as the X-axis direction (first direction), and the column direction perpendicular to the row direction is referred to as the Y-axis direction (second direction). The SMDs 12 are SMDs in which four pixels are integrated into one chip (4-in-1 SMDs).

[0017] FIG. 2A is a plan view of SMD 12. FIG. 2B is a circuit diagram of SMD 12. SMD 12 has pixel (first pixel) 21P1, pixel (first pixel) 21P2, pixel (second pixel) 22P1, and pixel (second pixel) 22P2. Pixel 21P1 and pixel 21P2 have the same color combination of light-emitting diode elements. Pixel 22P1 and pixel 22P2 have the same color combination of light-emitting diode elements. Pixels 21P1, 21P2 and pixels 22P1, 22P2 have different color combinations of light-emitting diode elements. In the following description, when there is no need to distinguish between pixel 21P1 and pixel 21P2, they may be referred to as pixel 21P. Furthermore, when there is no need to distinguish between pixel 22P1 and pixel 22P2, they may be referred to as pixel 22P.

[0018] Pixel 21P1 and pixel 21P2 have a pair of LED elements of different colors, that is, a green LED element (first LED element) 20G and a red LED element (second LED element) 20R. Pixel 22P1 and pixel 22P2 have a pair of LED elements of different colors, that is, a green LED element (third LED element) 20G and a blue LED element (fourth LED element) 20B.

[0019] The pixels 21P and 22P are two-dimensionally arranged in a lattice (matrix) pattern, alternately aligned in the X-axis direction and alternately aligned in the Y-axis direction, which intersects the X-axis direction at right angles. That is, the pixels 21P and 22P are two-dimensionally arranged in a staggered pattern. While FIGS. 1 and 2A show an example in which the basic lattice L in the lattice arrangement is square, the shape of the basic lattice L is not limited thereto and may be a quadrangle such as a rectangle, a rhombus, or a parallelogram. The SMD 12 includes one basic lattice L.

[0020] The SMD 12 is a common cathode type in which the cathode serves as a common terminal. The SMD 12 has cathode terminals (gate terminals) 24GT1 and 24GT2, which are common terminals, an anode terminal 24R1, anode terminals 24G1 and 24G2, and an anode terminal 24B1.

[0021] The cathodes of the green LED element 20G and red LED element 20R of pixel 21P1 and the cathodes of the green LED element 20G and blue LED element 20B of pixel 22P1 are connected to scan line GT1 via a common cathode terminal 24GT1. The cathodes of the green LED element 20G and red LED element 20R of pixel 21P2 and the cathodes of the green LED element 20G and blue LED element 20B of pixel 22P2 are connected to scan line GT2 via a common cathode terminal 24GT2.

[0022] The anode of the green LED element 20G in pixel 21P1 and the anode of the green LED element 20G in pixel 22P2 are connected to signal line G1 via anode terminal 24G1. The anode of the green LED element 20G in pixel 21P2 and the anode of the green LED element 20G in pixel 22P1 are connected to signal line G2 via anode terminal 24G2.

[0023] The anode of the red LED element 20R of the pixel 21P1 and the anode of the red LED element 20R of the pixel 21P2 are connected to the signal line R1 via the anode terminal 24R1.

[0024] The anode of the blue LED element 20B in the pixel 22P1 and the anode of the blue LED element 20B in the pixel 22P2 are connected to the signal line B1 via the anode terminal 24B1.

[0025] The scanning lines GT1 and GT2 are connected to gates (not shown) that function as switches. The signal lines R1, B1, G1, and G2 are connected to DC sources DC1, DC2, DC3, and DC4, respectively. In the common-cathode SMD 12, a current is supplied from the driver to each of the LED elements 20R, 20G, and 20B.

[0026] [Action and effect] As described above, the display device 10 according to the first embodiment includes a plurality of pixels 21P each having a green LED element 20G and a red LED element 20R, and a plurality of pixels 22P each having a green LED element 20G and a blue LED element 20B. The pixels 21P and the pixels 22P are arranged alternately in the X-axis direction and alternately in the Y-axis direction, which intersects the X-axis direction at right angles. With the above configuration, the number of LED elements in the display device 10 can be reduced, and therefore the number of components in the display device 10 can be reduced. This improves the reliability of the display device 10. Furthermore, changing the pixel configuration can simplify manufacturing. Furthermore, in the display device 10, the number of drive wirings can be reduced, which allows the wiring rules for the substrate 11 to be relaxed and the number of driver ICs to be reduced. Furthermore, since the number of parts and driver ICs can be reduced as described above, the cost of the display device 10 can also be reduced. Furthermore, by reducing the number of driver ICs, the amount of heat generated by the display device 10 (that is, power consumption) can be reduced, and the brightness of the display device 10 can also be improved.

