JP2003308028A - Display device, its manufacturing method, and driving circuit element, its mounting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device and its manufacturing method in which the cost is reduced and the scale of the pixels is reduced and to provide a driving circuit element and its manufacturing method. <P>SOLUTION: The display device has light emitting elements which constitute of pixels and driving circuit elements to drive the light emitting elements and a single driving circuit element is commonly used to drive the plurality of the pixels. The driving circuit element respectively has a plurality of input pad electrodes, output pad electrodes and selection pad electrodes corresponding to the plurality of the pixels and the plurality of the output pad electrodes and the plurality of selection pad electrodes are respectively arranged in a rotation symmetry manner. The direction of the driving circuit elements is arbitrary with respect to the plurality of the output pad electrodes and the selection pad electrodes and the elements are mounted. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device and a manufacturing method thereof, a driving circuit element and a mounting method thereof.

[0002]

2. Description of the Related Art An LED (ligh) using a driving circuit element such as a conventional active matrix element (AM element) is used.
In the case of a display device such as a t-emitting diode (display), one for each LIP (LED In Plastic) of red (R), green (G), and blue (B)
There is a type of configuration in which each driving circuit element is used.

In this type of display device, since one circuit element is provided for each LIP, even if a defect occurs in one circuit element, for example, one Only one color is bad,
The other circuit elements operate normally. However, because of the structure in which one circuit element is provided for each LIP, the yield in each manufacturing process and mounting process decreases.

Instead of this type, L for three colors of RGB
In order to drive the IP, there is a type of configuration in which a driving circuit element includes driving circuits for three colors and one pixel is used to drive the driving circuit element.

FIG. 14 is a schematic plan view of a display device such as a flat panel display using a conventional driving circuit element (for example, an AM element). One pixel is driven by one circuit element described above. The type of configuration.

That is, as shown in FIG. 14A, the conventional display device 46 has a red color L on the printed wiring board 2.
IP3, green LIP4, blue LIP5 and their LI
A driving circuit element 47 for driving P is arranged. The unit pixel 6 includes a red LIP3, a green LIP4, and a blue LIP4, and one driving circuit element 47 is arranged for each pixel.

As shown in FIG. 14B, the external connection terminal (hereinafter referred to as a pad electrode), which is one of the factors for determining the size of the driving circuit element 47, has a ground pad electrode 16, as shown in FIG. There are a total of eight selection pad electrodes 15, signal input pad electrodes 9, 10, 11 of each color, and signal output pad electrodes 12, 13, 14 of each color.

[0008]

However, as shown in FIG.
When manufacturing a display as shown in, for example, a display compatible with high-definition broadcasting has about 2 million pixels, so if one driving circuit element made of a semiconductor element is arranged for each pixel, 2 million semiconductors will be produced. It required an element, which led to an increase in manufacturing cost.

In practice, it is difficult to mount an equivalent number of driving circuit elements corresponding to hundreds of thousands to millions of pixels, and even if the circuit configuration is such that one circuit element covers three colors. It is very difficult to increase the yield, which is one of the factors that lower the total yield of the panel.

On the other hand, when the pixel size of the display is reduced, it is necessary to reduce the size of the driving circuit element accordingly. In practice, however, the size is limited due to the physical connection between the circuit element and the LIP. However, it is very difficult to make the circuit element smaller than that.

When a circuit element is patterned on a silicon substrate, cut out into chips, and mounted on a mounting substrate by a self-alignment technique called transfer, for example, when the circuit element is mounted on the front and back sides of the circuit element, As a matter of course, the difference cannot be established unless the circuit elements have an asymmetrical shape above and below. Usually, if patterning is performed on a silicon substrate so that a large number of vertically asymmetrical circuit elements can be produced, a large area is wasted when dicing the silicon substrate, which causes a high cost.

The present invention has been made in order to solve the above-mentioned problems, and the purpose thereof is to reduce the cost and to cope with the reduction of the pixel size. A display device and a manufacturing method thereof, and a driving circuit element and a manufacturing method thereof.

[0013]

That is, the present invention has a light emitting element forming a pixel and a driving circuit element for driving the light emitting element, and one pixel is provided for a plurality of the pixels. The present invention relates to a display device in which the driving circuit element is commonly used (hereinafter, referred to as a first display device of the present invention).

According to the first display device of the present invention,
Since one driving circuit element is commonly used for a plurality of pixels, the number of driving circuit elements can be reduced when compared with the conventional display device with the same number of pixels. Therefore, the manufacturing cost can be reduced,
Further, it becomes possible to improve the mounting yield and the total yield of the panel.

Further, it is possible to adapt to the reduction of the size of the pixel without adversely affecting the physical connection between the driving circuit element and the light emitting element.

Further, since one driving circuit element is commonly used for a plurality of the pixels and it is possible to adapt to the reduction of the pixel size, the area is the same as that of the conventional display device. When compared, the pixel density per unit area is improved, and the performance, image quality, and reliability as a display device can be improved.

The present invention is commonly used for driving a plurality of pixels each including a light emitting element, and a plurality of input pad electrodes, output pad electrodes and selection pad electrodes are provided corresponding to the plurality of pixels. The present invention relates to a driving circuit element having the plurality of output pad electrodes and the plurality of selection pad electrodes arranged in rotational symmetry.

Further, the above-mentioned driving circuit element of the present invention is
The present invention relates to a display device commonly used to drive a plurality of pixels (hereinafter referred to as a second display device of the present invention).

