KR101663743B1 - Organic Electroluminescent Display Device - Google Patents

Abstract

The present invention provides a light emitting device comprising: a red light emitting region arranged in a first row of a first column; A green light emitting region disposed in the second row of the first column; And a blue light emission region disposed in a second column corresponding to the first row and the second row of the first column, wherein the red, green and blue light emission regions constitute pixel regions, and the red and green light emission regions And the blue light emitting region has a rectangular shape in which the length in the vertical direction is greater than the length in the horizontal direction.

Description

[0001] The present invention relates to an organic electroluminescent display device,

[0001] The present invention relates to an organic light emitting display, and more particularly to an organic light emitting display having an arrangement structure and a shape suitable for a high resolution and a high aperture ratio and including a red, ≪ / RTI >

Since the organic electroluminescent display device (OELD device), which is one of the new flat panel displays, is self-emitting type, it has better viewing angle and contrast ratio than a liquid crystal display device and does not require a backlight It is lightweight and thin, and is also advantageous in terms of power consumption. And it is able to drive DC low voltage, has fast response time and is all solid, so it is resistant to external impact, has wide temperature range, and is cheap in terms of manufacturing cost. Such an organic light emitting display may also be referred to as an organic light emitting diode (OLED) device.

Unlike a liquid crystal display device or a plasma display panel (PDP device), the organic light emitting display device is a very simple process, so it can be said that all the devices are deposition and encapsulation devices.

Particularly, in the active matrix type, a voltage for controlling a current applied to a pixel is charged in a storage capacitor, and a voltage is maintained until a next frame signal is applied, Regardless of the number of wirings, a light emission state is maintained while a single screen is displayed, which will be described with reference to the drawings.

1 is a view showing one pixel region of a conventional organic light emitting display device.

1, the organic light emitting display includes a gate wiring GL, a data wiring DL and a power wiring PL which define a sub-pixel region SP intersecting with each other, A switching thin film transistor Ts, a driving thin film transistor Td, a storage capacitor Cst and a light emitting diode Del are formed in the region SP.

The switching thin film transistor Ts is connected to the gate wiring GL and the data wiring DL and the driving thin film transistor Td and the storage capacitor Cst are connected between the switching thin film transistor Ts and the power wiring PL. And the light emitting diode Del is connected to the driving thin film transistor Td.

When the switching thin film transistor Ts is turned on in response to a gate signal applied to the gate line GL, the organic light emitting display A data signal is applied to the gate electrode of the driving thin film transistor Td and one electrode of the storage capacitor Cst through the switching thin film transistor Ts.

The driving thin film transistor Td is turned on in accordance with the data signal applied to the gate electrode so that a current proportional to the data signal is supplied from the power wiring PL to the light emitting diode Del through the driving thin film transistor Td And the light emitting diode Del emits light with a luminance proportional to the current flowing through the driving thin film transistor Td.

At this time, the storage capacitor Cst is charged with a voltage proportional to the data signal so that the voltage of the gate electrode of the driving thin film transistor Td is kept constant during one frame.

Therefore, the organic light emitting display device can display a desired image by the gate signal and the data signal.

Such an organic light emitting display device includes red, green, and blue pixel regions (sub pixel regions) constituting one pixel region in order to display a full color image, .

FIG. 2 is a view showing a pixel region of a conventional organic light emitting display. Referring to FIG.

2, the organic light emitting display device 10 includes a plurality of pixel regions P, and each of the plurality of pixel regions P includes red, green, and blue subpixel regions SPr, SPg , SPb).

Each of the plurality of pixel regions P has a rectangular shape having a horizontal length H and a vertical length V and the red, green and blue sub pixel regions SPr, SPg, SPb are formed in a plurality of pixel regions P, And are arranged in the horizontal direction (horizontal direction).

For example, each of the red, green, and blue pixel regions SPr, SPg, and SPb has a width of one-third of the width H of the pixel region P, And may have a rectangular shape having a longitudinal side equal to the length (V).

Green, and blue sub-pixel regions SPr, SPg, and SPb, red, green, and blue light emission layers 32, 34, and 36 are formed, respectively.

The red, green and blue light emitting layers 32, 34 and 36 constitute a light emitting diode (Del in FIG. 1) together with first and second electrodes (not shown) And a height h, and are spaced apart from each other by a first distance d1 or more to prevent shadowing with adjacent light emitting layers.

The red, green, and blue light emitting layers 32, 34, and 36 may be formed by a thermal deposition method using a shadow mask. The red, Indicates a portion corresponding to the overlap region of two electrodes.

The area of the red, green and blue light emitting layers 32, 34 and 36 formed in the red, green and blue pixel regions SPr, SPg and SPb may be larger than the area shown in FIG. Green, and blue light emitting layers 32, 34, and 36 corresponding to the overlapping regions of the first and second electrodes contribute to image display. Therefore, for convenience of description, The light emitting layers 32, 34, and 36 are illustrated.

As described above, in the organic light emitting display device 10, one pixel region P is divided along the lateral direction to set red, green, and blue pixel regions SPr, SPg, SPb, Green, and blue light emitting layers 32, 34, and 36 are formed on the blue sub pixel regions SPr, SPg, and SPb, respectively, to display full color images.

As the resolution required for a display device has recently increased, the area allocated to one pixel region P in the organic light emitting display device is gradually reduced, and the red, green, and blue pixel regions SPr, SPg , And SPb are also gradually reduced.

The area allocated to each of the red, green and blue light emitting layers 32, 34 and 36 is gradually reduced. The height h of each of the red, green and blue light emitting layers 32, 34, The width w of each of the red, green and blue light emitting layers 32, 34 and 36 corresponds to the vertical length V of the pixel region P, ), And therefore, it is difficult to reduce it further by reaching the reduction limit.

That is, the red, green, and blue light emitting layers 32, 34, and 36 must maintain a first distance d1 from each other in order to prevent color mixing with adjacent light emitting layers. Even if the resolution of the display device is increased and the area of each pixel region P is reduced, it should be maintained.

Accordingly, as the resolution of the organic light emitting display increases, the area allocated to each of the red, green, and blue light emitting layers 32, 34, and 36 sharply decreases. As a result, , 36 are difficult to fabricate.

An object of the present invention is to provide an organic electroluminescence display device having improved resolution and aperture ratio by alternately arranging red and green sub pixel regions in a first column of each pixel region and arranging red pixel regions in a second column .

In addition, the present invention is configured such that the sub-pixel regions of the same color among the red and green sub pixel regions in the upper and lower adjacent pixel regions are grouped so as to be close to each other, thereby facilitating the production of the shadow mask for forming the light- Another object of the present invention is to provide a further improved organic light emitting display.

Further, the present invention provides an organic light emitting display device having improved lifespan and color tone by alternately forming deep blue and sky blue light emitting layers in a blue pixel region and alternately driving the light emitting layers by rendering There is another purpose.

The present invention provides an organic electroluminescent display device in which shadow masks for forming a light emitting layer are more easily formed by forming each of the red, green and blue light emitting layers in the shape of a quadrangle with corners removed, that is, a modified octagonal shape There is another purpose.

In order to achieve the above object, the present invention provides a liquid crystal display comprising: a red light emitting region arranged in a first row of a first column; A green light emitting region disposed in the second row of the first column; And a blue light emission region disposed in a second column corresponding to the first row and the second row of the first column, wherein the red, green and blue light emission regions constitute pixel regions, and the red and green light emission regions And the blue light emitting region has a rectangular shape in which the length in the vertical direction is greater than the length in the horizontal direction.

A distance between the red and blue light emission regions, a separation distance between the red and green light emission regions, a separation distance between the green and blue light emission regions, and a distance between the green light emission region and the pixels The distance between the red light emitting regions of the regions may be equal to each other.

In addition, in the pixel region adjacent to the pixel region, the red pixel region and the green pixel region may be disposed in the second row and the first row, respectively, of the first column.

A distance between the red and blue light emission regions, a separation distance between the red and green light emission regions, a separation distance between the green and blue light emission regions, and a distance between the green light emission region and the pixels The distance between the red light emitting regions of the regions may be equal to each other.

Further, in the pixel region in the vertically adjacent pixel region, the red pixel region and the green pixel region may be disposed in the second row and the first row, respectively, of the first column.

The distance between the red and blue light emission regions, the separation distance between the red and green light emission regions, and the separation distance between the green and blue emission regions are equal to each other, and the separation between the red and blue light emission regions And a distance between the green light emitting region and the green light emitting region is greater than a distance between the green light emitting region and the red light emitting region of the pixel region adjacent in the longitudinal direction, It can be big.

In addition, the two green light emitting regions disposed in proximity to the pixel region adjacent in the longitudinal direction may have a rectangular shape in which two outer edges are removed.

The length of each of the red and green light emission regions may be greater than the length of the blue light emission region in the horizontal direction.

A first electrode formed on each of the red, green and blue light emission regions, and below the red, green and blue light emission regions, and a second electrode formed on each of the red, green and blue light emission regions, And the red, green and blue light emitting regions may correspond to the first electrodes exposed through the openings of the bank layer.