[0027] Pixels 21P1 and 21P2 are formed by thinning out the blue LED element 20B from a pixel having three-color LED elements 20R, 20G, and 20B, and pixels 22P1 and 22P2 are formed by thinning out the red LED element 20R from a pixel having three-color LED elements 20R, 20G, and 20B. This reduces the total signal volume by two-thirds. This is equivalent to converting a video signal (RGB) into a Y color difference signal. Furthermore, video signal transmission and signal processing costs can be reduced by two-thirds, thereby reducing circuit costs. Furthermore, reducing the total signal volume prevents degradation of signal quality, making it possible to extend the signal transmission distance between the controller and the display unit.

[0028] Since both pixel 21P and pixel 22P have a green LED element 20G with high visibility, degradation of resolution (image quality) can be suppressed even on a screen configured by two-dimensionally arranging a plurality of pixels 21P having only two-color LED elements 20G, 20R and a plurality of pixels 22P having only two-color LED elements 20G, 20B.

[0029] FIG. 3A is a plan view of the SMD 32 of the comparative example. FIG. 3B is a circuit diagram of the SMD 32 of the comparative example. As shown in FIG. 3A, each of the pixels 21P1, 21P2, 22P1, and 22P2 of the SMD 32 has three LED elements 20R, 20G, and 20B, each color red, green, and blue. Therefore, as shown in FIG. 3B, the number of drive wiring lines is large, and the wiring rules for the board become complicated. This results in an increase in the number of driver ICs.

[0030] [Variations] (Variation 1) 4A and 4B, each of the pixels 22P1 and 22P2 may have a yellow LED element (third LED element) 20Y instead of the green LED element (third LED element) 20G (see FIGS. 2A and 2B). That is, each of the pixels 22P1 and 22P2 may have a yellow LED element 20Y and a blue LED element 20B.

[0031] In the above pixel configuration, SMD12 has an anode terminal 24Y1 instead of anode terminal 24G2 (see FIG. 2A). The anode of yellow LED element 20Y in pixel 22P1 is connected to signal line Y1 via anode terminal 24Y1, and the cathode is connected to scan line GT1 via cathode terminal 24GT1. The anode of yellow LED element 20Y in pixel 22P2 is connected to signal line Y1 via anode terminal 24Y1, and the cathode is connected to scan line GT2 via cathode terminal 24GT2.

[0032] Pixels 21P1 and 21P2 each have a green LED element 20G with high luminosity, and pixels 22P1 and 22P2 each have a yellow LED element 20Y with high luminosity. This makes it possible to suppress degradation of resolution (image quality) even on a screen configured by two-dimensionally arranging a plurality of pixels 21P1 and 21P2 each having only two-color LED elements 20G and 20R and a plurality of pixels 22P1 and 22P2 each having only two-color LED elements 20Y and 20B.

[0033] Furthermore, since yellow is a mixture of green and red, in a low saturation display state such as a white display state, the pixels 22P1 and 22P2 emit light close to white, improving the perceived resolution.

[0034] (Variation 2) 5A and 5B, each of the pixels 22P1 and 22P2 may have a white LED element (third LED element) 20W instead of the green LED element (third LED element) 20G (see FIGS. 2A and 2B). That is, each of the pixels 22P1 and 22P2 may have a white LED element 20W and a blue LED element 20B.

[0035] In the above pixel configuration, the SMD 12 has an anode terminal 24W1 instead of the anode terminal 24G2 (see FIG. 2A). The anode of the white LED element 20W in the pixel 22P1 is connected to the signal line W1 via the anode terminal 24W1, and the cathode is connected to the scan line GT1 via the cathode terminal 24GT1. The anode of the white LED element 20W in the pixel 22P2 is connected to the signal line W1 via the anode terminal 24W1, and the cathode is connected to the scan line GT2 via the cathode terminal 24GT2.

[0036] The pixels 21P1 and 21P2 have a green LED element 20G with high visibility, and the pixels 22P1 and 22P2 have a white LED element 20W with high visibility. This makes it possible to suppress degradation of resolution (image quality) even on a screen configured by two-dimensionally arranging a plurality of pixels 21P1 and 21P2 each having only two-color LED elements 20G and 20R and a plurality of pixels 22P1 and 22P2 each having only two-color LED elements 20W and 20B.

