KR100738226B1 - Light Emitting Diodes and Display having the same - Google Patents

Abstract

The present invention provides a substrate, a plurality of electroluminescent elements formed on the substrate, a protection unit for sealing the plurality of electroluminescent elements on the substrate, a driver for driving the above-mentioned plurality of electroluminescent elements, and the above-described driving unit inserted therein. Provided is an electroluminescent display including a PCB substrate having a plurality of holes formed therein.

OLED, protection part, cap, gutter, driving part, double-sided light emission

Description

Light Emitting Diodes and Display having the same

1 is a cross-sectional structural view of a conventional organic light emitting panel.

2 is a plan view of a conventional organic light emitting panel.

3 is a cross-sectional structure diagram of a conventional organic light emitting display device.

4 is a cross-sectional structure diagram of a conventional double-sided organic light emitting display device.

5 is a partially enlarged view of a conventional organic light emitting display device.

6A is a partially enlarged view of an organic light emitting display device according to a first embodiment of the present invention.

6B is an enlarged view of a portion of an organic light emitting display device according to a second embodiment of the present invention;

7 is a cross-sectional structure diagram of a double-sided organic light emitting display device according to a third embodiment of the present invention.

8 is a cross-sectional structure diagram of a double-sided light emitting organic light emitting display device according to a fourth embodiment of the present invention.

9 is a cross-sectional structure diagram of a double-sided organic light emitting display device according to a fifth embodiment of the present invention.

10 is a cross-sectional structure diagram of a double-sided organic light emitting display device according to a sixth embodiment of the present invention.

11 is a cross-sectional structure diagram of a double-sided organic light emitting display device according to a seventh embodiment of the present invention.

Explanation of the main symbols in the drawings

34 transparent substrate 36 light emitting portion

38: protection part 38a: cap (Shield Cap)

38b: Getter 39: Polarizer

81: PCB substrate 82: the first organic light emitting panel

84: first substrate 86: first light emitting portion

88: first protection unit 88a: first shield cap

88b: first gutter 89: first polarizer

92 second organic electroluminescent panel 94 second substrate

96: second light emitting portion 98: second protective portion

98a: second shield cap 98b: second gutter

99: second polarizing plate

The present invention relates to an electroluminescent display device having an improved panel structure. However, hereinafter, the electroluminescent device, the panel, and the electroluminescent display will be described as an example in which the organic light emitting layer is included in the electroluminescent device.

In general, an organic light emitting display device injects electrons and holes from an electron injection electrode and a hole injection electrode into an emission layer, respectively, and injects the electrons and holes thus injected. ) Combine to form excitons with high levels of energy. Therefore, the organic electroluminescent device is a device that emits self by the difference in energy level when the energy state of the excitons described above falls from the excited state to the ground state.

Due to this principle, unlike the conventional thin film liquid crystal display device, since a separate light source is not required, there is an advantage in that the volume and weight of the device can be reduced.

In addition, the organic light emitting diode (OELD) exhibits high quality panel characteristics (low power, high brightness, high reaction rate, low weight). Due to these characteristics, organic light emitting diodes are attracting attention as a powerful next generation display that can be used in most consumer electronic applications such as mobile communication terminals, CHS, PDA, Camcorder, Palm PC.

In addition, since the manufacturing process is simple, there is an advantage that can reduce the production cost more than conventional LCD.

The organic light emitting diode can be classified into a passive matrix type and an active matrix type according to a driving method.

The passive matrix type organic light emitting display device has a simple structure and a simple manufacturing method. However, the passive matrix type organic light emitting device has a disadvantage of high power consumption and a large area of a display device.

On the other hand, an active matrix organic light emitting display device has an advantage of providing high luminous efficiency and high image quality.

Hereinafter, an organic light emitting display device to which the aforementioned organic light emitting display device is applied will be described.

1 is a cross-sectional structural view of a conventional organic light emitting panel, Figure 2 is a plan view of a conventional organic light emitting panel.

1 and 2, in the conventional organic light emitting panel 10, an organic material layer is formed between two electrodes (a first electrode and a second electrode) on a glass substrate 12 to apply voltage to two electrodes. The organic light emitting device 14 for emitting an organic material layer was formed, and the shield cap 16 for sealing the organic light emitting device 14 from the outside is adhered onto the glass substrate 12 by the adhesive 18. there was.

The shield cap 16 has a protrusion 20 formed on the outside thereof, and a gutter 22 for protecting the organic light emitting element 14 by absorbing moisture or oxygen is fixed inside the protrusion 20.