According to another aspect of the present invention, there is provided a liquid crystal display device including: a red light emitting region arranged in a first row of a first column and a first row of a third column; a green light emitting region arranged in a second row of the first column and a second row of the third column; A deep light emission region disposed in the first row and the second column corresponding to the second row and a ferroelectric emission region disposed in the fourth column corresponding to the first row and the second row of the third column The method of driving an organic light emitting display device according to the present invention includes the steps of driving the deep light emitting region and the light emitting region alternately.

When the organic light emitting display device displays an image in which the color is emphasized, the step of alternately driving the deep light emitting region and the soft light emitting region may include: Driving; And driving the light emitting region in a state where the deep light emitting region is turned off when the organic light emitting display displays an image in which color sensitivity is not important.

In addition, in the step of driving the deep light emitting region in a state where the light emitting region is off, the deep light emitting region and the red light emitting region and the green light emitting region in the third column may constitute one unit pixel.

In the step of driving the luminescent region in a state where the luminescent region is off, the luminescent region, the green luminescent region, and the luminescent region in the third row may form one unit pixel.

In the organic electroluminescence display device according to the present invention, by alternately arranging the red and green sub pixel regions in the first column of each pixel region and arranging the blue sub pixel regions in the second column, the resolution and the aperture ratio of the organic light emitting display device are improved can do.

A shadow mask for forming a light emitting layer can be easily fabricated by grouping the sub pixel regions of the same color among the red pixel region and the green pixel region of adjacent pixel regions in close proximity to one another. And the aperture ratio can be further improved.

Also, the life and color of the organic light emitting display can be improved by alternately forming deep blue and sky blue light emitting layers in the blue pixel region and alternately driving the light emitting layers by rendering.

By forming each of the red, green and blue light emitting layers in the shape of a square in which edges are removed, that is, a modified octagonal shape, a shadow mask for forming a light emitting layer can be manufactured more easily.

1 is a view showing one pixel region of a conventional organic light emitting display device.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an organic light-
FIG. 3 is a view showing a pixel region of an organic light emitting display according to a first embodiment of the present invention. FIG.
4 is an equivalent circuit diagram of some pixel regions of an organic light emitting display according to a first embodiment of the present invention.
5 is a cross-sectional view of part of a pixel region of an organic light emitting display according to the first embodiment of the present invention.
FIG. 6A is a view showing a red-green shadow mask used for forming red and green light-emitting layers in an organic light emitting display device according to the first embodiment of the present invention. FIG.
6B is a view showing a blue shadow mask used for forming a blue light emitting layer in the organic light emitting display according to the first embodiment;
7A and 7B are cross-sectional views, respectively, of the red-green shadow mask of FIG. 6A taken along the cutting lines VIIa-VIIa and VIIb-VIIb.
8 is a view illustrating a pixel region of an organic light emitting display according to a second embodiment of the present invention.
9 is a view showing a red-green shadow mask used for forming red and green light-emitting layers in an organic light emitting display device according to a second embodiment of the present invention.
10 is a view showing a pixel region of an organic light emitting display according to a third embodiment of the present invention.
11 is a view showing a red-green shadow mask used for forming red and green light-emitting layers in an organic light emitting display device according to a third embodiment of the present invention.
12 is a view illustrating a pixel region of an organic light emitting display according to a fourth embodiment of the present invention.
13 is a view illustrating a blue shadow mask used for forming a deep blue and a blue light emitting layer in an organic light emitting display device according to a fourth embodiment of the present invention.
FIG. 14 is a view showing some pixel regions of an organic light emitting display according to a fifth embodiment of the present invention. FIG.
15 is a view showing a red-green shadow mask used for forming red and green light-emitting layers in an organic light emitting display device according to a fifth embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 3 is a view illustrating a pixel region of an organic light emitting display according to a first embodiment of the present invention. Referring to FIG.

3, the organic light emitting display device 110 includes a plurality of pixel regions P1 to P4 arranged in a matrix, and each of the plurality of pixel regions P1 to P4 includes red , And blue pixel regions (SPr, SPg, SPb).

Each of the plurality of pixel regions P1 to P4 has a rectangular shape having a horizontal length H and a vertical length V and the red and green pixel regions SPr and SPg have a rectangular shape having a plurality of pixel regions P1 to P4, And the blue sub pixel region SPb is disposed in the second column of each of the plurality of pixel regions P1 to P4.

That is, each of the plurality of pixel regions P1 to P4 is divided into first and second rows along the horizontal direction (horizontal direction), and the first column is divided into first and second rows along the vertical direction The first and second rows of the first column are defined as red and green pixel regions SPr and SPg, respectively, and the second column is defined as a red pixel region SPb.

The red and green pixel regions SPr and SPg are arranged in the first and second rows of the first column of the plurality of pixel regions P1 to P4, (P1 and P3, or P2 and P4).

For example, when red and green subpixel areas SPr and SPg are arranged in the first and second rows of the first column of the first pixel area P1, In the first row of the first column of the three-pixel region P3, a red sub-pixel region SPr different from the green sub-pixel region SPg of the second row of the first row of the first pixel region P1 is arranged.

Green, and blue light emission layers 132, 134, and 136 are formed in the red, green, and blue pixel regions SPr, SPg, and SPb, respectively.

The red, green, and blue light emitting layers 132, 134, and 136, together with the upper and lower first and second electrodes 130 and 138 of FIG. 5, constitute a light emitting diode (Del in FIG. 5) And are spaced apart from each other by a first distance d1 or more in the vertical direction and the horizontal direction (vertical, horizontal, left and right) in order to prevent shadowing.

For example, the first distance d1 may be about 22 [mu] m.

Here, the red and green light-emitting layers 132 and 134 each have a rectangular shape of a predetermined first width w1 and a first height h1, and the blue light-emitting layer 136 has a predetermined second width w2, Since the red and green light emitting layers 132 and 134 are formed by dividing the first row of one pixel region P1 to P4 along the vertical direction (vertical direction), the first width since the blue light emitting layer 136 is formed by dividing one pixel region P1 to P4 along the horizontal direction (horizontal direction), the blue light emitting layer 136 may have a second width (w1) larger than the first height h1, (w2) is smaller than the second height (h2).

The red, green, and blue light emitting layers 132, 134, and 136 may be formed by a thermal deposition method using a shadow mask. The red, And the portion corresponding to the overlap region of the two electrodes 130 and 138. [

That is, the areas of the red, green, and blue light emitting layers 132, 134, and 136 formed in the actual red, green, and blue pixel regions SPr, SPg, and SPb may be larger than the illustrated areas, The red, green, and blue light emitting layers 132, 134, and 136 corresponding to the overlapping regions of the two electrodes 130 and 138 emit light and contribute to image display. Therefore, Green, and blue light-emitting layers 132, 134, and 136 corresponding to the overlapping regions of the red, green and blue light-emitting layers 132, 134, and 136, respectively.

Particularly, the first electrode 130 is exposed through the opening (128a in FIG. 5) of the bank layer (128 in FIG. 5) and the red, green and blue light emitting layers 132, 134, When the second electrode 138 is integrally formed on the entire surface of the red, green, and blue light emitting layers 132, 134, and 136, The overlapping region of the banks 130 and 138 can be defined as the same as the opening 128a of the bank layer 128, which will be described in detail later.

As described above, in the organic light emitting display device 110 according to the first embodiment of the present invention, each of the plurality of pixel regions P1 to P4 is divided in the horizontal direction (horizontal direction) The red and green pixel regions SPr and SPg are alternately arranged and the blue pixel region SPb is arranged in the second column so that red, Green, and blue light-emitting layers 132, 134, and 136 are formed in the blue sub pixel regions SPr, SPg, and SPb, respectively.

Therefore, the red, green, and blue pixel regions SPr, SPg, and SPb of the organic light emitting display device 110 according to the first embodiment of the present invention are arranged such that one pixel region P1 to P4 are arranged in the horizontal direction and the vertical direction (SPr, SPg, and SPb in FIG. 2), which is defined by being divided into three along the horizontal direction, as compared with the conventional red, green, and blue pixel regions ), And it is possible to easily cope with the reduction of the pixel area according to the increase in resolution.

That is, even when the red, green, and blue light emitting layers 132, 134, and 136 of the red, green, and blue pixel regions SPr, SPg, and SPb decrease in size as the resolution increases, 132, 134, and 136 are not reduced to the limit, the shadow mask used for forming the red, green, and blue light emitting layers 132, 134, and 136 can be easily manufactured.

The circuit configuration of each pixel region of such an organic light emitting display will be described with reference to the drawings.

FIG. 4 is an equivalent circuit diagram of a pixel region of an organic light emitting display according to a first embodiment of the present invention, and FIG. 5 is a cross-sectional view of a pixel region of an organic light emitting display according to a first embodiment of the present invention .

4, the organic light emitting display device 110 includes a plurality of gate wirings GL1 and GL2, a plurality of data wirings DL1, DL2, and DL3, and a plurality of power wirings PL1, PL2, PL3).

Here, the portion surrounded by the first and second gate lines GL1 and GL2, the first data line DL1 and the third power line PL3 is defined as the pixel region P.

The pixel region P is divided into first and second rows along the horizontal direction (horizontal direction), and the first column is divided into first and second rows along the vertical direction (vertical direction) The row is defined as the red subpixel area SPr, the second row of the first column is defined as the green pixel area SPg, and the second column is defined as the blue pixel area SPb.

