JP2006243322A - Panel assembly and display module of traveling object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a panel assembly in which thickness of a display panel portion is reduced and to provide a display module of a traveling object. <P>SOLUTION: A panel assembly 1 is made into a condition, in which a flexible wiring substrate 211 is folded so that one surface 101a of a panel control substrate 101 is abutted to a surface 12a of a sealed substrate 12, and a connector 121 arranged on the surface 101a is stored into a space 51 made by a difference in level 50 of the periphery of an organic EL panel 2. Thus, the thickness of the organic EL panel 2 portion is reduced for equivalent to the thickness of the connector 121. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is mounted on a panel assembly including a display panel such as an organic EL panel and a moving body such as a vehicle such as an automobile, an aircraft, a ship, and a train, and the speed of the moving body, the engine speed, and a map of a navigation device. The present invention relates to a display module of a moving object that displays information and the like.

In recent years, an organic EL panel using an organic electroluminescence (hereinafter referred to as EL) element has attracted attention as being superior to other devices in terms of low power consumption specific power, high viewing angle, and high contrast ratio. As an organic EL display device using such an organic EL panel, an organic EL panel and a flexible wiring board connected to the organic EL panel are mounted, and a driver IC is mounted on the flexible wiring board. There is known an electronic module configured to drive (see, for example, FIG. 14 of Patent Document 1). In this organic EL display device, the light emitting element substrate of the organic EL panel is provided with a data line pad that is a connection terminal portion of a plurality of data lines and a power supply line pad that is a connection terminal portion of a plurality of power supply lines. .
JP 2004-127924 A

  By the way, in the conventional organic EL display device as described in Patent Document 1, the output side terminal portion of the flexible wiring board is electrically connected to the data line pad and the power line pad of the organic EL panel, respectively. In addition, a control circuit for controlling the organic EL panel is electrically connected to each input side terminal portion of the flexible wiring board connected to each of the data line pad and the power line pad. As described above, a plurality of flexible wiring boards that are electrically connected to a control circuit or the like are connected to the organic EL panel, and the outer shape of the entire apparatus is overlapped with the substrate on which the control circuit or the like is formed on the organic EL panel. If there is an attempt to reduce the size, the control circuit has various electronic components, so that the portion of the organic EL panel becomes thick. Such a problem is not limited to the organic EL display device. In other display devices, there is a demand to make the display panel portion as thin as possible.

  The present invention has been made paying attention to such conventional problems, and an object of the present invention is to provide a panel assembly in which a display panel portion is thinned, and a display module for a moving body.

  A display panel according to the present invention includes a display panel having an element substrate on which a plurality of pixels arranged in a matrix corresponding to intersections of a plurality of scanning lines and a plurality of data lines is formed. In the panel assembly for driving each pixel based on the above, a panel control board provided with a panel control circuit for controlling the driving of each pixel, and an output side terminal part at the connection terminal part of the element board, the panel control circuit And at least one flexible wiring board to which each of the input side terminal portions is electrically connected, and the flexible wiring board is bent so that one surface of the panel control board is brought into contact with the back surface of the display panel. In this state, it is necessary that the electronic component arranged on the one surface is placed in a space formed by a step on the peripheral edge of the display panel. To.

According to this, in a state in which the flexible wiring board is bent and one surface of the panel control board is brought into contact with the back surface of the display panel, the electronic component arranged on the one surface can be formed by a step on the peripheral edge of the display panel. Since it fits in the space, the display panel can be made thinner by the thickness of the electronic component. Here, the “display panel” is an organic EL panel using an organic EL element as a light emitting element, for example. “The back surface of the display panel” refers to the surface opposite to the surface from which the light emitted from each organic EL element is emitted when the display panel is an organic EL panel. Further, the “step on the periphery of the display panel” is a step between the light emitting element substrate and the sealing substrate bonded thereto when the display panel is an organic EL panel.

  In this panel assembly, the flexible wiring board is a composite flexible wiring board in which a power supply line, a data supply line, and a control signal line are formed, and is connected to the input side terminal portion of the composite flexible wiring board. The connector is provided on the one surface of the panel control board, in a state where the flexible wiring board is bent and the one surface of the panel control board is brought into contact with the back surface of the display panel, The gist is that the connector is configured to fit in the space.

  According to this, in the configuration in which the connection terminal portion of the element substrate and the panel control circuit are connected via the composite flexible wiring substrate, the display panel portion can be thinned. Here, the “composite flexible wiring board” refers to a board on which a plurality of types of wiring including a power supply line, a data supply line, and a control signal line are formed. Further, in this specification, a substrate on which at least the power supply line is formed among the power supply line and the control signal line is referred to as “a flexible wiring substrate for power supply”, and at least the data among the data supply line and the control signal line is data. The substrate on which the supply line is formed is called a “data flexible wiring substrate”.

  In the panel assembly, the plurality of data lines are divided into a plurality of blocks and driven, and the composite flexible wiring board is provided for each block. According to this, even when a plurality of data lines are divided into a plurality of blocks and driven, the display panel portion can be thinned.

  In this panel assembly, as the flexible wiring board, a power flexible wiring board on which at least a power supply line is formed, and a data flexible wiring on which the power supply flexible wiring board is disposed so as to overlap with the power flexible wiring board. The output side terminal portion of the power supply flexible wiring substrate and the output side terminal portion of the data flexible wiring substrate are arranged in a direction perpendicular to the arrangement direction of the data lines on the element substrate. The power supply line pad and the data line pad provided at the shifted positions are respectively electrically connected, and the input side terminal part of the flexible wiring board for power supply and the input side terminal part of the flexible wiring board for data are the panel Electrically connected to connectors provided on the one side and the other side of the control board. The power supply flexible wiring board and the data flexible wiring board that are overlapped with each other are bent and the one surface of the panel control board is brought into contact with the back surface of the display panel. The gist of the invention is that the arranged connector is configured to fit in a space formed by the step.