Further, when mounting the driving circuit element of the present invention on a substrate, the driving circuit element is mounted in any orientation with respect to the plurality of output pad electrodes and the plurality of selection pad electrodes. The present invention relates to a method of mounting a driving circuit element for performing the above.

When mounting the driving circuit element of the present invention on a substrate, the driving circuit element is mounted in any orientation with respect to the plurality of output pad electrodes and the plurality of selection pad electrodes. And a method for manufacturing a display device.

According to the second display device of the present invention and the method of manufacturing the same, the driving circuit element of the present invention is commonly used to drive a plurality of the pixels.
When the same number of pixels is compared with the display device in which one driving circuit element is provided for each pixel, the number of driving circuit elements of the present invention can be reduced. Therefore, the manufacturing cost can be suppressed, and the mounting yield and the total yield of the panel can be improved.

Further, it is possible to adapt to the reduction of the size of the pixel without adversely affecting the physical connection between the driving circuit element of the present invention and the light emitting element.

Further, one driving circuit element of the present invention is commonly used for a plurality of the pixels, and it is possible to adapt to the reduction of the pixel size, which is the same as the conventional display device. When compared by area, the pixel density per unit area is improved, and the performance as a display device,
It is possible to improve image quality and reliability.

Further, according to the driving circuit element and the mounting method thereof of the present invention, a plurality of the input pad electrodes, the output pad electrodes, and the selection pad electrodes are provided corresponding to the plurality of pixels, respectively. Since the plurality of output pad electrodes and the plurality of selection pad electrodes are arranged so as to have rotational symmetry, the shape of the element can be vertically changed like a conventional driving circuit element. It is possible to use a self-alignment technique such as a transfer at the time of mounting without using asymmetry. For example, when mounting, even when the driving circuit element of the present invention is mounted upside down, the plurality of output pad electrodes and the plurality of selection pad electrodes are rotationally symmetrical. Since it is placed, it can operate normally.

Further, since the driving circuit element of the present invention does not need to be vertically asymmetrical, the substrate is wasted when the driving circuit element is patterned on a substrate such as silicon and diced. The area can be reduced, the cost can be reduced, and the members can be effectively used.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION In a first display device according to the present invention, the first pixel of the first stage and the second pixel of the second stage are the driving circuit elements common to these pixels. It is preferable to be arranged on both sides in the short side direction.

A plurality of the pixels are arranged along the long side of the driving circuit element, and one pixel is shared by the pixels.
One of the driving circuit elements may be used, or a plurality of the pixels may be arranged along each of a pair of long sides of the driving circuit element, and one of the driving circuits may be commonly used for these pixels. A circuit element for use may be used.

Further, the driving circuit element common to a plurality of the pixels is laminated on the mounting substrate on which the light emitting element constituting the pixel is mounted, in a state of being electrically connected. It may have a structure.

The driving circuit element has red, green, and blue input pad electrodes, red, green, and blue output pad electrodes, a ground pad electrode, and a selection pad electrode. It is preferable.

According to the first display device of the present invention, one driving circuit element is commonly used for a plurality of pixels, such as two pixels.
When compared with the conventional display device with the same number of pixels, the number of drive circuit elements can be reduced. Therefore,
The manufacturing cost can be suppressed, and the mounting yield and the total panel yield can be improved.

Further, it is possible to adapt to the reduction of the size of the pixel without adversely affecting the physical connection between the driving circuit element and the light emitting element.

Further, since one driving circuit element is commonly used for a plurality of the pixels and it is possible to adapt to the reduction of the pixel size, the area is the same as that of the conventional display device. When compared, the pixel density per unit area is improved, and the performance, image quality, and reliability as a display device can be improved.

On the other hand, the driving circuit element according to the present invention is
It is preferable that the plurality of output pad electrodes and the plurality of selection pad electrodes are arranged to be 180 ° rotationally symmetrical.

Also, red, green, and blue input pad electrodes,
It is preferable to have a pad electrode including a red, green, and blue output pad electrode, a ground pad electrode, and a selection pad electrode. For example, a driving circuit element according to the present invention has two pixels. When commonly used for driving, the red, green, and blue input pad electrodes, each of the red, green, and blue output pad electrodes, the common ground pad electrode, and the two It is desirable to have twelve pad electrodes consisting of the selection pad electrode and the output pad electrode and the selection pad electrode so as to be 180 ° rotationally symmetrical.

According to the driving circuit element of the present invention,
Since the output pad electrode and the selection pad electrode are arranged so as to have rotational symmetry such as 180 ° rotational symmetry, the element shape does not have to be vertically asymmetrical as in the conventional drive circuit element. Also, a self-alignment technique such as transfer can be used at the time of mounting. For example, when mounting, even if the driving circuit element according to the present invention is mounted upside down, the output pad electrode and the selection pad electrode are arranged so as to be rotationally symmetrical, respectively. , Can work normally.

Further, since the driving circuit element according to the present invention does not need to have a vertically asymmetrical shape, when the driving circuit element is patterned on a substrate such as silicon and dicing is performed, the substrate is wasted. Area can be reduced, cost can be reduced, and members can be effectively used.

The second display device according to the present invention preferably has the above-mentioned driving circuit element according to the present invention.

According to the second display device of the present invention, since the above-mentioned driving circuit element of the present invention is commonly used to drive a plurality of the pixels, one pixel of the related art is used. When the number of pixels is the same as that of a display device provided with driving circuit elements one by one, the number of driving circuit elements according to the present invention can be reduced. Therefore, the manufacturing cost can be suppressed, and the mounting yield and the total yield of the panel can be improved.