A switching thin film transistor Ts, a driving thin film transistor Td, a storage capacitor Cst and a light emitting diode Del are formed in red, green and blue pixel regions SPr, SPg and SPb, respectively. And the storage capacitor Cst are not limited to the corresponding sub-pixel regions SPr, SPg, SPb and may be disposed in different sub-pixel regions, and the positions of the light-emitting diodes Del, Green, and blue light emitting layers (132, 134, and 136 in FIG. 3) are formed on the first electrode 130 in the sub-pixel regions SPr, SPg, Green, and blue pixel regions SPr, SPg, and SPb as shown in FIG. 3 can be defined.

The first power line PL1, the second data line DL2, the second power line PL2 and the third data line DL3 are connected between the first data line DL1 and the third power line PL3 However, the present invention is not limited to this, and they may be arranged in other forms.

For example, the driving thin film transistor Td of the rubbing sub-pixel region SPg may be formed in a state where the second power line PL2 is omitted and the second data line DL2 is formed at the position of the second power line PL2. One of the first power lines PL1 may be shared by the red and green sub pixel regions SPr and SPg by connecting the first power line PL1 to the first power line PL1.

Therefore, the switching thin film transistor Ts, the driving thin film transistor Td, the storage capacitor Cst and the light emitting diode Del of the red sub-pixel region SPr are connected to the first gate wiring GL1 and the first data wiring DL1 And the switching thin film transistor Ts, the driving thin film transistor Td, the storage capacitor Cst and the light emitting diode Del of the rubbing sub pixel region SPg are driven by a signal supplied to the first gate wiring GL1 The driving thin film transistor Td, the storage capacitor Cst and the light emitting diode Del of the blue sub pixel region SPb are driven by a signal supplied to the first data line DL2 and the second data line DL2, Are driven by signals supplied to the first gate wiring GL1 and the third data wiring DL3.

5, the organic light emitting display device 110 includes a substrate 111 made of glass or plastic, a driving thin film transistor Td formed on the substrate 111, a driving thin film transistor Td, And a light emitting diode (Del) connected to the light emitting diode (LED).

Although not shown, a plurality of gate wirings (GL1 and GL2 in Fig. 4), a plurality of data wirings (DL1, DL2 and DL3 in Fig. 4) and a plurality of power wirings (PL1, PL3) is formed, and a switching thin film transistor (Ts in Fig. 4) connected to the gate wiring and the data wiring is also formed.

Specifically, a semiconductor layer 112 including an active region 112a, a source region 112b, and a drain region 112c is formed on a substrate 111. A semiconductor layer 112 is formed on the front surface of the substrate 111 on the semiconductor layer 112 A gate insulating film 114 is formed.

The semiconductor layer 112 is made of a semiconductor material such as amorphous silicon or polycrystalline silicon. The active region 112a is made of intrinsic silicon and the source region 112b and the drain region 112c are made of impurity silicon impurity-doped silicon, and the gate insulating layer 114 may be formed of an inorganic insulating material such as a silicon nitride (SiNx) layer or a silicon oxide (SiO2) layer.

A gate electrode 116 is formed on the gate insulating film 114 corresponding to the semiconductor layer 112 and an interlayer insulating film 118 is formed on the entire surface of the substrate 111 above the gate electrode 116.

The gate electrode 116 is made of a conductive metal material such as aluminum (Al) or an aluminum alloy. The interlayer insulating film 118 is formed of an inorganic insulating material such as a nitride film (SiNx), a silicon oxide film (SiO2), or benzocyclobutene. , An acrylic resin, and the like.

The interlayer insulating film 118 includes source region and drain region contact holes 120a and 122a that respectively expose the source and drain regions 112b and 112c.

A source electrode 120, a drain electrode 122 and a data line 124 are formed on the interlayer insulating layer 118. The source electrode 120 is connected to the source region 112b through the source region contact hole 120a. And the drain electrode 122 is connected to the drain region 112c through the drain region contact hole 122a.

Although not shown, the switching thin film transistor is also connected to the driving thin film transistor Td through the semiconductor layer 112, the gate electrode 116, the source electrode 120 and the drain electrode 122, And the gate wiring may be formed of the same material as the gate electrode 116 and the same material.

A protective layer 126 is formed on the entire surface of the substrate 111 above the driving thin film transistor Td. The protective layer 126 may be formed of an inorganic insulating material such as a nitride film (SiNx), a silicon oxide film (SiO2), or a benzocyclobutene And an acrylic resin, and includes a drain electrode contact hole 126a that exposes the drain electrode 122. The drain electrode contact hole 126a may be formed of an organic insulating material, such as acrylic resin, or acrylic resin.

The first electrode 130 is formed on the passivation layer 126 corresponding to the pixel region P and the first electrode 130 is connected to the drain electrode 122 through the drain electrode contact hole 126a.

A bank layer 128 is formed on the first electrode 130 so as to cover the edge of the first electrode 130. The bank layer 128 includes a plurality of openings for exposing the first electrode 130, (128a).

The bank layer 128 may be formed of an inorganic insulating material such as a nitride film (SiNx), a silicon oxide film (SiO2), or an organic insulating material such as benzocyclobutene or acrylic resin.

Green, and blue light emitting layers 132, 134, and 136 are respectively formed on the red, green, and blue pixel regions SPr, SPg, and SPb on the first electrode 130 exposed through each of the plurality of openings 128a, And a second electrode 138 is formed on the entire surface of the substrate 111 above the red, green and blue light emitting layers 132, 134 and 136.

The first electrode 130, the light emitting layers 132, 134 and 136 and the second electrode 138 form red, green and blue light emitting diodes, and the first and second electrodes 130 and 138 are connected to each other. The work function value may be made of a different conductive material.

Electrons and holes are supplied only to the portions formed directly above the first electrode 130 exposed through the openings 128a of the bank layers 128 among the entire regions of the respective light emitting layers 132, So that the light is emitted.

Therefore, in consideration of the light emitting areas of the light emitting layers 132, 134, 136 of the sub-pixel areas SPr, SPg, SPb for determining the aperture ratio of the organic light emitting display device 110, Green, and blue light emitting layers 132, 134, and 136 shown in FIG. 3 are formed in respective sub-pixel regions (not shown) SPr, SPg, and SPb) corresponding to the opening 128a of the bank layer 128. [0064] As shown in FIG.

The first and second electrodes 130 and 138 are operated as an anode and a cathode so that the work function value of the electrode operating as the anode is larger than the work function value of the electrode operating as the cathode. Can be selected.

For example, the anode electrode may be made of a material such as indium-tin-oxide (ITO), and the cathode electrode may be made of aluminum.

Each of the emission layers 132, 134, and 136 may be alternately formed for each sub-pixel region SPr, SPg, SPb by organic materials emitting red, green, and blue light to display color images, (EIL), an emitting material layer (EML), and a hole injecting layer (HIL).

An organic electroluminescent display device can be completed by attaching a separate substrate (not shown) for encapsulation to the substrate 111 on which the second electrode 138 is formed.

In the organic light emitting display device 110 according to the first embodiment of the present invention, the red, green, and blue light emitting layers 132, 134, and 136 may be formed using a shadow mask, which will be described with reference to the drawings .

FIG. 6A is a view showing a red-green shadow mask used for forming red and green light-emitting layers in the organic light emitting display according to the first embodiment of the present invention, and FIG. 6B is a cross- FIG. 3 is a view showing a blue shadow mask used for forming a blue light emitting layer.

6A, the redox shadow mask 160 used for forming the red light emitting layer 132 or the green light emitting layer 134 includes a plurality of opening regions 162 capable of transmitting light emitting materials, And a blocking region 164 surrounding the region 162 and capable of blocking the light emitting material.

Of course, the alignment positions of the redox shadow mask 160 for forming the red light emission layer 132 and the redox shadow mask 160 for forming the green light emission layer 134 are different from each other, and parallel movement in the horizontal direction or the vertical direction And can be aligned with the substrate 111.

Each of the plurality of opening regions 162 is formed to correspond to the red light emitting layer 132 of each pixel region P of the organic light emitting display device 110. The first width w1 and the first height h1 may be, Or may be formed to have an area larger than that of the red light emitting layer 132 substantially.

Therefore, the plurality of opening regions 162 of the redox shadow mask 160 are arranged in the horizontal direction (the horizontal direction) at the sum of the second width w2 of the blue light emitting layer 136 and twice the first distance d1 The first height h1 of the red or green light emitting layers 132 and 134 and the first distance d1 of the green light emitting layers 132 and 134 are spaced apart from each other by a corresponding first length L1 (L1 to w2 + 2 * d1) (L2 to h1 + 2 * d1) corresponding to the sum of two times of the first length L2 and the second length L2.

Here, the first distance L 1, which is the distance in the lateral direction between the plurality of opening regions 162, may be smaller than the second distance L 2, which is the vertical distance between the plurality of opening regions 162 have.

6A, the blue shadow mask 170 used for forming the blue light emitting layer 136 includes a plurality of opening regions 172 and a blocking region 174 surrounding the plurality of opening regions 172 Each of the plurality of opening regions 172 is formed to correspond to the blue light emitting layer 136 of each pixel region P of the organic light emitting display device 110. The second width w2 and the second width w2 May be formed to have a height (h2), or may be formed to have an area substantially larger than that of the blue light-emitting layer (136).