  According to this, the power supply line pad of the element board and the panel control circuit are electrically connected via the flexible wiring board for power supply, and the data line pad of the element board and the panel control circuit overlap with the flexible wiring board for power supply. In the configuration in which the display panel portion is electrically connected via the flexible wiring board, the display panel portion can be thinned. The “power supply line pad” here is a connection terminal portion dedicated to the power supply line formed on the element substrate and connected to each terminal of a plurality of power supply lines for supplying power to the pixel circuit of each pixel. In addition, when the display panel is an organic EL panel, the plurality of power supply lines is a thick belt-like power supply line provided for each of R (red), G (green), and B (blue) pixels, and four ground lines. It is a kind. Further, the “data line pad” is a connection terminal portion dedicated to the data line formed on the element substrate and connected to the terminals of the plurality of data lines.

  In this panel assembly, the plurality of data lines are divided into a plurality of blocks and driven, and the flexible wiring board for power supply and the flexible wiring board for data are provided for each block. And According to this, even when a plurality of data lines are divided into a plurality of blocks and driven, the display panel portion can be thinned.

  In this panel assembly, a plurality of flexible wiring boards are arranged on both sides of the display panel, and the panel control boards are connected to the left and right flexible wiring boards arranged on both sides of the display panel. The gist is that the left and right panel control boards connected to the left and right flexible wiring boards can be brought into contact with the back surface of the display panel by bending the flexible wiring board. According to this, even when the plurality of data lines are divided into a plurality of blocks and driven by the panel control circuits of the left and right panel control boards connected to the left and right flexible wiring boards, the display panel portion is reduced in thickness. be able to. In particular, it is effective for a panel assembly having a configuration in which a plurality of data lines are divided into a number of blocks and driven.

  In this panel assembly, the display panel is an electroluminescence display panel using an electroluminescence element for each pixel, and the electroluminescence display panel includes an element substrate having a plurality of pixels on which the electroluminescence element is formed; A sealing substrate bonded to the element substrate so as to seal the plurality of pixels, and the step is a step between the element substrate and the sealing substrate having an outer shape smaller than the element substrate. The gist. According to this, in the panel assembly provided with the electroluminescence display panel, the display panel portion can be thinned.

  A mobile display module according to the present invention includes a plurality of the panel assemblies described above, and the plurality of panel assemblies include, in the two adjacent display panels, the end of the element substrate of one display panel is the other display panel. The gist of the present invention is that it is disposed in a space formed by the step.

  According to this, since the plurality of panel assemblies are arranged so that the end of the element substrate of one of the two adjacent display panels is located in a space formed by the level difference of the other display panel. Thus, a display module with a thin moving body can be realized. In addition, the non-display areas of the adjacent display panels overlap each other in a planar manner, and the display areas of the adjacent display panels are close to each other. For example, a map of a vehicle speedometer, tachometer, car navigation device is displayed by a plurality of display panels. When different images such as a screen are displayed, a display close to a normal meter is possible. Here, the “non-display area” is a so-called frame of the display panel and refers to an area around the display area in which a plurality of pixels are two-dimensionally arranged.

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings. In the description of each embodiment, similar parts are denoted by the same reference numerals, and redundant description is omitted.
(First embodiment)
A panel assembly according to the first embodiment will be described with reference to FIGS.

A panel assembly 1 according to the first embodiment is an organic EL display device including an organic EL panel 2 as a display panel. As shown in FIGS. 1, 2, and 4, the organic EL panel 2 includes a light emitting element substrate 11 in which a plurality of pixels 210A each having an organic EL element 221 that is an electroluminescence element as a light emitting element are arranged in a matrix. And a sealing substrate 12 bonded to the light emitting element substrate 11 so as to seal the plurality of pixels 210A. The organic EL panel 2 includes the organic EL element 2 of each pixel 210A based on the image data of each pixel 210A.
21 is driven. In FIG. 1, reference numeral 14 denotes a display area in which a plurality of pixels 210A are arranged in a matrix, and reference numeral 15 denotes a so-called frame (non-display area).

  Although not shown in FIG. 1, a rectangular pixel electrode that functions as an anode is formed in a matrix on the light emitting element substrate 11 as an element substrate, and, for example, holes are formed on each pixel electrode. An injection / transport layer and a light emitting layer are sequentially laminated, and a cathode is formed over almost the entire surface of the substrate on which the light emitting layer is formed. Each pixel electrode is electrically connected to a thin film transistor (TFT) or the like. Each pixel electrode, a hole injection / transport layer formed on the pixel electrode, a light emitting layer, and a cathode are used to form each pixel 210A. An organic EL element 221 is configured. FIG. 4 shows only one of the plurality of pixels 210A.

  On the light emitting element substrate 11, as shown in FIGS. 1 and 4, both terminals of a plurality of power supply lines for supplying power to the pixel circuit 220 of each pixel 210A and terminals of a plurality of data lines X1 to Xm are provided. Are provided with connection terminal portions 411 and 412, respectively. The organic EL panel 2 is driven by dividing the plurality of data lines X1 to Xm into two blocks. That is, each organic EL element 221 of m pixels 210A in each row is driven in two blocks. Therefore, the connection terminal portion 411 and the connection terminal portion 412 are provided for each block. That is, the connection terminal portion 411 is provided in the first block, and the connection terminal portion 412 is provided in the second block. The connection terminal portion 411 includes three terminals connected to the power lines of the pixel circuit 220 for each of the R, G, and B pixels 210A and the terminals of the data lines X1 to X (m / 2) of the first block. A power supply line and terminals of the four power supply lines for the ground are formed. The connection terminal portion 412 is formed with the terminals of the data lines X (m / 2 + 1) to Xm of the second block and the terminals of the four power supply lines.

