WO2022230565A1 - 表示装置 - Google Patents
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- WO2022230565A1 WO2022230565A1 PCT/JP2022/015628 JP2022015628W WO2022230565A1 WO 2022230565 A1 WO2022230565 A1 WO 2022230565A1 JP 2022015628 W JP2022015628 W JP 2022015628W WO 2022230565 A1 WO2022230565 A1 WO 2022230565A1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
Definitions
- the present disclosure relates to display devices.
- a plurality of scanning signal lines and a plurality of image signal lines are arranged in a lattice, and a plurality of pixel portions are arranged in a matrix so as to correspond to intersections of the plurality of scanning signal lines and the plurality of image signal lines.
- a display device that has an image display unit that has been processed (for example, see the description of Patent Document 1).
- a display device is disclosed.
- the display device includes an image display section, a plurality of drive signal lines, and a drive section.
- the image display section includes a plurality of pixel sections and a plurality of light emission control signal lines for supplying image signals to columns of the pixel sections among the plurality of pixel sections.
- the plurality of drive signal lines supply an image signal to each of the plurality of emission control signal lines.
- the drive section supplies an image signal to each of the plurality of drive signal lines.
- the image display section includes a plurality of switching sections each connected to each of the plurality of drive signal lines. One normal drive signal line among the plurality of drive signal lines and one or more separate drive signal lines different from the one normal drive signal line are switched to the corresponding light emission control signal line.
- Each of the plurality of switching units has a first conduction state in which an image signal can be supplied from the driving unit to the corresponding light emission control signal line via the one normal driving signal line, and a first conduction state in which an image signal can be supplied from the driving unit to the and a second conduction state in which an image signal can be supplied to the corresponding light emission control signal line via one or more separate drive signal lines.
- FIG. 1 is a front view schematically showing an example of a tiling display according to each embodiment.
- FIG. 2 is a side view schematically showing an example of the display device according to each embodiment.
- FIG. 3 is a back view schematically showing an example of the display device according to each embodiment.
- FIG. 4 is a diagram schematically showing an example of the layout of each part constituting the image display part in the IV part of the display device of FIG.
- FIG. 5 is a block diagram schematically showing an example of the configuration of the display device according to the first embodiment;
- FIG. 8 is a timing chart showing an example of changes in the input and output of the switching setting section in the non-disconnected state.
- FIG. 9 is a timing chart showing an example of changes in the input and output of the switching setting section in the disconnected state.
- FIG. 10 is a block diagram schematically showing an example of the configuration of the display device according to the second embodiment.
- FIG. 11 is a circuit diagram showing an example of a switching section and a switching setting section according to the second embodiment.
- FIG. 12 is a diagram showing a truth table representing the relationship between patterns of signals input to a switching setting unit from a plurality of designated signal lines and signals output from the switching setting unit.
- FIG. 13 is a circuit diagram showing an example of a switching unit in the display device according to the third embodiment;
- FIG. 14 is a block diagram schematically showing a first example of the configuration of the display device according to the fourth embodiment.
- FIG. 15 is a block diagram schematically showing a second example of the configuration of the display device according to the fourth embodiment.
- FIG. 16 is a block diagram schematically showing a first example of the configuration of the display device according to the fifth embodiment.
- 17 is a block diagram schematically showing a modification of the display device of FIG. 16.
- FIG. FIG. 18 is a circuit diagram showing a first example of a switching section and a switching setting section according to the fifth embodiment.
- FIG. 19 is a block diagram schematically showing a second example of the configuration of the display device according to the fifth embodiment.
- FIG. 20 is a circuit diagram showing a second example of the switching section and switching setting section according to the fifth embodiment.
- FIG. 21 is a block diagram schematically showing a first example of the configuration of the display device according to the sixth embodiment.
- FIG. 22 is a block diagram schematically showing a second example of the configuration of the display device according to the sixth embodiment.
- FIG. 23 is a block diagram schematically showing a first example of the configuration of the display device according to the seventh embodiment;
- FIG. 24 is a block diagram schematically showing a second example of the configuration of the display device according to the seventh embodiment.
- FIG. 25 is a block diagram schematically showing an example of the configuration of the display device according to the eighth embodiment;
- FIG. 26 is a block diagram schematically showing a first example of the configuration of the display device according to the ninth embodiment.
- FIG. 27 is a block diagram schematically showing a second example of the configuration of the display device according to the ninth embodiment.
- a plurality of scanning signal lines and a plurality of image signal lines are arranged in a grid pattern, and a plurality of pixel portions are arranged in a matrix so as to correspond to intersections of the plurality of scanning signal lines and the plurality of image signal lines.
- a display device having an image display section with a
- the line width of the image signal line becomes narrower. It is supplied only up to the point, and a defect in image display may occur.
- a circuit for connecting the image signal line and a previously arranged spare signal line (also called a spare signal line) near both ends of the image signal line is arranged outside the image display unit.
- a previously arranged spare signal line also called a spare signal line
- one display also called a tiling display
- a display panel for example, when the display panel is viewed from above, an image is displayed between an area in which a plurality of pixel portions are arranged (also called an effective area) and an end portion of a substrate that constitutes the display panel.
- a display panel having a structure also referred to as a frameless structure in which an image display portion is arranged on the entire surface of one side of a substrate that constitutes the display panel.
- wiring also referred to as signal lines
- the wiring includes, for example, wiring located on the back surface side of the display panel (also referred to as back surface wiring) and wiring located on the side surface of the display panel (also referred to as side surface wiring).
- the side wiring can be formed, for example, by applying a conductive paste to the side surface of a substrate such as glass and baking the paste.
- the pitch of the plurality of pixel portions in the display panel is several tens of micrometers ( ⁇ m)
- the pitch of the plurality of side wirings is also several tens of ⁇ m.
- the side wiring may break as the side wiring becomes thinner.
- such disconnection may occur not only in side wiring but also in wiring in general, such as back wiring, which supplies signals from the back side to the image display section as the wiring becomes thinner.
- a wire that supplies an image signal to a plurality of pixel portions is broken, when an image is displayed on the image display portion, the image signal is not supplied to one column of the pixel portion, resulting in a problem of darkening (also referred to as dark lines) or a defect of high brightness (also referred to as bright lines) may occur, degrading the image quality.
- a problem of darkening also referred to as dark lines
- a defect of high brightness also referred to as bright lines
- an image signal line and a preliminary signal line are arranged near both ends of the image signal line. , and may be arranged outside the image display section.
- a preliminary signal line also referred to as a preliminary signal line
- disconnection occurs in the wiring outside the image display section such as the side surface and the back surface of the substrate, even if both ends of the image signal line and the spare signal line are connected in the image display section, Unable to cope with disconnection.
- the display device has room for improvement in terms of reducing deterioration in image quality due to disconnection of signal lines outside the image display unit.
- the inventors of the present disclosure have created a technique that can reduce deterioration in image quality due to disconnection of signal lines outside the image display unit for display devices.
- FIG. 1 to 4 are labeled with a right-handed XYZ coordinate system.
- this XYZ coordinate system one direction along the first surface 10a of the substrate 10 is the +X direction, one direction orthogonal to the +X direction along the first surface 10a is the +Z direction, and is perpendicular to the first surface 10a. is the +Y direction.
- FIG. 1 is a front view schematically showing an example of a tiling display 900 according to each embodiment.
- the tiling display 900 has, for example, a plurality of display devices 100 arranged in tiles.
- the tiling display 900 has a plurality of display devices 100 arranged in a matrix along the XZ plane.
- Each of the plurality of display devices 100 is, for example, a flat display panel.
- FIG. 2 is a side view schematically showing an example of the display device 100 according to each embodiment.
- FIG. 3 is a back view schematically showing an example of the display device 100 according to each embodiment.
- the display device 100 includes, for example, a substrate 10, an image display section 20, a drive section 30, and a plurality of drive signal lines 3.
- the substrate 10 has, for example, a first surface (also referred to as a first main surface) 10a, a second surface (also referred to as a second main surface) 10b, and a plurality of side surfaces 10c.
- the second surface 10b is a surface opposite to the first surface 10a.
- the plurality of side surfaces 10c connect the first surface 10a and the second surface 10b, respectively.
- a flat substrate for example, is applied to the substrate 10 .
- a rectangular surface having four sides for example, is applied to each of the first surface 10a and the second surface 10b.
- the multiple side surfaces 10c include a first side surface 10c1, a second side surface 10c2, a third side surface 10c3, and a fourth side surface 10c4.
- the first side surface 10c1 connects the first side E1a of the first surface 10a and the first side E1b of the second surface 10b.
- the first side surface 10c1 is a surface having a first side E1a and a first side E1b as two opposing sides.
- the second side surface 10c2 connects the second side E2a of the first surface 10a and the second side E2b of the second surface 10b.
- the second side surface 10c2 is a surface having the second side E2a and the second side E2b as two opposing sides.
- the third side surface 10c3 connects the third side E3a of the first surface 10a and the third side E3b of the second surface 10b.
- the third side surface 10c3 is a surface having the third side E3a and the third side E3b as two opposing sides.
- the fourth side surface 10c4 connects the fourth side E4a of the first surface 10a and the fourth side E4b of the second surface 10b.
- the fourth side surface 10c4 is a surface having the fourth side E4a and the fourth side E4b as two opposing sides.
- the first surface 10a is a flat surface along the XZ plane and faces the -Y direction.
- the second surface 10b is a flat surface along the XZ plane and faces the +Y direction.
- the first side surface 10c1 faces the +Z direction.
- the second side surface 10c2 faces the -X direction.
- the third side surface 10c3 faces the -Z direction.
- the fourth side surface 10c4 faces the +X direction.
- a glass plate for example, is applied to the substrate 10 .
- the glass plate may or may not be transparent.
- the substrate 10 is, for example, a colored glass substrate, a ground glass substrate, a plastic substrate, a ceramic substrate, a metal substrate, or a composite substrate in which two or more of these substrates are laminated. may apply.
- the image display unit 20 can display images, for example. In other words, when the display device 100 is viewed from above, the portion where the image is displayed corresponds to the image display section 20 .
- the image display unit 20 is positioned, for example, on the first surface 10a side of the substrate 10 .
- the image display unit 20 is positioned, for example, so as to cover the entire surface of the first surface 10a.
- the display device 100 has a structure in which the image display section 20 is arranged on the entire surface of the first surface 10a side of the substrate 10 (also referred to as a frameless structure), or a frame portion is narrowed as much as possible. It has a narrow frame structure.
- the drive unit 30 is positioned on the second surface 10b side of the substrate 10, for example.
- a driving element such as an integrated circuit (IC) or a large-scale integrated circuit (LSI) is mounted on the substrate 10 in a chip-on-glass (COG) method. It can be formed by being mounted on the surface 10b.
- the drive unit 30 may be, for example, a circuit board on which drive elements are mounted.
- the drive unit 30 is formed of low temperature polysilicon (Low Temperature Poly Silicon) directly on the second surface 10b of the substrate 10 by a thin film formation method such as a chemical vapor deposition (CVD) method.
- a thin film circuit also referred to as a thin film circuit including a thin film transistor (TFT) having a semiconductor layer of LTPS) may be used.
- the drive unit 30 may be a drive element arranged on a flexible printed circuit (FPC) connected to connection terminals formed on the second surface 10 b of the substrate 10 .
- FPC flexible printed circuit
- the plurality of drive signal lines 3 are positioned so as to extend from the second surface 10b side of the substrate 10 to the first surface 10a side via the side surface 10c. Each of the plurality of drive signal lines 3 is positioned to connect between the drive unit 30 on the second surface 10b side of the substrate 10 and the image display unit 20 on the first surface 10a side of the substrate 10. .
- the plurality of drive signal lines 3 are the wiring (also referred to as back wiring) located on the second surface 10b of the substrate 10 and the wiring located on the side surface 10c of the substrate 10. (also referred to as side wiring).
- FIG. 4 is a diagram schematically showing an example of the layout of each part constituting the image display section 20 in the IV section of the display device 100 of FIG.
- the image display unit 20 includes a plurality of pixel units 2, for example.
- the image display section 20 is configured by a plurality of pixel sections 2 arranged in a matrix.
- a plurality of rectangular pixel portions 2 are arranged so as to be spread out. More specifically, for example, the direction in which the light emission control signal line (also referred to as the image signal line) 5 (see FIG. 5) extends (also referred to as the image signal line direction and the first extending direction).
- a column (also called a pixel portion column) C1 of a plurality of pixel portions 2 each constituted by a plurality of pixel portions 2 arranged in the ⁇ Z direction is connected to a scanning signal line (also called a gate signal line) 6 (FIG. 5, etc.). ) are aligned in the +X direction, which is the direction in which they extend (also referred to as the scanning line direction or the second extending direction).
- a row (also referred to as a pixel portion row) R1 of a plurality of pixel portions 2 each configured by a plurality of pixel portions 2 arranged in the +X direction as the second extending direction is the first extending direction. They are arranged in the -Z direction as a direction.
- Each of the plurality of pixel units 2 includes, for example, a first sub-pixel unit 2r, a second sub-pixel unit 2g and a third sub-pixel unit 2b.
- the first sub-pixel portion 2r can emit light of a first color, for example.
- the second sub-pixel portion 2g can emit light of a second color different from the first color, for example.
- the third sub-pixel portion 2b can emit light of a third color different from the first and second colors, for example. For example, red is applied to the first color, green is applied to the second color, and blue is applied to the third color.
- Each of the first sub-pixel portion 2r, the second sub-pixel portion 2g, and the third sub-pixel portion 2b includes, for example, a light-emitting element, a light emission control section that controls light emission, non-light emission, and light emission intensity of the light-emitting element, have
- the light emitting element for example, a micro light emitting diode (LED) element or an organic electroluminescence (EL) element is applied.
- the light emitting element is located, for example, on an insulating layer arranged on the first surface 10a of the substrate 10 .
- the light emitting element is electrically connected to the light emission control section, the positive voltage input line, and the negative voltage input line via through conductors such as through holes penetrating the insulating layer arranged in the pixel section 2, for example.
- a positive electrode of the light emitting element is connected to a positive voltage input line via, for example, the first through conductor and the light emission control section.
- a negative electrode of the light emitting element is connected to a negative voltage input line, for example, via a second through conductor.
- the light emission control unit is located between the insulating layer positioned between the light emitting element and the first surface 10a and the first surface 10a. placed in The light emission control unit has, for example, a first transistor, a second transistor, and a capacitive element.
- the first transistor functions, for example, as a switch for inputting a drive signal to the light emitting element.
- a P-channel transistor also referred to as a P-channel transistor
- a gate electrode of the first transistor is connected to a scanning signal line 6 (see FIG. 5, etc.).
- a source electrode of the first transistor is connected to a light emission control signal line 5 (see FIG. 5, etc.).
- a drain electrode of the first transistor is connected to a gate electrode of the second transistor.
- an on-signal (L (Low) signal: about -3 to 0 V) as a scanning signal from the scanning signal line 6
- a state in which current can flow between them (also called a conductive state) is established.
- a light emission control signal (L (Low) signal: Vg) from the light emission control signal line 5 is input to the gate electrode of the second transistor.
- the second transistor has a positive voltage (anode voltage: about 3 to 5 V) and a negative voltage (cathode voltage: -3 to 0 V). It functions as a driving element that current-drives the light emitting element by a potential difference (driving signal) between the light emitting element and the driving signal.
- a P-channel transistor for example, is applied to the second transistor. In this case, the source electrode of the second transistor is connected to the positive voltage input line. A drain electrode of the second transistor is connected to the negative voltage input line through the light emitting element.
- the second transistor when the L signal as the image signal from the light emission control signal line 5 is input to the gate electrode, the second transistor becomes conductive.
- a driving signal VDD: about 3 to 5 V
- VDD the driving signal
- the light emitting element emits light.
- the light emission intensity (luminance) of the light emitting element can be controlled by controlling the level (voltage) of the image signal (Vg).
- the capacitive element is arranged, for example, on a connection line connecting the gate electrode and the source electrode of the second transistor.
- This capacitive element functions, for example, as a holding capacitor that holds the voltage of the image signal input to the gate electrode of the second transistor for a period (one frame period) until the next image signal is input (also referred to as rewriting).
- the light emission control unit may have, for example, a third transistor that is arranged between the second transistor and the light emitting element and that controls light emission or non-light emission of the light emitting element.
- a P-channel transistor for example, is applied to the third transistor.
- the source electrode of the third transistor is connected to the drain electrode of the second transistor.
- a drain electrode of the third transistor is connected to a positive electrode of the light emitting element.
- the third transistor when the L signal as the light emission control signal is input to the gate electrode, the third transistor becomes conductive.
- the drive signal (VDD) is input from the positive voltage input line to the light emitting element through the second transistor and the third transistor, and the light emitting element emits light.
- the image display section 20 includes, for example, an image signal line driving section 2h and a scanning signal line driving section 2v.
- the image signal line driving section 2h can supply image signals to a plurality of light emission control signal lines 5, for example.
- the scanning signal line driving section 2v can supply scanning signals to a plurality of scanning signal lines 6, for example.
- a shift register or the like is applied to the scanning signal line driving section 2v.
- each of the plurality of pixel units 2 includes a first sub-pixel unit 2r, a second sub-pixel unit 2g, and a third sub-pixel unit 2b.
- the image signal line driving section 2h is arranged, for example, in a vacant area 2s in a plurality of pixel sections 2 while being divided into a plurality of portions.
- the image signal line driving section 2h is arranged in a state divided into a plurality of portions in an empty region 2s in a plurality of pixel sections 2 constituting one or more pixel section rows R1 of the image display section 20. ing.