[0037] Furthermore, since white is a mixture of green, red, and blue, in a low saturation display state such as a white display state, the pixels 22P1 and 22P2 emit light close to white, improving the perceived resolution.

[0038] (Variation 3) As shown in FIGS. 6A and 6B, pixels 22P1 and 22P2 may each further include a red LED element (fifth LED element) 20R in addition to a green LED element 20G and a blue LED element 20B (see FIGS. 2A and 2B).

[0039] In the above configuration, SMD 12 has cathode terminals 24GT1 and 24GT2, anode terminal 24R1, anode terminals 24G1 and 24G2, and anode terminal 24B1 (see FIG. 2A), and further has anode terminal 24R2. The anode of red LED element 20R of added pixel 22P1 is connected to signal line R2 via anode terminal 24R2, and the cathode is connected to scan line GT1 via cathode terminal 24GT1. The anode of red LED element 20R of added pixel 22P2 is connected to signal line R1 via anode terminal 24R1, and the cathode is connected to scan line GT2 via cathode terminal 24GT2. In the first embodiment, the anode of the red LED element 20R of the pixel 21P2 is connected to the signal line R1 via the anode terminal 24R1, but in the third modification, it is connected to the signal line R2 via the anode terminal 24R2.

[0040] (Variation 4) SMD12 may have a circuit configuration different from that of Modification 3. For example, as shown in Fig. 7B, in SMD12, red LED elements 20R included in pixels 21P1 and 22P2 adjacent to each other in the Y-axis direction may be connected in parallel between signal line R1 and scan line GT1. Specifically, the anodes of red LED elements 20R included in pixels 21P1 and 22P2 adjacent to each other in the Y-axis direction may both be connected to signal line R1 via anode terminal 24R1, and the cathodes may both be connected to scan line GT1 via cathode terminal 24GT1.

[0041] Similarly, the red LED elements 20R of the pixels 22P1 and 21P2 adjacent to each other in the Y-axis direction may be connected in parallel between the signal line R1 and the scanning line GT2. Specifically, the anodes of the red LED elements 20R of the pixels 22P1 and 21P2 adjacent to each other in the Y-axis direction may both be connected to the signal line R1 via the anode terminal 24R1, and the cathodes may both be connected to the scanning line GT2 via the cathode terminal 24GT2.

[0042] By having the above circuit configuration in the SMD 12, as shown in FIGS. 7A and 7B, the anode terminal 24R2 (see FIG. 6A) and the signal line R2 (see FIG. 6B) can be omitted.

[0043] (Variation 5) In the first embodiment, an example was described in which SMD 12 is a common-cathode type in which the cathode serves as a common terminal, but it may also be an anode-common type in which the anode serves as a common terminal. In an anode-common SMD 12, a gate (switch) is provided on the common anode side of each LED element 20R, 20G, 20B, and is switched on the power supply side (high potential side), and a current source on the cathode side draws current from each LED element 20R, 20G, 20B.

[0044] Fig. 8A is a plan view of the anode-common type SMD 12. Fig. 8B is a circuit diagram of the anode-common type SMD 12. The anode-common type SMD 12 has anode terminals (gate terminals) 25GT1 and 25GT2, which are common terminals, cathode terminal 25R1, cathode terminals 25G1 and 25G2, and cathode terminal 25B1.

[0045] The anodes of the green LED element 20G and red LED element 20R of pixel 21P1 and the anodes of the green LED element 20G and blue LED element 20B of pixel 22P1 are connected to scan line GT1 via a common anode terminal 25GT1. The anodes of the green LED element 20G and red LED element 20R of pixel 21P2 and the anodes of the green LED element 20G and blue LED element 20B of pixel 22P2 are connected to scan line GT2 via a common anode terminal 25GT2.

[0046] The cathode of the green LED element 20G in pixel 21P1 and the cathode of the green LED element 20G in pixel 22P2 are connected to signal line G1 via cathode terminal 25G1. The cathode of the green LED element 20G in pixel 21P2 and the cathode of the green LED element 20G in pixel 22P1 are connected to signal line G2 via cathode terminal 25G2.

[0047] The cathode of the red LED element 20R in the pixel 21P1 and the cathode of the red LED element 20R in the pixel 21P2 are connected to the signal line R1 via a cathode terminal 25R1.