Further, without adversely affecting the physical connection between the driving circuit element according to the present invention and the light emitting element,
The size of the pixel can be reduced.

Further, since one driving circuit element according to the present invention is commonly used for a plurality of the pixels and the pixel size can be reduced,
When compared with the conventional display device in the same area, the pixel density per unit area is improved, and the performance, image quality, and reliability as a display device can be improved.

A display device and a driving circuit element according to the present invention will be described below with reference to the drawings. In addition,
The display devices shown in the following first to fourth embodiments are specific examples of the first display device based on the present invention, and the display device shown in the following fifth embodiment is It is a specific example of the 2nd display device based on invention, and the drive circuit element based on this invention.

Embodiment 1 FIG. 1 is a schematic plan view of a display device in which the first pixel and the second pixel are arranged on both sides in the short side direction of the driving circuit element common to these pixels. It is a figure. That is,
In this example, one driving circuit element is commonly used for two pixels.

As shown in FIG. 1, this display device 1
On the printed wiring board 2, red LIP3, green LI
Unit pixels 6 made of P4 and blue LIP5 are regularly formed in a matrix as a whole, and one driving circuit element 7A is arranged for two pixels 6.

The drive circuit element 7A in this case is
As shown in the schematic plan view of FIG. 2, a red input pad electrode 9, a green input pad electrode 10, a blue input pad electrode 11, a red output pad electrode 12, a green color are provided on a substrate 8 made of silicon or the like. An output pad electrode 13, a blue output pad electrode 14, a selection pad electrode 15, and a ground pad electrode 16 are formed. The red output pad electrode 12, the green output pad electrode 13, and the blue output pad electrode 14 are arranged on both sides of the driving circuit element 7A in the short side direction, and correspond to the upper and lower pixels 6, respectively. In order to do so, two are formed for each color. In addition, the ground pad electrode 15 is also 2 in order to correspond to the upper and lower pixels 6 in the same manner as the output pad electrode.
Individually formed. Therefore, the total number of pad electrodes of the drive circuit element 7A in this case is 12.

Here, as shown in FIG. 14A, since the conventional display device 46 uses one driving circuit element 47 for each pixel 6, it drives, for example, two pixels. In order to do so, two driving circuit elements 47 having a total of eight pad electrodes as shown in FIG. 14B must be arranged as they are, and the total number of pad electrodes becomes 16, and the circuit elements 47 are The ratio of the occupied area was very large (see part B of FIG. 14A).

On the other hand, in the display device 1 of the first embodiment, one driving circuit element 7A is commonly used for two pixels 6, and as described above, the pad electrode of Of these, the grounding pad electrode 16 and the input pad electrodes 9, 10 and 11 of each color, which are four in total, can be shared by the upper and lower LIPs of the driving circuit element 7A, so that two pixels are provided. The total number of pad electrodes required to drive the device is 12. Therefore, as compared with the conventional display device 46, the ratio of the area occupied by the driving circuit element 7A can be reduced. Further, since the number of pad electrodes can be reduced as compared with the conventional one, it is possible to prevent an increase in the defective rate of conduction failure of the pad electrodes.

Red LIP3, green LIP4 and blue LI
A schematic diagram of P5 is shown in FIG. It should be noted that FIG.
It is an outline top view of P3, 4 or 5, and Drawing 3 (b) is the partial outline sectional view.

As shown in FIG. 3, LIP 3, 4 or 5
On the printed wiring board 2, an electronic component 17 including a light emitting (semiconductor) element 18 corresponding to each color, an external terminal 20 connected to the light emitting element 18 with a lead wire 19, and a mold resin 21 is arranged. The electronic component 17 is further covered with the molding material 23, and the LIP 3, 4 or 5 is used.
And pad electrodes 24a and 24b for electrically connecting the drive circuit element 7A and the like.

FIG. 4 is a schematic plan view showing the connection state of the portion A of the display device 1 shown in FIG. The driving circuit element 7A shown in FIG. 2 was used, and each LIP shown in FIG. 3 was used.

That is, the first pixel 6a and the second pixel 6b are
The driving circuit elements 7A common to the pixels 6a and 6b are arranged on both sides in the short side direction. The first pixel 6a arranged in the upper row 22 includes red (R ¹ ) LIP3a and green (G ¹ ) L.
The second pixel 6b composed of the IP4a and the blue (B ¹ ) LIP5a and arranged in the lower stage 25 is the red (R ² ) LIP3.
b, green (G ² ) LIP4b and blue (B ² ) LIP5b.

The driving circuit element 7A includes red input pad electrodes 9, green input pad electrodes 10, blue input pad electrodes 11, and red output pad electrodes 12a and 12a.
b, green output pad electrodes 13a and 13b, blue output pad electrodes 14a and 14b, and selection pad electrode 15
12 consisting of a and 15b and a ground pad electrode 16
It has individual pad electrodes.

Then, each LIP of the upper stage 22 and the lower stage 25
P-side pad electrode 24a is commonly connected to Vcc 26, and the n-side pad electrode 24b of each LIP in the upper stage 22 and the lower stage 25 is an output pad electrode 12 corresponding to each color of the driving circuit element 7A. It is electrically connected to 13 and 14 by a metal wiring 27.

The input pad electrodes 9, 10 and 11 for each color of the driving circuit element 7A are respectively connected to the red signal line 2
8, the green signal line 29 and the blue signal line 30 are connected.

Further, the selection pad electrodes 15a and 15b corresponding to the upper stage 22 and the lower stage 25 are connected to the upper stage selector 31a and the lower stage selector 31b, respectively.
The ground pad electrode 16 is connected to the GND line 32.