  The panel assembly 1 includes an organic EL panel 2 having the above-described configuration and two flexible wiring boards 211 and 212 connected to the panel. These two flexible wiring boards 211 and 212 are composite type flexible wiring boards on which a power supply line, a data supply line, and a control signal line are respectively formed. The flexible wiring boards 211 and 212 are mounted with driver ICs 103a and 103b as data line driving circuits for driving the data lines X1 to X (m / 2) and X (m / 2 + 1) to Xm of the two blocks, respectively. Has been.

  The output side terminal portions of the flexible wiring substrates 211 and 212 are electrically connected to the connection terminal portion 411 and the connection terminal portion 412 on the light emitting element substrate 11 through an adhesive of an anisotropic conductive film.

  Further, the panel assembly 1 includes a panel control board 101 provided with a panel control circuit 100 (see FIG. 4) that controls driving of the organic EL elements 221 of each pixel 210A. The panel control circuit 100 is electrically connected to the input side terminal portions of the flexible wiring boards 211 and 212, respectively.

  As shown in FIG. 1, the two input side terminal portions of the flexible wiring board 211 are respectively inserted into connectors 121 and 122 provided on one surface 101 a of the panel control board 101, and are electrically connected to the panel control circuit 100. Connected to. Further, the two input side terminal portions of the flexible wiring board 212 are respectively inserted into connectors 123 and 124 provided on one surface 101 a of the panel control board 101 so as to be electrically connected to the panel control circuit 100. It has become. One surface 101a of the panel control board 101 is formed on the organic EL panel 2 when the flexible wiring boards 211 and 212 are folded as shown in FIG. 2 from the state in which the panel control board 101 is opened as shown in FIG. It is the surface on the side that comes into contact with the front surface 12a of the sealing substrate 12, which is the back surface.

  The panel assembly 1 is an electronic component disposed on one surface 101a in a state where the flexible wiring substrates 211 and 212 are bent and the one surface 101a of the panel control substrate 101 is in contact with the surface 12a of the sealing substrate 12. The connectors 121 to 124 are accommodated in a space 51 formed by the step 50 on the periphery of the organic EL panel 2 (see FIG. 3).

  On the other surface 101b of the panel control board 101, as shown in FIG. 2, a connector 127 for electrically connecting an external control circuit (not shown) to the panel control circuit 100 and an electronic component 128 are provided. ing. The panel control circuit 100 includes a control signal O, drive data P, and a panel power supply Q as signals for causing the organic EL panel 2 to display using a control signal, display image data, and a power signal sent from an external control circuit. (Refer to FIG. 4) are output.

Next, the electrical configuration of the panel assembly 1 including the organic EL panel 2 will be described with reference to FIGS. 4 and 5.
The panel assembly 1 shown in FIG. 4 employs a current programming method. The panel assembly 1 includes an organic EL panel 2, two driver ICs 103a and 103b configured as data line driving circuits, scanning line driving circuits 106L and 106R, and a panel control circuit 100.

  As shown in FIG. 4, the organic EL panel 2 includes n first scanning lines Y1 to Yn (n is an integer) extending in the row direction and m data lines X1 to Xm (m is an integer) extending in the column direction. There are a plurality of pixels 210A arranged in n rows and m columns at locations corresponding to the intersections. The organic EL panel 2 has n second scanning lines Y11 to Yn1 extending in the row direction. In the plurality of pixels 210A, for example, a red pixel, a green pixel, and a blue pixel are arranged in the order of R, G, and B. Further, the plurality of data lines X1 to Xm are divided into two blocks, and the data lines of each block are divided and driven by the two driver ICs 103a and 103b. The driver IC 103a drives the data lines X1 to X (m / 2), and the driver IC 103b drives the data lines X (m / 2 + 1) to Xm.

  The scanning line driving circuit 106L sequentially generates and outputs an H level program period selection signal Vprg (see FIGS. 5A and 5B) at a timing according to the synchronization signal Sync and the clock signal clock supplied from the outside. Thus, the first scanning lines Y1 to Yn are sequentially selected one by one by line sequential scanning. In FIG. 5B, among the first scan lines Y1 to Yn, only the program period (the period from the time point t1 to the time point t2) in which the program period selection signal Vprg is output to the first scan line Y1 in the first row. Is shown.

  The scanning line driving circuit 106R sequentially generates and outputs an H-level light emission period selection signal Vrep (see FIG. 5B) at a timing according to the synchronization signal Sync and the clock signal clock supplied from the outside. The second scanning lines Y11 to Yn1 are selected one by one by line sequential scanning. In FIG. 5B, among the second scanning lines Y11 to Yn1, the light emission period (time t2 to time t3) during which the H-level light emission period selection signal Vrep is output to the second scanning line Y11 in the first row. Only period). Then, the driver ICs 103a and 103b transmit the program signal current Isig (FIG. 5 (FIG. 5) to the pixel circuits 220 connected to the selected first scanning line through the data lines X1 to Xm, respectively. b)) is supplied all at once.

Each program signal current Isig is a current obtained by D-A converting the image data of each pixel for red, green and blue, which is n-bit digital gradation data for gradation display, in each of the driver ICs 103a and 103b. Signal. In this example, the image data of each pixel 210 </ b> A is digital gradation data that represents the brightness of each pixel in an 8-bit binary number, and takes 256 gradation values from 0 to 255.