[0048] The cathode of the blue LED element 20B in the pixel 22P1 and the cathode of the blue LED element 20B in the pixel 22P2 are connected to the signal line B1 via a cathode terminal 25B1.

[0049] The scanning lines GT1 and GT2 are connected to gates (not shown) that function as switches. The signal lines R1, B1, G1, and G2 are connected to DC sources DC1, DC2, DC3, and DC4, respectively.

[0050] In addition, in the first to fourth modifications, the SMD 12 may be of the anode common type instead of the cathode common type.

[0051] (Variation 6) In the first embodiment, an example has been described in which each of the multiple SMDs 12 has 2×2 pixels 21P1 and pixels 21P2, but each of the multiple SMDs 12 may have n×m pixels 21P1 and pixels 21P2 (where n and m are, for example, integers equal to or greater than 1, and preferably integers equal to or greater than 2. n is the number of pixels in the X-axis direction, and m is the number of pixels in the Y-axis direction). Note that the pixel arrangement in the first embodiment corresponds to an example in which the number n of pixels in the X-axis direction and the number m of pixels in the Y-axis direction are each 2.

[0052] <2. Second embodiment> [Display device configuration] 9 is a plan view of a display device 110 according to a second embodiment of the present disclosure. The display device 110 includes a substrate 111, and a plurality of SMDs 121 and a plurality of SMDs 122 provided on the substrate 111.

[0053] (substrate) The substrate 111 is similar to the substrate 11 in the first embodiment, except that it has a plurality of signal lines for controlling the plurality of SMDs 121 and the plurality of SMDs 122, a plurality of scanning lines, a driver IC, and the like.

[0054] (SMD) The multiple SMDs 121 and 122 are two-dimensionally arranged in a grid (matrix) such that the SMDs 121 and 122 are alternately arranged in the X-axis direction and alternately arranged in the Y-axis direction. The SMDs 121 and 122 are SMDs (1-in-1 SMDs) in which one pixel is integrated into one chip. In the following explanation, the positions of the multiple SMDs 121 and 122 arranged two-dimensionally in a grid will be represented by (N, M) (where N indicates the column number of the SMDs 121 and 122, and M indicates the row number of the SMDs 121 and 122).

[0055] FIG. 10A is a plan view of SMDs 121 and 122. FIG. 10B is a circuit diagram of SMDs 121 and 122. SMDs 121 and 122 are common-cathode types in which the cathode serves as a common terminal. Each of the multiple SMDs 121 includes one pixel (first pixel) 21P1. Each of the multiple SMDs 122 includes one pixel (second pixel) 22P1. SMD 121 has a cathode terminal (gate terminal) 24GT, an anode terminal 24R, and an anode terminal 24G. SMD 122 has a cathode terminal (gate terminal) 24GT, an anode terminal 24B, and an anode terminal 24G.

[0056] The cathodes of the green LED element 20G and the red LED element 20R of SMD121 (i.e., pixel 21P1) located at (N, M+1) are connected to the scan line GT1 via a common cathode terminal 24GT. The cathodes of the green LED element 20G and the blue LED element 20B of SMD122 (i.e., pixel 22P1) located at (N+1, M+1) are connected to the scan line GT1 via a common cathode terminal 24GT.

[0057] The cathodes of the green LED element 20G and the red LED element 20R of SMD121 (i.e., pixel 21P1) located at (N+1, M) are connected to the scan line GT2 via a common cathode terminal 24GT. The cathodes of the green LED element 20G and the blue LED element 20B of SMD122 (i.e., pixel 22P1) located at (N, M) are connected to the scan line GT2 via a common cathode terminal 24GT.

[0058] The anode of the green LED element 20G of SMD121 (i.e., pixel 21P1) located at (N,M+1) is connected to signal line G1 via anode terminal 24G. The anode of the red LED element 20R of SMD121 (i.e., pixel 21P1) located at (N,M+1) is connected to signal line R1 via anode terminal 24R.

[0059] The anode of the green LED element 20G of SMD122 (i.e., pixel 22P1) located at (N+1, M+1) is connected to signal line G2 via anode terminal 24G. The anode of the blue LED element 20B of SMD122 (i.e., pixel 22P1) located at (N+1, M+1) is connected to signal line B1 via anode terminal 24B.