In this mechanism, taking the light emission of the R ¹ LIP 3a as an example, first, a signal is input from the red signal line 28 to the red input pad electrode 9, and at the same time, from the upper selector 31a to the upper selection pad electrode 15a. A voltage is applied, which selects R ¹ LIP3a. Although not shown, the red input pad electrode 9 and the upper output pad electrode 12a are electrically connected to each other.
Of the R signal connected to the output pad electrode 12a after the signal is sent to the output pad electrode 12a.
N-side pad electrode 24b of the ¹ LIP3a is receiving said signal, R ¹ LIP3a emits light.

According to the display device 1 of the first embodiment, one for a plurality of pixels 6, for example, two pixels.
Since one drive circuit element 7A is used in common, the number of drive circuit elements 7A can be reduced when compared with the conventional display device 46 with the same number of pixels. Therefore,
The manufacturing cost can be reduced, and the yield in each process such as the mounting process, the wiring process, and the device manufacturing process can be improved.

Further, the driving circuit element 7A and the LIPs 3, 4
Alternatively, the size of the pixel 6 can be reduced without adversely affecting the physical connection with the pixel 5.

Further, for example, one driving circuit element 7A is commonly used for two pixels 6 and the size of the pixel 6 can be reduced, so that the conventional display device 46 can be used. When compared in the same area, the pixel density per unit area is improved, and the performance as a display device, image quality, and reliability can be improved.

Embodiment 2 FIG. 5 shows a display in which a plurality of the pixels are arranged along the long side of the driving circuit element and one driving circuit element is commonly used for these pixels. It is a partial (three-pixel) schematic plan view showing the connection state of the device for use.

That is, although not shown in the drawing, this display device has the unit pixels composed of the red LIP, the green LIP and the blue LIP, which are regularly formed in a matrix on a printed wiring board. As shown in FIG. 5, one driving circuit element 7B is arranged for every three pixels 6. In addition, the first pixel 6a is R
¹ (red) LIP3a, G ¹ (green) LIP4a and B
¹ (blue) LIP 5a, the second pixel 6b is R
² (red) LIP3b, G ² (green) LIP4b and B
² (blue) LIP5b, the third pixel 6c is R
³ (red) LIP3c, G ³ (green) LIP4c and B
³ (blue) It consists of LIP5c.

The driving circuit element 7B in this case is
As shown in the schematic plan view of FIG. 6, red input pad electrodes 9a, 9b and 9 are provided on a substrate 8 made of silicon or the like.
c, and green input pad electrodes 10a, 10b and 10c
And blue input pad electrodes 11a, 11b and 11c
And red output pad electrodes 33a, 33b and 33c
And green output pad electrodes 34a, 34b and 35c
And blue output pad electrodes 35a, 35b and 35c
, A selection pad electrode 15 and a ground pad electrode 16 are formed.

Each LIP 3a, 3b, 3c, 4a, 4b,
As 4c, 5a, 5b and 5c, those shown in FIG. 3 were used.

The p-side pad electrode 24a of each LIP forming the first pixel 6a, the second pixel 6b and the third pixel 6c is commonly connected to Vcc 26, and the n-side pad electrode 24 is also provided.
b is electrically connected to the output pad electrode corresponding to each color of the driving circuit element 7B by a metal wiring 27. Input pad electrodes 9a, 9b, 9c, 10a, 10b, 10 for each color of the driving circuit element 7B
c, 11a, 11b and 11c are red signal lines 2 respectively
8a, 28b, 28c, green signal lines 29a, 29b, 2
9c and the blue signal lines 30a, 30b, 30c. The selection pad electrode 15 is connected to the selector 31, and the ground pad electrode 16 is connected to the GND line 32.

In the display device of the second embodiment, since one driving circuit element 7B is commonly used for three pixels 6, the same as in the first embodiment or the same as that of the first embodiment. The above effects are obtained.

Embodiment 3 In FIG. 7, a plurality of the pixels are arranged along each of a pair of long sides of the driving circuit element, and one driving circuit element is commonly used for these pixels. It is a partial (4 pixel part) schematic plan view which shows the connection state of the display device formed in this way.

That is, although not shown in the drawing, this display device has the unit pixels composed of the red LIP, the green LIP, and the blue LIP formed on a printed wiring board in a regular matrix. As shown in FIG. 7, one driving circuit element 7C is arranged for every four pixels 6. In addition, the first pixel 6a is R
¹ (red) LIP3a, G ¹ (green) LIP4a and B
¹ (blue) LIP 5a, the second pixel 6b is R
² (red) LIP3b, G ² (green) LIP4b and B
² (blue) LIP 5b, and these first pixel 6a and second pixel 6b are arranged in the upper stage 22 of the driving circuit element 7C. Further, the third pixel 6c has an R ³ (red) LI
P3c, G ³ (green) LIP4c and B ³ (blue) LIP5c
And the fourth pixel 6d is R ⁴ (red) LIP 3d, G ⁴
(Green) consists of LIP4d and B ⁴ (blue) LIP5d,
The third pixel 6c and the fourth pixel 6d are arranged in the lower stage 25 of the driving circuit element 7C.