Next, an organic light emitting display device to which the aforementioned organic light emitting panel is applied will be described.

3 is a cross-sectional view of a conventional organic light emitting display device 30.

Referring to FIG. 3, in the structure of the conventional organic light emitting display device 30, the organic light emitting panel 32 is fixed to the PCB 31 by a bracket B and a double-sided tape T. The driving unit D for driving the organic light emitting panel 32 is disposed on the PCB substrate 31.

In the organic light emitting panel 32 described above, a light emitting part 36 including an anode and a cathode electrode and an organic light emitting layer is formed on one side of the transparent substrate 34. In addition, in order to protect the above-mentioned light emitting portion 36 from oxidation and deterioration due to moisture, oxygen, or the like, the organic electroluminescent panel 32 was sealed with a protective portion 38.

In detail, the above-described transparent substrate 34 and the light emitting unit 36 are sealed with a shield cap 38a, and a gutter 38b for removing moisture and oxygen is provided inside the shield cap 38a. there was.

In addition, on the other side of the substrate 34, a polarizing plate 39 was formed in order to prevent a decrease in luminous efficiency due to interference of external light.

4 is a cross-sectional structural view of a conventional double-sided organic light emitting display device 50.

Referring to FIG. 4, the conventional double-sided organic light emitting display device 50 includes first and second organic light emitting panels 52 and 62 serving as a main display and a sub display, respectively. The PCB substrate 51 to be disposed is sandwiched between the two substrates.

In detail, the first organic light emitting panel 52 includes a first light emitting part 56 including first and second electrodes and an organic light emitting layer on the first substrate 54, and the first light emitting part 56. ) Is encapsulated with a first protective portion 58 for preventing oxidation and deterioration of the first light emitting portion 56, that is, a first shield cap 58a provided with a gutter 58b in a predetermined region therein.

In addition, the first polarizing plate 59 was formed on the first shield cap 58a.

The second organic light emitting panel 62 has the same structure as the first organic light emitting panel 52 described above. That is, the second light emitting part 66 including the first and second electrodes and the organic light emitting layer is formed on the second substrate 64, and the second light emitting part 66 is oxidized on the second light emitting part 66. And a second shielding portion 68 for preventing deterioration, that is, a second shield cap 68a provided with a gutter 68b in a predetermined region therein.

In addition, a second polarizing plate 69 was formed on the second shield cap 68a.

In addition, the first and second organic light emitting panels 52 and 62 were fixed on the PCB substrate 51 by a bracket B and a double-sided tape T.

Although not shown in FIG. 4, a sealant was encapsulated between the first organic light emitting panel 52, the PCB substrate 51, and the second organic light emitting panel 62.

3 and 4, for example, in the case of the conventional double-sided organic light emitting display device 50, the thickness may be the thickness of the main display (Hm), the thickness of the PCB substrate (Hpcb), and the thickness of the sub display ( Hs) and the highest height Hp of the driving unit D (hereinafter, the highest height of the driving unit D is abbreviated as Hp) were determined by the sum (Hm + Hpcb + Hp).

In addition, in the conventional organic light emitting display device, Hp is 1 mm or more and often occupies 30% or more of the total thickness of the conventional organic light emitting display device.

Due to the structure of the conventional organic light emitting display device and the limitations of the existing process, the conventional organic light emitting display device does not fully utilize the advantages of light weight and thinning of the organic light emitting display device, and has many limitations in its application field. There was this.

The present invention has been made to solve the above problems and provides an organic light emitting display device that can overcome the limitations of the application range by reducing the overall thickness and weight of the display device by improving the structure of the conventional organic light emitting display device. Its purpose is to.

In order to achieve the above object, the present invention provides a substrate, a plurality of electroluminescent elements formed on the substrate, a protection unit for sealing a plurality of electroluminescent elements on the substrate, a drive unit for driving the plurality of electroluminescent elements described above; An electroluminescent display device including a PCB substrate having a plurality of holes formed therein is provided.

The above-mentioned hole on the PCB substrate is characterized in that it is formed in the shape of the contact surface of each drive portion in part or all of the position on the PCB substrate corresponding to the position where the drive portion is inserted into.

In addition, the above-described holes on the PCB substrate are characterized in that, when a plurality of driving parts having different lengths are inserted into each other, the heights of the protrusions of the driving parts inserted therein are the same or lower than those of the highest height of the protection part.

In addition, the electroluminescent device may include an organic light emitting layer.