[0060] The anode of the green LED element 20G of the SMD121 (i.e., pixel 21P1) located at (N+1, M) is connected to signal line G2 via anode terminal 24G. The anode of the red LED element 20R of the SMD121 (i.e., pixel 21P1) located at (N+1, M) is connected to signal line R1 via anode terminal 24R.

[0061] The anode of the green LED element 20G of the SMD122 (i.e., pixel 22P1) located at (N, M) is connected to signal line G1 via anode terminal 24G. The anode of the blue LED element 20B of the SMD122 (i.e., pixel 22P1) located at (N, M) is connected to signal line B1 via anode terminal 24B.

[0062] [Action and effect] As described above, the display device 110 according to the second embodiment includes a plurality of SMDs 121 each having one pixel 21P1 and a plurality of SMDs 122 each having one pixel 22P1, and the SMDs 121 and 122 are alternately arranged in the X-axis direction and alternately arranged in the Y-axis direction. Therefore, it is possible to obtain the same effects as the display device 10 according to the first embodiment.

[0063] [Variations] (Variation 1) In the above-described second embodiment, an example was described in which the display device 110 has four pixels 21P1, 21P2, 22P1, and 22P2 that are included in one SMD 12 (see FIG. 2A) in the first embodiment, in four separate SMDs 121 and 122. However, in variant 1, variant 2, variant 3, or variant 4 of the first embodiment, the four pixels 21P1, 21P2, 22P1, and 22P2 that are included in one SMD 12 may also be included in four separate SMDs 121 and 122.

[0064] (Variation 2) In the second embodiment, an example has been described in which the SMDs 121 and 122 are of the common cathode type, but the SMDs 121 and 122 may also be of the common anode type.

[0065] <3 Third embodiment> 11 is a plan view of a display device 210 according to a third embodiment of the present disclosure. The display device 210 includes a substrate 211 and a plurality of SMDs 212 provided on the substrate 211.

[0066] (substrate) The substrate 211 is similar to the substrate 11 in the first embodiment, except that it has a plurality of signal lines for controlling a plurality of SMDs 212, a plurality of scanning lines, a driver IC, and the like.

[0067] (SMD) Fig. 12A is a plan view of SMD212. Fig. 12B is a circuit diagram of SMD112. SMD212 differs from SMD12 in the first embodiment in that pixel 22P1 and pixel 22P2 each have only a green LED element 20G and further have a blue LED 23B arranged in the center of the basic grid L. The anode of blue LED 23B is connected to signal line B1, and the cathode is connected to scan line GT2.

[0068] The display device 210 according to the third embodiment is similar to the display device 10 according to the first embodiment in all other respects than those described above.

[0069] [Action and effect] As described above, in the display device 210 according to the third embodiment, instead of providing each of the pixels 22P1 and 22P2 with a blue LED element 20B, the blue LED 23B is arranged in the center of the basic grid L. This makes it possible to reduce the number of blue LED elements 20B compared to the display device 10 according to the first embodiment. This allows the display device 210 to be made more inexpensive.

[0070] [Variations] (Variation 1) In the above-described third embodiment, an example was described in which the pixel 22P1 and the pixel 22P2 of the SMD 212 each have only a green LED element 20G. However, as shown in FIG. 13A, the pixel 22P1 and the pixel 22P2 may each further have a red LED element 20R.

[0071] 13B, the anode of red LED element 20R of pixel 22P1 may be connected to signal line R2 via anode terminal 24R2, and the cathode may be connected to scan line GT1 via cathode terminal 24GT1. The anode of red LED element 20R of pixel 22P2 may be connected to signal line R1 via anode terminal 24R1, and the cathode may be connected to scan line GT2 via cathode terminal 24GT2.

[0072] The SMD 212 may have a circuit configuration different from the above circuit configuration (FIG. 13B). For example, as shown in FIG. 13C, in the SMD 212, the red LED elements 20R of the pixels 21P1 and 22P2 adjacent to each other in the Y-axis direction may be connected in parallel between the signal line R1 and the scan line GT1. Specifically, the anodes of the red LED elements 20R of the pixels 21P1 and 22P2 adjacent to each other in the Y-axis direction may both be connected to the signal line R1 via the anode terminal 24R1, and the cathode ... scan line GT1 via the cathode terminal 24GT1.