- the image signal line driving section 2h is divided into a plurality of portions in the empty areas 2s in the plurality of pixel sections 2 constituting the two pixel section rows R1 of the image display section 20.
- the image signal line driving section 2h drives the empty regions 2s in the plurality of pixel sections 2 of the two pixel section rows R1 located along the +Z direction edge of the image display section 20. are arranged in a state divided into a plurality of parts.
- the image signal line driving section 2h is arranged in a state of being divided into a plurality of portions, for example, in an empty area 2s in a plurality of pixel sections 2 constituting two or more pixel section rows R1 of the image display section 20. may be
- the scanning signal line driving section 2v is arranged, for example, in a vacant area 2s in a plurality of pixel sections 2 while being divided into a plurality of portions.
- the scanning signal line driving section 2v is arranged in a state of being divided into a plurality of portions in an empty area 2s in a plurality of pixel sections 2 constituting one or more pixel section columns C1 of the image display section 20. ing.
- the scanning signal line driving section 2v is divided into a plurality of portions in the empty areas 2s in the plurality of pixel sections 2 constituting the two pixel section columns C1 of the image display section 20.
- the scanning signal line driving section 2v drives the empty regions in the plurality of pixel sections 2 of the two pixel section columns C1 located along the -X direction end of the image display section 20. 2s, which is divided into several parts.
- the scanning signal line driving section 2v is arranged in a state of being divided into a plurality of portions, for example, in an empty region 2s in a plurality of pixel sections 2 constituting two or more pixel section columns C1 of the image display section 20. may be
- FIG. 5 is a block diagram schematically showing an example of the configuration of the display device 100 according to the first embodiment.
- the display device 100 includes, for example, an image display section 20, a plurality of drive signal lines 3, and a drive section 30.
- the display device 100 includes, for example, an image display section 20, a plurality of drive signal lines 3, and a drive section 30.
- the image display unit 20 includes, for example, multiple pixel units 2 and multiple light emission control signal lines 5 .
- the plurality of pixel units 2 includes, for example, pixel units 2 of m rows ⁇ n columns.
- n and m are each a natural number of 4 or more.
- the plurality of pixel portions 2 includes, for example, a plurality of pixel portion rows R1 each formed by n pixel portions 2, and a plurality of pixel portion columns C1 each formed by m pixel portions 2. including.
- the plurality of pixel units 2 has m pixel unit rows R1 and n pixel unit columns C1.
- the m pixel part rows R1 include, for example, a first pixel part row R11, a second pixel part row R12, a third pixel part row R13, . .
- the n pixel part columns C1 include, for example, a first pixel part column C11, a second pixel part column C12, a third pixel part column C13, .
- Each of the plurality of light emission control signal lines 5 can supply an image signal to, for example, a column (pixel section column) C1 of the pixel section 2 among the plurality of pixel sections 2 .
- an image signal can be supplied to the plurality of light emission control signal lines 5 from the image signal line driving section 2h.
- the multiple emission control signal lines 5 include, for example, a first emission control signal line 5r, a second emission control signal line 5g, and a third emission control signal line 5b for each pixel section column C1.
- the first emission control signal line 5r can supply an image signal to the first sub-pixel portion 2r, for example.
- the second emission control signal line 5g can supply an image signal to the second sub-pixel portion 2g, for example.
- the third emission control signal line 5b can supply an image signal to the third sub-pixel portion 2b, for example.
- n sets of emission control signal lines 5 each including the first emission control signal line 5r, the second emission control signal line 5g, and the third emission control signal line 5b are provided for the n pixel section columns C1.
- group (also referred to as light emission control signal line group) 50 exists. More specifically, the n groups of emission control signal lines 50 are, for example, a first emission control signal line group 501, a second emission control signal line group 502, a third emission control signal line group 503, . It includes an n-th emission control signal line group 50n. In other words, the plurality of emission control signal lines 5 includes 3 ⁇ n emission control signal lines 5 .
- each pixel section column C1 includes m pixel sections 2 arranged along one emission control signal line group 50 .
- the first pixel section column C11 includes m pixel sections 2 arranged along the first emission control signal line group 501 .
- the second pixel section column C12 includes m pixel sections 2 arranged along the second emission control signal line group 502 .
- the third pixel section column C13 includes m pixel sections 2 arranged along the third emission control signal line group 503 .
- the n-th pixel unit column C1n includes m pixel units 2 arranged along the n-th emission control signal line group 50n.
- the first emission control signal line 5r supplies an image signal to the m first sub-pixel portions 2r of one pixel portion column C1, and the second emission is performed.
- a control signal line 5g supplies an image signal to m second sub-pixel portions 2g of one pixel portion column C1, and a third light emission control signal line 5b supplies m third sub-pixel portions 2g of one pixel portion column C1.
- An image signal can be supplied to the sub-pixel portion 2b.
- the first emission control signal line 5r supplies image signals to the m first sub-pixel portions 2r of the first pixel portion column C11
- the second emission control signal line 5g supplies an image signal to the m second sub-pixel portions 2g of the first pixel portion column C11
- the third emission control signal line 5b supplies the m second sub-pixel portions 2g of the first pixel portion column C11.
- An image signal can be supplied to the third sub-pixel portion 2b.
- the first emission control signal line 5r supplies image signals to the m first sub-pixel portions 2r of the second pixel portion column C12
- the second emission control signal line 5g supplies image signals to the m second sub-pixel portions 2g of the second pixel portion column C12
- the third emission control signal line 5b supplies the m third sub-pixel portions of the second pixel portion column C12. 2b may be provided with an image signal.
- the first emission control signal line 5r supplies image signals to the m first sub-pixel portions 2r of the third pixel portion column C13
- the second emission control signal line 5g supplies image signals to the m second sub-pixel portions 2g of the third pixel portion column C13
- the third emission control signal line 5b supplies the m third sub-pixel portions of the third pixel portion column C13. 2b may be provided with an image signal.
- the first emission control signal line 5r supplies image signals to the m first sub-pixel portions 2r of the n-th pixel portion column C1n
- the second emission control signal line 5g supplies image signals to the m second sub-pixel units 2g of the n-th pixel unit column C1n
- the third emission control signal line 5b supplies m third sub-pixel units of the n-th pixel unit column C1n. 2b may be provided with an image signal.
- the image display unit 20 includes a plurality of scanning signal lines 6, for example.
- Each of the plurality of scanning signal lines 6 can supply a scanning signal to, for example, a row (pixel section row) R1 of the pixel section 2 among the plurality of pixel sections 2 .
- Scanning signals can be supplied to the plurality of scanning signal lines 6 in a time-sequential manner (line-sequential manner) from the scanning signal line driving section 2v, for example.
- the plurality of scanning signal lines 6 includes m scanning signal lines 6, for example. More specifically, the plurality of scanning signal lines 6 includes, for example, a first scanning signal line 61, a second scanning signal line 62, a third scanning signal line 63, . . .
- each pixel section row R1 includes n pixel sections 2 arranged along one scanning signal line 6 .
- the first pixel unit row R11 includes n pixel units 2 arranged along the first scanning signal line 61 .
- the second pixel portion row R12 includes n pixel portions 2 arranged along the second scanning signal line 62 .
- the third pixel section row R13 includes n pixel sections 2 arranged along the third scanning signal line 63 .
- the m-th pixel portion row R1m includes n pixel portions 2 arranged along the m-th scanning signal line 6m.
- the first scanning signal line 61 can supply scanning signals to the n pixel units 2 in the first pixel unit row R11.
- the second scanning signal line 62 can supply scanning signals to the n pixel units 2 in the second pixel unit row R12.
- the third scanning signal line 63 can supply scanning signals to the n pixel units 2 in the third pixel unit row R13.
- the m-th scanning signal line 6m can supply scanning signals to the n pixel units 2 in the m-th pixel unit row R1m.
- a scanning signal is supplied to each of the first sub-pixel section 2r, the second sub-pixel section 2g, and the third sub-pixel section 2b through one scanning signal line 6.
- the plurality of drive signal lines 3 can supply an image signal to each of the plurality of emission control signal lines 5, for example.
- the plurality of drive signal lines 3 includes n drive signal lines 3, for example. More specifically, the multiple drive signal lines 3 include, for example, a first drive signal line 31, a second drive signal line 32, a third drive signal line 33, . . . , an nth drive signal line 3n.
- the first drive signal line 31 is the first emission control signal line 5r, the second emission control signal line 5g, and the third emission control signal line 5b located along the first pixel section column C11. An image signal can be supplied to each.
- the second drive signal line 32 is connected to each of the first emission control signal line 5r, the second emission control signal line 5g, and the third emission control signal line 5b located along the second pixel section column C12.
- signal can be provided.
- the third drive signal line 33 outputs an image to each of the first emission control signal line 5r, the second emission control signal line 5g, and the third emission control signal line 5b located along the third pixel section column C13.
- signal can be provided.
- the n-th drive signal line 3n supplies an image to each of the first emission control signal line 5r, the second emission control signal line 5g, and the third emission control signal line 5b located along the n-th pixel section column C1n. signal can be provided.
- Each of the plurality of drive signal lines 3 includes, for example, a first wiring portion 3b, a second wiring portion 3c, and a third wiring portion 3a.
- the first wiring portion 3b is a portion located on the second surface 10b (also referred to as a back surface wiring portion).
- the second wiring portion 3c is a portion located on the side surface 10c (also referred to as a side wiring portion).
- the third wiring portion 3a is a portion located on the first surface 10a (also referred to as a front wiring portion).
- the first wiring portion 3b is connected to the driving section 30, for example.
- a first wiring portion 3b, a second wiring portion 3c, and a third wiring portion 3a are connected in series in this order.
- the first wiring portion 3b is connected to a conductive first connection portion arranged along the side surface 10c on the second surface 10b.
- the second wiring portion 3c is connected to the first connecting portion and also to a conductive second connecting portion arranged along the side surface 10c on the first surface 10a.
- the third wiring portion 3a is connected to the second connection portion.
- a conductor pad also referred to as a conductor pad, for example, is applied to each of the first connection portion and the second connection portion.
- a conductor material such as copper (Cu), aluminum (Al), silver (Ag), or gold (Au) is applied to the material of the conductor pad.
- the conductor pads can be formed, for example, by a thin film forming method such as plating, vapor deposition, or CVD, or a thick film forming method in which a conductive paste is applied by printing and then baked.
- the conductive paste contains, for example, particles of a conductive material, an uncured resin component, an alcoholic solvent and water.
- the second wiring portion 3c is applied to the conductive paste applied in a desired pattern on the side surface 10c by a process of drying and firing by heating, a process of curing by heating, and a process of curing by irradiation with light such as ultraviolet rays.
- it can be formed by applying a treatment of curing by heating and light irradiation.
- the second wiring portion 3c may be formed, for example, by a thin film forming method such as plating, vapor deposition, or CVD.
- the conductive paste can be easily applied to the desired grooves on the side surface 10c.
- the second wiring portion 3c may be wider and/or thicker than either the first wiring portion 3b or the third wiring portion 3a.
- the width of the second wiring portion 3c is , the first wiring portion 3b and the third wiring portion 3a.
- the resistance of the second wiring portion 3c is determined by the first wiring portion 3b and the third wiring portion, which can be formed by a thin film forming method. Compared with each resistor of 3a, it tends to be larger if the thickness is the same.
- the increase in resistance of the second wiring portion 3c is suppressed, and it becomes easy to match the resistances of the first wiring portion 3b and the third wiring portion 3a. That is, it is possible to suppress an increase in connection resistance (contact resistance) between the second wiring portion 3c and the first wiring portion 3b and the third wiring portion 3a. Also, in this case, the adhesion strength of the second wiring portion 3c formed by applying and baking the conductive paste to the first connecting portion (pad) and the second connecting portion (pad) can be increased.
- the width of the second wiring portion 3c may be more than 1 time and about 5 times or less of each width of the first wiring portion 3b and the third wiring portion 3a, but the width is not limited to this range.
- the thickness of the second wiring portion 3c is equal to that of the first wiring portion 3b and the third wiring. It may be configured to be thicker than each thickness of the portion 3a.
- the thickness of the second wiring portion 3c may be more than 1 time and about 10 times or less of each thickness of the first wiring portion 3b and the third wiring portion 3a, but the thickness is not limited to this range.
- the mechanical strength of the second wiring portion 3c formed by applying and firing the conductive paste can be increased.
- the width of the second wiring portion 3c may be equal to or greater than the width of each of the first connecting portion and the second connecting portion. In this case, the adhesion strength between the second wiring portion 3c and each of the first connection portion and the second connection portion is improved, and the connection resistance is reduced. Further, the second wiring portion 3c may cover each of the first connecting portion and the second connecting portion. In this case, the adhesion strength between the second wiring portion 3c and each of the first connection portion and the second connection portion is further improved, and the connection resistance is further reduced.
- the second wiring portion 3c may be wider and thicker than both the first wiring portion 3b and the third wiring portion 3a. Furthermore, for the same purpose, the second wiring portion 3c may be configured to be shorter than both the first wiring portion 3b and the third wiring portion 3a. The above configuration is more effective if the second wiring portion 3c has the same width and thickness as the first wiring portion 3b and the third wiring portion 3a.
- the second wiring portion 3c may be covered with a protective layer.
- the material of the protective layer may be resin such as acrylic resin or polycarbonate resin, or inorganic compound such as silicon oxide (SiO 2 ) or silicon nitride (Si 3 N 4 ).
- the protective layer may contain black and conductive components such as carbon particles. In this case, the conductivity of the second wiring portion 3c is improved, and the narrow frame portion between the end portion of the first surface 10a and the image display section 20 becomes inconspicuous.
- a protective layer covering a certain second wiring portion 3c and a protective layer covering a second wiring portion 3c adjacent to the certain second wiring portion 3c may not be in contact with each other.
- the protective layer has conductivity, it is possible to prevent a certain second wiring portion 3c from being short-circuited with the second wiring portion 3c adjacent thereto.
- the protective layer covering a certain second wiring portion 3c and the protective layer covering a second wiring portion 3c adjacent to the certain second wiring portion 3c are separated from each other. They may be in contact with each other or may be continuous.
- the first wiring portion 3b is connected to the driving portion 30 located in the central portion of the second surface 10b of the substrate 10, so the length of the first wiring portion 3b is equal to that of the third wiring portion. It may be longer than the length of 3a. In that case, if the material of the first wiring portion 3b and the material of the third wiring portion 3a are the same, the first wiring portion 3b may be wider and/or thicker than the third wiring portion 3a. There may be. With this configuration, the resistance of the drive signal line 3 can be reduced by reducing the resistance of the first wiring portion 3b.
- the length of the first wiring portion 3b is longer than the length of the third wiring portion 3a.
- the first wiring portion 3b may be linear. In this configuration, the length of the first wiring portion 3b can be minimized and the resistance of the first wiring portion 3b can be reduced.
- the first wiring portion 3b may have a lower specific resistance (resistivity) than the third wiring portion 3a.
- Various metals represented by the International Annealed Copper Standard (IACS%) which is the conductivity (reciprocal of resistivity) when the resistivity of annealed copper is 16.78 n ⁇ m (nano-ohm-meter).
- IACS% International Annealed Copper Standard
- the conductivity of the alloy is shown below. silver (105.7%), annealed copper (100.0%), gold (75.8%), aluminum (59.5%), tungsten (31.8%), molybdenum (31.4%), zinc ( 28.4%), nickel (24.2%), indium (20.0%), iron (17.5%), platinum (16.0%), palladium (15.9%), tin (14.
- the material of the first wiring portion 3b may be silver, and the material of the third wiring portion 3a may be annealed copper or aluminum.
- the material of the first wiring portion 3b may be annealed copper, and the material of the third wiring portion 3a may be aluminum.
- the material of the first wiring portion 3b may be aluminum, and the material of the third wiring portion 3a may be molybdenum.
- the driving section 30 can supply an image signal to each of the plurality of driving signal lines 3, for example.
- the drive unit 30 can supply image signals to each of the plurality of light emission control signal lines 5 via the plurality of drive signal lines 3, for example.
- the image display unit 20 includes a plurality of switching units 7, for example.
- a plurality of switching units 7 are included in the image signal line driving unit 2h.
- one switching unit 7 is connected to each of the plurality of drive signal lines 3 .
- one switching unit 7 is connected to each of the plurality of drive signal lines 3 .
- the multiple switching units 7 include, for example, n switching units 7 .
- the n switching units 7 include, for example, a first switching unit 71, a second switching unit 72, a third switching unit 73, . . . , an n-th switching unit 7n.
- the first drive signal line 31 is connected to the first switching unit 71 , and the first light emission control signal line 5 r and the second light emission control signal in the first light emission control signal line group 501 are connected from the first drive signal line 31 .
- a state can be set in which an image signal can be supplied to the line 5g and the third emission control signal line 5b.
- the second switching unit 72 is connected to, for example, the second drive signal line 32 , and from the second drive signal line 32 to the first emission control signal line 5 r and the second emission control signal in the second emission control signal line group 502 .
- a state can be set in which an image signal can be supplied to the line 5g and the third emission control signal line 5b.
- the third switching unit 73 is connected to, for example, the third drive signal line 33 , and from the third drive signal line 33 to the first emission control signal line 5 r and the second emission control signal in the third emission control signal line group 503 .
- a state can be set in which an image signal can be supplied to the line 5g and the third emission control signal line 5b.
- the n-th switching section 7n is connected to, for example, the n-th drive signal line 3n.
- a state can be set in which an image signal can be supplied to the line 5g and the third emission control signal line 5b.