  As shown in FIG. 5, each of the driver ICs 103a and 103b has a data writing circuit (sampling circuit) for writing the program signal current Isig to each pixel circuit 220 via the data lines X1 to Xm, and the operation timing of the data writing circuit. A shift register, a latch circuit, a digital / analog converter and the like are provided. The latch circuit stores the image data of each pixel in a data memory (not shown) provided for each pixel and holds one row of image data. During the program period, the image data stored in each data memory is stored. It is read all at once and output to a digital / analog converter.

  Each of the pixel circuits 220 for the red pixel, the green pixel, and the blue pixel described above includes an organic EL element 221 that emits red, green, and blue light from a light-emitting layer formed of an organic semiconductor material. . Each pixel circuit 220 has the same circuit configuration except that the color of light emitted from each organic EL element 221 is different.

The configuration of the pixel circuit 220 will be described with reference to FIG.
The pixel circuit 220 includes a driving transistor Tdr, a programming transistor Tprg, a programming selection transistor Tsig, a light emission selection transistor Trep, and a storage capacitor Cstg. The drive transistor Tdr is composed of a P-channel TFT. The programming transistor Tprg, the programming selection transistor Tsig, and the light emission selection transistor Trep are each configured by an N-channel TFT.

  The drain of the driving transistor Tdr is connected to the anode of the organic EL element 221 via the selection transistor Trep during light emission, and the cathode of the organic EL element 221 is grounded. Further, the drain of the drive transistor Tdr is connected to one data line (data line X1 in FIG. 5A) via the program selection transistor Tsig. The source of the driving transistor Tdr is connected to a power supply line to which a high potential power supply Vdd is supplied via the power supply line. Furthermore, the gate of the drive transistor Tdr is connected to the first electrode of the storage capacitor Cstg, and the second electrode of the storage capacitor Cstg is connected to the high potential power supply Vdd. The programming transistor Tprg is connected between the gate and drain of the driving transistor Tdr.

  Each gate of the program selection transistor Tsig and the program transistor Tprg is connected to one of the first scanning lines (Y1 in the figure). The programming selection transistor Tsig and the programming transistor Tprg are turned on in response to the H level programming period selection signal Vprg from the first scanning line Y1, and are turned off in response to the L level Vprg. In this embodiment, when the programming selection transistor Tsig and the programming transistor Tprg are turned on, the program signal current Isig is supplied to the data line X1.

  The gate of the light-emission selection transistor Trep is connected to one of the second scanning lines (Y11 in the figure). In addition, the light emission selection transistor Trep is turned on in response to the H level light emission period selection signal Vrep from the second scanning line Y11, and is turned off in response to the L level Vrep. When the light-emission selection transistor Trep is turned on, the drive transistor supply current Idr based on the on state of the drive transistor Tdr is supplied to the organic EL element 221 as the OLED supply current Ioled.

Next, the operation of each pixel circuit 220 will be briefly described with reference to FIG.
1. Program Period Now, when the H-level program period selection signal Vprg is supplied from the first scanning line Y1, the programming transistor Tprg and the programming time selection transistor Tsig are set to the ON state. At this time, the L-level light emission period selection signal Vrep is supplied from the second scanning line Y11, and the light-emission selection transistor Trep is set to an off state. At this time, the program signal current Isig is supplied to the data line X1. Then, when the programming transistor Tprg is turned on, the driving transistor Tdr is diode-connected. As a result, the program signal current Isig flows through a path of the driving transistor Tdr → the programming selection transistor Tsig → the data line X1. At this time, charges corresponding to the gate potential of the drive transistor Tdr are accumulated in the storage capacitor Cstg.

2. Light-Emitting Period From this state, when the program period selection signal Vprg becomes L level and the light-emission period selection signal Vrep becomes H level, the programming transistor Tprg and the programming time selection transistor Tsig are set to the off state, and the light emission time selection transistor Trep Set to the on state. At this time, since the charge accumulation state of the holding capacitor Cstg does not change, the gate potential of the driving transistor Tdr is held at the voltage when the program signal current Isig flows. Accordingly, a drive transistor supply current Idr (OLED supply current Ioled) having a magnitude corresponding to the gate voltage flows between the source and drain of the drive transistor Tdr. Specifically, the OLED supply current Ioled flows through a path of the drive transistor Tdr → the light-emission selection transistor Trep → the organic EL element 221. As a result, the organic EL element 221 emits light with a luminance corresponding to the OLED supply current Ioled (program signal current Isig).

Such an operation is sequentially performed in each pixel circuit 220 connected to each of the first scanning lines Y2 to Yn, and display for one frame is performed.
Thus, the panel assembly 1 according to the present embodiment includes a plurality of pixels 210A arranged in a matrix, and the organic EL element 221 provided in each pixel 210A is for red, which is 8-bit digital gradation data. It is driven based on the image data of each pixel for green and blue.

According to 1st Embodiment comprised as mentioned above, there exist the following effects.
A connector disposed on one surface of the flexible printed circuit board 211, 212 in a state where the one surface 101a of the panel control substrate 101 is in contact with the front surface 12a of the sealing substrate 12 (the back surface of the display panel). 121 to 124 are made to fit in a space 51 formed by the step 50 on the periphery of the organic EL panel 2 (see FIGS. 2 and 3). For this reason, the organic EL panel 2 can be made thinner by the thickness of each of the connectors 121 to 124 that are electronic components.