[0073] Similarly, the red LED elements 20R of the pixels 22P1 and 21P2 adjacent to each other in the Y-axis direction may be connected in parallel between the signal line R1 and the scanning line GT2. Specifically, the anodes of the red LED elements 20R of the pixels 22P1 and 21P2 adjacent to each other in the Y-axis direction may both be connected to the signal line R1 via the anode terminal 24R1, and the cathodes may both be connected to the scanning line GT2 via the cathode terminal 24GT2.

[0074] By having the above circuit configuration in the SMD 212, the anode terminal 24R2 (see FIG. 13A) and the signal line R2 (see FIG. 13B) can be omitted.

[0075] (Variation 2) In the first to third embodiments described above, examples have been described in which the display devices 10, 110, and 210 include a plurality of SMDs 12, 121, 122, and 212, each having a plurality of LED elements 20R, 20B, and 20G. However, instead of the plurality of SMDs 12, 121, 122, and 212, a plurality of COBs (chip on boards) or GOBs (glue on boards) each having a plurality of LED elements 20R, 20B, and 20G may be provided. The GOB includes a protective layer on the display surface that covers the plurality of pixels 21P and the plurality of pixels 22P. The protective layer may be formed of, for example, a resin layer or a film.

[0076] (Variation 3) In the above-described first to third embodiments, examples have been described in which a plurality of SMDs 12, 121, 122, 212 are two-dimensionally arranged on a substrate, but a plurality of pixels 21P and a plurality of pixels 22P may be two-dimensionally arranged directly on the substrate 11, 111, 211. In this case, a plurality of LED elements 20R, 20B, 20G may be embedded in the substrate 11, 111, 211. The LED elements 20R, 20B, 20G may be micro LED elements.

[0077] (Variation 4) In the first to third embodiments described above, examples have been described in which the pixels 21P1, 21P2, 22P1, and 22P2 (hereinafter referred to as "pixels 21P1, etc.") have a red LED element 20R, a green LED element 20G, a blue LED element 20B, and a yellow LED element 20Y as light-emitting units. However, the light-emitting units are not limited to these. For example, the pixels 21P1, etc. may have a white LED element 20W and a red filter provided on the white LED element 20W instead of the red LED element 20R, thereby forming a red light-emitting unit capable of emitting red light. The pixels 21P1, etc. may have a white LED element 20W and a green filter provided on the white LED element 20W instead of the green LED element 20G, thereby forming a green light-emitting unit capable of emitting green light. The pixel 21P1 etc. may have a white LED element 20W instead of the blue LED element 20B and a blue filter provided on the white LED element 20W, thereby forming a blue light-emitting portion capable of emitting blue light. The pixel 21P1 etc. may have a white LED element 20W instead of the yellow LED element 20Y and a yellow filter provided on the white LED element 20W, thereby forming a yellow light-emitting portion capable of emitting yellow light.

[0078] In addition, in the third embodiment, SMD212 may have a blue light-emitting unit that has a white LED element 20W and a blue filter provided on the white LED element 20W instead of the blue LED 23B, and is configured to be able to emit blue light.

[0079] The light-emitting unit may also have the following configurations. For example, the pixel 21P1, etc. may have a blue LED and a red light-emitting element using quantum dot (QD) color conversion instead of the red LED element 20R. The pixel 21P1, etc. may have a blue LED and a green light-emitting element using quantum dot (QD) color conversion instead of the green LED element 20G. The pixel 21P1, etc. may have a blue LED and a yellow light-emitting element using quantum dot (QD) color conversion instead of the yellow LED element 20Y.

[0080] The above describes the embodiments and modifications of the present disclosure in detail, but the present disclosure is not limited to the above-described embodiments and modifications, and various modifications based on the technical ideas of the present disclosure are possible.

[0081] For example, the configurations, methods, shapes, etc. given in the above-described embodiments and modifications are merely examples, and different configurations, methods, shapes, etc. may be used as necessary.

[0082] The configurations, methods, shapes, and the like of the above-described embodiments and modified examples can be combined with each other without departing from the spirit of the present disclosure.