- each of the plurality of switching units 7 for example, in addition to one normal drive signal line (also referred to as normal drive signal line) 3 out of the plurality of drive signal lines 3, this one normal drive signal line is provided. At least one or more separate drive signal lines (also referred to as separate drive signal lines) 3 different from the signal line 3 are connected. In other words, for example, at least one normal drive signal line 3 and one or more separate drive signal lines 3 are connected to the corresponding light emission control signal lines 5 via the switching section 7 . That is, one switching unit 7 operates so that at least one of one normal drive signal line 3 and one or more separate drive signal lines 3 is conductively connected to the corresponding light emission control signal line 5.
- Each of the plurality of switching units 7 supplies an image signal to the corresponding emission control signal line 5 of the plurality of emission control signal lines 5, for example, from the drive unit 30 via one normal drive signal line 3.
- a state of possible conduction also referred to as a first conduction state
- a conductive state also referred to as a second conductive state in which an image signal can be supplied to the corresponding light emission control signal line 5 can be set.
- each of the plurality of switching units 7 can be selectively set to either the first conduction state or the second conduction state, for example.
- the switching unit 7 arranged in the image display unit 20 supplies the image signal via the separate drive signal line 3 .
- An image signal can be supplied to the light emission control signal line 5 .
- a problem of darkening (dark line) or a problem of high brightness (bright line) due to no image signal being supplied is less likely to occur. Therefore, for example, in the display device 100, degradation in image quality due to disconnection of the drive signal line 3 outside the image display section 20 can be reduced.
- Each of the plurality of switching units 7 can be selectively set to at least one of the first conduction state and the second conduction state.
- each of the plurality of switching units 7 can be set to a plurality of conduction states, including a first conduction state and a second conduction state.
- one switching section 7 is in a conducting state (for example, , referred to as the third conduction state).
- a dithering effect that suppresses a large difference in signal intensity between the light emission control signal lines 5 can be imparted by logically operating and inputting a plurality of image signals to the corresponding light emission control signal lines 5. can.
- the logic operation can be performed by adopting a configuration such as providing a logic circuit section between the drive section 30 and the normal drive signal line 3 to reduce the difference in signal intensity between a plurality of image signals.
- one switching unit 7 can supply an inspection signal from the drive unit 30 to the corresponding light emission control signal line 5 via an inspection signal line different from the normal drive signal line 3 and the separate drive signal line 3.
- a state of conduction (for example, referred to as a fourth conduction state) may be selected.
- the conduction state of each of the drive signal lines 3 is inspected. is input, the display device in which the drive signal line 3 that is dark is excluded, and the manufacturing yield can be improved.
- one normal drive signal line 3 and one or more separate drive signal lines 3 are connected to the corresponding one or more light emission control signal lines 5 via the switching unit 7.
- one of the normal drive signal line 3 and one or more separate drive signal lines 3 is conductively connected to the corresponding one or more light emission control signal lines 5. may operate as if
- one or more separate drive signal lines 3 are one or more drive signal lines 3 among the plurality of drive signal lines 3 .
- a preliminary drive signal line also referred to as a redundant drive signal line
- the drive signals outside the image display section 20 can be generated.
- a reduction in image quality due to disconnection of the line 3 can be reduced.
- the layout of circuits and wiring in the display device 100 is less likely to be complicated. Also, for example, the risk of disconnection of redundant drive signal lines is less likely to occur.
- an image to be displayed on the display device 100 is of high definition, a plurality of pixels that emit light according to image signals originally supplied from the drive unit 30 via the normal drive signal line 3 are arranged. Even if the unit 2 emits light according to the image signal supplied from the drive unit 30 via the separate drive signal line 3, it is not conspicuous.
- one normal drive signal line 3 and one separate drive signal line 3 are connected to each of the plurality of switching units 7 .
- the first switching unit 71 is connected to, for example, the first drive signal line 31 as one normal drive signal line 3 and the first drive signal line 31 as one separate drive signal line 3 .
- 2 drive signal lines 32 are connected via connection wirings W1.
- the second switching unit 72 is connected to, for example, a second drive signal line 32 as one normal drive signal line 3, and a third drive signal line 33 as one separate drive signal line 3. They are connected via a connection wiring W1.
- the (n ⁇ 1)th drive signal line 3(n ⁇ 1) as one normal drive signal line 3 is connected to the (n ⁇ 1)th switching section 7(n ⁇ 1) not shown in the drawing. are connected, and an n-th drive signal line 3n as one separate drive signal line 3 is connected via a connection wiring W1.
- an n-th drive signal line 3n as one normal drive signal line 3 is connected to the n-th switching section 7n, and an n-th drive signal line 3n (not shown) is connected as one separate drive signal line 3.
- the drive signal line 3(n-1) may be connected via the connection wiring W1.
- one separate drive signal line 3 connected to the switching portion 7 is connected to one of the plurality of drive signal lines 3 connected to the switching portion 7. It is the drive signal line 3 located next to the normal drive signal line 3 of the book.
- one normal drive signal line 3 and one separate drive signal line 3 connected to each switching section 7 provide two normal drive signals for two adjacent pixel section columns C1. line 3;
- the image display unit 20 includes a plurality of selector units 8, for example.
- a plurality of selector units 8 are included in the image signal line drive unit 2h.
- one selector unit 8 is connected to each of the plurality of switching units 7 via the connection wiring 4 .
- one selector unit 8 is connected to each of the plurality of switching units 7 via the connection wiring 4 .
- the multiple selector units 8 include, for example, n selector units 8 .
- the n selector units 8 include, for example, a first selector unit 81, a second selector unit 82, a third selector unit 83, . . . , an n-th selector unit 8n.
- the first selector section 81 is connected to the first switching section 71 .
- the second selector section 82 is connected to the second switching section 72 .
- the third selector section 83 is connected to the third switching section 73 .
- the n-th selector unit 8n is connected to the n-th switching unit 7n.
- a first emission control signal line 5r, a second emission control signal line 5g, and a third emission control signal line 5b are connected to each of the plurality of selectors 8.
- FIG. From another point of view, for example, one selector section 8 is arranged for each of the plurality of pixel section columns C1.
- the first selector section 81 connects the first emission control signal line 5r, the second emission control signal line 5g and the third emission control signal line 5g located along the first pixel section column C11.
- 5b are connected.
- the second selector section 82 is connected to each of the first emission control signal line 5r, the second emission control signal line 5g, and the third emission control signal line 5b located along the second pixel section column C12.
- the third selector section 83 is connected to each of the first emission control signal line 5r, the second emission control signal line 5g, and the third emission control signal line 5b located along the third pixel section column C13.
- the n-th selector section 8n is connected to each of the first emission control signal line 5r, the second emission control signal line 5g, and the third emission control signal line 5b located along the n-th pixel section column C1n. .
- Each of the plurality of selectors 8 has, for example, a state in which an image signal is supplied from the switching unit 7 to the first emission control signal line 5r, and a state in which an image signal is supplied from the switching unit 7 to the second emission control signal line 5g. , and a state in which an image signal is supplied from the switching unit 7 to the third light emission control signal line 5b in a time division manner.
- a configuration having, for example, three transfer gate elements (also referred to as TG elements) is applied to the selector section 8 .
- the three TG elements include a first TG element, a second TG element, and a third TG element.
- the first TG element is located on the wiring connecting the switching section 7 and the first emission control signal line 5r.
- the second TG element is located on the wiring connecting the switching section 7 and the second emission control signal line 5g.
- the third TG element is located on the wiring connecting the switching section 7 and the third emission control signal line 5b.
- the TG element has a structure in which a P-channel transistor and an N-channel transistor (also referred to as an N-channel transistor) are connected in parallel so that a source electrode and a drain electrode are common.
- a low potential L signal as a first potential is input to the gate electrode of the P-channel transistor and a high potential H signal as a second potential is input to the gate electrode of the N-channel transistor, A state (conductive state) in which current can flow between the source electrode and the drain electrode is established.
- an L signal is input to the gate electrode of the P-channel transistor and an H signal is input to the gate electrode of the N-channel transistor in a time division manner for the first TG element, the second TG element, and the third TG element.
- a signal is input.
- the selector unit 8 is in a state of supplying an image signal from the switching unit 7 to the first emission control signal line 5r, a state of supplying an image signal from the switching unit 7 to the second emission control signal line 5g, A state in which an image signal is supplied from the switching unit 7 to the third light emission control signal line 5b can be set in a time division manner.
- the image display unit 20 includes a plurality of switching setting units 9, for example.
- a plurality of switching setting units 9 are included in the image signal line driving unit 2h.
- One switching setting unit 9 is connected to each of the plurality of switching units 7 .
- one switching setting unit 9 is connected to each of the plurality of switching units 7 .
- one switching setting section 9 is connected to each of the plurality of switching sections 7 via a connection wiring W2.
- one switching setting unit 9 is connected to each of the plurality of switching units 7 via the connection wiring W2.
- the multiple switching setting units 9 include, for example, n switching setting units 9 .
- the plurality of n switching setting units 9 include, for example, a first switching setting unit 91, a second switching setting unit 92, a third switching setting unit 93, . including.
- a first switching setting section 91 is connected to the first switching section 71 .
- a second switching setting section 92 is connected to the second switching section 72 .
- a third switching setting section 93 is connected to the third switching section 73 .
- the n-th switch setting unit 9n is connected to the n-th switch unit 7n.
- a signal can be selectively applied. More specifically, for example, the first switching setting section 91 can selectively apply either the first signal or the second signal to the first switching section 71 .
- the second switching setting section 92 can selectively apply either the first signal or the second signal to the second switching section 72 .
- the third switching setting section 93 can selectively apply either the first signal or the second signal to the third switching section 73 .
- the n-th switch setting unit 9n can selectively apply either the first signal or the second signal to the n-th switch unit 7n.
- each of the plurality of switching units 7 is first conductive by applying the first signal from one of the plurality of switching setting units 9 connected to the switching unit 7 . state, and is set to the second conductive state by applying the second signal from one of the plurality of switching setting units 9 connected to the switching unit 7 .
- the first switching unit 71 is set to the first conductive state by applying the first signal from the first switching setting unit 91, and applying the second signal from the first switching setting unit 91. is set to the second conductive state by
- the second switching unit 72 is set to the first conductive state by applying the first signal from the second switching setting unit 92, and is set to the second conductive state by applying the second signal from the second switching setting unit 92. set.
- the third switching unit 73 is set to the first conductive state by applying the first signal from the third switching setting unit 93, and is set to the second conductive state by applying the second signal from the third switching setting unit 93. set.
- the n-th switching unit 7n is set to the first conductive state by applying the first signal from the n-th switching setting unit 9n, and is set to the second conductive state by applying the second signal from the n-th switching setting unit 9n. set.
- a low potential L signal is applied to the first signal
- a high potential H signal is applied to the second signal.
- FIG. 7 is a circuit diagram showing an example of the switching section 7 and the switching setting section 9. As shown in FIG. In FIG. 7, an x-th (x is a natural number from 1 to n ⁇ 1) switching unit 7x, and an x-th switching setting unit 9x, which is the x-th switching setting unit 9, are shown. exemplified.
- the switching section 7 has, for example, a first gate section 7G1, a second gate section 7G2, a third gate section 7G3, and a signal input section 7I.
- the first gate portion 7G1 is located on a wiring connecting, for example, the x-th drive signal line 3, which is the x-th drive signal line 3x, and the x-th selector section 8, which is the x-th selector section 8x.
- the first gate portion 7G1 for example, in response to the input of one or more specific signals, outputs an image from the x-th drive signal line 3x to the light emission control signal lines 5 in the x-th light emission control signal line group 50x. It can be set to a conducting state to enable the supply of the signal Sx.
- a transfer gate element TG element
- the first electrode on the input side of the first gate portion 7G1 is connected to the x-th drive signal line 3x, and the second electrode on the output side of the first gate portion 7G1 connects the x-th selector section 8x. It is connected to the light emission control signal line 5 via.
- the TG element has a structure in which a P-channel transistor and an N-channel transistor (also referred to as an N-channel transistor) are connected in parallel so that a source electrode and a drain electrode are common.
- the image signal Sx can be supplied from the x-th drive signal line 3x to the emission control signal lines 5 in the x-th emission control signal line group 50x via the first gate portion 7G1.
- the second gate portion 7G2 is located, for example, on the wiring that connects the (x+1)-th drive signal line 3(x+1), which is the x+1-th drive signal line 3, and the x-th selector section 8x.
- the first gate portion 7G1 responds to the input of one or more specific signals, from the (x+1)th drive signal line 3(x+1) to the emission control signal line 5 in the xth emission control signal line group 50x.
- image signal S(x+1) can be set to a conductive state.
- a transfer gate element (TG element) for example, is applied to the second gate portion 7G2.
- the third electrode on the input side of the second gate portion 7G2 is connected to the (x+1)th drive signal line 3(x+1), and the fourth electrode on the output side of the second gate portion 7G2 is connected to the fourth electrode. It is connected to the light emission control signal line 5 via the x selector section 8x.
- the second gate portion 7G2 when a low potential signal (L signal) is input to the gate electrode of the P-channel transistor and a high potential signal (H signal) is input to the gate electrode of the N-channel transistor, the A state (conducting state) in which current can flow between the three electrodes and the fourth electrode is established.
- the image signal S(x+1) can be supplied from the (x+1)th drive signal line 3(x+1) to the light emission control signal line 5 in the xth light emission control signal line group 50x via the second gate portion 7G2. .
- the signal input section 7I is a section to which a signal is input from the outside of the switching section 7, for example.
- a signal is input from the switching setting section 9 to the signal input section 7I.
- the signal input section 7I is connected to, for example, the gate electrode of the P-channel transistor of the first gate portion 7G1 and the gate electrode of the N-channel transistor of the second gate portion 7G2.
- the signal input section 7I is connected to the gate electrode of the N-channel transistor of the first gate section 7G1 and the gate electrode of the P-channel transistor of the second gate section 7G2 via the third gate section 7G3, for example. ing.
- a signal input to the signal input section 7I is applied to the gate electrode of the P-channel transistor of the first gate portion 7G1, the gate electrode of the N-channel transistor of the second gate portion 7G2, and the gate electrode of the third gate portion 7G3. It is given to the part on the input side.
- the third gate portion 7G3 is arranged, for example, on a wiring that connects the signal input portion 7I, the gate electrode of the N-channel transistor of the first gate portion 7G1, and the gate electrode of the P-channel transistor of the second gate portion 7G2. ing.
- the third gate portion 7G3 is positioned between the signal input portion 7I and the gate electrode of the N-channel transistor of the first gate portion 7G1, and is located between the signal input portion 7I and the second gate portion. and the gate electrode of the P-channel transistor of 7G2. Therefore, for example, the input side portion of the third gate portion 7G3 is connected to the signal input portion 7I, and the output side portion of the third gate portion 7G3 is the gate of the N-channel transistor of the first gate portion 7G1.
- the third gate portion 7G3 for example, a NOT gate that inverts the logic level of the voltage of the signal that is input to the input side and outputs it from the output side is applied.
- the third gate section 7G3 inverts the L signal and converts it to an H signal, and converts this H signal to the N channel of the first gate section 7G1. It is applied to the gate electrode of the transistor and the gate electrode of the P-channel transistor of the second gate portion 7G2.
- the third gate portion 7G3 inverts the H signal and converts it to an L signal, and this L signal is applied to the N-channel transistor of the first gate portion 7G1. and the gate electrode of the P-channel transistor of the second gate portion 7G2.
- an L signal is input to the signal input section 7I.
- an L signal is input to the gate electrode of the P-channel transistor and an H signal is input to the gate electrode of the N-channel transistor.
- the first gate portion 7G1 enters a state (conducting state) in which current can flow between the first electrode and the second electrode.
- an H signal is input to the gate electrode of the P-channel transistor, and an L signal is input to the gate electrode of the N-channel transistor.
- the second gate portion 7G2 enters a state (also referred to as a non-conducting state) in which no current flows between the third electrode and the fourth electrode.
- the x-th switching unit 7x is in a state in which the image signal Sx can be supplied to the light emission control signal lines 5 in the x-th light emission control signal line group 50x from the x-th drive signal line 3x via the first gate portion 7G1. (first conductive state).
- an H signal is input to the signal input section 7I, for example.
- the H signal is input to the gate electrode of the P-channel transistor
- the L signal is input to the gate electrode of the N-channel transistor.
- the first gate portion 7G1 enters a state (non-conducting state) in which no current flows between the first electrode and the second electrode.
- an L signal is input to the gate electrode of the P-channel transistor and an H signal is input to the gate electrode of the N-channel transistor.
- the second gate portion 7G2 enters a state (conducting state) in which a current can flow between the third electrode and the fourth electrode.
- the x-th switching unit 7x transfers the image signal S from the (x+1)th drive signal line 3(x+1) to the light emission control signal line 5 in the x-th light emission control signal line group 50x via the second gate portion 7G2.
- (x+1) is set to a state (second conduction state).
- the x-th switching unit 7x is set to the first conductive state by applying the L signal as the first signal from the x-th switching setting unit 9x, and the second signal from the x-th switching setting unit 9x is is set to the second conductive state by application of the H signal to .
- each of the plurality of switching units 7 receives the L signal as the first signal from one of the plurality of switching setting units 9 connected to the switching unit 7 . It is set to the first conduction state, and is set to the second conduction state by applying an H signal as a second signal from one of the plurality of switching setting sections 9 connected to the switching section 7 . be.
- the switching setting section 9 has, for example, a first circuit section 9C1, a second circuit section 9C2, a signal input section 9I, and a signal output section 9U.