  ○ Thinning of the organic EL panel 2 portion in the configuration in which the connection terminal portions 411 and 412 of the light emitting element substrate 11 and the panel control circuit 100 are connected via the flexible wiring substrates 211 and 212 which are composite flexible wiring substrates. Can be achieved.

  The flexible wiring boards 211 and 212 that are composite type flexible wiring boards are provided for each block in which a plurality of data lines are divided into two blocks. That is, the connection terminal portion 411 is provided in the first block, and the connection terminal portion 412 is provided in the second block. Thereby, even when a plurality of data lines are divided into a plurality of blocks and driven, the thickness of the organic EL panel 2 can be reduced.

(Second Embodiment)
A panel assembly 1 according to a second embodiment will be described with reference to FIGS.
In this panel assembly 1, terminals of a plurality of power supply lines for supplying power to the pixel circuit 220 of each pixel 210A are formed on the light emitting element substrate 11 of the organic EL panel 2 as shown in FIGS. The power supply line pads 501 to 504 and the data line pads 401 and 402 to which the terminals of the plurality of data lines X1 to Xm are connected are two-dimensionally arranged. The data line pads 401 and 402 are arranged side by side on the mounting side end portion (lower end portion in FIG. 9) of the light emitting element substrate 11, and the power line pads 501 to 504 are arranged on the light emitting element substrate 11. They are arranged behind the data line pads 401 and 402 when viewed from the mounting side end.

  That is, the power supply line pads 501 to 504 are not provided between the data line pads 401 and 402, and are shifted in a direction perpendicular to the longitudinal direction (left and right direction in FIG. 9) of the data line pads 401 and 402. Has been placed. Since the power line pads 501 to 504 are not provided at the mounting side end of the light emitting element substrate 11 on which the data line pads 401 and 402 are arranged in this manner, the data line pads 401 and 402 are formed on the light emitting element substrate 11. It is formed by using the entire region between the right and left necessary sealing widths Dg by the sealing substrate 12. Here, the “region between the left and right required sealing widths Dg” means the left and right required sealing widths (left and right widths in FIG. 9) of the light emitting element substrate 11 in the arrangement direction of the plurality of data lines. The area excluding 2 × Dg).

  The organic EL panel 2 is driven by dividing the plurality of data lines X1 to Xm into two blocks. That is, each organic EL element 221 of m pixels 210A in each row is driven in two blocks. Therefore, the power supply line pads 501 to 504 and the data line pads 401 and 402 are provided for each block. That is, the first block is provided with the data line pad 401 and the two power supply line pads 501 and 502, and the second block is provided with the data line pad 402 and the two power supply line pads 503 and 504, respectively.

  The power supply line pads 501 and 502 are disposed on the light emitting element substrate 11 at positions corresponding to both ends of the data line pad 401 behind the data line pad 401 as viewed from the mounting side end. Yes. Further, the power supply line pads 503 and 504 are also disposed on the light emitting element substrate 11 at positions corresponding to both end portions of the data line pad 402 at a position deeper than the data line pad 402 when viewed from the mounting side end side. (See FIG. 9).

  In the data line pad 401, the terminals of the data lines X1 to X (m / 2) of the first block are formed. The data line pad 402 is formed with terminals of data lines X (m / 2 + 1) to Xm of the second block. In other words, m / 2 data line terminals are formed on the data line pads 401 and 402, respectively.

  The power supply line pad 501 includes m / 4 pixels 210A corresponding to the data lines X1 to X (m / 4) which are half the data lines X1 to X (m / 2) of the first block in each row. For each R, G, B pixel 210A, three power supply lines connected to the power supply line of the pixel circuit 220 and four terminals of the ground four power supply lines are formed.

  The power line pad 502 includes m / 4 corresponding to the remaining half of the data lines X (m / 4 + 1) to X (m / 2) of the first block of data lines X1 to X (m / 2) in each row. For each R, G, B pixel 210A included in each pixel 210A, three power supply lines connected to the power supply line of the pixel circuit 220 and each terminal of four ground power supply lines are formed. .

  The power line pad 503 includes m corresponding to the data lines X (m / 2 + 1) to X (3m / 4) which are half of the data lines X (m / 2 + 1) to X (m) of the second block in each row. / For each R, G, B pixel 210A included in the four pixels 210A, three power supply lines connected to the power supply line of the pixel circuit 220 and four terminals of the ground four power supply lines are formed. ing.

  Similarly, the power line pad 504 has m / 4 corresponding to the remaining half (3m / 4 + 1) to X (m) of the data lines X (m / 2 + 1) to X (m) of the second block in each row. For each R, G, B pixel 210A included in each pixel 210A, three power supply lines connected to the power supply line of the pixel circuit 220 and each terminal of four ground power supply lines are formed. .

  As shown in FIG. 6, the panel assembly 1 includes an organic EL panel 2 having the above-described configuration and four flexible wiring boards connected to the panel. As these four flexible wiring boards, two flexible wiring boards for data 201 and 202 and two flexible wiring boards for power supply 301 and 302 are provided.

  As shown in FIG. 9, a plurality of power supply lines 301a and 302a for supplying power to the pixel circuit 220 of each pixel 210A are formed on the flexible power supply substrates 301 and 302 for power supply, respectively. The power supply flexible wiring board 301 has a shape having one input-side terminal portion 301b and two output-side terminal portions 301c and 301d which are divided into two forks. Similarly, the power supply flexible wiring board 302 has a shape having one input side terminal portion 302b and two output side terminal portions 302c and 302d divided into two branches.