Therefore, the plurality of opening areas 172 of the blue shadow mask 170 are arranged in the transverse direction (horizontal direction), or the first width w1 of the green light emitting layers 132, 134 and the second width d1 of the first distance d1 The fourth length L4 (L4 to L4) corresponding to the first distance d1 in the vertical direction (vertical direction) is spaced apart from the third length L3 (L3 to w1 + 2 * d1) d1).

However, when the resolution of the organic light emitting display device is further increased, the distance between the opening regions of the shadow mask is reduced to cause a problem such as warping.

Particularly, in the case of a red-green shadow mask, the first and second lengths L 1 and L 2, which are distances between the vertical direction (vertical direction) and the horizontal direction (left and right), decrease simultaneously, This will be described with reference to the drawings.

Figs. 7A and 7B are cross-sectional views of the red-green shadow mask of Fig. 6A cut along the cutting lines VIIa-VIIa and VIIb-VIIb, respectively, and will be described with reference to Fig.

7A and 7B, a metal disc (not shown) having a first thickness t1 is etched to form a redox shadow mask 160 having a plurality of opening regions 162 and blocking regions 164 The first length L1 which is a distance in the horizontal direction between the plurality of opening regions 162 may be smaller than the second length L2 which is the vertical distance between the plurality of opening regions 162 And the first width w1 in the transverse direction of each of the plurality of opening regions 162 may be larger than the first height h1 in the longitudinal direction.

For example, the first length L1, the second length L2, the first width w1, and the first height h1 may be about 38 μm, about 46.5 μm, about 49 μm, and about 41.5 μm, respectively.

At this time, in order to smoothly form the light emitting layer, the taper angle [theta] of the blocking region 164 remaining in forming the plurality of opening regions 162 by etching the metal plate should be kept constant at about 59 degrees.

Here, since the sizes of the plurality of opening regions 162 removed by the etching and the separation distances between the plurality of opening regions 162 are different from each other along the horizontal direction and the vertical direction, And the thickness along the longitudinal direction are different from each other.

That is, since the first width w1 along the lateral direction of the plurality of opening regions 162 removed by etching is larger than the first height h1 along the longitudinal direction, the metal original plate is more etched along the lateral direction The blocking region 164 has a second thickness t2 less than the first thickness t1 along the transverse direction and a third thickness t3 greater than the second thickness t2 along the longitudinal direction, ).

For example, the second and third thicknesses t2 and t3 may be about 31.2 m and about 38.2 m, respectively.

The redox shadow mask 160 formed by etching is used to form a light emitting layer in a state of being fixed to a frame or the like. In order to fix the redox shadow mask 160 to a frame or the like, the redox shadow mask 160 is stretched.

In order to prevent deformation of the redox shadow mask 160 during stretching, the redox shadow mask 160 should have a thickness of about 40 占 퐉 or more, since the redox shadow mask 160 has a thickness of about 40 占 퐉 or less, Since the thicknesses are different depending on the transverse direction and the longitudinal direction, the degree of expansion varies depending on the direction, and distortion such as warping can be further exacerbated.

This deformation of the red-green shadow mask may cause a size deformation of the plurality of aperture regions 162 and may result in defects of the green light-emitting layers 132 and 134.

In order to prevent deformation of such a shadow mask, in other embodiments, the red and green pixel regions may be staggered so as to increase the separation distance between a plurality of aperture regions, which will be described with reference to the drawings.

FIG. 8 is a view illustrating a pixel region of an organic light emitting display according to a second embodiment of the present invention. Referring to FIG.

8, the organic light emitting display device 210 includes a plurality of pixel regions P1 to P4 arranged in a matrix, and each of the plurality of pixel regions P1 to P4 includes red , And blue pixel regions (SPr, SPg, SPb).

Each of the plurality of pixel regions P1 to P4 has a rectangular shape having a horizontal length H and a vertical length V. The red and green pixel regions SPr and SPg are formed in a plurality of pixel regions P1 to P4 ), And the blue sub pixel region SPb is arranged in the second column of each of the plurality of pixel regions P1 to P4.

That is, each of the plurality of pixel regions P1 to P4 is divided into first and second rows along the horizontal direction (horizontal direction), and the first column is divided into first and second rows along the vertical direction , The first and second rows of the first column are alternately defined as red and green pixel regions (SPr, SPg), and the second column is defined as a blue pixel region (SPb).

The red and green pixel regions SPr and SPg are alternately arranged in the first and second rows of the first columns of the plurality of pixel regions P1 to P4. (P1 and P3, or P2 and P4).

For example, when red and green subpixel areas SPr and SPg are arranged in the first and second rows of the first column of the first pixel area P1, In the first row of the first column of the three-pixel region P3, a red sub-pixel region SPr different from the green sub-pixel region SPg of the second row of the first row of the first pixel region P1 is arranged.

The red and green pixel regions SPr and SPg are staggered from each other in the first column of the plurality of pixel regions P1 and P2 or P3 and P4 adjacent in the lateral direction (right and left).

For example, when red and green sub pixel regions (SPr, SPg) are arranged in the first and second rows of the first column of the first pixel region P1, In the first row of the first column of the two-pixel region P2, a rubbed sub pixel region SPg opposite to the red sub-pixel region SPr of the first row of the first row of the first pixel region P1 is disposed, In the second row of the first column of the second pixel region P2, a red sub-pixel region SPr different from the green sub-pixel region SPg of the second row of the first column of the first pixel region P1 is arranged.

The reason why the red and green pixel regions SPr and SPg are staggered from each other in the pixel regions P1 and P2 or P3 and P4 adjacent to each other in the lateral direction (left and right) is that a plurality of one shadow mask In order to facilitate the production of the shadow mask by increasing the separation distance between the red sub-pixel area SPr or the green sub-pixel area SPg corresponding to the aperture area of the shadow mask, as will be described in detail later.

Green, blue and blue light emission layers 232, 234 and 236 are formed in red, green and blue sub pixel regions SPr, SPg and SPb, respectively. (Not shown) together with the first and second electrodes (not shown) of the upper and lower portions of the first and second light emitting diodes (not shown) to prevent shadowing with the adjacent light emitting layers. For example, the first distance d1 may be about 22 [mu] m.

The red and green light emitting layers 232 and 234 each have a rectangular shape of a predetermined first width w1 and a first height h1 and the blue light emitting layer 236 has a predetermined second width w2, The green and blue light emitting layers 232 and 234 are formed by dividing the first row of one pixel region P1 to P4 along the vertical direction (vertical direction), so that the first width since the blue light emitting layer 236 is formed by dividing one pixel region P1 to P4 along the horizontal direction (horizontal direction), the blue light emitting layer 236 may have a second width (w2) is smaller than the second height (h2).

The red, green, and blue light emitting layers 232, 234, and 236 may be formed by a thermal deposition method using a shadow mask. The red, green, and blue light emitting layers 232, Indicates a portion corresponding to the overlap region of two electrodes.

As described above, in the organic light emitting display device 210 according to the second embodiment of the present invention, each of the plurality of pixel regions P1 to P4 is divided in the horizontal direction (horizontal direction) to form first and second columns The first column is divided in the longitudinal direction (vertical direction), and the red and green pixel regions SPr and SPg are alternately arranged, but a plurality of pixel regions P1 and P2 or P3 and P3 adjacent to each other in the lateral direction Green and blue subpixel regions SPr, SPg and SPb are arranged in the first column of the red, green and blue subpixel regions SPr, SPg and SPb, respectively, Green, and blue light emitting layers 232, 234, and 236 are formed.

Accordingly, the red, green and blue pixel regions SPr, SPg and SPb of the organic light emitting display device 210 according to the second embodiment of the present invention are arranged such that one pixel region P1 to P4 are arranged in the horizontal direction and the vertical direction (SPr, SPg, and SPb in FIG. 2), which is defined by being divided into three along the horizontal direction, as compared with the conventional red, green, and blue pixel regions The shadow mask can easily cope with shrinking of the pixel region according to an increase in resolution and can easily produce a shadow mask used for forming red, green, and blue light emitting layers 232, 234, and 236.

In addition, since the separation distance between the red subpixel region SPr and the green subpixel region SPg in the adjacent pixel region in the lateral direction (right and left) is increased, the shadows used for forming the red and green light emission layers 232 and 234 The mask can be manufactured more easily.

In the organic light emitting display device 210 according to the second embodiment of the present invention, red and green light emitting layers 232 and 234 may be formed using a red-green shadow mask, which will be described with reference to the drawings.

FIG. 9 is a view showing a red-green shadow mask used for forming red and green light-emitting layers in an organic light emitting display device according to a second embodiment of the present invention, and will be described with reference to FIG.

The blue shadow mask used for forming the blue light emitting layer of the organic light emitting display device according to the second embodiment of the present invention is the same as the blue shadow mask of the first embodiment, and a description thereof will be omitted.

9, the redox shadow mask 260 used for forming the red light emitting layer 232 or the green light emitting layer 234 includes a plurality of opening regions 262 through which light emitting materials can be transmitted, And a blocking region 264 surrounding the region 262 and capable of blocking the light emitting material.

Of course, the alignment positions of the redox shadow mask 260 for forming the red light emission layer 232 and the redox shadow mask 260 for forming the green light emission layer 234 are different from each other, and the parallel positions in the horizontal direction or the vertical direction And may be aligned with a substrate (not shown).