- the signal input section 9I is a section to which a signal is input from the outside of the switching setting section 9. A signal is input to the signal input unit 9I from the drive unit 30 via a predetermined wiring, for example.
- CMOS NOT circuit as an inversion logic circuit is applied to the first circuit section 9C1.
- a CMOS NOT circuit for example, a P-channel transistor and an N-channel transistor are connected in series between a positive power supply line applying a positive potential VGH and a negative power supply line applying a negative potential VGL. ing.
- the negative potential VGL may be, for example, a reference potential (GND) or 0 volts.
- the source electrode of the P-channel transistor is connected to the positive power supply line
- the drain electrode of the P-channel transistor is connected to the drain electrode of the N-channel transistor
- the source electrode of the N-channel transistor is connected to the negative power line.
- the portion where the gate electrode of the P-channel transistor and the gate electrode of the N-channel transistor are connected is the input portion (also referred to as the first input portion).
- a portion connected to the drain electrode of the transistor is an output portion (also referred to as a first output portion).
- This CMOS type NOT circuit can invert the logic level of the voltage of the signal input to the first input section and output the signal from the first output section.
- a first input portion of the CMOS NOT circuit is connected to the signal input portion 9I.
- the first circuit section 9C1 also includes a specific wiring portion (also referred to as a specific wiring portion) 9P on the wiring that connects the source electrode of the N-channel transistor and the negative power supply line, for example.
- a specific wiring portion 9P is a portion to be cut, which will be described later.
- the specific wiring portion 9P is located on the insulating layer arranged on the first surface 10a of the substrate 10, the specific wiring portion 9P is melted by laser light irradiation, mechanically cut using a grinding device, or etched. It can be easily cleaved, such as by chemical cleavage using, for example. That is, the specific wiring portion 9P is a conductive/non-conductive fixed selection portion that can be fixed to either the conductive state or the non-conductive state.
- the second circuit section 9C2 has, for example, a buffer circuit section 9B having two cascaded NOT gates 9N1 and 9N2, and a wiring section 9W connected in parallel with the buffer circuit section 9B.
- the second circuit section 9C2 includes, for example, an input section (also referred to as a second input section) connected to the first output section of the first circuit section 9C1 and an output section (also referred to as a second input section) connected to the signal output section 9U. a second output section);
- the buffer circuit portion 9B can stabilize and correct the voltage level of the signal input from the first output portion to the second input portion of the first circuit portion 9C1 and output the same.
- the second circuit unit 9C2 when the L signal is input from the first circuit unit 9C1 to the second input unit, the second circuit unit 9C2 outputs the corrected L signal from the second output unit, and outputs the corrected L signal from the first circuit unit 9C1 to the second input unit.
- a stabilized and corrected H signal can be output from the second output section.
- the x-th switching setting section 9x having the above configuration, for example, it is assumed that an L signal is input to the signal input section 9I.
- the first circuit section 9C1 inverts the L signal and outputs the H signal
- the second circuit section 9C2 outputs the stabilized and corrected H signal.
- the signal output section 9U outputs an H signal to the signal input section 7I of the x-th switching section 7x.
- the x-th switching setting section 9x having the above configuration, it is assumed that an H signal is input to the signal input section 9I, for example.
- the first circuit section 9C1 inverts the H signal and outputs the L signal, and the second circuit section 9C2 outputs the stabilized and corrected L signal.
- the signal output section 9U outputs an L signal to the signal input section 7I of the x-th switching section 7x.
- the switching setting unit 9 outputs an H signal from the signal output unit 9U when an L signal is input to the signal input unit 9I.
- an H signal is input to the signal input section 9I
- an L signal is output from the signal output section 9U.
- the switching setting unit 9 outputs an H signal from the signal output unit 9U when an L signal is input to the signal input unit 9I. is output, and after that, even if an H signal is input to the signal input section 9I, the signal output from the signal output section 9U does not change.
- the switch setting unit 9 plays a role of storing the state in which the second circuit section 9C2 continues to output the H signal from the signal output section 9U.
- the relationship between the input and the output in the switching setting section 9, which changes depending on whether or not the specific wiring portion 9P is cut, is used to set the switching section 7 to the first conduction state or the second conduction state.
- the switching section 7 for example, the relationship between the input and the output in the switching setting section 9, which changes depending on whether or not the specific wiring portion 9P is cut, is used to set the switching section 7 to the first conduction state or the second conduction state. can be set to
- FIG. 8 is a timing chart showing an example of changes in the input and output of the switching setting section 9 in the non-disconnected state.
- the signal XRST input to the signal input unit 9I is set to the L signal and output from the signal output unit 9U.
- signal SEL_sp becomes an H signal.
- the switching setting unit 9 in the non-disconnected state sets the signal XRST input to the signal input unit 9I to H signal, and the signal SEL_sp output from the signal output unit 9U to L signal. becomes.
- the L signal as the first signal is input from the x-th switching setting section 9x in the non-disconnected state to the x-th switching section 7x.
- the x-th switching unit 7x is in a state where the image signal Sx can be supplied from the x-th drive signal line 3x as the normal drive signal line 3 to the light emission control signal line 5 in the x-th light emission control signal line group 50x ( first conduction state).
- FIG. 9 is a timing chart showing an example of changes in the input and output of the switching setting section 9 in the disconnected state.
- the signal XRST input to the signal input unit 9I is set to the L signal and output from the signal output unit 9U.
- the signal SEL_sp becomes an H signal.
- the signal SEL_sp output from the signal output unit 9U is set to H. signal remains.
- the H signal as the second signal is input from the x-th switching setting section 9x in the disconnected state to the x-th switching section 7x.
- the x-th switching unit 7x transfers the image signal S ( x+1) can be supplied (second conductive state).
- the x-th switching setting section 9x changes the signal to be given to the x-th switching section 7x from the L signal of the first potential to the second potential in accordance with the disconnection of the specific wiring portion 9P. It can be set to an H signal of potential.
- each of the plurality of switching setting units 9 outputs the second signal to one switching unit 7 among the plurality of switching units 7 connected to the switching setting unit 9 in response to disconnection of the specific wiring portion 9P.
- the first switching setting section 91 can give the H signal as the second signal to the first switching section 71 in response to disconnection of the specific wiring portion 9P.
- the second switching setting section 92 can give the H signal as the second signal to the second switching section 72 in response to disconnection of the specific wiring portion 9P.
- the third switching setting section 93 can give the H signal as the second signal to the third switching section 73 in response to disconnection of the specific wiring portion 9P.
- the n-th switching setting section 9n can give an H signal as the second signal to the n-th switching section 7n in response to disconnection of the specific wiring portion 9P.
- the x-th switching section 7x can be set to the second conductive state by applying the H signal as the second signal from the x-th switching setting section 9x.
- each of the plurality of switching units 7 receives the H signal as the second signal from one switching setting unit 9 connected to the switching unit 7 among the plurality of switching setting units 9, thereby setting the second switching unit 7 to the second switching unit 7. It can be set to a conducting state. More specifically, for example, the first switching section 71 can be set to the second conductive state by applying an H signal as the second signal from the first switching setting section 91 . For example, the second switching section 72 can be set to the second conductive state by applying the H signal as the second signal from the second switching setting section 92 . For example, the third switching section 73 can be set to the second conductive state by applying the H signal as the second signal from the third switching setting section 93 .
- the n-th switching section 7n can be set to the second conductive state by applying the H signal as the second signal from the n-th switching setting section 9n. If such a configuration is adopted, for example, the scale of the circuit of the switching setting section 9 for changing the setting of the state of conduction in the switching section 7 is unlikely to increase.
- Such processing for setting the switching unit 7 to the second conductive state is performed, for example, when the pixel unit column C1 in which a defective line or bright line has occurred is confirmed in an inspection before shipment of the display device 100. , is executed. At this time, for example, by cutting the specific wiring portion 9P of the switching setting section 9 corresponding to the defective pixel section column C1, the switching section 7 corresponding to the pixel section column C1 is set to the second conductive state. be done.
- the process of setting the switching unit 7 to the second conductive state is executed, for example, when the pixel unit column C1 having a defective line or bright line is confirmed during maintenance such as repair of the display device 100. may be
- the display device 100 includes a plurality of switching units 7 each connected to each of the plurality of drive signal lines 3, and each of the plurality of switching units 7 includes one line.
- a normal drive signal line 3 and one or more separate drive signal lines 3 are connected.
- Each of the plurality of switching units 7 has, for example, a first conductive state in which an image signal can be supplied from the driving unit 30 to the corresponding light emission control signal line 5 via one normal driving signal line 3, and a driving state. and a second conductive state in which an image signal can be supplied from the unit 30 to the corresponding light emission control signal line 5 via one or more separate drive signal lines 3 .
- the normal drive signal line 3 for supplying image signals to the light emission control signal line 5 is disconnected, the normal drive signal line 3 is switched off by the switching unit 7 arranged in the image display unit 20.
- An image signal can be supplied to the light emission control signal line 5 via another drive signal line 3 .
- a problem of darkening (dark line) or a problem of high brightness (bright line) due to no image signal being supplied is less likely to occur. Therefore, for example, in the display device 100, degradation in image quality due to disconnection of the drive signal line 3 outside the image display section 20 can be reduced.
- the plurality of switching setting units 9 may be changed to a plurality of switching setting units 9A.
- each of the plurality of switching setting sections 9A outputs either the first signal or the second signal to one switching section 7 connected to the switching setting section 9A among the plurality of switching sections 7, for example. signal can be selectively applied.
- each of the plurality of switching setting units 9A switches between the plurality of switching units 7 in response to a signal (also referred to as a designated signal) corresponding to the switching setting unit 9A from the designated signal line group 90, for example.
- the second signal can be given to one of the switching units 7 connected to the switching setting unit 9A.
- the plurality of switching setting units 9A includes, for example, n switching setting units 9A. More specifically, the plurality of n switching setting units 9A includes, for example, a first switching setting unit 9A1, a second switching setting unit 9A2, a third switching setting unit 9A3, . including.
- the first switching section 71 is connected to the first switching setting section 9A1.
- the second switching section 72 is connected to the second switching setting section 9A2.
- the third switching section 73 is connected to the third switching setting section 9A3.
- the n-th switch setting unit 9An is connected to the n-th switch unit 7n.
- the display device 100 has, for example, a designated signal line group 90 including a plurality of signal lines (also referred to as designated signal lines) L1.
- the designated signal line group 90 is connected to the driving section 30, for example.
- the driving unit 30 can supply a designated signal to the designated signal line group 90, for example.
- signals respectively corresponding to the plurality of switching setting units 9A are adopted as the plurality of designation signals.
- signals corresponding to unique identification information given to each of the plurality of switching setting units 9A are applied.
- FIG. 11 is a circuit diagram showing an example of the switching section 7 and switching setting section 9A according to the second embodiment.
- FIG. 11 shows a first switching section 71 that is the first switching section 7, a first switching setting section 9A1 that is the first switching setting section 9A, and a second switching section 72 that is the second switching section 7. and a second switching setting section 9A2, which is the second switching setting section 9A.
- each of the plurality of switching setting units 9A has, for example, a NOR gate 9NO and a signal output unit 9U.
- an address also referred to as a unique address
- the unique address can be assigned to the switching setting section 9A corresponding to each of the predetermined number of two or more pixel section columns C1.
- a unique address is assigned to each of the switch setting units 9A whose number is obtained by subtracting 1 from 2 to the power of y (y is a natural number of 2 or more).
- a unique address represented by 8 bits is assigned to the first switching setting section 9A1.
- a unique address of 00000010 is assigned to the second switching setting section 9A2.
- a unique address of 00000011 is assigned to the third switching setting section 9A3.
- the unique address 11111111 is assigned to the 255th switching setting unit 9A255.
- the designated signal line group 90 includes, for example, y designated signal lines L1.
- the designated signal line group 90 transmits, for example, an L signal or an H signal through each of the y designated signal lines L1, so that a signal (designated signal) can be transmitted.
- the designated signal line group 90 can transmit 2 ⁇ y signals.
- the signals as the yth power of 2 correspond to (2y ⁇ 1) unique addresses respectively corresponding to the (2y ⁇ 1) switching setting units 9A corresponding to the number obtained by subtracting 1 from the yth power of 2, for example.
- the 0 and 1 of each digit in the (2y ⁇ 1) unique addresses can be represented, for example, by L and H signals transmitted by y designated signal lines L1, respectively.
- the designated signal line group 90 includes eight designated signal lines L1.
- the eight designated signal lines L1 are a first designated signal line L10, a second designated signal line L11, a third designated signal line L12, a fourth designated signal line L13, a fifth designated signal line L14, and a sixth designated signal line L15. , a seventh designated signal line L16 and an eighth designated signal line L17.
- the designated signal line group 90 transmits the L signal or the H signal through each of the eight designated signal lines L1, thereby transmitting the designated signals respectively corresponding to the unique addresses represented by 8 bits. can be transmitted.
- the designated signal line group 90 can transmit 255 signals, which is 2 to the eighth power.
- the 256 kinds of signals are 255 designation signals corresponding to 255 unique addresses respectively corresponding to the 255 switching setting sections 9A, and 1 signal corresponding to none of the 255 switching setting sections 9A. and non-designated signals. 0 and 1 of each digit in the 255 unique addresses represented by 8 bits are transmitted by each of the eight designated signal lines L1 from the first designated signal line L10 to the eighth designated signal line L17, for example. signal and H signal.
- the first digit 0 of the unique address is represented by the L signal transmitted through the first designated signal line L10
- the first digit 1 of the unique address is represented by the first designated signal line L10.
- the second digit 0 of the unique address is represented by the L signal transmitted through the second designated signal line L11
- the second digit 1 of the unique address is represented by the H signal transmitted through the second designated signal line L11.
- the third digit 0 of the unique address is represented by the L signal transmitted through the third designated signal line L12
- the third digit 1 of the unique address is represented by the H signal transmitted through the third designated signal line L12.
- the fourth digit 0 of the unique address is represented by the L signal transmitted through the fourth designated signal line L13
- the fourth digit 1 of the unique address is represented by the H signal transmitted through the fourth designated signal line L13
- the fifth digit 0 of the unique address is represented by the L signal transmitted through the fifth designated signal line L14
- the fifth digit 1 of the unique address is represented by the H signal transmitted through the fifth designated signal line L14
- the sixth digit 0 of the unique address is represented by the L signal transmitted through the sixth designated signal line L15
- the sixth digit 1 of the unique address is represented by the H signal transmitted through the sixth designated signal line L15.
- the seventh digit 0 of the unique address is represented by the L signal transmitted through the seventh designated signal line L16
- the seventh digit 1 of the unique address is represented by the H signal transmitted through the seventh designated signal line L16.
- the eighth digit 0 of the unique address is represented by the L signal transmitted through the eighth designated signal line L17
- the eighth digit 1 of the unique address is represented by the H signal transmitted through the eighth designated signal line L17.
- wiring branched from y designated signal lines L1 included in the designated signal line group 90 is connected to the input portion of the NOR gate 9NO. ing.
- the input side of the NOR gate 9NO is connected to wiring branched from the eight designated signal lines L1 included in the designated signal line group 90. .
- each of the (2y ⁇ 1) switching setting units 9A for example, one of the unique addresses represented by y bits given to the switching setting unit 9A
- a NOT circuit is arranged in a portion where the designated signal lines L1 corresponding to all the digits are electrically connected. For this reason, for example, in the switching setting section 9A, when a designation signal corresponding to a unique address represented by y bits assigned to the switching setting section 9A is input from the designation signal line group 90, y designation signals are generated. All the signals input from the line L1 to the NOR gate 9NO become L signals by the NOT circuit located on the input side of the NOR gate 9NO.
- the NOR gate 9NO outputs an H signal
- the signal output section 9U outputs an H signal to the signal input section 7I of the switching section 7.
- FIG. 1 For example, in the switching setting section 9A, when a designated signal or non-designated signal not corresponding to the unique address given to the switching setting section 9A is input from the designated signal line group 90, y All the signals input from the designated signal line L1 to the NOR gate 9NO do not become L signals by the NOT circuit located on the input side of the NOR gate 9NO. At this time, the NOR gate 9NO outputs an L signal, and the signal output section 9U outputs an L signal to the signal input section 7I of the switching section 7.
- the input side of the NOR gate 9NO of each of the 255 switch setting units 9A is connected to all of the 8-bit unique addresses assigned to the switch setting units 9A.
- a NOT circuit is arranged in a portion to which the designated signal line L1 corresponding to each digit is electrically connected. For this reason, for example, in the switching setting section 9A, when a designation signal corresponding to the unique address represented by 8 bits assigned to the switching setting section 9A is input from the designation signal line group 90, eight designation signals are generated.
- Signals input to the NOR gate 9NO from the first to eighth designated signal lines L10 to L17, which is the line L1 are all L signals by the NOT circuits located on the input side of the NOR gate 9NO.
- this NOR gate 9NO outputs an H signal.
- the signal output section 9U outputs an H signal to the signal input section 7I of the switching section 7.
- FIG. 1 For example, in the switching setting section 9A, when a designated signal or a non-designated signal that does not correspond to the unique address assigned to the switching setting section 9A is input from the designated signal line group 90, eight The signals input to the NOR gate 9NO from the first to eighth designated signal lines L10 to L17, which is the designated signal line L1, are not all L signals due to the NOT circuit located on the input side of the NOR gate 9NO. At this time, this NOR gate 9NO outputs an L signal. As a result, the signal output section 9U outputs an L signal to the signal input section 7I of the switching section 7.