The drive circuit element 7C in this case is
As shown in the schematic plan view of FIG. 8, on the substrate 8 made of silicon or the like, the red input pad electrode 36a commonly used for the R ¹ LIP3a and the R ³ LIP3c and the R ² LIP3b are used.
And R ⁴ LIP3d commonly use the red input pad electrode 36b, G ¹ LIP4a and G ³ LIP4c commonly use the green input pad electrode 37a, G ² LIP4b and G ⁴
Green input pad electrode 37b commonly used in LIP4d
When, B ¹ and the blue input pad electrode 38a used in common in LIP5a and B ³ LIP5c, B ² LIP5b and B ⁴ LIP
The blue input pad electrode 38b and the red output pad electrodes 33a, 33b, 33c and 33d which are commonly used in 5d.
, Green output pad electrodes 34a, 34b, 34c and 34d, and blue output pad electrodes 35a, 35b, 35
c and 35d, selection pad electrodes 15a and 15b corresponding to the upper stage 22 and the lower stage 25, and a grounding pad electrode 16 are formed.

Each LIP 3a, 3b, 3c, 3d, 4a,
As 4b, 4c, 4d, 5a, 5b, 5c and 5d, those shown in FIG. 3 were used.

The p-side pad electrodes 24a of the LIPs of the upper stage 22 and the lower stage 25 are commonly connected to Vcc 26a and 26b, and the n-side pad electrodes 24b of the LIPs of the upper stage 22 and the lower stage 25 are the driving circuit elements 7C. Output pad electrodes 33a, 33b, 33c, 3 corresponding to respective colors of
3d, 34a, 34b, 34c, 34d and 35a, 3
5b, 35c and 35d are electrically connected to each other by a metal wiring 27. The red input pad electrode 36a is R
^The red input pad electrode 36b is connected to the signal line 28a corresponding to ¹ and R ³ , and the red input pad electrode 36b corresponds to the signal line 2 corresponding to R ² and R ^4.
8b is connected. In addition, the green input pad electrode 3
7a is connected to the signal line 29a corresponding to G ¹ and G ³ , and the green input pad electrode 37b is connected to the signal line 29b corresponding to G ² and G ⁴ . Furthermore, the blue input pad electrode 38a, the signal line 3 corresponding to B ¹ and B ³
0a and the blue input pad electrode 38b is connected to B ²
And it is connected to the signal line 30b corresponding to the B ^4. Selection pad electrode 15a corresponding to the upper stage 22 and the lower stage 25
And 15b are respectively connected to the upper selector 31a and the lower selector 31b, and the ground pad electrode 16 is connected to the GND line 32.

In the display device according to the third embodiment, one driving circuit element 7C is commonly used for four pixels 6, so that the display device is the same as or similar to the first embodiment. The above effects are obtained.

Embodiment 4 FIGS. 9 to 11 show that the driving circuit elements common to a plurality of the pixels are electrically mounted on a mounting substrate on which the light emitting elements constituting the pixels are mounted. FIG. 6 is a schematic view of a display device having a structure in which the display device is stacked in a state of being connected to the. FIG. 9 shows a display device according to the fourth embodiment
It is a schematic plan view of the mounting substrate 2 side on which the LIPs for two pixels are arranged. FIG. 10 is a schematic plan view of a driving circuit element 7D that can commonly drive 12 pixels according to the display device of the fourth embodiment. FIG. 11 is a schematic partial cross-sectional view in a state where the mounting board 2 and the driving circuit element 7D are stacked.

As shown in FIG. 9, 1 is mounted on the mounting substrate 2 side.
The LIPs for each color of two pixels are arranged, the p-side pad electrode of each LIP arranged in the first stage is connected to a common Vcc 26a, and the p-side pad electrode of each LIP arranged in the second stage is connected. The side pad electrode is connected to the common Vcc 26b, and the p-side pad electrode of each LIP arranged in the third stage is connected to the common Vcc 26c. A wiring 27 is routed from the n-side pad electrode of each LIP to the central portion of the mounting substrate 2.

The driving circuit element 7D in this case is
As shown in the schematic plan view of FIG. 10, 60 pad electrodes are formed on a substrate 8 made of silicon or the like.

That is, the input pad electrode is in the first column.
Red LIP (R in Fig. 9¹, R^FiveAnd R ⁹) Corresponding to red
The input pad electrode 39a and the red LIP in the second row (see FIG. 9)
Medium R², R⁶And R^Ten) Compatible red input pad electrode
39b and the red LIP in the third row (R in FIG. 9³, R⁷And R
¹¹) Corresponding to the red input pad electrode 39c and the fourth column
Red LIP (R in Fig. 9^Four, R⁸And R¹²) Corresponding to red
The color input pad electrode 39d and the green LIP in the first column (Fig.
9 out of G¹, G^FiveAnd G⁹) Green input pad
The pole 40a and the second row green LIP (G in FIG. 9)², G⁶as well as
G^Ten) Corresponding to the green input pad electrode 40b and three columns
Eye green LIP (G in Fig. 9³, G⁷And G ¹¹)
Green input pad electrode 40c and green LIP in the fourth row
(G in Fig. 9 ^Four, G⁸And G¹²) Corresponding to the green input
Electrode 40d and the blue LIP in the first column (B in FIG. 9)¹, B^Five
And B⁹) Corresponding to the blue input pad electrode 41a,
Second row blue LIP (B in FIG. 9)², B⁶And B^Ten)
The blue input pad electrode 41b and the blue LI in the third column
P (B in FIG. 9³, B⁷And B¹¹) Corresponding to the blue input
Head electrode 41c and the blue LIP in the fourth column (B in FIG. 9).^Four,
B⁸And B¹²) Blue input pad electrode 41d corresponding to
Consists of.

Regarding the output pad electrode, 36 pad electrodes corresponding to the LIPs for 12 pixels shown in FIG. 9 are formed, and the beam lead 44 is drawn from each pad electrode.