Each of the plurality of opening regions 262 is formed so as to correspond to the red light emitting layer 232 of each pixel region P of the organic light emitting display device 210. The first width w1 and the first height h1, Or may be formed to have an area larger than that of the red light emitting layer 232.

Therefore, the plurality of opening areas 262 of the red-green shadow mask 260 are arranged in the longitudinal direction (vertical direction) or the first height h1 of the green light-emitting layers 232 and 234 and the second distance d2 of the first distance d1 (L2 to h1 + 2 * d1) corresponding to the sum of the first distance d2 and the second distance (w2) of the blue light emitting layer 236 in the diagonal direction, (W2 + 2 * d1) ² + d1 ² ) ^1/2 calculated by the sum of the first length d1 and the sum of the first length d1 and the fifth length L5 calculated by the first distance d1.

Here, the fifth length L5, which is a distance in the diagonal direction between the plurality of opening areas 262, is equal to the first length L5, which is a distance in the lateral direction between the plurality of opening areas 162 in the first embodiment (L1) (L1 to w2 + 2 * d1) and becomes a value closer to the second length L2, which is the distance in the vertical direction, between the plurality of opening areas 262. [

That is, since the spacing distance between the plurality of aperture regions 262 is increased, it is possible to more easily cope with the increase in the resolution of the organic light emitting display device 210, The thickness variation of the blocking region 264 of the red-green shadow mask 260 is reduced, so that deformation of the red-green shadow mask 260 can be prevented.

On the other hand, in order to make the shadow mask easier to fabricate, the red and green pixel regions may be arranged close to each other such that the size of the plurality of opening regions and the distance between the plurality of opening regions are further increased in another embodiment .

10 is a view illustrating a pixel region of an organic light emitting display according to a third embodiment of the present invention.

10, the organic light emitting display device 310 includes a plurality of pixel regions P1 to P4 arranged in a matrix, and each of the plurality of pixel regions P1 to P4 includes red , And blue pixel regions (SPr, SPg, SPb).

Each of the plurality of pixel regions P1 to P4 has a rectangular shape having a horizontal length H and a vertical length V. The red and green pixel regions SPr and SPg are formed in a plurality of pixel regions P1- P4 are arranged so as to be adjacent to each other in the vertical direction (upper and lower) in the pixel region (P1 and P3 or P2 and P4), and the blue sub pixel region (SPb) Are arranged in the second column of each of the pixel regions P1 to P4.

That is, each of the plurality of pixel regions P1 to P4 is divided into first and second rows along the horizontal direction (horizontal direction), and the first column is divided into first and second rows along the vertical direction The first and second rows of the first column are alternately defined as red and green sub pixel regions SPr and SPg, respectively, and the second column is defined as a blue sub pixel region SPb.

The red and green pixel regions SPr and SPg are alternately arranged in the first and second rows of the first columns of the plurality of pixel regions P1 to P4. (P1 and P3, or P2 and P4) are grouped so as to be close to the sub-pixel regions of the same color in the first column.

For example, when red and green subpixel areas SPr and SPg are arranged in the first and second rows of the first column of the first pixel area P1, In the first row of the first column of the three pixel region P3, the same ridge subpixel region SPg as the rubbing subpixel region SPg of the second row of the first column of the first pixel region P1 is disposed, The red sub-pixel region SPr is disposed in the second row of the first column of the pixel region P3.

The red and green pixel regions SPr and SPg are staggered from each other in the first column of the plurality of pixel regions P1 and P2 or P3 and P4 adjacent in the lateral direction (right and left).

For example, when red and green sub pixel regions (SPr, SPg) are arranged in the first and second rows of the first column of the first pixel region P1, In the first row of the first column of the two-pixel region P2, a rubbed sub pixel region SPg opposite to the red sub-pixel region SPr of the first row of the first row of the first pixel region P1 is disposed, In the second row of the first column of the second pixel region P2, a red sub-pixel region SPr different from the green sub-pixel region SPg of the second row of the first column of the first pixel region P1 is arranged.

Of course, in the first row of the first column of the fourth pixel region P4 adjacent to the second pixel region P2 in the vertical direction (up and down), the red subpixel of the second row of the first row of the second pixel region P2 The same red sub-pixel region SPr as the region SPr is arranged and the green sub-pixel region SPg is arranged in the second row of the first row of the fourth pixel region P4.

The reason why the sub-pixel regions of the same color are arranged so as to be close to each other in the first column of the plurality of pixel regions (P1 and P3 or P2 and P4) adjacent in the vertical direction (up and down) The pixel region is made to correspond to one opening region of the shadow mask so that the size of the plurality of opening regions of the shadow mask and the separation distance between the plurality of opening regions are increased to facilitate fabrication of the shadow mask.

The reason why the red and green sub pixel regions SPr and SPg are staggered from each other in the plurality of pixel regions P1 and P2 or P3 and P4 adjacent to each other in the lateral direction (right and left) This is for facilitating the production of the shadow mask by increasing the separation distance between the red sub-pixel area SPr or the green sub-pixel area SPg corresponding to the opening area.

 The arrangement of the plurality of opening areas of the above shadow mask will be described later in more detail.

Green, and blue light emission layers 332, 334, and 336 are formed on the red, green, and blue sub pixel regions SPr, SPg, and SPb, respectively. (Not shown) together with the first and second electrodes (not shown) of the upper and lower portions of the first and second light emitting diodes (not shown) to prevent shadowing of adjacent light emitting layers of different colors, As shown in FIG.

In the case where the light emitting layers of the same color are adjacent to each other, it is not necessary to take into consideration the risk of color mixture, so that the adjacent light emitting layers may be separated by a second distance d2 smaller than the first distance d1, d1 may be about 22 mu m, and the second distance d2 may be about 13 mu m.

For example, red and green sub pixel regions (SPr, SPg) are arranged in the first and second rows of the first column of the first pixel region (P1) The red and green light emitting layers 332 and 334 of the first pixel region P1 may be formed in the first and second rows of the pixel region P3 when the green and red sub pixel regions SPg and SPr are disposed, Emitting layer 334 of the first pixel region P1 and the green and red light-emitting layers 324 and 322 of the third pixel region P3 are spaced apart from each other by a first distance d1, And the green light-emitting layer 334 of the third layer P3 are separated by a second distance d2 that is smaller than the first distance.

Accordingly, when the sizes of the pixel regions are the same, the size of each of the red and green light-emitting layers 332 and 334 in the third embodiment can be set larger than that of each of the red and green light-emitting layers 232 and 234 in the second embodiment.

That is, the red and green light-emitting layers 332 and 334 each have a rectangular shape having a predetermined first width w1 and a third height h3 greater than the first height h1, And has a rectangular shape of a second width (w2) and a second height (h2) set in advance.

10, the red and green light emitting layers 332 and 334 are formed by dividing the first row of one pixel region P1 to P4 along the vertical direction (vertical direction), so that the first width the third height h3 may be relatively increased to increase the contrast of the red and green light-emitting layers 332 and 334 (i.e., ) May have a rectangular shape (long rectangular shape in the longitudinal direction) in which the third height h3 is larger than the first width w1.

Since the blue light emitting layer 336 is formed by dividing one pixel region P1 to P4 along the horizontal direction (horizontal direction), the blue light emitting layer 336 may have a rectangular shape with the second width w2 being smaller than the second height h2 have.

The red, green, and blue light emitting layers 332, 334, and 336 may be formed by a thermal deposition method using a shadow mask. The red, green, and blue light emitting layers 332, Indicates a portion corresponding to the overlap region of two electrodes.

As described above, in the organic light emitting display device 310 according to the second embodiment of the present invention, each of the plurality of pixel regions P1 to P4 is divided in the horizontal direction (horizontal direction) to form first and second columns The first row is divided in the longitudinal direction (vertical direction) so that the red and green pixel regions SPr and SPg are alternately arranged and the plurality of pixel regions P1 and P3 or P2 And P4 are arranged close to each other in the first column of the same color and the sub-pixel areas of the same color are arranged in the first column of the plurality of pixel areas (P1 and P2, or P3 and P4) Green and blue subpixel regions SPr, SPg and SPb, red, green and blue light emission layers 332, 334 and 336 are arranged in the red, green and blue subpixel regions SPr, SPg and SPb, respectively. ).

Therefore, the red, green and blue pixel regions SPr, SPg and SPb of the organic light emitting display device 310 according to the third embodiment of the present invention are arranged such that one pixel region P1 to P4 are arranged in the horizontal direction and the vertical direction (SPr, SPg, and SPb in FIG. 2), which is defined by being divided into three along the horizontal direction, as compared with the conventional red, green, and blue pixel regions The shadow mask can easily cope with shrinking of the pixel region according to the increase in resolution and can easily produce a shadow mask used for forming the red, green, and blue light emitting layers 332, 334, and 336.

In addition, the sub pixel regions of the same color among the red pixel region (SPr, SPg) of the adjacent pixel region in the vertical direction (up and down) are collectively arranged to correspond to one opening region, The separation distance between the red subpixel region SPr and the green subpixel region SPg in the adjacent pixel region is increased so that the shadow mask used for forming the red and green light emission layers 332 and 334 can be manufactured more easily.

In the organic light emitting display device 310 according to the third embodiment of the present invention, red and green light emitting layers 332 and 334 may be formed using a red-green shadow mask, which will be described with reference to the drawings.