  On the other hand, on the flexible wiring boards for data 201 and 202, driver ICs 103a and 103b as data line driving circuits for driving the data lines X1 to X (m / 2) and X (m / 2 + 1) to Xm of the two blocks, respectively. Has been implemented. The data flexible wiring boards 201 and 202 are formed with a plurality of input-side wirings 201a and 202a and a plurality of output-side wirings 201b and 202b.

  As shown in FIGS. 6 and 9, the output side terminal portions 301 c and 301 d of the power supply flexible wiring substrate 301 are thermocompression bonded to the power supply line pads 501 and 502 via an anisotropic conductive film adhesive. Is electrically connected. Similarly, the output-side terminal portions 302c and 302d of the power supply flexible wiring board 302 are electrically connected to the power supply line pads 503 and 504 by thermocompression bonding using an anisotropic conductive film adhesive. . On the other hand, on the data line pads 401 and 402, as shown in FIGS. 6 and 9, the output side terminal portions 201d and 202d of the flexible wiring boards for data 201 and 202 are provided with an anisotropic conductive film adhesive. It is electrically connected by thermocompression bonding.

  In this way, as shown in FIG. 6, the power supply flexible wiring board 301 and the data flexible wiring board 201, and the power supply flexible wiring board 302 and the data flexible wiring board 202 are arranged so as to overlap each other. Further, as shown in FIGS. 6 and 9, the input side terminal portions 301b and 302b of the power supply flexible wiring boards 301 and 302 are respectively connected to connectors 125 and 126 provided on one surface 101a of the panel control board 101A. It is inserted and is electrically connected to the panel control circuit 100 (see FIG. 4).

  As shown in FIG. 9, the panel control circuit 100 supplies panel power Q to a plurality of power supply lines 301a and 302a, and drives data (drive) corresponding to the image data of each pixel to the plurality of input-side wirings 201a and 202a. Signal) P is supplied, and a control signal O is output to control signal lines (not shown) of the flexible wiring boards for data 201 and 202.

The two input side terminal portions 201c of the data flexible wiring board 201 are respectively inserted into the connectors 131 and 132 provided on the other surface 101b of the panel control board 101A, so that each input side terminal portion 201c becomes the panel control circuit 100. And electrically connected to each other (see FIG. 7). Also, the two input side terminal portions 202c of the data flexible wiring board 202 are respectively inserted into the connectors 133 and 134 provided on the other surface 101b of the panel control board 101A, so that each input side terminal portion 202c is panel controlled. The circuit 100 is electrically connected (see FIG. 7).

As described above, the input side terminal portions 301b and 302b of the power supply flexible wiring boards 301 and 302 and the input side terminal portions 201c and 20 of the data flexible wiring boards 201 and 202 are provided.
2c is connected to connectors provided on different surfaces 101a and 101b of the panel control board 101A on which the panel control circuit 100 is formed.

  The panel assembly 1 bends the power supply flexible wiring board 301 and the data flexible wiring board 201, and the power supply flexible wiring board 302 and the data flexible wiring board 202 so that one surface 101 a of the panel control board 101 A is sealed with the sealing substrate 12. Can be brought into contact with the surface 12a. In this state, the connectors 125 and 126 as electronic components arranged on the one surface 101a are accommodated in a space 51 formed by the step 50 on the periphery of the organic EL panel 2 (see FIG. 8).

According to 2nd Embodiment comprised as mentioned above, there exist the following effects.
The power supply line pads 501 to 504 of the light emitting element substrate 11 and the panel control circuit 100 are electrically connected through the power supply flexible wiring boards 301 and 302. Further, the data line pads 401 and 402 of the light emitting element substrate 11 and the panel control circuit 100 are electrically connected via the flexible wiring boards for data 201 and 202 that overlap the flexible wiring boards for power supply 301 and 302, respectively. In the panel assembly 1 having such a configuration, the organic EL panel 2 can be thinned.

  The power line pads 501 to 504 and the data line pads 401 and 402 are provided for each block obtained by dividing a plurality of data lines into two blocks. That is, the first block is provided with the data line pad 401 and the two power supply line pads 501 and 502, and the second block is provided with the data line pad 402 and the two power supply line pads 503 and 504, respectively. Thereby, even when a plurality of data lines are divided into a plurality of blocks (two blocks in this example) and driven, the thickness of the organic EL panel 2 can be reduced.

(Third embodiment)
A panel assembly 1 according to a third embodiment will be described with reference to FIG.
In the second embodiment, as shown in FIG. 8, the input-side terminal portions 201c and 202c (see FIG. 9) of the data flexible wiring boards 201 and 202 are inserted into the connectors 131 to 134 of the panel control board 101A from the outside. I have to. On the other hand, in the third embodiment, as shown in FIG. 10, the input side terminal portions 201c and 202c (see FIG. 9) of the flexible wiring boards for data 201 and 202 are connected to the connectors 131 to 134 of the panel control board 101A. Is inserted from the inside. Other configurations are the same as those of the second embodiment.

According to 3rd Embodiment comprised as mentioned above, there exists an effect similar to the said 2nd Embodiment.
(Mobile display module)
Next, an embodiment of a moving body display module configured by using a plurality of panel assemblies described in the above embodiments will be described with reference to FIGS. As an example, the display module 90 of the moving body according to the present embodiment is configured using three panel assemblies 1 (see FIGS. 1 and 2) described in the first embodiment.

As shown in FIGS. 11 and 12, the mobile display module 90 includes three panel assemblies 1. In these three panel assemblies 1, of two adjacent organic EL panels 2, the end portion 11 a (see the enlarged portion in FIG. 12) of the light emitting element substrate 11 of one organic EL panel 2 is the same as the other organic EL panel 2. It arrange | positions so that it may be located in the space formed by the level | step difference 60. The step 60 is a step formed on the periphery of the organic EL panel 2 in the same manner as the step 50 shown in FIG.