The selection pad electrodes are the LIPs (R ¹ , G ¹ , B in FIG. 9) arranged in the first row and the first row of the second row.
Selection pad electrode 42 corresponding to ¹ , R ² , G ² and B ² )
a and each LIP arranged in the second row of the first and second rows
(Selection pad electrodes 42b corresponding to R ⁵ , G ⁵ , B ⁵ , R ⁶ , G ⁶ and B ^{6 in} FIG. 9) and LIPs (three rows) arranged in the third row of the first and second rows. In FIG. 9, R ⁹ , G ⁹ , B ⁹ , R ¹⁰ ,
And the pad electrode 42c for selection corresponding to G ¹⁰ and B ^10),
Each LIP arranged in the first row of the third and fourth rows (see FIG. 9).
Medium R ^3, G ^3, B ^3, R ^4, G ⁴ and B ⁴ for selection pad electrode 42d corresponding to) each LIP (in FIG. 9, which is arranged in the second row of the third and fourth columns ^{R 7, G 7, B 7} , R 8, G 8 and the selection pad electrode 42e corresponding to B ^8), the LIP (in FIG 9 R disposed in the third row of the third and fourth columns ¹¹ ,
G ¹¹ , B ¹¹ , R ¹² , G ¹² and B ¹² ) corresponding to the selection pad electrode 42f.

The grounding pad electrodes are the LIPs (R ¹ , G ¹ , B in FIG. 9) arranged in the first row and the first row of the second row.
Grounding pad electrode 16 corresponding to ¹ , R ² , G ² and B ² )
a and each LIP arranged in the second row of the first and second rows
(R ⁵ , G ⁵ , B ⁵ , R ⁶ , G ⁶ and B ^{6 in} FIG. 9) corresponding to the ground pad electrode 16b and each LIP (third row) arranged in the first row and the third row of the second row. In FIG. 9, R ⁹ , G ⁹ , B ⁹ , R ¹⁰ ,
A grounding pad electrode 16c corresponding to G ¹⁰ and B ^10),
Each LIP arranged in the first row of the third and fourth rows (see FIG. 9).
Medium R ^3, G ^3, B ^3, R ^4, G ⁴ and B ⁴ and the ground pad electrode 16d corresponding to) each LIP (in FIG. 9, which is arranged in the second row of the third and fourth columns The ground pad electrodes 16e corresponding to R ⁷ , G ⁷ , B ⁷ , R ⁸ , G ⁸ and B ⁸ ) and the LIPs (R in FIG. 9) arranged in the third row of the third and fourth rows. ¹¹ ,
G ¹¹ , B ¹¹ , R ¹² , G ¹² and B ¹² ) corresponding to the ground pad electrode 16f.

The beam lead 44 is drawn from the selection pad electrode and the ground pad electrode.

In the laminating method, for example, as shown in FIG. 11, the driving circuit element 7D is laminated on the mounting substrate 2 having the LIP 3, 4 or 5 with the pad electrode 43 facing down. At this time, each pad electrode 43 on the driving circuit element 7D side and the pad electrode 24 on the LIP 3, 4 or 5 side
And can be electrically connected using solder or the like.
Then, the beam lead 44 drawn from the pad electrode 43 on the driving circuit element 7D side and the electrode 45 on the LIP 3, 4 or 5 side may be appropriately connected.

In the display device according to the fourth embodiment, one driving circuit element 7D is commonly used for, for example, the twelve pixels, so that the same as in the first embodiment, or A more excellent effect can be obtained.

Fifth Embodiment FIG. 12 is a schematic plan view of a driving circuit element according to the present invention, and FIG. 13 is a partial schematic view showing a connection state of a second display device according to the present invention. It is a top view.

The driving circuit element 7E according to the present invention is used for driving a plurality of the pixels each including a light emitting element. For example, a case where the driving circuit element 7E is commonly used for driving the two pixels is shown in FIG. First, on the substrate 8 made of silicon or the like, the red input pad electrode 9, the green input pad electrode 10, the blue input pad electrode 11, the red output pad electrode 12, and the green output pad electrode 13 are provided. The blue output pad electrode 14, the selection pad electrode 15, and the ground pad electrode 16 are formed. The red output pad electrode 12, the green output pad electrode 13, and the blue output pad electrode 14 are arranged on both sides in the short side direction of the driving circuit element 7E, and correspond to the pixels in the upper row and the lower row, respectively. In order to do so, two are formed for each color. Also, two ground pad electrodes 15 are formed in the same manner as the output pad electrodes so as to correspond to the upper and lower pixels. Therefore, in this case, the number of pad electrodes of the driving circuit element 7E is 12 in total, and the output pad electrodes and the selection pad electrodes are arranged so as to be, for example, 180 ° rotationally symmetrical.

Since the drive circuit element 7E is arranged such that the output pad electrode and the selection pad electrode are 180 ° rotationally symmetrical, the shape of the element is the same as the conventional drive circuit element. It is possible to use a self-alignment technique such as transfer at the time of mounting, without making the top and bottom asymmetric. For example, when mounting, even when the driving circuit element 7E is mounted upside down, the output pad electrode and the selection pad electrode are arranged so as to be rotationally symmetric, respectively. Can work.

Since the driving circuit element 7E does not need to be vertically asymmetrical, the substrate 8 is wasted when the driving circuit element 7E is patterned on the substrate 8 made of silicon or the like and dicing is performed. The area can be reduced, the cost can be reduced, and the members can be effectively used.