FIG. 11 is a view showing a red-green shadow mask used for forming red and green light-emitting layers in an organic light emitting display device according to a third embodiment of the present invention, and FIG.

The blue shadow mask used for forming the blue light emitting layer of the organic light emitting display device according to the third embodiment of the present invention is the same as the blue shadow mask of the first and second embodiments, and a description thereof will be omitted.

11, the red-green shadow mask 360 used for forming the red light-emitting layer 332 or the green light-emitting layer 334 includes a plurality of opening regions 362 capable of transmitting light-emitting materials, And a blocking region 364 surrounding the region 362 and capable of blocking the light emitting material.

Of course, the alignment positions of the redox shadow mask 360 for forming the red light emission layer 332 and the redox shadow mask 360 for forming the green light emission layer 334 are different from each other, and parallel movement in the horizontal direction or the vertical direction And may be aligned with a substrate (not shown).

Each of the plurality of opening regions 362 is formed so as to correspond to two red light emitting layers 332 arranged close to the pixel region P adjacent in the longitudinal direction (upper and lower) of the organic light emitting display device 310, A fourth height h4 (h4 to 2 * h3 + d2) corresponding to the sum of the width w1, the double of the third height h3 and the second spacing distance d2, May be formed in an area larger than the sum of the two red light emitting layers 232 and the spacing interval therebetween.

The plurality of aperture regions 362 of the redox shadow mask 360 are arranged such that the sum of the second width w2 of the blue light emitting layer 336 in the diagonal direction and twice the first distance d1 and the second distance d2 (W2 + 2 * d1) ² + d1 ² ) ^{1/2 that} is calculated by the first length L3 (d1) (L6 to 2 * h3 + 2 * d1 + d2) corresponding to the sum of two times the third height h3 of the first distance d1 and the second distance d2, d2).

Here, the fourth height h4 of each of the plurality of opening regions 362 is greater than the first height h1 of each of the plurality of opening regions 162 and 262 in the first and second embodiments, The sixth length L6, which is the distance in the vertical direction between the plurality of opening regions 362, is a distance in the vertical direction between the plurality of opening regions 162 and 262 in the first and second embodiments Is greater than the second length L2 (L2 to h1 + 2 * d1).

That is, since the size of each of the plurality of opening regions 362 and the separation distance between the plurality of opening regions 362 are increased, it is possible to more easily cope with the increase in resolution of the organic light emitting display device 310, The thickness deviation of the blocking region 364 of the redox shadow mask 360 is reduced to prevent deformation of the redox shadow mask 360 and prevent the redox shadow mask 360 360 can be manufactured more easily.

On the other hand, in order to make the shadow mask easier to fabricate, in another embodiment, two different blue pixel regions may be arranged so as to further increase the separation distance between the plurality of aperture regions, which will be described with reference to the drawings .

FIG. 12 is a view showing a pixel region of an organic light emitting display according to a fourth embodiment of the present invention.

12, the organic light emitting display device 410 includes a plurality of pixel regions P1 to P4 arranged in a matrix, and each of the plurality of pixel regions P1 to P4 includes red SPb and SPb1 or red, green and sky blue subpixel regions SPr, SPg and SPb2, as shown in FIG.

Each of the plurality of pixel regions P1 to P4 has a rectangular shape having a horizontal length H and a vertical length V. The red and green pixel regions SPr and SPg are formed in a plurality of pixel regions P1 to P4 Pixel regions (P1 and P3, or P2 and P4) adjacent to each other in the vertical direction (upper and lower) are arranged so as to adjoin the subpixel regions of the same color, and the deep and subrenal pixel regions SPb1 and SPb2 Are alternately arranged in the vertical direction (vertical direction) and the horizontal direction (horizontal direction) in the second column of the plurality of pixel regions P1 to P4.

That is, each of the plurality of pixel regions P1 to P4 is divided into first and second rows along the horizontal direction (horizontal direction), and the first column is divided into first and second rows along the vertical direction The first and second rows of the first column are alternately defined as red and green pixel regions SPr and SPg, respectively, and the second column is defined as the deep blue or blue pixel region SPb1 and SPb2.

The red and green pixel regions SPr and SPg are alternately arranged in the first and second rows of the first columns of the plurality of pixel regions P1 to P4. (P1 and P3, or P2 and P4) are grouped so as to be close to the sub-pixel regions of the same color in the first column.

For example, when red and green subpixel areas SPr and SPg are arranged in the first and second rows of the first column of the first pixel area P1, In the first row of the first column of the three pixel region P3, the same ridge subpixel region SPg as the rubbing subpixel region SPg of the second row of the first column of the first pixel region P1 is disposed, The red sub-pixel region SPr is disposed in the second row of the first column of the pixel region P3.

The red and green pixel regions SPr and SPg are staggered from each other in the first column of the plurality of pixel regions P1 and P2 or P3 and P4 adjacent in the lateral direction (right and left).

For example, when red and green sub pixel regions (SPr, SPg) are arranged in the first and second rows of the first column of the first pixel region P1, In the first row of the first column of the two-pixel region P2, a rubbed sub pixel region SPg opposite to the red sub-pixel region SPr of the first row of the first row of the first pixel region P1 is disposed, In the second row of the first column of the second pixel region P2, a red sub-pixel region SPr different from the green sub-pixel region SPg of the second row of the first column of the first pixel region P1 is arranged.

Of course, in the first row of the first column of the fourth pixel region P4 adjacent to the second pixel region P2 in the vertical direction (up and down), the red subpixel of the second row of the first row of the second pixel region P2 The same red sub-pixel region SPr as the region SPr is arranged and the green sub-pixel region SPg is arranged in the second row of the first row of the fourth pixel region P4.

The reason why the sub-pixel regions of the same color are arranged so as to be close to each other in the first column of the plurality of pixel regions (P1 and P3 or P2 and P4) adjacent in the vertical direction (up and down) The pixel region is made to correspond to one opening region of the shadow mask so that the size of the plurality of opening regions of the shadow mask and the separation distance between the plurality of opening regions are increased to facilitate fabrication of the shadow mask.

The reason why the red and green sub pixel regions SPr and SPg are staggered from each other in the plurality of pixel regions P1 and P2 or P3 and P4 adjacent to each other in the lateral direction (right and left) This is for facilitating the production of the shadow mask by increasing the separation distance between the red sub-pixel area SPr or the green sub-pixel area SPg corresponding to the opening area.

 The arrangement of the plurality of opening areas of the above shadow mask will be described later in more detail.

The second column of the first, second, third and fourth pixel regions P1, P2, P3 and P4 adjacent to each other in the vertical direction (vertical direction) and the horizontal direction (left and right) Pixel regions SPb1, SPb2, SPb2 and SPb1 are arranged. The deep-light and the light-emitting layers 436 and 438 of the deep and the sub-pixel regions SPb1 and SPb2 are composed of different materials and are not simultaneously formed. Accordingly, it is easy to fabricate a shadow mask. The arrangement of the plurality of opening regions of such a shadow mask will be described in detail later.

Green, green, and blue light emission layers 432, 434, 436 and 438 are formed on the red, green, blue and blue sub pixel regions SPr, SPg, SPb1 and SPb2, The adjacent luminescent layers 432, 434, 436 and 438 constitute a light emitting diode (not shown) together with first and second electrodes (not shown) and the adjacent light emitting layers of the same color are spaced apart from each other by a second distance d2 smaller than the first distance d1, wherein the first distance d1 may be about 22 m.

For example, red and green sub pixel regions (SPr, SPg) are arranged in the first and second rows of the first column of the first pixel region (P1) The red and green light emitting layers 432 and 434 of the first pixel region P1 are arranged in the first and second rows of the pixel region P3, And the green and red light emitting layers 434 and 432 of the third pixel region P3 are spaced apart from each other by a first distance d1 and the green light emitting layer 434 of the first pixel region P1 and the third pixel region Emitting layers 434 of the third layer P3 are separated by a second distance d2 smaller than the first distance.

Accordingly, when the sizes of the pixel regions are the same, the sizes of the red and green light-emitting layers 432 and 434 of the fourth embodiment are set larger than the sizes of the red and green light-emitting layers 232 and 234 of the second embodiment, And green light emitting layers 432 and 434 each have a rectangular shape having a predetermined first width w1 and a third height h3 greater than the first height h1, Have a rectangular shape of a second width (w2) and a second height (h2), respectively, set in advance.

Here, the red and green light-emitting layers 432 and 434 may have a rectangular shape (a long rectangular shape in the transverse direction) having a first width w1 greater than a third height h3, or a third height h3 may be a first And may have a rectangular shape (longer rectangular shape in the longitudinal direction) larger than the width w1.

The first and second light emitting layers 436 and 438 are formed by dividing one pixel region P1 to P4 along the horizontal direction so that the second width w2 is smaller than the second height h2 And may have a rectangular shape.

The red, green, blue, and blue light emitting layers 432, 434, 436, and 438 may be formed by a thermal deposition method using a shadow mask. , And 438 denote the portions corresponding to the overlap regions of the first and second electrodes.

The deep blue light emitting layers 436 and 438 have advantages and disadvantages due to the physical properties of the material. The deep blue light emitting layer 436 has an advantage in terms of color reproducibility, while the blue light emitting layer 438 has advantages in terms of lifetime and light efficiency.