- FIG. 12 is a diagram showing a truth table representing the relationship between patterns of signals input from the designated signal line group 90 to the 255 switching setting units 9A and signals output from the switching setting units 9A.
- the L signal is indicated by L and the H signal is indicated by H.
- the L signal is indicated by L
- the H signal is indicated by H.
- a first switch setting section 9A1, a second switch setting section 9A2, a third switch setting section 9A3, . , 127th switching setting section 9A127, ..., 255th switching setting section 9A255 each output an H signal.
- all of the first switching setting section 9A1 to the 255th switching setting section 9A255 are L signals.
- the first switching setting section 9A1 outputs an H signal.
- the second switch setting unit 9A2 outputs an H signal. Output.
- the third switching setting unit 9A3 outputs H signals.
- the 127th switch setting unit 9A127 outputs an H signal.
- the 255th switching setting unit 9A255 outputs an H signal.
- each of the 255 switching setting units 9A selects one of the switching units 7 in response to the designation signal corresponding to the switching setting unit 9A from the multiple designation signal lines L1.
- An H signal as a second signal can be applied to one switching section 7 connected to the switching setting section 9A.
- the switching section 7 to which the L signal as the first signal is input from the switching setting section 9A is set to the first conduction state.
- the switching section 7 to which the H signal as the second signal is input from the switching setting section 9A is set to the second conduction state. If such a configuration is adopted, for example, it is possible to reduce the image quality due to disconnection of the drive signal line 3 outside the image display section 20 in the display device 100 without performing fine work such as cutting the specific wiring portion 9P. Decrease can be reduced.
- Such a process of setting the switching unit 7 to the second conductive state is performed when, for example, a dark line or a bright line is confirmed during inspection or maintenance before shipment of the display device 100, the driving unit 30 can be realized by storing the information of the unique address corresponding to the pixel section column C1 in which the dark line or the bright line is confirmed in the storage section.
- a non-volatile memory for example, is applied to the storage unit of the driving unit 30 .
- the switching section 7 to which this L signal is input is set to the first conductive state. , indicated by “(first)”.
- the signal SEL_sp ⁇ x> output from the x-th switching setting section 9Ax is an H signal
- the switching section 7 to which this H signal is input is set to the second conductive state. , "(second)”.
- the first switch to which this L signal is input The portion 71 is set to a state (first conduction state) in which the image signal S1 can be supplied from the first drive signal line 31 as the normal drive signal line 3 to the light emission control signal line 5 of the first light emission control signal line group 501 .
- the signal SEL_sp ⁇ 1> output from the first switching setting section 9A1 is an H signal as a second signal
- the first switching section 71 to which this H signal is input is set as a separate drive signal line. is set to a state (second conductive state) in which the image signal S2 can be supplied from the second drive signal line 32 of the first light emission control signal line group 501 to the light emission control signal line 5 of the first light emission control signal line group 501 .
- each of the first embodiment and the second embodiment may be changed to a plurality of switching units 7B to which two or more drive signal lines 3 as one or more separate drive signal lines 3 are respectively connected.
- the one or more separate drive signal lines 3 connected to each of the plurality of switching units 7B include two or more separate drive signal lines 3 among the plurality of drive signal lines 3.
- each of the plurality of switching units 7B, in the second conduction state, from the driving unit 30 via two or more separate drive signal lines 3 different from one normal drive signal line 3, and a plurality of An image signal can be supplied to the light emission control signal line 5 corresponding to the switching section 7B among the light emission control signal lines 5 .
- each of the plurality of switching units 7B, in the second conductive state has an image signal having a voltage between two or more image signals supplied from the driving unit 30 to the two or more separate drive signal lines 3, respectively. may be supplied to the emission control signal line 5 corresponding to the switching section 7 among the plurality of emission control signal lines 5 .
- an image signal having a voltage between two or more image signals for example, an image signal having an average voltage of two or more image signals is adopted.
- two or more separate drive signal lines 3 connected to the switching portion 7B are connected to the switching portion 7B of the plurality of drive signal lines 3.
- a mode in which the drive signal line 3 is positioned next to one normal drive signal line 3 is conceivable.
- two or more separate drive signal lines 3 connected to the switching portion 7B are connected to the switching portion 7B of the plurality of drive signal lines 3.
- a mode in which two drive signal lines 3 are located on both sides of one connected normal drive signal line 3 is conceivable.
- one normal drive signal line 3 and two separate drive signal lines 3 connected to each switching section 7B are one normal drive signal line 3 for one pixel section column C1, Two normal drive signal lines 3 for two pixel section columns C1 located on both sides of one pixel section column C1.
- the case of the second switching unit 72 is illustrated.
- one normal drive signal line 3 connected to the second switching section 72 serves as the second drive signal line 32 as one normal drive signal line 3 for the second pixel section column C12.
- the two separate drive signal lines 3 connected to the second switching section 72 are applied to the first pixel section column C11 and the third pixel section column C13 located on both sides of the second pixel section column C12.
- a first drive signal line 31 and a third drive signal line 33 are formed as the two normal drive signal lines 3 . If such a configuration is adopted, for example, a plurality of pixel units 2 that normally emit light in response to image signals supplied from the drive unit 30 via the normal drive signal line 3 are connected to the normal drive signal line 3 . is disconnected, it is possible to emit light with a luminance between the luminances of the pixel portions 2 on both sides. As the luminance between the luminances of the pixel units 2 on both sides, for example, the average of the luminances of the pixel units 2 on both sides can be used. As a result, the plurality of pixel portions 2 become inconspicuous.
- FIG. 13 is a circuit diagram showing an example of the switching section 7B in the display device 100 according to the third embodiment.
- the switching section 7B is based on the switching section 7 according to the first embodiment and the second embodiment, and further includes a fourth gate portion 7G4, a first resistance portion 7R1, and a second resistance portion 7R2.
- the x-th x-th switching portion 7Bx is based on the x-th switching portion 7x according to the first embodiment and the second embodiment, for example, and includes the fourth gate portion 7G4 and the first resistance portion 7R1. and a second resistance portion 7R2.
- the fourth gate portion 7G4 is, for example, on the wiring connecting the (x ⁇ 1)th drive signal line 3(x ⁇ 1), which is the x ⁇ 1th drive signal line 3, and the xth selector section 8x. are placed.
- the (x ⁇ 1)th drive signal line 3(x ⁇ 1) as one separate drive signal line 3 is connected to the xth switching section 7Bx via the connection wiring W3.
- the fourth gate portion 7G4, for example, responds to the input of one or more specific signals to control light emission in the (x ⁇ 1)th drive signal line 3(x ⁇ 1) to the xth light emission control signal line group 50x. It can be set to a conducting state in which an image signal based on the image signal S(x ⁇ 1) can be supplied to the signal line 5 .
- a transfer gate element for example, is applied to the fourth gate portion 7G4.
- the fifth electrode on the input side of the fourth gate portion 7G4 is connected to the (x ⁇ 1)th drive signal line 3(x ⁇ 1)
- the fifth electrode on the output side of the fourth gate portion 7G4 is connected to the (x ⁇ 1)th drive signal line 3(x ⁇ 1).
- Six electrodes are connected to the light emission control signal line 5 via the x-th selector section 8x.
- the A state in which current can flow between the 5th electrode and the 6th electrode is established.
- the image signal S(x- 1) can be supplied.
- the gate electrode of the N-channel transistor of the fourth gate portion 7G4 is connected to the signal input portion 7I
- the gate electrode of the P-channel transistor of the fourth gate portion 7G4 is connected to the output side of the third gate portion 7G3.
- the signal input to the signal input section 7I is, for example, the gate electrode of the P-channel transistor of the first gate portion 7G1, the gate electrode of the N-channel transistor of the second gate portion 7G2, and the third gate portion. It is applied to the input side portion of 7G3 and the gate electrode of the N-channel transistor of the fourth gate portion 7G4.
- the first resistor portion 7R1 is located on, for example, a wire connecting a wire connecting the first gate portion 7G1 and the x-th selector section 8x and a fourth electrode on the output side of the second gate portion 7G2.
- the first resistance portion 7R1 has, for example, a first electrical resistance Rb1.
- the first electric resistance Rb1 is, for example, the electric resistance Ra(x+1 ) is set to a value much greater than
- the first electrical resistor Rb1 attenuates the voltage of the image signal S(x+1) input from the (x+1)th drive signal line 3(x+1) through the second gate portion 7G2, for example, to reduce the voltage of the first gate portion 7G1. and the x-th selector unit 8x.
- the second resistor portion 7R2 is located on, for example, a wire connecting a wire connecting the first gate portion 7G1 and the x-th selector section 8x and a sixth electrode on the output side of the fourth gate portion 7G4. there is
- the second resistance portion 7R2 has, for example, a second electrical resistance Rb2.
- the second electric resistance Rb2 is, for example, an electric current in the (x ⁇ 1) drive signal line 3(x ⁇ 1) as the separate drive signal line 3 connected to the fifth electrode on the input side of the fourth gate portion 7G4. It is set to a value much larger than the resistance Ra(x-1).
- the second electric resistance Rb2 attenuates the voltage of the image signal S(x-1) input from the (x-1) drive signal line 3(x-1) through the fourth gate portion 7G4, for example. , to the wiring connecting the first gate portion 7G1 and the x-th selector portion 8x.
- an L signal is input to the signal input section 7I.
- an L signal is input to the gate electrode of the P-channel transistor and an H signal is input to the gate electrode of the N-channel transistor.
- the first gate portion 7G1 enters a state (conducting state) in which current can flow between the first electrode and the second electrode.
- an H signal is input to the gate electrode of the P-channel transistor, and an L signal is input to the gate electrode of the N-channel transistor.
- the second gate portion 7G2 is in a state in which no current flows between the third electrode and the fourth electrode (non-conducting state), and the fourth gate portion 7G4 is in a state between the fifth electrode and the sixth electrode.
- a state occurs in which no current flows between
- the x-th switching unit 7Bx is in a state in which the image signal Sx can be supplied to the light emission control signal lines 5 in the x-th light emission control signal line group 50x from the x-th drive signal line 3x via the first gate portion 7G1. (first conductive state).
- an H signal is input to the signal input section 7I, for example.
- the H signal is input to the gate electrode of the P-channel transistor
- the L signal is input to the gate electrode of the N-channel transistor.
- the first gate portion 7G1 enters a state (non-conducting state) in which no current flows between the first electrode and the second electrode.
- an L signal is input to the gate electrode of the P-channel transistor
- an H signal is input to the gate electrode of the N-channel transistor.
- the second gate portion 7G2 enters a state (conducting state) in which a current can flow between the third electrode and the fourth electrode, and the fourth gate portion 7G4 becomes a state between the fifth electrode and the sixth electrode. A state in which current can flow between them (conducting state) is established.
- the x-th switching unit 7Bx switches between the image signal S(x+1) input from the (x+1)th drive signal line 3(x+1) through the second gate portion 7G2 and the (x ⁇ 1)th drive signal line 3(x+1).
- An image signal having a voltage between the image signal S(x-1) input from the signal line 3(x-1) through the fourth gate portion 7G4 and the image signal of the x-th emission control signal line group 50x controls light emission. It is set to a state (second conductive state) in which it can be supplied to the signal line 5 .
- a state second conductive state
- the emission control signal lines 5 in the x-th emission control signal line group 50x to the emission control signal lines 5 in the x-th emission control signal line group 50x.
- the average of the image signal S(x+1) and the image signal S(x ⁇ 1) can be supplied to the emission control signal lines 5 in the x-th emission control signal line group 50x.
- the first sub-pixel portion 2r, the second sub-pixel portion 2g and the third sub-pixel portion 2b emit light.
- a time constant associated with the capacitive element of the control unit may increase. Therefore, for example, the configuration of the switching unit 7B in the example of FIG. 13 is likely to be adopted when the time interval (also referred to as frame rate) at which images are switched on the display device 100 is large.
- the signal line 3 may be a drive signal line 3 that is not positioned next to one normal drive signal line 3 connected to the switching section 7 among the plurality of drive signal lines 3 .
- one normal drive signal line 3 and one separate drive signal line 3 connected to one switching section 7 are two lines for two pixel section columns C1 that are not adjacent to each other. This is the normal drive signal line 3 .
- FIG. 14 is a block diagram schematically showing a first example of the configuration of the display device 100 according to the fourth embodiment.
- the configuration of the display device 100 shown in FIG. 14 is based on, for example, the configuration of the display device 100 according to the first embodiment shown in FIG. It has a form in which one separate drive signal line 3 is changed to a drive signal line 3 that is not positioned next to one normal drive signal line 3 connected to the switching section 7 .
- FIG. 15 is a block diagram schematically showing a second example of the configuration of the display device 100 according to the fourth embodiment.
- the configuration of the display device 100 shown in FIG. 15 is based on, for example, the configuration of the display device 100 according to the second embodiment shown in FIG. It has a form in which one separate drive signal line 3 is changed to a drive signal line 3 that is not positioned next to one normal drive signal line 3 connected to the switching section 7 .
- two or more separate drive signal lines 3 connected to the switching portion 7B are connected to the switching portion of the plurality of drive signal lines 3. It may be a drive signal line 3 that is not positioned next to one normal drive signal line 3 connected to the portion 7B. Even if such a configuration is adopted, for example, if the normal drive signal line 3 for supplying image signals to the light emission control signal line 5 and the drive signal line 3 adjacent to the normal drive signal line 3 are disconnected, Even if there is, the image signal can be supplied to the light emission control signal line 5 via the other two or more drive signal lines 3 by the switching section 7B arranged in the image display section 20 .
- a problem of darkening (dark line) or a problem of high brightness (bright line) due to no image signal being supplied is less likely to occur. Therefore, for example, in the display device 100, even if a situation occurs in which the adjacent drive signal lines 3 are likely to be disconnected, deterioration in image quality due to disconnection of the drive signal lines 3 outside the image display section 20 can be reduced.
- the signal line 3 has one drive signal line (redundant drive signal line) as one separate drive signal line preliminarily arranged to which an image signal can be supplied from the drive unit 30. line) may be changed to 3B. If such a configuration is adopted, for example, when the normal drive signal line 3 that supplies the image signal to the light emission control signal line 5 is broken, the switching unit 7 arranged in the image display unit 20 outputs another drive signal. An image signal can be supplied to the light emission control signal line 5 via the redundant drive signal line 3B, which is a line.
- the display device 100 it is possible to substantially prevent deterioration in image quality due to disconnection of the drive signal line 3 outside the image display section 20 . Therefore, for example, deterioration in image quality due to disconnection of the drive signal line 3 outside the image display section 20 in the display device 100 can be reduced.
- FIG. 16 is a block diagram schematically showing a first example of the configuration of the display device 100 according to the fifth embodiment.
- the configuration of the display device 100 shown in FIG. 16 is based on, for example, the configuration of the display device 100 according to the first embodiment shown in FIG. It has a configuration in which a redundant drive signal line 3B is connected instead of the drive signal line 3 is connected.
- FIG. 18 is a circuit diagram showing a first example of the switching section 7 and switching setting section 9 according to the fifth embodiment.
- the switching unit 7 and the switching setting unit 9 shown in FIG. 18 are based on, for example, the switching unit 7 and the switching setting unit 9 according to the first embodiment shown in FIG. , the redundant drive signal line 3B is connected instead of the (x+1)th drive signal line 3(x+1).
- the redundant drive signal line 3B as the separate drive signal line is switched to the emission control signal line 5 in the x-th emission control signal line group 50x.
- the image signal S_sp supplied from the drive unit 30 to the light emission control signal line 5 through the redundant drive signal line 3B is transmitted through the x-th drive signal line 3x, which is the original normal drive signal line 3, for light emission control. It is sufficient that it corresponds to the image signal Sx to be supplied to the signal line 5 .
- image signals that should be supplied to the plurality of pixel units 2 via the broken normal drive signal line 3 can be supplied to the plurality of pixel units 2 via the redundant drive signal line 3B.
- the redundant drive signal line 3B As a result, for example, even when an image to be displayed on the display device 100 is relatively low-definition, defects in light emission due to disconnection of the normal drive signal line 3 are less likely to be visually recognized.
- FIG. 19 is a block diagram schematically showing a second example of the configuration of the display device 100 according to the fifth embodiment.
- the configuration of the display device 100 shown in FIG. 19 is based on, for example, the configuration of the display device 100 according to the second embodiment shown in FIG. It has a configuration in which a redundant drive signal line 3B is connected instead of the drive signal line 3 is connected.
- FIG. 20 is a circuit diagram showing a second example of the switching section 7 and switching setting section 9 according to the fifth embodiment.
- the switching unit 7 and the switching setting unit 9 shown in FIG. 20 are based on, for example, the switching unit 7 and the switching setting unit 9 according to the second embodiment shown in FIG. , the second drive signal line 32 is connected to the redundant drive signal line 3B.
- the redundant drive signal line 3B as the separate drive signal line is switched to the emission control signal line 5 in the first emission control signal line group 501.
- the image signal S_sp supplied from the drive unit 30 to the light emission control signal line 5 through the redundant drive signal line 3B is transmitted through the first drive signal line 31, which is the original normal drive signal line 3, for light emission control. It is sufficient that it corresponds to the image signal S1 to be supplied to the signal line 5.
- image signals that should be supplied to the plurality of pixel units 2 via the broken normal drive signal line 3 can be supplied to the plurality of pixel units 2 via the redundant drive signal line 3B.
- the redundant drive signal line 3B As a result, for example, even when an image to be displayed on the display device 100 is relatively low-definition, defects in light emission due to disconnection of the normal drive signal line 3 are less likely to be visually recognized.