In another aspect, the present invention provides a first electroluminescent panel comprising a first substrate, a plurality of electroluminescent elements formed on the first substrate, a first protective portion sealing a plurality of electroluminescent elements on the first substrate, A second electroluminescent panel comprising a second substrate, a plurality of electroluminescent elements formed on the second substrate, a second protective portion sealing a plurality of electroluminescent elements on the second substrate, and an electroluminescent element of the first electroluminescent panel And an electric field including a PCB substrate having a plurality of holes into which the first driver and the second driver are inserted into the first driver, a second driver driving the electroluminescent element of the second electroluminescent panel. Provided is a light emitting display device.

The above-mentioned hole on the PCB substrate is characterized in that the convex portion of the first protection portion and the convex portion of the second protection portion described above are formed to be in direct contact with each other or to be spaced apart from each other by a predetermined distance.

Further, the above-mentioned hole on the PCB substrate is formed in the shape of each contact surface of the first driver or the second driver at some or all of the positions on the PCB substrate corresponding to the positions inserted into the above-described first driver and the second driver. It is characterized by being.

In addition, the above-described holes on the PCB substrate have a height of each protrusion of the first driving part inserted therein when the plurality of first driving parts having different lengths or the plurality of second driving parts having different lengths are inserted therein. The height is equal to or lower than the highest height of the protection portion, and the height of each protrusion of the second driving portion inserted therein is the same or lower compared to the highest height of the second protection portion.

In addition, the electroluminescent device of the first electroluminescent panel and the electroluminescent device of the second electroluminescent panel may include an organic light emitting layer.

Hereinafter, various embodiments of the present invention will be described and described, and compared with the prior art as necessary.

FIG. 5 is a partially enlarged view of region A of FIG. 3 according to a conventional organic light emitting display device.

Referring to FIG. 5, it can be seen that the driving unit D is inserted into the PCB substrate 31, and the PCB substrate 31 and the driving unit D are electrically connected by the contact unit P. Referring to FIG. . Such a conventional arrangement of the driving unit has become a cause of the problem of reducing the scope of application to the process limit.

Hereinafter, the arrangement of the drive unit of the present invention in which the arrangement structure of the conventional drive unit shown in FIG. 5 is improved will be described with reference to FIGS. 6A and 6B.

6A and 6B are partially enlarged views of the organic light emitting display device of the present invention corresponding to FIG. 5.

Referring to FIG. 6A, according to the first embodiment of the present invention, a hole having a predetermined depth is formed in a PCB substrate to reduce the height of the driving part D electrically connected by the contact part P by the depth of the hole. In addition, the height of the second drive portion Hp 'is effectively lowered relative to the height of the first drive portion Hp on FIG. 5, thereby achieving the desired purpose of the present invention.

Referring to FIG. 6B, the second embodiment of the present invention has the same structure as the first embodiment described above, except that the driving part is electrically connected to the PCB substrate by the contact portion P by forming a hole to penetrate the PCB substrate. By lowering the height of (D) as much as the depth of the hole, the height of the third drive portion Hp '' can be effectively lowered relative to the height of the first drive portion Hp on FIG. 5 to maximize the desired purpose of the present invention. It is a form that can make an effect.

Hereinafter, embodiments of the present invention to which the driving unit form of the above-described second embodiment is applied will be described and described.

However, for convenience of description, arrangement means such as brackets and double-sided tapes for fixing the organic light emitting panel on the PCB substrate, and sealing-related means will be omitted below. In addition, it should be understood that various embodiments of the present invention apply the form of the most efficient driving unit described above.

 7 is a double-sided light emitting organic light emitting display device according to a third embodiment of the present invention.

Referring to FIG. 7, the double-sided organic light emitting display device 80 according to the third exemplary embodiment of the present invention has first and second organic light emitting panels 82 and 92 serving as a main display and a sub display, respectively. Each of the driving units D is fitted to correspond to each other with the PCB substrate 81 inserted therebetween.

In detail, in the first organic light emitting panel 82, a first light emitting part 86 including first and second electrodes and an organic light emitting layer is formed on the first substrate 84, and the first light emitting part 86 is formed. ) Is encapsulated with a first shielding portion 88 for preventing oxidation and deterioration of the first light emitting portion 86, that is, a first shield cap 88a having a gutter 88b in a predetermined region therein.

In addition, a first polarizing plate 89 is formed on the first shield cap 88a for the purpose of preventing the luminous efficiency of the first organic light emitting panel 82 from being lowered due to interference of external light.