In the organic light emitting display device 410 according to the fourth embodiment of the present invention, the deep shadow and the light emitting layers 436 and 438 can be formed using a blue shadow mask, which will be described with reference to the drawings.

FIG. 13 is a diagram illustrating a blue shadow mask used for forming a deep blue light and a blue light emitting layer in an organic light emitting display device according to a fourth embodiment of the present invention, and FIG. 12 is also described together.

The redox shadow mask used for forming the red light and the green light emitting layer of the organic EL display device according to the fourth embodiment of the present invention is the same as the redox shadow mask of the third embodiment, and a description thereof will be omitted.

13, the bright shadow mask 470 used for forming the deep shadow light emitting layer 436 and the luminescent light emitting layer 438 includes a plurality of opening regions 472 through which light emitting materials can be transmitted, And a blocking region 474 surrounding the region 472 and capable of blocking the luminescent material.

Of course, the alignment position of the blue shadow mask 470 for forming the deep blue light emitting layer 436 and the alignment position of the blue shadow mask 470 for forming the blue light emitting layer 438 are different from each other, and parallel movement in the horizontal direction or the vertical direction And may be aligned with a substrate (not shown).

Each of the plurality of opening regions 472 is formed to correspond to the deep light emitting layer 436 of the organic light emitting display device 410 and is formed to have a second width w2 and a second height h2, The light-emitting layer 436 may be formed to have an area larger than that of the deep-

Accordingly, the plurality of opening areas 472 of the blue shadow mask 470 are formed in such a manner that the sum of the first width w1 of the red light emitting layer 432 in the diagonal direction and twice the first distance d1, (w1 + 2 * d1) ² + d1 ² ) ^{1/2 that} is calculated by the first length L7 (d1) (L8 to h2 + 2 * d1) corresponding to the sum of the height h2 and the sum of twice the first distance d1.

That is, since the distance between the plurality of opening regions 472 increases, it is possible to more easily cope with the increase in the resolution of the organic light emitting display device 410, The thickness variation of the blocking region 474 of the blue shadow mask 470 is reduced to prevent the deformation of the blue shadow mask 470 and make the blue shadow mask 470 easier to fabricate.

On the other hand, in order to make the shadow mask easier to manufacture, in other embodiments, the red and green light-emitting layers may be formed such that the distance between the plurality of aperture regions is further increased by removing the edges of each of the plurality of aperture regions, .

FIG. 14 is a view illustrating a pixel region of an organic light emitting display according to a fifth embodiment of the present invention. Referring to FIG.

14, the organic light emitting display device 510 includes a plurality of pixel regions P1 to P4 arranged in a matrix, and each of the plurality of pixel regions P1 to P4 includes red , And blue pixel regions (SPr, SPg, SPb).

Each of the plurality of pixel regions P1 to P4 has a rectangular shape having a horizontal length H and a vertical length V. The red and green pixel regions SPr and SPg are formed in a plurality of pixel regions P1- P4 are arranged so as to be adjacent to each other in the vertical direction (upper and lower) in the pixel region (P1 and P3, or P2 and P4), and the blue sub pixel region Are arranged in the second column of each of the pixel regions P1 to P4.

That is, each of the plurality of pixel regions P1 to P4 is divided into first and second rows along the horizontal direction (horizontal direction), and the first column is divided into first and second rows along the vertical direction The first and second rows of the first column are alternately defined as the red and green pixel regions SPr and SPg, respectively, and the second column is defined as the blue pixel region SPb.

The red and green pixel regions SPr and SPg are alternately arranged in the first and second rows of the first columns of the plurality of pixel regions P1 to P4. (P1 and P3, or P2 and P4) are grouped so as to be close to the sub-pixel regions of the same color in the first column.

For example, when red and green subpixel areas SPr and SPg are arranged in the first and second rows of the first column of the first pixel area P1, In the first row of the first column of the three pixel region P3, the same ridge subpixel region SPg as the rubbing subpixel region SPg of the second row of the first column of the first pixel region P1 is disposed, The red sub-pixel region SPr is disposed in the second row of the first column of the pixel region P3.

The red and green pixel regions SPr and SPg are staggered from each other in the first column of the plurality of pixel regions P1 and P2 or P3 and P4 adjacent in the lateral direction (right and left).

For example, when red and green sub pixel regions (SPr, SPg) are arranged in the first and second rows of the first column of the first pixel region P1, In the first row of the first column of the two-pixel region P2, a rubbed sub pixel region SPg opposite to the red sub-pixel region SPr of the first row of the first row of the first pixel region P1 is disposed, In the second row of the first column of the second pixel region P2, a red sub-pixel region SPr different from the green sub-pixel region SPg of the second row of the first column of the first pixel region P1 is arranged.

Of course, in the first row of the first column of the fourth pixel region P4 adjacent to the second pixel region P2 in the vertical direction (up and down), the red subpixel of the second row of the first row of the second pixel region P2 The same red sub-pixel region SPr as the region SPr is arranged and the green sub-pixel region SPg is arranged in the second row of the first row of the fourth pixel region P4.

Thus, by increasing the size of the plurality of opening areas of the shadow mask and the spacing distance between the plurality of opening areas, the shadow mask can be made more easily, which will be described in more detail below .

Green, and blue light emission layers 532, 534, and 536 are formed on the red, green, and blue pixel regions SPr, SPg, and SPb, respectively. (Not shown) together with the first and second electrodes (not shown) of the upper and lower parts, the adjacent light emitting layers of different colors are spaced apart from each other by a first distance d1 or more, The adjacent luminescent layer is formed spaced apart by a second distance d2 smaller than the first distance d1, wherein the first distance d1 may be about 22 mu m.

For example, red and green sub pixel regions (SPr, SPg) are arranged in the first and second rows of the first column of the first pixel region (P1) The red and green light-emitting layers 532 and 534 of the first pixel region P1 and the red and green light-emitting layers 532 and 534 of the first pixel region P1 are arranged in the first row and the second row of the pixel region P3, And the green and red light emitting layers 524 and 522 of the third pixel region P3 are spaced apart from each other by a first distance d1 and the green light emitting layer 534 of the first pixel region P1 and the third pixel region And between the green light-emitting layers 534 of the first pixel P3 are separated by a second distance d2 smaller than the first distance.

Accordingly, when the sizes of the pixel regions are the same, the size of each of the red and green light-emitting layers 532 and 534 in the fifth embodiment can be set larger than the size of each of the red and green light-emitting layers 232 and 234 in the second embodiment.

The two corners of each of the red and green light-emitting layers 532 and 534 are removed. The two edges of the red and green light-emitting layers 532 and 534 are removed from the first row of adjacent pixel regions (P1 and P3, or P2 and P4) The outer four corners of the color luminescent layer are removed.

For example, when the green light-emitting layer 534 is arranged close to the second row of the first row of the first pixel region P1 and the first row of the first row of the third pixel region P3, The two upper corners of the green light emitting layer 534 of the second row of the first row of the first pixel region P1 and the upper two corners of the first row of the first row of the third pixel region P3, The lower two corners of the green light emitting layer 534 of the green light emitting layer 534 are removed.

The removed portion may be in the form of an isosceles triangle having a length of a side, and removing the edge of the light emitting layer may change the shape of the opening (128a in FIG. 5) of the bank layer (128 in FIG. 5) Means to change the area of the electrode.

Therefore, the red and green light-emitting layers 532 and 534 each have a rectangular shape in which edges are cut, each having a predetermined first width w1 and a third height h3 larger than the first height h1, And the blue light-emitting layer 536 has a rectangular shape of a second width (w2) and a second height (h2) set in advance.

Here, the red and green light-emitting layers 532 and 534 may have a rectangular shape in which the first width w1 is greater than the third height h3 (a rectangular shape in which long edges are removed) 3 may have a rectangular shape in which the height h3 is greater than the first width w1, and the shape is a rectangular shape in which long edges are removed.

Since the blue light emitting layer 536 is formed by dividing one pixel region P1 to P4 along the lateral direction (horizontal direction), the second width w2 may have a rectangular shape smaller than the second height h2 have.

As described above, in the organic light emitting display device 510 according to the fifth embodiment of the present invention, each of the plurality of pixel regions P1 to P4 is divided in the horizontal direction (horizontal direction) to form the first and second columns The first row is divided in the longitudinal direction (vertical direction) so that the red and green pixel regions SPr and SPg are alternately arranged and the plurality of pixel regions P1 and P3 or P2 And P4 are arranged close to each other in the first column of the same color and the sub-pixel areas of the same color are arranged in the first column of the plurality of pixel areas (P1 and P2, or P3 and P4) Green and blue subpixel regions SPr, SPg and SPb are arranged in the red, green and blue light emission layers 532, 534 and 536 ).

Therefore, the red, green and blue sub pixel regions SPr, SPg and SPb of the organic light emitting display device 510 according to the fifth embodiment of the present invention are arranged such that one pixel region P1 to P4 are arranged in the horizontal direction and the vertical direction (SPr, SPg, and SPb in FIG. 2), which is defined by being divided into three along the horizontal direction, as compared with the conventional red, green, and blue pixel regions And can easily cope with shrinking of the pixel region according to an increase in resolution, and a shadow mask used for forming red, green, and blue light emitting layers 532, 534, and 536 can be easily manufactured.