- two or more drive signal lines 3 among the plurality of drive signal lines 3 are positioned one by one. It has a plurality of redundant drive signal lines 3B.
- the drive section 30 can supply an image signal to each of the plurality of redundant drive signal lines 3B, for example.
- Each of the redundant drive signal lines 3B includes, for example, a first redundant wiring portion 3Bb, a second redundant wiring portion 3Bc, and a third redundant wiring portion 3Ba.
- the first redundant wiring portion 3Bb is a portion (back surface wiring portion) located on the second surface 10b.
- the second redundant wiring portion 3Bc is a portion (side wiring portion) located on the side surface 10c.
- the third redundant wiring portion 3Ba is a portion (front wiring portion) located on the first surface 10a.
- the first redundant wiring portion 3Bb is connected to the driving section 30, for example.
- each redundant drive signal line 3B for example, a first redundant wiring portion 3Bb, a second redundant wiring portion 3Bc, and a third redundant wiring portion 3Ba are connected in series in this order. More specifically, for example, the first redundant wiring portion 3Bb is connected to a conductive third connection portion arranged along the side surface 10c on the second surface 10b.
- the second redundant wiring portion 3Bc is connected to the third connecting portion, and is also connected to the fourth conductive connecting portion arranged along the side surface 10c on the first surface 10a.
- the third redundant wiring portion 3Ba is connected to the fourth connecting portion.
- a first redundant wiring portion 3Bb, a third connecting portion, a second redundant wiring portion 3Bc, a fourth connecting portion, and a third redundant wiring portion 3Ba are connected. , are connected in this order.
- a conductor pad is applied to each of the third connection portion and the fourth connection portion, for example, similarly to the first connection portion and the second connection portion described above.
- the second redundant wiring portion 3Bc is applied to the side surface 10c in a desired pattern, and the conductive paste is dried and baked by heating, and cured by heating. It can be formed by treatment, curing by irradiation with light such as ultraviolet rays, or curing by heating and irradiation of light.
- the second redundant wiring portion 3Bc may be formed, for example, by a thin film forming method such as plating, vapor deposition, or CVD.
- the conductive paste can be easily applied to the groove, which is the desired area on the side surface 10c.
- the second redundant wiring portion 3Bc of the redundant drive signal line 3B may be wider and/or thicker than either the first redundant wiring portion 3Bb or the third redundant wiring portion 3Ba. Since the second redundant wiring portion 3Bc is formed by applying and baking a conductive paste, the resistance of the second redundant wiring portion 3Bc is determined by the first redundant wiring portion 3Bb and the third redundant wiring which can be formed by a thin film forming method. Compared with each resistance of the portion 3Ba, it tends to be larger if the thickness is the same. Therefore, the increase in resistance of the second redundant wiring portion 3Bc is suppressed, and it becomes easy to match the resistances of the first redundant wiring portion 3Bb and the third redundant wiring portion 3Ba.
- connection resistance contact resistance
- the second redundant wiring portion 3Bc may be wider than both the first redundant wiring portion 3Bb and the third redundant wiring portion 3Ba.
- the width of the second redundant wiring portion 3Bc may be more than 1 to about 5 times or less than the width of each of the first redundant wiring portion 3Bb and the third redundant wiring portion 3Ba, but is not limited to this range.
- the thickness of the second redundant wiring portion 3Bc may be equal to or greater than the thickness of each of the first redundant wiring portion 3Bb and the third redundant wiring portion 3Ba.
- the thickness of the second redundant wiring portion 3Bc is equal to that of the first redundant wiring portion. It may be thicker than each thickness of 3Bb and the third redundant wiring portion 3Ba. The thickness of the second redundant wiring portion 3Bc may be more than 1 to about 10 times or less than the thickness of each of the first redundant wiring portion 3Bb and the third redundant wiring portion 3Ba, but the thickness is not limited to this range.
- the second redundant wiring portion 3Bc may be wider and thicker than both the first redundant wiring portion 3Bb and the third redundant wiring portion 3Ba. Furthermore, for the same purpose, the second redundant wiring portion 3Bc may be configured to be shorter than either the first redundant wiring portion 3Bb or the third redundant wiring portion 3Ba. In particular, the above configuration is more effective if the second redundant wiring portion 3Bc has the same width and thickness as the first redundant wiring portion 3Bb and the third redundant wiring portion 3Ba.
- the second redundant wiring portion 3Bc may be covered with a protective layer.
- the material of the protective layer may be resin such as acrylic resin or polycarbonate resin, or inorganic compound such as silicon oxide (SiO 2 ) or silicon nitride (Si 3 N 4 ).
- the protective layer may contain black and conductive components such as carbon particles. In this case, the conductivity of the second redundant wiring portion 3Bc is improved, and the narrow frame portion between the end portion of the first surface 10a and the image display section 20 becomes inconspicuous.
- a protective layer covering a certain second redundant wiring portion 3Bc and a protective layer covering a second redundant wiring portion 3Bc adjacent to the certain second redundant wiring portion 3Bc may not be in contact with each other.
- the protective layer has conductivity, it is possible to prevent a certain second redundant wiring portion 3Bc from being short-circuited with the second redundant wiring portion 3Bc adjacent thereto.
- a protective layer covering a certain second redundant wiring portion 3Bc and a protective layer covering a second redundant wiring portion 3Bc adjacent to the certain second redundant wiring portion 3Bc and may be in contact with each other or may be continuous.
- the first redundant wiring portion 3Bb is connected to the drive section 30 located in the central portion of the second surface 10b of the substrate 10, so the length of the first redundant wiring portion 3Bb is the third It may be longer than the length of the redundant wiring portion 3Ba. In that case, if the material of the first redundant wiring portion 3Bb and the material of the third redundant wiring portion 3Ba are the same, the first redundant wiring portion 3Bb has a wider width and/or thickness than the third redundant wiring portion 3Ba. may be thick. With this configuration, the resistance of the redundant drive signal line 3B can be reduced by reducing the resistance of the first redundant wiring portion 3Bb.
- the plurality of redundant drive signal lines 3B may be configured to include redundant drive signal lines 3B having a lower resistance than the drive signal lines 3. For example, when the wiring path from the drive section 30 to the switching section 7 of the redundant drive signal line 3B is longer than that of the drive signal line 3, the wiring of the redundant drive signal line 3B is thicker than that of the drive signal line 3. If the width is increased, the electric resistance of the redundant drive signal line 3B can be reduced. As a result, the voltage of the image signal transmitted from the drive section 30 to the switching section 7 via the redundant drive signal line 3B is less likely to drop.
- the thickness (width) of the drive signal line 3 and the thickness of the redundant drive signal line 3B are the same, the thickness (width) of the redundant drive signal line 3B is more than 1 to 5 times the thickness (width) of the drive signal line 3. Although it may be less than the degree, it is not limited to this range.
- the wiring thickness may be increased in any of the first redundant wiring portion 3Bb, the second redundant wiring portion 3Bc, and the third redundant wiring portion 3Ba of the redundant drive signal line 3B.
- the redundant drive signal line The electrical resistance of 3B may be reduced.
- the plurality of redundant drive signal lines 3B may include redundant drive signal lines 3B having a lower specific resistance (resistivity) than the drive signal lines 3.
- the material of the drive signal line 3 is annealed copper (IACS% is 100.0%) or aluminum (IACS% is 59.5%), and the material of the redundant drive signal line 3B is silver (IACS% is 105.7%).
- the material of the drive signal line 3 may be aluminum, and the material of the redundant drive signal line 3B may be annealed copper.
- the material of the drive signal line 3 may be molybdenum (IACS% is 31.4%), and the material of the redundant drive signal line 3B may be aluminum.
- the display device 100 includes the first first redundant drive signal line 3B1, . . . and the z-th redundant drive signal line 3Bz.
- one drive signal line 3 is connected as the normal drive signal line 3 to each of two or more switching units 7 out of the plurality of switching units 7. It is One redundant drive signal line 3B is branched and connected to each of the two or more switching units 7, respectively.
- the plurality of switching units 7 are connected to each of the two or more drive signal lines 3, for example, one by one for each of the two or more drive signal lines 3, and the plurality of redundant drive signals.
- One redundant drive signal line 3B of the lines 3B branches and includes two or more switching units 7 connected to each other. For this reason, for example, one drive signal line 3 and one redundant drive signal line 3B are connected to each of the switching units 7 .
- one redundant drive signal line 3B is connected to each of two or more switching units 7 out of the plurality of switching units 7 .
- the third redundant wiring portion 3Ba of one redundant drive signal line 3B has two or more portions (also referred to as branch portions) connected to two or more switching units 7, respectively. ) B1.
- each of the plurality of drive signal lines 3 extends from the second surface 10b side to the first surface 10a side via the first side surface 10c1.
- each of the plurality of redundant drive signal lines 3B may be positioned so as to extend from the second surface 10b side to the first surface 10a side via the first side surface 10c1.
- one redundant drive signal line 3B is positioned next to the two or more drive signal lines 3 on the first side surface 10c1.
- the two or more drive signal lines 3 and the two or more drive signal lines 3 are arranged on the first side surface 10c1.
- a group of signal lines (also referred to as a signal line group) is formed in which one redundant drive signal line 3B arranged in advance with respect to the signal lines 3 is arranged side by side. Then, for example, when the first side surface 10c1 is viewed in plan, the plurality of signal line groups are positioned in areas separated from each other. In other words, for example, when the first side surface 10c1 is viewed in plan, the signal line groups are positioned so as not to overlap each other.
- the length of the wiring path for transmitting the image signal from the driving section 30 to the pixel section 2 via the driving signal line 3 and the length of the wiring path from the driving section 30 via the redundant driving signal line 3B to the pixel section 2 This can reduce the difference in the length of the route of the wiring that transmits the image signal.
- the image signal is not transmitted from the driving section 30 to the pixel section 2.
- voltage is difficult to drop.
- deterioration in image quality due to disconnection of the drive signal line 3 outside the image display section 20 in the display device 100 can be reduced.
- one redundant drive signal line 3B is provided on the first side surface 10c1. A similar effect can be achieved even if it is located between
- a predetermined number v (v is a natural number of 2 or more) of the drive signal lines 3 is applied.
- v for example, the number obtained by subtracting 1 from 2 to the power of y (y is a natural number of 2 or more) is applied.
- one drive signal line is provided for each of the (2y ⁇ 1) switching units 7. 3 are connected as normal drive signal lines.
- One redundant drive signal line 3B among the plurality of redundant drive signal lines 3B is branched to each of the (2y ⁇ 1) switching units 7. are connected to each other.
- the plurality of switching units 7 switch the (2y ⁇ 1) drive signal lines 3 respectively.
- one redundant drive signal line 3B out of a plurality of redundant drive signal lines 3B is branched and connected to (2y ⁇ 1) switching units 7, respectively.
- one drive signal line 3 is connected to each of 255 switching units 7 out of the plurality of switching units 7 as a normal driving signal line. It is One redundant driving signal line 3B out of a plurality of redundant driving signal lines 3B is branched and connected to each of the 255 switching sections 7, respectively.
- the plurality of switching units 7 are connected to each of the 255 drive signal lines 3, one for each of the 255 drive signal lines 3, and the plurality of redundant drive signal lines 3B.
- One redundant drive signal line 3B among them is branched and includes 255 switching units 7 connected to each other.
- one redundant drive signal line 3B is provided for every two or more drive signal lines 3, which are mutually different numbers among the plurality of drive signal lines 3. may be placed.
- each of the redundant drive signal lines 3B extends from the second surface 10b through the first side surface 10c1 to the first surface 10a. It may be positioned so as to reach the side of the first side surface 10c1, and may be positioned separately from the plurality of drive signal lines 3 without being positioned between the plurality of drive signal lines 3 on the first side surface 10c1.
- the first side surface 10c1 when the first side surface 10c1 is viewed through the plane, the first side surface 10c1 has an area where the plurality of drive signal lines 3 are arranged and an area where the plurality of redundant drive signal lines 3B are arranged. and may be separated. This facilitates the arrangement of the plurality of drive signal lines 3, for example, the plurality of drive signal lines 3 can be arranged at a predetermined pitch on the second surface 10b side and the first side surface 10c1 of the substrate 10. .
- FIG. 21 is a block diagram schematically showing a first example of the configuration of the display device 100 according to the sixth embodiment.
- the configuration of the display device 100 shown in FIG. 21 is based on, for example, the first example of the configuration of the display device 100 according to the fifth embodiment shown in FIG.
- the plurality of redundant drive signal lines 3B have a modified configuration such that they are not positioned between the plurality of drive signal lines 3 but are positioned separately from the plurality of drive signal lines 3.
- FIG. 22 is a block diagram schematically showing a second example of the configuration of the display device 100 according to the sixth embodiment.
- the configuration of the display device 100 shown in FIG. 22 is based on, for example, the second example of the configuration of the display device 100 according to the fifth embodiment shown in FIG.
- the plurality of redundant drive signal lines 3B have a modified configuration such that they are not positioned between the plurality of drive signal lines 3 but are positioned separately from the plurality of drive signal lines 3.
- each of the plurality of drive signal lines 3 extends from the second surface 10b side to the first surface 10a side via the first side surface 10c1.
- One or more redundant drive signal lines 3B out of the plurality of redundant drive signal lines 3B are arranged to extend from the second surface 10b side to the side surface 10c different from the first side surface 10c1 out of the plurality of side surfaces 10c. It may be located so as to reach the first surface 10a side through.
- At least one or more redundant drive signal lines 3B among the plurality of redundant drive signal lines 3B pass through the side surface 10c different from the first side surface 10c1 on which the plurality of drive signal lines 3 are arranged. , may be located so as to extend from the second surface 10b side to the first surface 10a side through the side surface 10c.
- all the redundant drive signal lines 3B among the plurality of redundant drive signal lines 3B pass through the side surface 10c different from the first side surface 10c1 on which the plurality of drive signal lines 3 are arranged. It may be located so as to extend from the second surface 10b side to the first surface 10a side through the side surface 10c.
- FIG. 23 is a block diagram schematically showing a first example of the configuration of the display device 100 according to the seventh embodiment.
- the configuration of the display device 100 shown in FIG. 23 is based on, for example, the first example of the configuration of the display device 100 according to the sixth embodiment shown in FIG.
- the paths on which they are arranged are changed from the second surface 10b side to the first surface 10a side via the second side surface 10c2, which is one side surface 10c different from the first side surface 10c1.
- FIG. 24 is a block diagram schematically showing a second example of the configuration of the display device 100 according to the seventh embodiment.
- the configuration of the display device 100 shown in FIG. 24 is based on, for example, the second example of the configuration of the display device 100 according to the sixth embodiment shown in FIG.
- the paths on which they are arranged are changed from the second surface 10b side to the first surface 10a side via the second side surface 10c2, which is one side surface 10c different from the first side surface 10c1.
- one or more redundant drive signal lines 3B among the plurality of redundant drive signal lines 3B are positioned so as to pass over the other side surface 10c different from the first side surface 10c1 and the second side surface 10c2.
- some of the plurality of redundant drive signal lines 3B and some of the redundant drive signal lines 3B may be positioned so as to pass through different side surfaces 10c. .
- one or more redundant drive signal lines 3B among the plurality of redundant drive signal lines 3B are positioned so as to extend from the second surface 10b side to the first surface 10a side via the second side surface 10c2
- One or more other redundant drive signal lines 3B among the redundant drive signal lines 3B may be positioned so as to extend from the second surface 10b side to the first surface 10a side via the fourth side surface 10c4. be done.
- each of the plurality of redundant drive signal lines 3B has two or more lines extending from the drive section 30 to the image display section 20.
- a wiring portion (also referred to as a redundant wiring portion) 3Bp may be provided.
- the redundant drive signal line 3B extends from the third redundant wiring portion 3Ba including the branch portion B1 connected to the switching portion 7 in the image display portion 20 to each of the two or more redundant wiring portions 3Bp. You may have the structure which results in the drive part 30 through.
- the redundant drive signal line 3B normally one redundant wiring portion 3Bp out of two or more redundant wiring portions 3Bp is used to supply the image signal from the driving portion 30 to the switching portion 7.
- the other redundant wiring portion 3Bp among the two or more redundant wiring portions 3Bp is used to transfer the image signal from the driving portion 30 to the switching portion 7.
- the other redundant wiring portion 3Bp can be made available.
- the state in which the image signal can be supplied from the redundant drive signal line 3B to the light emission control signal line 5 can be maintained.
- each of two or more redundant drive signal lines 3B which are a part of the plurality of redundant drive signal lines 3B, has two or more redundant wiring portions 3Bp extending from the drive section 30 to the image display section 20.
- FIG. 25 is a block diagram schematically showing an example of the configuration of the display device 100 according to the eighth embodiment.
- the configuration of the display device 100 shown in FIG. 25 is based on, for example, the first example of the configuration of the display device 100 according to the fifth embodiment shown in FIG.
- Each has a form modified to have two redundant wiring portions 3Bp from the driving portion 30 to the image display portion 20.
- two redundant wiring portions 3Bp in each of the plurality of redundant drive signal lines 3B include a first redundant wiring portion 3Bp1 and a second redundant wiring portion 3Bp2.
- Each of the first redundant wiring portion 3Bp1 and the second redundant wiring portion 3Bp2 includes, for example, a first redundant wiring portion 3Bb on the second surface 10b and a second redundant wiring portion 3Bc on the side surface 10c.