The second organic light emitting panel 92 has the same structure as that of the first organic light emitting panel 82 described above. That is, the second light emitting part 96 including the first and second electrodes and the organic light emitting layer is formed on the second substrate 94, and the second light emitting part 96 is oxidized on the second light emitting part 96. And a second shield cap 98a for preventing deterioration, that is, a second shield cap 98a provided with a gutter 98b in a predetermined region therein.

In addition, a second polarizing plate 99 is formed on the second shield cap 98a for the purpose of preventing the luminous efficiency of the second organic light emitting panel 92 from being lowered due to interference of external light.

In view of the second organic light emitting panel 92 serving as a sub display in the structure of the double-sided organic light emitting display device as described above, the hole Hp having the largest size is formed in the PCB substrate. By reducing the depth of the smaller than the total thickness (Hs) of the panel it is possible to achieve the desired object of the present invention.

Hereinafter, since FIGS. 8 to 11 have the same configuration as those of FIG. 7, the same reference numerals are given to the same elements, and descriptions of the arrangement of the components will be omitted, and only the differences in structure will be described.

In addition, since the focus of the description is adapted to the positional relationship between the first and second organic light emitting panels, the driver and unnecessary elements are omitted.

8 is a double-sided organic light emitting display device according to a fourth embodiment of the present invention.

Referring to FIG. 8, in the double-sided organic light emitting display device according to the fourth embodiment of the present invention, the convex portion of the first protective portion 88 of the first organic light emitting panel 82 and the second organic light emitting display The convex portion of the second protective portion 98 of the panel 92 is formed in such a way that a hole penetrating the PCB substrate is formed so as to directly contact with each other.

Therefore, the fourth embodiment is much more effective in reducing the thickness of the entire display device compared with the third embodiment.

9 is a double-sided organic light emitting display device according to a fifth embodiment of the present invention.

Referring to FIG. 9, the same configuration as that of the fourth embodiment is performed, but the first protection part 88 and the second protection part 98 are disposed on the PCB substrate so as to be spaced apart from each other by a predetermined distance and contact each other. It is formed by additionally forming two separate holes.

At this time, the first protective part 88 and the second protective part 98 are asymmetrical because the convex portions are shifted in opposite directions to each other, so that the thickness of the entire display device is increased by the height of the convex portion as compared with the fourth embodiment. Can be reduced.

Therefore, the fifth embodiment is much more effective in reducing the thickness of the entire display device compared with the fourth embodiment.

In the fifth embodiment, the heights of the convex portions of the first protective part 88 and the second protective part 98 are the same, and thus the effect of reducing the thickness by one height of the convex portion has been described. When the heights of the convex portions of the portion 88 and the second protection portion 98 are different, the entire display device is as large as the height of the relatively smaller convex portion among the convex portions of the first protection portion 88 and the second protection portion 98. The thickness reduction effect of is obtained.

10 is a double-sided light emitting organic light emitting display device according to a sixth embodiment of the present invention.

Referring to FIG. 10, the same configuration as that of the fourth embodiment is performed, but the convex portions of the first protective part 88 and the second protective part 98 are separated from each other by a predetermined distance so as to contact each other. One hole is formed.

At this time, the convex portion of the first protective portion 88 is symmetrical, and the convex portion of the second protective portion 98 is asymmetrical to one side compared to the position of the convex portion of the first protective portion 88.

Therefore, the sixth embodiment is more effective in terms of display device thickness reduction than the fourth embodiment, and in comparison with the fifth embodiment, there is an effect of reducing and simplifying process steps, thereby improving yield and the desired object of the present invention. More efficient results can be expected from.

11 is a double-sided light emitting organic light emitting display device according to a seventh embodiment of the present invention.

 Referring to FIG. 11, the same configuration as in the fourth embodiment is performed, but the convexity of the first protective part 88 is modified by modifying the shape of the stepped portions of the first protective part 88 and the second protective part 98 described above. In the form of contacting the recess of the additional second protection part 98, more efficient results can be expected in terms of the desired purpose of the present invention as compared with the fourth embodiment.

In the present invention has been described by showing the position of the driving unit on the PCB substrate of the sub display side, the present invention is not limited to this, the position of each driving unit can be more efficiently arranged as needed.

In addition, in the present invention described above the efficiency of the object of the invention in relation to the thickness and height between the sub-display and the driving unit, the present invention is not limited to this, the driving unit is disposed in the most efficient form regardless of the direction and shape on the PCB substrate It should be understood that the size disposed on the same side on the PCB substrate is the relationship between the largest drive element and the height of the display.

In addition, in the present invention, the first protective part and the second protective part have been described as being in contact with each other in the fourth to seventh embodiments, but the first protective part and the second protective part may not contact each other.