Further, since the number of pad electrodes can be reduced as compared with the conventional one, it is possible to prevent an increase in the defective rate of the defective conduction of the pad electrodes.

In the display device of the fifth embodiment, the drive circuit element 7E is mounted on the substrate 2, and the drive circuit element 7E is commonly used to drive the plurality of pixels 6. .

The mounting method of the drive circuit element 7E is such that, when the drive circuit element 7E is mounted on the substrate 2, the drive circuit element 7E is related to the plurality of output pad electrodes and the plurality of selection pad electrodes. Implementation is performed by setting the direction of to arbitrary.

As shown in FIG. 13, the connection state of the display device according to the fifth embodiment is as shown in FIG.
The p-side pad electrode 24a of the IP has the GND line 32 in common.
And the grounding pad electrode 16 of the driving circuit element 7E and the metal wiring 27. The n-side pad electrode 24b of each LIP in the upper stage 22 and the lower stage 25
Are electrically connected to the output pad electrodes 12, 13 and 14 corresponding to the respective colors of the driving circuit element 7E by the metal wiring 27.

The input pad electrodes 9, 10 and 11 for each color of the driving circuit element 7E are respectively connected to the red signal line 2
8, the green signal line 29 and the blue signal line 30 are connected.

Further, the selection pad electrodes 15a and 15b corresponding to the upper stage 22 and the lower stage 25 are connected to the upper stage selector 31a and the lower stage selector 31b, respectively.

According to the display device of the fifth embodiment,
Since the driving circuit element 7E according to the present invention described above is commonly used to drive a plurality of pixels 6 such as twelve, the conventional display device is provided with one driving circuit element per pixel. When compared with the same number of pixels, the number of drive circuit elements 7E arranged on the substrate 2 can be reduced. Therefore, the manufacturing cost can be reduced, and the yield in each process such as the mounting process, the wiring process, the element manufacturing process, etc. can be improved.

Also, the driving circuit element 7E according to the present invention.
Can be adapted to the reduction of the size of the pixel 6 without adversely affecting the physical connection between the LIP3, LIP3, 4 and 5.

Further, since one driving circuit element 7E is commonly used for a plurality of pixels 6 such as twelve, and the size of the pixel 6 can be reduced,
When compared with the conventional display device in the same area, the pixel density per unit area is improved, and the performance, image quality, and reliability as a display device can be improved.

Although the present invention has been described above with reference to the embodiments, the above-described examples can be variously modified based on the technical idea of the present invention.

For example, although the pixels are arranged linearly in the above-described embodiments, they may be arranged two-dimensionally in a pattern. In this case, the present invention in the second display device based on the present invention can be applied. The pad electrode of the drive circuit element based on the above is not limited to 180 ° rotational symmetry, and the degree of rotational symmetry can be appropriately selected.

The light emitting system of the display device according to the present invention is not particularly limited, and liquid crystal, EL (electroluminescence), F
ED (field emission display), PDP, LED (li
ght-emitting diode).

Further, the driving method, form, structure and material of the display device and the driving circuit element according to the present invention, the driving mechanism, the driving circuit, the configuration of the control circuit and the like are within the scope of the invention. It goes without saying that it can be selected as appropriate.

[0098]

According to the first display device of the present invention, since one driving circuit element is commonly used for a plurality of pixels, the number of pixels is the same as that of the conventional display device. When compared, the number of driving circuit elements can be reduced. Therefore, the manufacturing cost can be suppressed, and the mounting yield and the total yield of the panel can be improved.

Further, the size of the pixel can be reduced without adversely affecting the physical connection between the drive circuit element and the light emitting element.

Further, since one driving circuit element is commonly used for a plurality of pixels and it is possible to adapt to the reduction of the pixel size, the area is the same as that of the conventional display device. When compared, the pixel density per unit area is improved, and the performance, image quality, and reliability as a display device can be improved.

According to the second display device of the present invention and the method of manufacturing the same, the driving circuit element of the present invention is commonly used to drive a plurality of the pixels.
When the same number of pixels is compared with the display device in which one driving circuit element is provided for each pixel, the number of driving circuit elements of the present invention can be reduced. Therefore, the manufacturing cost can be suppressed, and the mounting yield and the total yield of the panel can be improved.

Further, it is possible to adapt to the reduction in size of the pixel without adversely affecting the physical connection between the driving circuit element of the present invention and the light emitting element.

Further, since one driving circuit element of the present invention is commonly used for a plurality of the pixels and it can be adapted to the reduction of the pixel size, it is the same as the conventional display device. When compared by area, the pixel density per unit area is improved, and the performance as a display device,
It is possible to improve image quality and reliability.

According to the driving circuit element and the mounting method thereof of the present invention, a plurality of the input pad electrodes, the output pad electrodes, and the selection pad electrodes are provided corresponding to the plurality of pixels. Since the plurality of output pad electrodes and the plurality of selection pad electrodes are arranged so as to have rotational symmetry, the shape of the element can be vertically changed like a conventional driving circuit element. It is possible to use a self-alignment technique such as a transfer at the time of mounting without using asymmetry. For example, when mounting, even when the driving circuit element of the present invention is mounted upside down, the plurality of output pad electrodes and the plurality of selection pad electrodes are rotationally symmetrical. Since it is placed, it can operate normally.

Further, since the driving circuit element of the present invention does not have to be vertically asymmetrical, the substrate is wasted when the driving circuit element is patterned on a substrate made of silicon or the like and is diced. The area can be reduced, the cost can be reduced, and the members can be effectively used.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a display device according to a first embodiment.