- the second redundant wiring portion 3Bc of the first redundant wiring portion 3Bp1 and the second redundant wiring portion 3Bc of the second redundant wiring portion 3Bp2 are connected to one third redundant wiring portion 3Ba.
- This single third redundant wiring portion 3Ba is connected to the switching portion 7 at the branch portion B1.
- the second redundant wiring portion By using 3Bp2, the state in which the image signal can be supplied from the redundant drive signal line 3B to the light emission control signal line 5 can be maintained. Further, even if the second redundant wiring portion 3Bp2 of the two redundant wiring portions 3Bp in the redundant drive signal line 3B is disconnected due to various factors such as thermal or mechanical distortion, the first redundant wiring portion 3Bp1 , the state in which the image signal can be supplied from the redundant drive signal line 3B to the light emission control signal line 5 can be maintained. As a result, for example, degradation in image quality due to disconnection of the drive signal line 3 outside the image display section 20 can be reduced.
- each of the plurality of drive signal lines 3 has two or more wiring portions 3p from the drive portion 30 to the image display portion 20.
- the driving signal line 3 extends from the third wiring portion 3a connected to the switching portions 7 and 7B in the image display portion 20 to the driving portion 30 via each of two or more wiring portions 3p.
- the driving signal line 3 may have In this case, for example, in each of the plurality of drive signal lines 3, usually one wiring portion 3p out of two or more wiring portions 3p is used to transmit an image signal from the driving portion 30 to the switching portions 7 and 7B.
- one or more drive signal lines 3 among the plurality of drive signal lines 3 may have two or more wiring portions 3p extending from the drive section 30 to the image display section 20 .
- each of two or more drive signal lines 3, which are a part of the plurality of drive signal lines 3, has two or more wiring portions 3p from the drive section 30 to the image display section 20. good too.
- FIG. 26 is a block diagram schematically showing a first example of the configuration of the display device 100 according to the ninth embodiment.
- the configuration of the display device 100 shown in FIG. 26 is based on, for example, an example of the configuration of the display device 100 according to the first embodiment shown in FIG. It has a form modified to have two wiring portions 3p from the driving portion 30 to the image display portion 20.
- FIG. 26 is a block diagram schematically showing a first example of the configuration of the display device 100 according to the ninth embodiment.
- the configuration of the display device 100 shown in FIG. 26 is based on, for example, an example of the configuration of the display device 100 according to the first embodiment shown in FIG. It has a form modified to have two wiring portions 3p from the driving portion 30 to the image display portion 20.
- FIG. 27 is a block diagram schematically showing a second example of the configuration of the display device 100 according to the ninth embodiment.
- the configuration of the display device 100 shown in FIG. 27 is based on, for example, the first example of the configuration of the display device 100 according to the fifth embodiment shown in FIG. , but has a form modified to have two wiring portions 3p from the driving portion 30 to the image display portion 20.
- FIG. 27 is a block diagram schematically showing a second example of the configuration of the display device 100 according to the ninth embodiment.
- the configuration of the display device 100 shown in FIG. 27 is based on, for example, the first example of the configuration of the display device 100 according to the fifth embodiment shown in FIG. , but has a form modified to have two wiring portions 3p from the driving portion 30 to the image display portion 20.
- the two wiring portions 3p include a first wiring portion 3p1 and a second wiring portion 3p2.
- Each of the first wiring portion 3p1 and the second wiring portion 3p2 includes a first wiring portion 3b on the second surface 10b and a second wiring portion 3c on the side surface 10c.
- the second wiring portion 3c of the first wiring portion 3p1 and the second wiring portion 3c of the second wiring portion 3p2 are connected to one third wiring portion 3a. This single third wiring portion 3 a is connected to the switching portion 7 .
- the second wiring portion 3p2 can be used. , the supply of the image signal from the drive signal line 3 to the light emission control signal line 5 can be maintained. Further, even if the second wiring portion 3p2 of the two wiring portions 3p of the drive signal line 3 is disconnected due to various factors such as thermal or mechanical distortion, the first wiring portion 3p1 can be used. The supply of the image signal from the drive signal line 3 to the emission control signal line 5 can be maintained. As a result, for example, degradation in image quality due to disconnection of the drive signal line 3 outside the image display section 20 can be reduced.
- each of the switching units 7 and 7B is a circuit configuration that is selectively set to the first conduction state and the second conduction state
- the above-described specific circuit configuration can be used. It is not limited and may have various circuit configurations.
- switching unit 7 may have a circuit configuration in which N-channel transistors and P-channel transistors are interchanged in each of first gate portion 7G1 and second gate portion 7G2.
- the switching section 7B has a circuit configuration in which N-channel transistors and P-channel transistors are interchanged in each of the first gate portion 7G1, the second gate portion 7G2, and the fourth gate portion 7G4. .
- the first gate portion 7G1 supplies an image signal from the normal drive signal line 3 to the emission control signal line 5 of the emission control signal line group 50 in response to the input of one or more specific signals.
- Various circuits or elements other than the transfer gate element may be applied as long as they are set to a conductive state in which the .
- the second gate portion 7G2 can be supplied with an image signal from the separate drive signal line 3 to the emission control signal line 5 of the emission control signal line group 50 in response to the input of one or more specific signals.
- Various circuits or elements other than the transfer gate element may be applied as long as they are set in a conductive state such that
- an H signal may be applied to the first signal and an L signal may be applied to the second signal, depending on the circuit configuration of each of the switching units 7 and 7B.
- the switching units 7 and 7B are set to the first conduction state by, for example, application of the H signal as the first signal from the switching setting units 9 and 9A, and the second conduction state from the switching setting units 9 and 9A.
- a second conductive state can be set by applying an L signal as a signal.
- the circuit configuration of each of the switching setting units 9 and 9A is a circuit configuration that can selectively apply either the first signal or the second signal to the switching unit 7. If so, it is not limited to the specific circuit configuration described above, and may have various circuit configurations.
- the switching setting section 9A has a circuit configuration using one or more other logic gates instead of the NOR gate, and according to the application of a designation signal corresponding to the switching setting section 9A such as a unique address, , the second signal is given to the switching units 7 and 7B.
- a designation signal corresponding to the switching setting section 9A such as a unique address
- the second signal is given to the switching units 7 and 7B.
- an H signal may be applied to the first signal and an L signal may be applied to the second signal, depending on the circuit configuration of each of the switching setting units 9 and 9A.
- the switching units 7 and 7B are set to the first conduction state by, for example, application of the H signal as the first signal from the switching setting units 9 and 9A, and the second conduction state from the switching setting units 9 and 9A.
- a second conductive state can be set by applying an L signal as a signal.
- the space between the end of the first surface 10a and the image display unit 20 is as narrow as possible so that various wirings and various circuits can be arranged.
- a portion may be present.
- part or all of the scanning signal line driving section 2v may be arranged in the narrow frame portion
- part of the image signal line driving section 2h may be arranged in the narrow frame portion.
- the drive unit 30 may be arranged in the narrow frame portion.
- the plurality of drive signal lines 3 and the plurality of redundant drive signal lines 3B may be positioned from the narrow frame portion to the image display section 20 .
- the width of the narrow frame portion may be about 5 ⁇ m to 100 ⁇ m or about 10 ⁇ m to 50 ⁇ m, but is not limited to these ranges. Further, for example, the image display section 20 , the drive section 30 and the plurality of drive signal lines 3 may be arranged with respect to various members other than the substrate 10 .
- the switching section 7 or the switching section 7B may be arranged for each of a plurality of some drive signal lines 3 among all the drive signal lines 3 in the display device 100 .
- the switching section 7 or the switching section 7B may be connected to each of a plurality of some drive signal lines 3 among all the drive signal lines 3 in the display device 100 .
- the switching setting unit 9 is connected to some of the switching units 7 of the plurality of switching units 7, and the other switching units of the plurality of switching units 7 are connected.
- a switching setting unit 9A may be connected to 7 .
- the switching setting unit 9 is connected to some switching units 7B of the plurality of switching units 7B, and the switching setting unit 9 is connected to the other switching units 7B of the plurality of switching units 7B. 9A may be connected.
- each of the plurality of pixel units 2 has two or more sub-pixel units among the first sub-pixel unit 2r, the second sub-pixel unit 2g, and the third sub-pixel unit 2b.
- the first color of light emitted by the first sub-pixel portion 2r may be other than red, for example.
- the second color of light emitted by the second sub-pixel portion 2g may be, for example, other than green.
- the third color of light emitted by the third sub-pixel portion 2b may be other than blue, for example.
- Each of the plurality of pixel units 2 may have, for example, the same configuration as one sub-pixel unit that emits light of one color.
- each pixel section 2 may have a light emitting element that emits light of one color, or may have a plurality of light emitting elements that emit light of two or more different colors.
- the selector section 8 is unnecessary.
- the light emission control signal line 5 may be directly connected to the switching section 7 .
- each of the first surface 10a and the second surface 10b of the substrate 10 may be a surface different from a rectangular surface having four sides.
- Each of the first surface 10a and the second surface 10b may be, for example, a polygonal surface such as a pentagonal surface or a hexagonal surface.
- the display device 100 may be used as an independent display device without being applied to the tiling display 900.