In addition, in the prior art and the present invention did not mention the material of the substrate and the shield cap, the substrate may be glass or plastic, etc., the shield cap may be any one of metal, glass, plastic.

In addition, although the prior art and the present invention described as using a bracket and a double-sided tape as a means for fixing the organic light emitting panel to the PCB substrate, the present invention is not limited thereto.

In the above description of the prior art and the present invention, the organic light emitting display device adopting the organic light emitting layer is applied to the light emitting unit. For example, the present invention is not limited thereto. It should be understood as a possible category of electroluminescent display (ELD).

While the present invention has been described with reference to various embodiments, the scope of the present invention is indicated by the following claims rather than the foregoing description, and all changes derived from the meaning and scope of the claims and their equivalent concepts. Or variations should be construed as being included in the scope of the invention.

As described above, the present invention can improve the structure between the driving unit and the protection unit of the organic light emitting display device and the PCB substrate, thereby increasing the process yield and overcoming the limitations of the existing process, thereby expanding its application range.

Claims (14)

A substrate; A plurality of electroluminescent elements formed on the substrate; A protection unit sealing the plurality of electroluminescent devices on the substrate; A driving unit for driving the plurality of electroluminescent elements; And a PCB substrate having a plurality of holes into which the driving unit is inserted. The method of claim 1, The hole on the PCB substrate is electroluminescent display device, characterized in that formed in the contact surface shape of each of the driving portion at part or all of the position on the PCB substrate corresponding to the position inserted into the drive portion. The method according to claim 1 or 2, The hole on the PCB substrate is characterized in that when the plurality of driving portions having different lengths are inserted into the inside, the height of the protrusion of each of the driving portions inserted therein is the same or lower than the highest height of the protection portion. Light emitting display. The method according to claim 1 or 2, The electroluminescent device includes an organic light emitting layer. The method of claim 3, wherein The electroluminescent device includes an organic light emitting layer. A first electroluminescent panel comprising a first substrate, a plurality of electroluminescent elements formed on the first substrate, and a first protective portion sealing the plurality of electroluminescent elements on the first substrate; A second electroluminescent panel comprising a second substrate, a plurality of electroluminescent elements formed on the second substrate, and a second protective portion sealing the plurality of electroluminescent elements on the second substrate; A first driver for driving the electroluminescent element of the first electroluminescent panel; A second driver for driving the electroluminescent element of the second electroluminescent panel; And a PCB substrate having a plurality of holes into which the first driver and the second driver are inserted. The method of claim 6, The hole on the PCB substrate is formed so that the convex portion of the first protection portion and the convex portion of the second protection portion are in direct contact with each other, or formed so as to be contacted by being spaced apart by a predetermined distance. The method according to claim 6 or 7, The hole on the PCB substrate is formed in the shape of each contact surface of the first driver or the second driver at some or all of the positions on the PCB substrate corresponding to the positions inserted into the first driver and the second driver. Electroluminescent display device characterized in that. The method according to claim 6 or 7, When the holes on the PCB substrate are inserted into the plurality of first driving parts having different lengths or the plurality of second driving parts having different lengths from each other, the heights of the respective protrusions of the first driving parts inserted into the inner parts of the holes are increased. 1 electroluminescent display, wherein the height is equal to or lower than the highest height of the protection portion, and the height of each protrusion of the second drive portion inserted therein is the same or lower than the height of the highest protection portion of the second protection portion. Device. The method of claim 8, When the holes on the PCB substrate are inserted into the plurality of first driving parts having different lengths or the plurality of second driving parts having different lengths from each other, the heights of the respective protrusions of the first driving parts inserted into the inner parts of the holes are increased. 1 electroluminescent display, wherein the height is equal to or lower than the highest height of the protection portion, and the height of each protrusion of the second drive portion inserted therein is the same or lower than the height of the highest protection portion of the second protection portion. Device. The method according to claim 6 or 7, The electroluminescent display of the first electroluminescent panel and the electroluminescent device of the second electroluminescent panel comprise an organic light emitting layer. The method of claim 8, The electroluminescent display of the first electroluminescent panel and the electroluminescent device of the second electroluminescent panel comprise an organic light emitting layer. The method of claim 9, The electroluminescent display of the first electroluminescent panel and the electroluminescent device of the second electroluminescent panel comprise an organic light emitting layer. The method of claim 10, The electroluminescent display of the first electroluminescent panel and the electroluminescent device of the second electroluminescent panel comprise an organic light emitting layer.

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