[0083] The present disclosure may also employ the following configuration. (1) a plurality of first pixels each having a first light emitting diode element and a second light emitting diode element of different colors; a plurality of second pixels each having a third light-emitting diode element and a fourth light-emitting diode element that are different in color from each other; Equipped with the first pixel and the second pixel have different color combinations of light-emitting diode elements, the first light-emitting diode element is a green light-emitting diode element, the third light-emitting diode element is a green light-emitting diode element, a yellow light-emitting diode element, or a white light-emitting diode element; A display device in which the first pixels and the second pixels are arranged alternately in a first direction and also alternately in a second direction intersecting the first direction. (2) the second light-emitting diode element is a red light-emitting diode element, the third light-emitting diode element is the green light-emitting diode element, The display device according to (1), wherein the fourth light emitting diode element is a blue light emitting diode element. (3) the second light-emitting diode element is a red light-emitting diode element, the third light-emitting diode element is the yellow light-emitting diode element, The display device according to (1), wherein the fourth light emitting diode element is a blue light emitting diode element. (4) the second light-emitting diode element is a red light-emitting diode element, the third light-emitting diode element is the white light-emitting diode element, The display device according to (1), wherein the fourth light emitting diode element is a blue light emitting diode element. (5) the second pixel further comprises a fifth light emitting diode element; the second light-emitting diode element is a red light-emitting diode element, the third light-emitting diode element is the green light-emitting diode element, the fourth light-emitting diode element is a blue light-emitting diode element, The display device according to (1), wherein the fifth light-emitting diode element is a red light-emitting diode element. (6) The display device according to (5), wherein the red light emitting diode elements of the first pixel and the second pixel adjacent to each other in the second direction are connected in parallel. (7) Further comprising a plurality of surface mount components; A display device according to any one of (1) to (6), wherein each of the plurality of surface-mounted components has n×m pieces of the first pixels and the second pixels (where n is the number of pixels in the first direction, and m is the number of pixels in the second direction). (8) The display device according to (7), wherein the number n of pixels in the first direction and the number m of pixels in the second direction are each two. (9) a plurality of first surface mount components; a plurality of second surface mount components; Furthermore, each of the plurality of first surface-mounted components has one of the first pixels; each of the plurality of second surface-mounted components has one of the second pixels; The display device according to any one of (1) to (6), wherein the first surface-mounted components and the second surface-mounted components are arranged alternately in the first direction and alternately in the second direction. (10) Further comprising a substrate; The display device according to any one of (1) to (6), wherein a plurality of the first pixels and a plurality of the second pixels are two-dimensionally arranged directly on the substrate. (11) The display device according to any one of (1) to (10), further comprising a protective layer covering the plurality of first pixels and the plurality of second pixels. (12) a plurality of first pixels each having a green light emitting diode element and a red light emitting diode element; a plurality of second pixels each having a green light emitting diode element; Blue light-emitting diode element Equipped with the first pixels and the second pixels are arranged in a grid pattern so as to be alternately aligned in a first direction and to be alternately aligned in a second direction intersecting the first direction, The display device wherein the blue light emitting diode element is arranged in the center of a basic grid in the grid-like arrangement. (13) The display device according to (12), wherein the second pixel further includes a red light-emitting diode element. (14) a first pixel having a first light-emitting portion and a second light-emitting portion that are different in color from each other; a second pixel having a third light-emitting portion and a fourth light-emitting portion that are different in color from each other; the first pixel and the second pixel have different color combinations of light-emitting portions, the first light-emitting unit is a green light-emitting unit having a white light-emitting diode and a green filter, the third light-emitting unit is a green light-emitting unit having a white light-emitting diode and a green filter, a yellow light-emitting unit having a white light-emitting diode and a yellow filter, or a white light-emitting unit having a white light-emitting diode, A display device in which the first pixels and the second pixels are arranged alternately in a first direction and also alternately in a second direction intersecting the first direction. (15) the second light-emitting unit is a red light-emitting unit having a white light-emitting diode and a red filter, the third light-emitting unit is the green light-emitting unit, The display device according to (14), wherein the fourth light-emitting section is a blue light-emitting section having a white light-emitting diode and a blue filter. (16) the second light-emitting unit is a red light-emitting unit having a white light-emitting diode and a red filter, the third light-emitting unit is the yellow light-emitting unit, The display device according to (14), wherein the fourth light-emitting section is a blue light-emitting section having a white light-emitting diode and a blue filter. (17) the second light-emitting unit is a red light-emitting unit having a white light-emitting diode and a red filter, the third light-emitting unit is the white light-emitting unit, The display device according to (14), wherein the fourth light-emitting section is a blue light-emitting section having a white light-emitting diode and a blue filter. (18) the second pixel further includes a fifth light-emitting portion, the second light-emitting unit is a red light-emitting unit having a white light-emitting diode and a red filter, the third light-emitting unit is the green light-emitting unit, the fourth light-emitting unit is a green light-emitting unit having a white light-emitting diode and a blue filter, The display device according to (14), wherein the fifth light-emitting section is a blue light-emitting section having a white light-emitting diode and a red filter. (19) a plurality of first pixels each having a green light-emitting portion and a red light-emitting portion; a plurality of second pixels each having a green light-emitting portion; Blue light emitting part and Equipped with the green light-emitting unit of the first pixel and the green light-emitting unit of the second pixel each include a white light-emitting diode and a green filter; the red light emitting unit has a white light emitting diode and a red filter, the blue light emitting unit has a white light emitting diode and a blue filter, the first pixels and the second pixels are arranged in a grid pattern so as to be alternately aligned in a first direction and to be alternately aligned in a second direction intersecting the first direction, The display device wherein the blue light-emitting portion is arranged in the center of a basic grid in the grid-like arrangement. (20) the second pixel further includes a red light-emitting portion, The display device according to (19), wherein the red light emitting section of the second pixel includes a white light emitting diode and a red filter. [Explanation of symbols]