In addition, the sub pixel regions of the same color among the red pixel region (SPr, SPg) of the adjacent pixel region in the vertical direction (up and down) are collectively arranged to correspond to one opening region, The separation distance between the red subpixel region SPr and the green subpixel region SPg in the neighboring pixel region is increased so that the shadow mask used for forming the red and green light emission layers 532 and 534 can be manufactured more easily.

Furthermore, by removing the two corners of each of the red and green light-emitting layers 532 and 534, the separation distance between the plurality of opening areas of the shadow mask used for forming the red and green light-emitting layers 532 and 534 can be increased, Accordingly, the shadow mask can be manufactured more easily.

In the organic light emitting display device 510 according to the fifth embodiment of the present invention, red and green light emitting layers 532 and 534 can be formed using a red-green shadow mask, which will be described with reference to the drawings.

FIG. 15 is a view showing a red-green shadow mask used for forming red and green light-emitting layers in an organic light emitting display device according to a fifth embodiment of the present invention, and will be described with reference to FIG.

The blue shadow mask used to form the blue light emitting layer of the organic light emitting display device according to the fifth embodiment of the present invention is the same as the blue shadow mask of the first to third embodiments, and a description thereof will be omitted.

15, the red-green shadow mask 560 used for forming the red light-emitting layer 532 or the green light-emitting layer 534 includes a plurality of opening regions 562 capable of transmitting light-emitting materials, And a blocking region 564 surrounding the region 562 and capable of blocking the light emitting material.

Of course, the alignment positions of the redox shadow mask 560 for forming the red light emission layer 532 and the redox shadow mask 560 for forming the green light emission layer 534 are different from each other, and the parallel positions in the horizontal direction or the vertical direction And may be aligned with a substrate (not shown).

Each of the plurality of opening regions 562 is formed so as to correspond to two red light emitting layers 532 disposed close to the pixel region P adjacent in the longitudinal direction (upper and lower) of the organic light emitting display device 510, A fourth height h4 (h4 to 2 * h3 + d2) corresponding to the sum of the width w1, the double of the third height h3 and the second spacing distance d2, May be formed in an area larger than the sum of the two red light emitting layers 232 and the spacing interval therebetween.

Here, each of the plurality of opening regions 562 has a rectangular shape corresponding to the red and green light-emitting layers 532 from which the edges have been removed, that is, a deformed octagon shape, May be in the form of a triangle, for example, a may be a value of about 3 m or more.

Accordingly, the plurality of opening areas 562 of the red-green shadow mask 560 are arranged such that the sum of the second width w2 of the blue light-emitting layer 536 in the diagonal direction and twice the first distance d1, ((w2 + 2)) which is increased by a length corresponding to twice the height (a / 2 ^1/2 ) of the isosceles triangle in the fifth length L5 calculated by the first length L3 ^{* d1) 2 + d1 2)} 1/2 + 2 * a / 2 , and spaced apart by ^one-half), the longitudinal direction (2 in the third height (h3) in the vertical direction) as an enemy, or green light-emitting layer (332, 334) And the sixth length L6 (L6 to 2 * h3 + 2 * d1 + d2) corresponding to the sum of the doubled distance of the first distance d1 and the second distance d2.

Here, the fourth height h4 of each of the plurality of opening regions 562 is greater than the first height h1 of each of the plurality of opening regions 162 and 262 in the first and second embodiments, The sixth length L6, which is the distance in the vertical direction between the plurality of opening areas 562, is a distance in the vertical direction between the plurality of opening areas 162 and 262 in the first and second embodiments Is greater than the second length L2 (L2 to h1 + 2 * d1).

In addition, the ninth length L9, which is the diagonal spacing distance between the plurality of opening areas 562, is the diagonal spacing between the plurality of opening areas 362, 462 in the third and fourth embodiments Is a value greater than the fifth length L5 (L5 to ((w2 + 2 * d1) ² + d1 ² ) ^1/2 .

Accordingly, since the size of each of the plurality of opening regions 562 and the distance between the plurality of opening regions 562 are increased, it is possible to more easily cope with the increase in the resolution of the organic light emitting display device 510, The thickness deviation of the blocking region 564 of the red-green shadow mask 560 is reduced to prevent deformation of the red-green shadow mask 560 and to prevent deformation of the red-green shadow mask 560 560 can be manufactured more easily.

As described above, in the organic light emitting display device according to the embodiment of the present invention, red and green pixel regions are alternately arranged in the first column of each pixel region and blue pixel regions are arranged in the second column, Not only the sub pixel areas of the same color among the red pixel area and the green pixel area of the adjacent pixel area in the vertical direction (upper and lower) are grouped so as to be close to each other, And can flexibly cope with high resolution.

The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

110: organic electroluminescence display device SPr: red sub-pixel area
SPg: green pixel area SPb: blue pixel area
132: red light emitting layer 134: green light emitting layer
136: blue light-emitting layer

Claims (18)

A red light emitting region arranged in the first row of the first column;
A green light emitting region disposed in the second row of the first column;
And a blue light emitting region disposed in a second column corresponding to the first row and the second row of the first column,
/ RTI >
The red, green and blue light emitting regions constitute pixel regions,
Wherein the red light emitting region has a rectangular shape in which a first width in a lateral direction is larger than a first height in a longitudinal direction,
Wherein the green light emitting region has a rectangular shape in which the second width in the lateral direction is larger than the second height in the longitudinal direction,
Wherein the blue light emission region has a rectangular shape in which the third height in the vertical direction is larger than the third width in the horizontal direction,
The first height of the red light emitting region is smaller than the first width of the red light emitting region and is larger than the third width of the blue light emitting region,
Wherein the second height of the green light emitting region is smaller than the second width of the green light emitting region and is larger than the third width of the blue light emitting region.
The method according to claim 1,
A distance between the red and blue light emission regions, a separation distance between the red and green light emission regions, a separation distance between the green and blue light emission regions, and a distance between the green light emission region and the pixel region adjacent in the longitudinal direction And the spacing distance between the red light emitting regions is equal to that of the organic light emitting display.
The method according to claim 1,
And the red and green sub pixel regions are disposed in the second row and the first row of the first column, respectively, in the pixel region adjacent to the pixel region in the transverse direction.
The method of claim 3,
A distance between the red and blue light emission regions, a separation distance between the red and green light emission regions, a separation distance between the green and blue light emission regions, and a distance between the green light emission region and the pixel region adjacent in the longitudinal direction And the spacing distance between the red light emitting regions is equal to that of the organic light emitting display.
The method according to claim 1,
And the red and green sub pixel regions are disposed in the second row and the first row of the first column in the pixel region adjacent to the pixel region in the longitudinal direction.
5. The method of claim 4,
The distance between the red and blue light emission regions, the separation distance between the red and green light emission regions, and the separation distance between the green and blue light emission regions are equal to each other,
The distance between the red and blue light emission regions, the separation distance between the red light and the green light emission region, and the separation distance between the green light emission region and the green light emission region, Emitting region is larger than a separation distance between the red light-emitting regions.
5. The method of claim 4,
Wherein two adjacent green light emitting regions of the pixel region adjacent in the longitudinal direction have a rectangular shape with two outer edges removed.
The method according to claim 1,
Wherein the length of each of the red and green light emitting regions is greater than the length of the blue light emitting region in the horizontal direction.
The method according to claim 1,
A first electrode formed on each of the red, green and blue light emission regions, and below the red, green and blue light emission regions; and a second electrode formed on each of the red, And the red, green and blue light emission regions correspond to the first electrodes exposed through the openings of the bank layer.
delete delete delete delete The method according to claim 1,
Wherein the first switching thin film transistor, the first driving thin film transistor, and the first storage capacitor for controlling the light emission of the red light emitting region are arranged in a first portion of the pixel region corresponding to the first column over the first and second rows, Respectively,
A second driving thin film transistor, and a second storage capacitor for controlling light emission of the green light emission region are formed in the second portion of the pixel region corresponding to the first column over the first and second rows, Respectively,
And a third switching thin film transistor, a third driving thin film transistor, and a third storage capacitor for controlling light emission of the blue light emission region are disposed in a third portion of the pixel region corresponding to the second column.
15. The method of claim 14,
Wherein the first and second driving TFTs are connected to one power line.
The method according to claim 1,
Wherein the red light emitting region has a rectangular shape in which the first width is 1.18 times or more of the first height,
Wherein the green light emitting region has a rectangular shape in which the second width is 1.18 times or more of the second height.
The method according to claim 1,
A first gate wiring arranged in the lateral direction in correspondence with an upper side of the red and blue light emitting regions;
A second gate wiring arranged in the lateral direction and corresponding to a lower side of the rust and blue light emission regions;
A first data line corresponding to the left side of the red and green light emission regions and arranged in the longitudinal direction;
A second data line corresponding to a central portion of the red and green light emission regions and arranged in the longitudinal direction;
And a second data line connected to the right side of the blue light-
And an organic light emitting diode (OLED).
18. The method of claim 17,
A thin film transistor and a storage capacitor for controlling the red light emitting region are disposed between the first and second data lines,
A thin film transistor and a storage capacitor for controlling the green light emission region are disposed between the second and third data lines,
And the thin film transistor and the storage capacitor for controlling the blue light emission region are disposed on the right side of the third data line.

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