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Abstract
Description
図1は、各実施形態に係るタイリングディスプレイ900の一例を模式的に示す正面図である。タイリングディスプレイ900は、例えば、タイル状に並べられた複数の表示装置100を有する。図1の例では、タイリングディスプレイ900は、XZ平面に沿ってマトリックス状に並べられた複数の表示装置100を有する。複数の表示装置100のそれぞれは、例えば、平板状の表示パネルである。
図2は、各実施形態に係る表示装置100の一例を模式的に示す側面図である。図3は、各実施形態に係る表示装置100の一例を模式的に示す裏面図である。図2および図3で示されるように、表示装置100は、例えば、基板10と、画像表示部20と、駆動部30と、複数の駆動信号線3と、を備えている。
図4は、図1の表示装置100のIV部における画像表示部20を構成する各部のレイアウトの一例を模式的に示す図である。
<1-1.表示装置の構成>
図5は、第1実施形態に係る表示装置100の構成の一例を模式的に示すブロック図である。図5で示されるように、表示装置100は、例えば、画像表示部20と、複数の駆動信号線3と、駆動部30と、を備えている。
画像表示部20は、例えば、複数の画素部2と、複数の発光制御信号線5と、を含む。
複数の駆動信号線3は、例えば、複数の発光制御信号線5のそれぞれに画像信号を供給することができる。複数の駆動信号線3は、例えば、n本の駆動信号線3を含む。より具体的には、複数の駆動信号線3は、例えば、第1駆動信号線31、第2駆動信号線32、第3駆動信号線33、・・・、第n駆動信号線3nを含む。ここでは、例えば、第1駆動信号線31は、第1画素部列C11に沿って位置している第1発光制御信号線5r、第2発光制御信号線5gおよび第3発光制御信号線5bのそれぞれに画像信号を供給することができる。例えば、第2駆動信号線32は、第2画素部列C12に沿って位置している第1発光制御信号線5r、第2発光制御信号線5gおよび第3発光制御信号線5bのそれぞれに画像信号を供給することができる。例えば、第3駆動信号線33は、第3画素部列C13に沿って位置している第1発光制御信号線5r、第2発光制御信号線5gおよび第3発光制御信号線5bのそれぞれに画像信号を供給することができる。例えば、第n駆動信号線3nは、第n画素部列C1nに沿って位置している第1発光制御信号線5r、第2発光制御信号線5gおよび第3発光制御信号線5bのそれぞれに画像信号を供給することができる。
図7は、切替部7および切替設定部9の一例を示す回路図である。図7には、x番目(xは、1からn-1の自然数)の切替部7である第x切替部7xと、x番目の切替設定部9である第x切替設定部9xと、が例示されている。
図7で示されるように、切替部7は、例えば、第1ゲート部分7G1と、第2ゲート部分7G2と、第3ゲート部分7G3と、信号入力部7Iと、を有する。
図7で示されるように、切替設定部9は、例えば、第1回路部9C1と、第2回路部9C2と、信号入力部9Iと、信号出力部9Uを有する。
切替設定部9においては、例えば、特定配線部分9Pの切断の有無に応じて、信号入力部9Iに入力される信号と信号出力部9Uから出力される信号との関係が切り替わる。
上述したように、例えば、表示装置100は、複数の駆動信号線3のそれぞれに1つずつ接続された複数の切替部7を備えており、複数の切替部7のそれぞれには、1本の通常駆動信号線3と、1本以上の別駆動信号線3が接続されている。そして、複数の切替部7のそれぞれは、例えば、駆動部30から1本の通常駆動信号線3を経由して対応する発光制御信号線5に画像信号を供給可能な第1導通状態と、駆動部30から1本以上の別駆動信号線3を経由して対応する発光制御信号線5に画像信号を供給可能な第2導通状態と、の何れかに選択的に設定され得る。これにより、例えば、発光制御信号線5に画像信号を供給するための通常駆動信号線3が断線した場合には、画像表示部20に配された切替部7によって該通常駆動信号線3とは別の駆動信号線3を介して発光制御信号線5に画像信号を供給することができる。その結果、例えば、表示装置100において、1つの画素部列C1において、画像信号が供給されずに暗くなる不具合(滅線)もしくは高輝度となる不具合(輝線)が生じにくくなる。したがって、例えば、表示装置100において、画像表示部20の外における駆動信号線3の断線による画質の低下が低減され得る。
本開示は上述の第1実施形態に限定されるものではなく、本開示の要旨を逸脱しない範囲において種々の変更および改良などが可能である。
上記第1実施形態において、例えば、図10で示されるように、複数の切替設定部9が、複数の切替設定部9Aに変更されてもよい。ここでは、複数の切替設定部9Aのそれぞれは、例えば、複数の切替部7のうちの該切替設定部9Aに接続された1つの切替部7に第1信号および第2信号のうちの何れかの信号を選択的に付与することができる。そして、例えば、複数の切替設定部9Aのそれぞれは、例えば、指定信号線群90からの該切替設定部9Aに対応する信号(指定信号ともいう)の付与に応じて、複数の切替部7のうちの該切替設定部9Aに接続された1つの切替部7に第2信号を付与することができる。これにより、例えば、特定配線部分9Pを切断する作業などの微細な作業を行うことなく、表示装置100における画像表示部20の外における駆動信号線3の断線による画質の低下を低減することができる。
上記第1実施形態および上記第2実施形態のそれぞれにおいて、例えば、図13で示されるように、複数の切替部7が、1本の通常駆動信号線3と、複数の駆動信号線3のうちの1本以上の別駆動信号線3としての2本以上の駆動信号線3と、がそれぞれ接続されている複数の切替部7Bに変更されてもよい。この場合には、例えば、複数の切替部7Bのそれぞれに接続されている1本以上の別駆動信号線3は、複数の駆動信号線3のうちの2本以上の別駆動信号線3を含む。ここでは、例えば、複数の切替部7Bのそれぞれは、第1導通状態において、駆動部30から1本の通常駆動信号線3を経由して、複数の発光制御信号線5のうちの対応する発光制御信号線5に画像信号を供給することができる。また、例えば、複数の切替部7Bのそれぞれは、第2導通状態において、駆動部30から1本の通常駆動信号線3とは異なる2本以上の別駆動信号線3を経由して、複数の発光制御信号線5のうちの該切替部7Bに対応する発光制御信号線5に画像信号を供給することができる。そして、例えば、複数の切替部7Bのそれぞれは、第2導通状態において、駆動部30から2本以上の別駆動信号線3にそれぞれ供給される2つ以上の画像信号の間の電圧の画像信号を、複数の発光制御信号線5のうちの該切替部7に対応する発光制御信号線5に供給してもよい。2つ以上の画像信号の間の電圧の画像信号としては、例えば、2つ以上の画像信号の平均の電圧を有する画像信号が採用される。
上記第1実施形態および上記第2実施形態のそれぞれにおいて、例えば、図14および図15で示されるように、複数の切替部7のそれぞれについて、該切替部7に接続された1本の別駆動信号線3が、複数の駆動信号線3のうちの該切替部7に接続された1本の通常駆動信号線3の隣に位置していない駆動信号線3であってもよい。換言すれば、例えば、1つの切替部7に接続された1本の通常駆動信号線3と1本の別駆動信号線3とは、互いに隣り合っていない2つの画素部列C1に対する2本の通常駆動信号線3である。このような構成が採用されれば、例えば、発光制御信号線5に画像信号を供給するための通常駆動信号線3と、この通常駆動信号線3の隣の駆動信号線3が断線した場合であっても、画像表示部20に配された切替部7によって別の駆動信号線3を介して発光制御信号線5に画像信号を供給することができる。その結果、例えば、表示装置100において、1つの画素部列C1において、画像信号が供給されずに暗くなる不具合(滅線)もしくは高輝度となる不具合(輝線)が生じにくくなる。したがって、例えば、表示装置100において、仮に隣り合う駆動信号線3が断線しやすい状況が生じたとしても、画像表示部20の外における駆動信号線3の断線による画質の低下が低減され得る。
上記第1実施形態および上記第2実施形態のそれぞれにおいて、例えば、図16から図20で示されるように、複数の切替部7のそれぞれについて、該切替部7に接続される1本の別駆動信号線3が、複数の駆動信号線3とは別に、駆動部30から画像信号が供給され得る予備的に配置された1本の別駆動信号線としての1本の駆動信号線(冗長駆動信号線ともいう)3Bに変更されてもよい。このような構成が採用されれば、例えば、発光制御信号線5に画像信号を供給する通常駆動信号線3が断線した場合には、画像表示部20に配された切替部7によって別駆動信号線である冗長駆動信号線3Bを介して発光制御信号線5に画像信号を供給することができる。これにより、例えば、表示装置100において、画像表示部20の外における駆動信号線3の断線による画質の低下が実質的に生じないようにすることができる。したがって、例えば、表示装置100における画像表示部20の外における駆動信号線3の断線による画質の低下が低減され得る。
上記第5実施形態において、例えば、図21および図22で示されるように、例えば、複数の冗長駆動信号線3Bのそれぞれは、第2面10b側から第1側面10c1上を経て第1面10a側に至るように位置しているとともに、第1側面10c1上において、複数の駆動信号線3の間には位置することなく、複数の駆動信号線3とは分かれて位置していてもよい。換言すれば、例えば、第1側面10c1を平面透視した場合に、第1側面10c1において、複数の駆動信号線3が配置されているエリアと、複数の冗長駆動信号線3Bが配置されているエリアと、が分かれていてもよい。これにより、例えば、基板10の第2面10b側および第1側面10c1上において複数の駆動信号線3を所定のピッチで配置することができるなど、複数の駆動信号線3の配置が容易となる。
上記第6実施形態において、例えば、図23および図24で示されるように、例えば、複数の駆動信号線3のそれぞれは、第2面10b側から第1側面10c1を経て第1面10a側に至るように位置し、複数の冗長駆動信号線3Bのうちの1本以上の冗長駆動信号線3Bは、第2面10b側から複数の側面10cのうちの第1側面10c1とは異なる側面10c上を経て第1面10a側に至るように位置していてもよい。換言すれば、複数の冗長駆動信号線3Bのうちの少なくとも1本以上の冗長駆動信号線3Bは、複数の駆動信号線3が配置されている第1側面10c1とは異なる側面10cを経るように、第2面10b側から側面10c上を経て第1面10a側に至るように位置していてもよい。これにより、例えば、基板10の1つの側面10cにおいて、複数の駆動信号線3を配置した上に、複数の冗長駆動信号線3Bを配置する余裕がない場合であっても、基板10の他の側面10c上に1本以上の冗長駆動信号線3Bを配置することで、複数の冗長駆動信号線3Bを容易に配置することができる。ここでは、例えば、複数の冗長駆動信号線3Bのうちの全ての冗長駆動信号線3Bが、複数の駆動信号線3が配置されている第1側面10c1とは異なる側面10cを経るように、第2面10b側から側面10c上を経て第1面10a側に至るように位置していてもよい。
上記第5実施形態から上記第7実施形態のそれぞれにおいて、例えば、図25で示されるように、複数の冗長駆動信号線3Bのそれぞれは、駆動部30から画像表示部20に至る2つ以上の配線部(冗長配線部ともいう)3Bpを有していてもよい。別の観点から言えば、冗長駆動信号線3Bは、画像表示部20において切替部7に接続されている分岐部分B1を含む第3冗長配線部分3Baから2つ以上の冗長配線部3Bpのそれぞれを介して駆動部30に至る構成を有していてもよい。この場合には、例えば、冗長駆動信号線3Bにおいて、通常は2つ以上の冗長配線部3Bpのうちの1つの冗長配線部3Bpを用いて駆動部30から切替部7への画像信号の供給を可能とし、該1つの冗長配線部3Bpが断線した場合には、2つ以上の冗長配線部3Bpのうちの他の1つの冗長配線部3Bpを用いて駆動部30から切替部7への画像信号の供給を可能とすることができる。これにより、例えば、熱的または機械的な歪みなどの各種要因によって、冗長駆動信号線3Bのうちの2つ以上の冗長配線部3Bpのうちの一部の冗長配線部3Bpが断線しても、他の冗長配線部3Bpを用いることで冗長駆動信号線3Bから発光制御信号線5への画像信号の供給が可能な状態が維持され得る。その結果、例えば、画像表示部20の外における駆動信号線3の断線による画質の低下が低減され得る。ここでは、例えば、複数の冗長駆動信号線3Bのうちの1本以上の冗長駆動信号線3Bが、駆動部30から画像表示部20に至る2つ以上の冗長配線部3Bpを有していてもよい。また、例えば、複数の冗長駆動信号線3Bのうちの一部の2本以上の冗長駆動信号線3Bのそれぞれが、駆動部30から画像表示部20に至る2つ以上の冗長配線部3Bpを有していてもよい。
上記各実施形態において、例えば、図26および図27で示されるように、複数の駆動信号線3のそれぞれは、駆動部30から画像表示部20に至る2つ以上の配線部3pを有していてもよい。ここでは、例えば、駆動信号線3は、画像表示部20において切替部7,7Bに接続されている第3配線部分3aから2つ以上の配線部3pのそれぞれを介して駆動部30に至る構成を有していてもよい。この場合には、例えば、複数の駆動信号線3のそれぞれにおいて、通常は2つ以上の配線部3pのうちの1つの配線部3pを用いて駆動部30から切替部7,7Bに画像信号を供給し、該1つの配線部3pが断線した場合には、2つ以上の配線部3pのうちの他の1つの配線部3pを用いて駆動部30から切替部7,7Bに画像信号を供給することができる。これにより、例えば、熱的または機械的な歪みなどの各種要因によって、駆動信号線3のうちの2つ以上の配線部3pのうちの一部の配線部3pが断線しても、他の配線部3pを用いることで駆動信号線3から発光制御信号線5への画像信号の供給が維持され得る。その結果、例えば、画像表示部20の外における駆動信号線3の断線による画質の低下が低減され得る。ここでは、例えば、複数の駆動信号線3のうちの1本以上の駆動信号線3が、駆動部30から画像表示部20に至る2つ以上の配線部3pを有していてもよい。また、例えば、複数の駆動信号線3のうちの一部の2本以上の駆動信号線3のそれぞれが、駆動部30から画像表示部20に至る2つ以上の配線部3pを有していてもよい。
上記各実施形態において、例えば、各切替部7,7Bの回路構成は、第1導通状態と第2導通状態とに選択的に設定される回路構成であれば、上述した具体的な回路構成に限られず、種々の回路構成を有していてもよい。例えば、切替部7が、第1ゲート部分7G1および第2ゲート部分7G2のそれぞれにおいて、NチャネルトランジスタとPチャネルトランジスタとが入れ替えられた回路構成を有する態様が考えられる。また、例えば、切替部7Bが、第1ゲート部分7G1、第2ゲート部分7G2および第4ゲート部分7G4のそれぞれにおいて、NチャネルトランジスタとPチャネルトランジスタとが入れ替えられた回路構成を有する態様が考えられる。また、例えば、第1ゲート部分7G1には、特定の1つ以上の信号の入力に応答して、通常駆動信号線3から発光制御信号線群50の発光制御信号線5への画像信号の供給が可能となる導通状態に設定されるものであれば、トランスファゲート素子以外の種々の回路または素子が適用されてもよい。例えば、第2ゲート部分7G2には、特定の1つ以上の信号の入力に応答して、別駆動信号線3から発光制御信号線群50の発光制御信号線5への画像信号の供給が可能となる導通状態に設定されるものであれば、トランスファゲート素子以外の種々の回路または素子が適用されてもよい。ここでは、各切替部7,7Bの回路構成によっては、例えば、第1信号にH信号が適用され、第2信号にL信号が適用されてもよい。この場合には、切替部7,7Bは、例えば、切替設定部9,9Aからの第1信号としてのH信号の付与によって第1導通状態に設定され、切替設定部9,9Aからの第2信号としてのL信号の付与によって第2導通状態に設定され得る。
100 表示装置
10a 第1面
10b 第2面
10c 側面
10c1~10c4 第1~4側面
2 画素部
20 画像表示部
2b 第3副画素部
2g 第2副画素部
2h 画像信号線駆動部
2r 第1副画素部
2v 走査信号線駆動部
3 駆動信号線(通常駆動信号線、別駆動信号線)
30 駆動部
3B 冗長駆動信号線
3Bp 冗長配線部
3p 配線部
5 発光制御信号線
50 発光制御信号線群
6 走査信号線
7,7B 切替部
9,9A 切替設定部
90 指定信号線群
900 タイリングディスプレイ
9P 特定配線部分
C1 画素部列
E1a~E4a 第1~4辺
E1b~E4b 第1~4辺
L1 指定信号線
R1 画素部行
Claims (18)
- 複数の画素部と、該複数の画素部のうちの画素部の列にそれぞれ画像信号を供給する複数の発光制御信号線と、を含む画像表示部と、
前記複数の発光制御信号線のそれぞれに画像信号を供給する複数の駆動信号線と、
前記複数の駆動信号線のそれぞれに画像信号を供給する駆動部と、を備え、
前記画像表示部は、前記複数の駆動信号線のそれぞれに1つずつ接続された複数の切替部、を含み、
前記複数の駆動信号線のうちの1本の通常駆動信号線と、該1本の通常駆動信号線とは異なる1本以上の別駆動信号線とは、対応する前記発光制御信号線に前記切替部を介して接続されており、
前記複数の切替部のそれぞれは、前記駆動部から前記1本の通常駆動信号線を経由して対応する前記発光制御信号線に画像信号を供給可能な第1導通状態と、前記駆動部から前記1本以上の別駆動信号線を経由して対応する前記発光制御信号線に画像信号を供給可能な第2導通状態と、の少なくとも何れかに選択的に設定可能である、表示装置。 - 請求項1に記載の表示装置であって、
前記1本以上の別駆動信号線は、前記複数の駆動信号線のうちの1本以上の駆動信号線である、表示装置。 - 請求項2に記載の表示装置であって、
前記1本以上の別駆動信号線は、前記複数の駆動信号線のうちの1本の駆動信号線である、表示装置。 - 請求項2に記載の表示装置であって、
前記1本以上の別駆動信号線は、前記複数の駆動信号線のうちの2本以上の別駆動信号線を含み、
前記複数の切替部のそれぞれは、前記第2導通状態において、前記駆動部から前記2本以上の別駆動信号線にそれぞれ供給される2つ以上の画像信号の間の電圧の画像信号を、対応する前記発光制御信号線に供給する、表示装置。 - 請求項3または請求項4に記載の表示装置であって、
前記複数の切替部のそれぞれについて、該切替部に接続された前記1本以上の別駆動信号線は、前記複数の駆動信号線のうちの該切替部に接続された前記1本の通常駆動信号線の隣に位置している駆動信号線である、表示装置。 - 請求項3または請求項4に記載の表示装置であって、
前記複数の切替部のそれぞれについて、該切替部に接続された前記1本以上の別駆動信号線は、前記複数の駆動信号線のうちの該切替部に接続された前記1本の通常駆動信号線の隣に位置していない駆動信号線である、表示装置。 - 請求項1に記載の表示装置であって、
前記複数の駆動信号線のうちの2本以上の駆動信号線ごとに1本ずつ位置している複数の冗長駆動信号線、を備え、
前記駆動部は、前記複数の冗長駆動信号線のそれぞれに画像信号を供給することが可能であり、
前記複数の切替部は、前記2本以上の駆動信号線ごとに、該2本以上の駆動信号線のそれぞれに1つずつ接続されているとともに、前記複数の冗長駆動信号線のうちの1本の冗長駆動信号線が分岐してそれぞれ接続している2つ以上の切替部、を含み、
前記1本以上の別駆動信号線は、前記1本の冗長駆動信号線である、表示装置。 - 請求項7に記載の表示装置であって、
第1面と、該第1面の逆側の第2面と、前記第1面と前記第2面とを接続している複数の側面と、を有する基板、を備え、
前記画像表示部は、前記基板のうちの前記第1面側に位置しており、
前記駆動部は、前記基板のうちの前記第2面側に位置しており、
前記複数の側面は、前記第1面の第1辺と前記第2面の第1辺とを接続している第1側面を含み、
前記複数の駆動信号線のそれぞれは、前記第2面側から前記第1側面上を経て前記第1面側に至るように位置し、
前記複数の冗長駆動信号線のそれぞれは、前記第2面側から前記第1側面上を経て前記第1面側に至るように位置し、
前記2本以上の駆動信号線ごとに、前記1本の冗長駆動信号線は、前記第1側面上において該2本以上の駆動信号線の間または該2本以上の駆動信号線の隣に位置している、表示装置。 - 請求項7に記載の表示装置であって、
第1面と、該第1面の逆側の第2面と、前記第1面と前記第2面とを接続している複数の側面と、を有する基板、を備え、
前記画像表示部は、前記基板のうちの前記第1面側に位置しており、
前記駆動部は、前記基板のうちの前記第2面側に位置しており、
前記複数の側面は、前記第1面の第1辺と前記第2面の第1辺とを接続している第1側面を含み、
前記複数の駆動信号線のそれぞれは、前記第2面側から前記第1側面上を経て前記第1面側に至るように位置し、
前記複数の冗長駆動信号線のそれぞれは、前記第2面側から前記第1側面上を経て前記第1面側に至るように位置しているとともに、前記第1側面上において、前記複数の駆動信号線の間には位置することなく、前記複数の駆動信号線とは分かれて位置している、表示装置。 - 請求項7に記載の表示装置であって、
第1面と、該第1面の逆側の第2面と、前記第1面と前記第2面とを接続している複数の側面と、を有する基板、を備え、
前記画像表示部は、前記基板のうちの前記第1面側に位置しており、
前記駆動部は、前記基板のうちの前記第2面側に位置しており、
前記複数の側面は、前記第1面の第1辺と前記第2面の第1辺とを接続している第1側面を含み、
前記複数の駆動信号線のそれぞれは、前記第2面側から前記第1側面上を経て前記第1面側に至るように位置し、
前記複数の冗長駆動信号線のうちの1本以上の冗長駆動信号線は、前記第2面側から前記複数の側面のうちの前記第1側面とは異なる側面上を経て前記第1面側に至るように位置している、表示装置。 - 請求項7から請求項10の何れか1つの請求項に記載の表示装置であって、
前記複数の冗長駆動信号線のうちの1本以上の冗長駆動信号線は、前記駆動部から前記画像表示部に至る2つ以上の配線部を有する、表示装置。 - 請求項7から請求項11の何れか1つの請求項に記載の表示装置であって、
前記複数の冗長駆動信号線は、前記駆動信号線よりも抵抗が低い前記冗長駆動信号線を含む、表示装置。 - 請求項8から請求項10の何れか1つの請求項に記載の表示装置であって、
前記冗長駆動信号線は、前記第2面上に位置する第1冗長配線部分と、前記側面上に位置する第2冗長配線部分と、前記第1面上に位置する第3冗長配線部分と、を含み、
前記第2冗長配線部分は、前記第1冗長配線部分および前記第3冗長配線部分のいずれよりも幅が広い構成および/または厚みが厚い構成である、表示装置。 - 請求項1から請求項13の何れか1つの請求項に記載の表示装置であって、
前記複数の駆動信号線のうちの1本以上の駆動信号線は、前記駆動部から前記画像表示部に至る2つ以上の配線部を有する、表示装置。 - 請求項8から請求項10の何れか1つの請求項に記載の表示装置であって、
前記駆動信号線は、前記第2面上に位置する第1配線部分と、前記側面上に位置する第2配線部分と、前記第1面上に位置する第3配線部分と、を含み、
前記第2配線部分は、前記第1配線部分および前記第3配線部分のいずれよりも幅が広い構成および/または厚みが厚い構成である、表示装置。 - 請求項1から請求項15の何れか1つの請求項に記載の表示装置であって、
前記画像表示部は、前記複数の切替部のそれぞれに1つずつ接続された複数の切替設定部、を含み、
該複数の切替設定部のそれぞれは、前記複数の切替部のうちの該切替設定部に接続された1つの切替部に第1信号および第2信号のうちの何れかの信号を選択的に付与し、
前記複数の切替部のそれぞれは、前記複数の切替設定部のうちの該切替部に接続された1つの切替設定部からの前記第1信号の付与によって前記第1導通状態に設定され、前記1つの切替設定部からの前記第2信号の付与によって前記第2導通状態に設定される、表示装置。 - 請求項16に記載の表示装置であって、
前記複数の切替設定部のそれぞれは、特定の配線部分を含み、該特定の配線部分の切断に応じて前記複数の切替部のうちの該切替設定部に接続された1つの切替部に前記第2信号に付与する、表示装置。 - 請求項16に記載の表示装置であって、
前記複数の切替設定部のそれぞれは、複数の指定信号線からの該切替設定部に対応する指定信号の付与に応じて、前記複数の切替部のうちの該切替設定部に接続された1つの切替部に前記第2信号を付与する、表示装置。
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH0915557A (ja) * | 1995-06-26 | 1997-01-17 | Sharp Corp | データ信号線駆動回路および走査信号線駆動回路並びに画像表示装置 |
JP2007293329A (ja) * | 2006-03-31 | 2007-11-08 | Canon Inc | 表示装置 |
WO2010122624A1 (ja) * | 2009-04-23 | 2010-10-28 | パナソニック株式会社 | 表示装置のデータ線駆動回路 |
US20150294618A1 (en) * | 2014-04-09 | 2015-10-15 | Samsung Display Co., Ltd. | Organic light-emitting display |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH0915557A (ja) * | 1995-06-26 | 1997-01-17 | Sharp Corp | データ信号線駆動回路および走査信号線駆動回路並びに画像表示装置 |
JP2007293329A (ja) * | 2006-03-31 | 2007-11-08 | Canon Inc | 表示装置 |
WO2010122624A1 (ja) * | 2009-04-23 | 2010-10-28 | パナソニック株式会社 | 表示装置のデータ線駆動回路 |
US20150294618A1 (en) * | 2014-04-09 | 2015-10-15 | Samsung Display Co., Ltd. | Organic light-emitting display |
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