[0084] 10, 110, 210 display device 11, 111, 211 board 12, 32, 121, 122, 212 SMD 20R red LED element 20G green LED element 20B blue LED element 20Y yellow LED element 20W white LED element 21P1, 21P2 pixels (first pixels) 22P1, 22P2 pixels (second pixels) 23B Blue LED element 24R, 24G, 24B Anode terminal 24GT cathode terminal 24R1, 24R2, 24G1, 24G2, 24B1, 24B2, 24Y1, 24W1 Anode terminal 24GT1, 24GT2 cathode terminal 25R1, 25G1, 25G2, 25B1 cathode terminal 25GT1, 25GT2 anode terminal R1, R2, G1, G2, B1, B2, Y1, W1 signal line GT1, GT2 scanning lines DC1, DC2, DC3, DC4, DC5, DC6 DC source

Claims

1. a plurality of first pixels each having a green light emitting diode element and a red light emitting diode element; a plurality of second pixels each having a green light emitting diode element; A plurality of blue light-emitting diode elements Equipped with the first pixels and the second pixels are arranged in a grid pattern so as to be alternately aligned in a first direction and to be alternately aligned in a second direction intersecting the first direction, The display device wherein the blue light emitting diode element is arranged in the center of a basic grid in the grid-like arrangement.

2. The display device according to claim 1 , wherein the second pixel further comprises a red light-emitting diode element.

3. Further comprising a plurality of surface mount components arranged two-dimensionally, 2. The display device according to claim 1, wherein each of the plurality of surface-mounted components is provided with two of the first pixels, two of the second pixels, and one of the blue light-emitting diode elements.

4. Further comprising a substrate; 2. The display device according to claim 1, wherein a plurality of the first pixels, a plurality of the second pixels, and a plurality of the blue light-emitting diode elements are two-dimensionally arranged directly on the substrate.

5. The display device according to claim 1 , further comprising a protective layer that covers the plurality of first pixels, the plurality of second pixels, and the plurality of blue light-emitting diode elements.

6. a plurality of first pixels each having a green light-emitting portion and a red light-emitting portion; a plurality of second pixels each having a green light-emitting portion; Multiple blue light-emitting parts Equipped with the green light-emitting unit of the first pixel and the green light-emitting unit of the second pixel each include a white light-emitting diode and a green filter; the red light emitting unit has a white light emitting diode and a red filter, the blue light emitting unit has a white light emitting diode and a blue filter, the first pixels and the second pixels are arranged in a grid pattern so as to be alternately aligned in a first direction and to be alternately aligned in a second direction intersecting the first direction, The display device wherein the blue light-emitting portion is arranged in the center of a basic grid in the grid-like arrangement.

7. the second pixel further includes a red light-emitting portion, The display device according to claim 6 , wherein the red light emitting portion of the second pixel includes a white light emitting diode and a red filter.

8. Further comprising a plurality of surface mount components arranged two-dimensionally, 7. The display device according to claim 6, wherein each of the plurality of surface-mounted components is provided with two of the first pixels, two of the second pixels, and one of the blue light-emitting portions.

9. Further comprising a substrate; The display device according to claim 6 , wherein a plurality of the first pixels, a plurality of the second pixels, and a plurality of the blue light-emitting portions are two-dimensionally arranged directly on the substrate.

10. The display device according to claim 6 , further comprising a protective layer that covers the first pixels, the second pixels, and the blue light-emitting portions.

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