  Further, the three panel assemblies 1 are fixed to the base plate 5 as shown in FIGS. 11 and 12. This base plate 5 is attached to the instrument panel 21 of the vehicle 20 shown in FIG. A resin panel cover 80 indicated by a two-dot chain line in FIG. 14 is attached to the surface of the moving display module 90 attached to the instrument panel 21 in this manner. The panel cover 80 includes a speedometer circular opening 81 displayed in the display area 14 of the middle organic EL panel 2 and a tachometer circular opening displayed in the display area 14 of the right organic EL panel 2. A portion 82 and a rectangular opening 83 for an image displayed on the left organic EL panel 2 are provided.

  In the moving body display module 90 thus mounted on the instrument panel 21 of the vehicle 20, for example, as shown in FIG. 14, a speedometer scale 91 that displays the vehicle speed in an analog manner using the organic EL panel 2 in the middle, A number 92 and a pointer 93 are displayed. Further, a tachometer scale 94, numeral 95, and pointer 96 for displaying the engine speed in an analog manner are displayed on the right organic EL panel 2, and an image 97 such as map information of the car navigation device is displayed on the left organic EL panel 2. . The left organic EL panel 2 can also display TV images and DVD device images.

  In the mobile display module 90, as shown in FIG. 13, two light emitting diodes are operated on the upper and left sides of the speedometer displayed on the middle organic EL panel 2 by operating the direction indicator 40 in the vertical direction. Direction indicating parts 41 and 42 in which one of the above blinks are provided. In the direction instruction units 41 and 42, two light emitting diodes blink simultaneously by operating a hazard switch (not shown).

According to the mobile display module configured as described above, the following operational effects can be obtained.
The three panel assemblies 1 are located in a space formed by the step 60 of the other organic EL panel 2 at the end portion 11a of the light emitting element substrate 11 of one organic EL panel 2 of the two adjacent organic EL panels 2. (Refer to FIG. 12). For this reason, the thickness is reduced by the thickness δ of the light emitting element substrate 11 (see FIG. 12), and the moving display module 90 having a small thickness can be realized. Moreover, the non-display areas 15 of the adjacent organic EL panels 2 overlap in a plane, and the display areas 14 of the adjacent organic EL panels 2 approach each other. For this reason, when different images such as a vehicle speedometer, a tachometer, and a map screen of a car navigation device are displayed by the three organic EL panels 2, a display close to a normal meter is possible. That is, the position of the speedometer and the tachometer displayed on the two adjacent organic EL panels 2 can be brought close to the same level as that displayed by a normal meter.

In addition, this invention can also be changed and embodied as follows.
In each of the above embodiments, the flexible wiring board is disposed on one side of the organic EL panel 2 (one side of the light emitting element substrate 11), but the present invention is not limited to such a configuration. For example, in the first embodiment, a plurality of flexible wiring boards similar to the flexible wiring boards 211 and 212 may be arranged on both sides of the organic EL panel 2.

  In the second embodiment, when the power flexible wiring board 301 and the data flexible wiring board 201 that overlap each other are taken as one set, the power flexible wiring board 301 and the data flexible wiring board are provided on both sides of the organic EL panel 2. A plurality of 201 may be arranged.

  In such a configuration, the plurality of data lines are divided into a plurality of blocks, and the left and right panel control boards 101 (connected to the left and right flexible wiring boards arranged on the both sides of the organic EL panel 2 one by one or plural sets, respectively. Alternatively, it is driven by the panel control circuit 100 of 101A). Also in the panel assembly having such a configuration, it is possible to reduce the thickness of the organic EL panel 2 as in the above embodiments. In particular, it is effective for a panel assembly having a configuration in which a plurality of data lines are divided into a number of blocks and driven.

  In each of the above embodiments, the connector provided on the one surface 101a of the panel control board 101, 101A is configured to fit in the space 51 formed by the step 50 on the peripheral edge of the organic EL panel 2, but electronic components other than the connector are included. You may comprise so that it may fit in the space 51. FIG. Also with this configuration, the organic EL panel 2 can be made thinner by the thickness of the electronic component.

In each of the above embodiments, the organic EL panel 2 used for the panel assembly 1 is described as an example of the display panel. However, the display panel used for the fluorescent plasma display using discharge, the display using the electron-emitting device (FED) ) And SED (Surface-Conduction Electron-Emitter Display), the present invention can be applied to the same effects as those of the above-described embodiments.

  In the second embodiment, the data lines are divided into two blocks on the light emitting element substrate 11 of the organic EL panel 2, and one data line pad and two power supply line pads are shown in FIG. 9 for each block. It is arranged. The present invention is not limited to such an arrangement, and can be widely applied to a configuration in which power supply line pads and data line pads are two-dimensionally arranged on the light emitting element substrate 11.

  In the second embodiment, the data line pads 401 and 402 are arranged side by side at the mounting side end of the light emitting element substrate 11, and the power line pads 501 to 504 are data lines as viewed from the mounting side end side. They are arranged behind the pads 401 and 402, respectively. In the present invention, contrary to such an arrangement, the power supply line pads 501 to 504 are arranged at the mounting side end of the light emitting element substrate 11 and the data line pads 401 and 402 are placed behind the power supply line pads 501 to 504. The present invention can also be applied to the arranged configuration. In this case, the four power supply line pads 501 to 504 are arranged in the same manner as in FIG. 9 at the mounting side end of the light emitting element substrate 11.