FIG. 2 is a schematic plan view of the drive circuit element.

FIG. 3 is the same as LIP (LED In Plastic)
FIG.

FIG. 4 is a partial schematic plan view showing a connected state of the display device.

FIG. 5 is a partial (three pixel) schematic plan view showing a wire connection state of a display device according to a second embodiment.

FIG. 6 is a schematic plan view of the drive circuit element.

FIG. 7 is a partial (four pixels) schematic plan view showing a connection state of a display device according to a third embodiment.

FIG. 8 is a schematic plan view of the driving circuit element.

FIG. 9 is a schematic plan view of the mounting substrate side on which the LIP of the display device according to the fourth embodiment is arranged.

FIG. 10 is a schematic plan view of a drive circuit element that can drive 12 pixels in common.

FIG. 11 is a schematic partial cross-sectional view showing a state where the mounting substrate and the driving circuit element are stacked.

FIG. 12 is a schematic plan view of a driving circuit element according to a fifth embodiment of the present invention.

FIG. 13 is a partial schematic plan view showing the wire connection state of the display device.

FIG. 14 is a schematic plan view of a display device using a driving circuit element according to a conventional example.

[Explanation of symbols]

1 ... Display device, 2 ... Printed wiring board, 3 ... Red LIP (LED In Plastic), 4 ... Green L
IP, 5 ... Blue LIP, 6 ... Unit pixel, 7 ... Driving circuit element, 8 ... Silicon substrate, 9, 36, 39 ... Red input pad electrode, 10, 37, 40 ... Green input pad electrode, 11, 38, 41 ... Blue input pad electrode, 12,
33 ... Red output pad electrode, 13, 34 ... Green output pad electrode, 14, 35 ... Blue output pad electrode, 15
... Pad electrode for selection, 16 ... Pad electrode for grounding, 17 ...
Electronic parts, 18 ... Light emitting (semiconductor) element, 22 ... Upper stage, 2
4 ... Pad electrode, 25 ... Lower stage, 26 ... Vcc, 27 ... Metal wiring, 28 ... Red signal line, 29 ... Green signal line, 30
... Blue signal line, 31 ... Selector, 32 ... GND line, 4
4 ... Beam lead

Continued front page    F-term (reference) 5C094 AA05 AA08 AA15 AA31 AA42                       AA43 AA44 AA48 BA12 BA23                       CA19 CA24 DA09 DA12 DB01                       DB03 FA01 JA09                 5F041 DC07 DC23 DC84 FF06                 5G435 AA04 AA17 AA18 BB04 CC09                       CC12 EE32 EE41 KK05 KK09

Claims (16)

[Claims] 1. A light emitting element forming a pixel and a driving circuit element for driving the light emitting element, wherein one driving circuit element is commonly used for a plurality of the pixels. Is a display device. 2. A first pixel in the first row and a second pixel in the second row
The display device according to claim 1, wherein the pixels are arranged on both sides in the short side direction of the driving circuit element common to the pixels. 3. The driving circuit element according to claim 1, wherein a plurality of the pixels are arranged along a long side of the driving circuit element, and one driving circuit element is commonly used for these pixels. Display device. 4. The driving circuit element according to claim 1, wherein the plurality of pixels are arranged along each of a pair of long sides of the driving circuit element, and one driving circuit element is commonly used for these pixels. Display device described. 5. The driving circuit element includes red, green, and blue input pad electrodes, and red, green, and blue output pad electrodes.
The display device according to claim 1, comprising a ground pad electrode and a selection pad electrode. 6. The driving circuit element common to a plurality of the pixels is laminated on a mounting substrate on which the light emitting element forming the pixel is mounted, in a state of being electrically connected. The display device according to claim 1, which has a structure. 7. A plurality of input pad electrodes, output pad electrodes, and selection pad electrodes, which are commonly used for driving a plurality of pixels each including a light emitting element, are provided corresponding to the plurality of pixels. And a driving circuit element in which the plurality of output pad electrodes and the plurality of selection pad electrodes are arranged in rotational symmetry. 8. The driving circuit element according to claim 7, wherein the plurality of output pad electrodes and the plurality of selection pad electrodes are arranged so as to be rotationally symmetrical by 180 °. 9. Red, green and blue input pad electrodes and red,
The driving circuit element according to claim 7, further comprising a pad electrode composed of green and blue output pad electrodes, a ground pad electrode, and a selection pad electrode. 10. Red, green, and blue input pad electrodes,
1 consisting of two output pad electrodes for each of red, green, and blue, a common ground pad electrode, and two selection pad electrodes
The driving circuit element according to claim 9, which has two pad electrodes. 11. A display device in which the drive circuit element according to claim 7 is commonly used to drive a plurality of pixels. 12. The display device according to claim 11, comprising the driving circuit element according to claim 8. 13. The mounting of the driving circuit element according to claim 7 on a substrate, the orientation of the driving circuit element is arbitrary with respect to the plurality of output pad electrodes and the plurality of selection pad electrodes. A method for mounting a driving circuit element, which is mounted as described above. 14. The method for mounting a driving circuit element according to claim 13, wherein the driving circuit element according to claim 8 is mounted. 15. When mounting the drive circuit element according to claim 7 on a substrate, the orientation of the drive circuit element is arbitrary with respect to the plurality of output pad electrodes and the plurality of selection pad electrodes. A method for manufacturing a display device, which is mounted as described above. 16. A method of manufacturing a display device according to claim 15, wherein the drive circuit element according to claim 8 is mounted.