  In each of the above embodiments, the data line is divided into two blocks and driven by two driver ICs, but the present invention is not limited to such a configuration. The present invention can also be applied to a configuration in which the data line is driven by being divided into a number of blocks other than “2”.

  In each of the above embodiments, the configuration in which the data lines X1 to Xm are divided into a plurality of blocks has been described as an example, but the present invention is also applicable to a configuration in which the data lines X1 to Xm are driven by one data line driving circuit (driver IC). The invention is applicable.

The perspective view which shows the state which the panel assembly which concerns on 1st Embodiment opened. The perspective view which shows the closed state of the panel assembly. AA arrow sectional drawing of FIG. The block diagram which shows the electrical constitution of the panel assembly which concerns on 1st Embodiment. (A) A circuit diagram showing a pixel circuit, (b) a timing chart showing an operation. The perspective view which shows the state which the panel assembly which concerns on 2nd Embodiment opened. The perspective view which shows the closed state of the panel assembly. BB arrow sectional drawing of FIG. The top view which showed partially disassembled and showed the panel assembly which concerns on 2nd Embodiment. Sectional drawing which shows the principal part of the panel assembly which concerns on 3rd Embodiment. The perspective view which shows the display module of a moving body. The side view of the display module. The perspective view which shows the vehicle inside where the display module was mounted. Plan view showing the display state of the display module

Explanation of symbols

  X1 to Xm ... data lines, 1 ... panel assembly, 11a ... end, 12 ... sealing substrate, 50, 60 ... step, 51 ... space, 90 ... display module of moving body, 100 ... panel control circuit, 101, 101A ... Panel control board, 101a, 101b ... surface, 121-124, 125-127, 131-134 ... connector, 128 ... electronic component, 201, 202 ... flexible wiring board for data, 201c, 202c, 301b, 302b ... input side Terminal part, 201d, 202d, 301c, 301d, 302c, 302d ... output side terminal part, 210A ... pixel, 211,212 ... flexible wiring board, 301,302 ... flexible wiring board for power supply, 301a, 302a ... power supply line, 401, 402 ... data line pads, 411, 412 ... connection terminal portions, 50 ～504 ... power line pad.

Claims (8)

A display panel having an element substrate on which a plurality of pixels arranged in a matrix corresponding to the intersection of a plurality of scanning lines and a plurality of data lines is formed, and the pixels are driven based on image data of the pixels In the panel assembly
A panel control board provided with a panel control circuit for controlling the driving of each pixel, an output side terminal part connected to the connection terminal part of the element board, and an input side terminal part connected to the panel control circuit, respectively. And at least one flexible wiring board,
In the state where the flexible wiring board is bent and one surface of the panel control board is brought into contact with the back surface of the display panel, the electronic component disposed on the one surface is formed by a step on the peripheral edge of the display panel. A panel assembly that is structured to fit in a space. The panel assembly according to claim 1,
The flexible wiring board is a composite type flexible wiring board in which a power supply line, a data supply line and a control signal line are formed, and a connector connected to the input side terminal portion of the composite type flexible wiring board, The connector is provided on the one surface of the panel control board, the connector is disposed in the space in a state where the flexible wiring board is bent and the one surface of the panel control board is brought into contact with the back surface of the display panel. A panel assembly characterized in that it fits in the box. The panel assembly according to claim 2.
The panel assembly, wherein the plurality of data lines are divided into a plurality of blocks and driven, and the composite flexible wiring board is provided for each block. The panel assembly according to claim 1,
As the flexible wiring board, there are provided a power supply flexible wiring board on which at least a power supply line is formed, and a data flexible wiring board on which the data supply line is formed, and is disposed so as to overlap the power supply flexible wiring board. And
The output side terminal portion of the power supply flexible wiring board and the output side terminal portion of the data flexible wiring board are provided on the element substrate at positions shifted in a direction perpendicular to the arrangement direction of the data lines. A line pad and a data line pad, respectively, and the input side terminal portion of the power supply flexible wiring board and the input side terminal portion of the data flexible wiring board are connected to the one surface of the panel control board. Each is electrically connected to a connector provided on the other side,
The power supply flexible wiring board and the data flexible wiring board that are overlapped with each other are folded and the one surface of the panel control board is brought into contact with the back surface of the display panel, and the one surface is disposed on the one surface. A panel assembly characterized in that the connector is placed in a space formed by the step. The panel assembly according to claim 4.
The panel assembly, wherein the plurality of data lines are divided into a plurality of blocks and driven, and the flexible wiring board for power supply and the flexible wiring board for data are provided for each block. In the panel assembly as described in any one of Claims 1-5,
A plurality of the flexible wiring boards are arranged on both sides of the display panel,
The panel control boards are respectively connected to the left and right flexible wiring boards arranged on both sides of the display panel.
A panel assembly characterized in that the left and right panel control boards connected to the left and right flexible wiring boards can be brought into contact with the back surface of the display panel by bending the flexible wiring board. In the panel assembly as described in any one of Claims 1-6,
The display panel is an electroluminescence display panel using an electroluminescence element for each pixel, and the electroluminescence display panel includes an element substrate having a plurality of pixels on which the electroluminescence elements are formed, and the plurality of pixels. And a sealing substrate bonded to the element substrate so as to be sealed, wherein the step is a step between the element substrate and the sealing substrate having an outer shape smaller than the element substrate. . In the display module of the movable body provided with a plurality of panel assemblies according to any one of claims 1 to 7,
The plurality of panel assemblies are arranged so that an end portion of the element substrate of one of the two adjacent display panels is positioned in a space formed by the step of the other display panel. A display module for moving objects.

Images