KR20040003599A - Module of organic electro luminescence panel - Google Patents

Abstract

PURPOSE: A module of an organic electroluminescence panel is provided to reduce the size of module by mounting a driving IC and a control IC on the surface of the organic electroluminescence panel. CONSTITUTION: A module of an organic electroluminescence panel(100) includes a control IC(170), a scan drive IC(110) and a first and a second data drive IC(130,150). The control IC(170) is boned to one side of a top surface of the organic electroluminescence panel(100) for emitting a light generated from an organic electroluminescence layer by the data signal and the scan signal through a substrate. The scan drive IC(110) is bonded to the other side of the top surface of the organic electroluminescence panel(100) facing the control IC(170). The scan drive IC(110) receives the control signal of the control IC(170) and outputs the scan signal. And, the first and the second data drive IC(130,150) are bonded to both sides of the top surface of the organic electroluminescence panel(100) in an orthogonal direction of the control IC(170) and the scan drive IC(110). The first and the second data drive IC(130,150) receive the control signal of the control IC(170) and output the data signals.

Description

Module of organic electroluminescence panel

The present invention relates to a module of an organic electroluminescent panel, and more particularly, it is possible to reduce the size of the module by mounting a driving IC and a control IC on the surface of the organic electroluminescent panel, such as an expensive multi-layer flexible printed circuit (FPC). The present invention relates to a module of an organic electroluminescent panel which can reduce the manufacturing cost of the module by not using additional electrical connection means.

Recently, organic electroluminescent panels have been spotlighted as next-generation flat panel displays (FEDs) with wide viewing angles, high-speed response, and low operating voltages, and display and mobile communication terminals of surface light sources. It can also be used for display.

Basic cross-sectional view of the organic electroluminescent panel is shown in Figure 1,

1. An anode electrode 2 formed on the glass substrate 1 to supply holes by applying a positive voltage,

2. a hole injection layer 3 for supplying holes from the anode electrode 2 to the light emitting layer 5,

3. A hole transport layer 4 for transporting holes supplied from the hole injection layer 3 to the light emitting layer 5 and preventing the loss of electrons not bonded in the light emitting layer 5,

4. The light emitting layer 5 which emits various light according to the property of the material by combining the electron supplied from the cathode electrode 8 and the hole supplied from the anode,

5. an electron transport layer 6 for transporting electrons supplied from the cathode electrode 8 to the light emitting layer 5 and preventing loss of electrons not bonded at the light emitting layer 5;

6. Electron injection layer (7) for injecting electrons from the cathode electrode (8) into the light emitting layer (5),

7. It consists of the cathode electrode 8 which supplies an electron by applying a negative voltage (-).

Here, since the hole injection layer 3, the hole transport layer 4, the light emitting layer 5, the electron transport layer 6 and the electron injection layer 7 is formed as an organic material, it is usually referred to as an organic layer (9).

The organic electroluminescent panel configured as described above has an exciton generated by combining electrons and holes injected from the cathode electrode 8 and the anode electrode 2, respectively, from the excited state to the ground state. The light is emitted through the glass substrate 1 to emit light.

The organic electroluminescent panel is formed in a two-dimensional plane, and a part of the image is displayed on each of the plurality of separated pixels, thereby displaying an image on the entire panel.

FIG. 2 is a schematic diagram showing waveforms applied to a general organic electroluminescent panel. In the organic electroluminescent panel 10, a plurality of organic electroluminescent elements 13 including an anode 12 and a cathode 11 are formed. The anodes 12 of these organic electroluminescent elements 13 are connected to vertical electrode lines, and the cathodes 11 are connected to horizontal electrode lines.

A data signal according to panel display information is applied to the anode 12 of the organic electroluminescent panel 10, and a signal for periodically scanning the panel is applied to the cathode 11. The driving waveforms applied to the anode and the cathode are supplied from the driving IC, respectively.

Accordingly, the organic EL panel is driven as a display only when the data driving IC driving the data electrode, the scan driving IC driving the scan electrode, and the controller IC controlling the data and scan driving ICs are modularized together with the organic EL panel. .

Conventionally, the organic electroluminescent panel is configured by electrically connecting the organic electroluminescent panel, which is separated from each other, and the panel on which the driving IC and the control IC are mounted, using a printed circuit board (CPC) or a chip on film (COF). .

3 is a diagram illustrating a state in which an organic electroluminescent panel according to the prior art is modularized, and includes a cathode input / output terminal 51 formed on the right side of the organic electroluminescent panel 50 in a first flexible printed circuit (FPC) 60. Is electrically connected to the first terminal 81 of the panel 80 on which the driving IC and the control IC are mounted, and the anode input / output terminal 52 formed below the organic electroluminescent panel 50 is connected to the second terminal. The FPC 70 is electrically connected to the second terminal 82 of the module 80 in which the driving IC and the control IC are mounted.

Since the organic electroluminescent module of the prior art electrically connects the organic electroluminescent panel 50 and the module 80 on which the driving IC and the control IC are mounted using FPC, a kind of flexible film, The short circuit of the electrically connected portions leads to a large number of connection errors in which the organic electroluminescent panel is not driven, and the use of expensive FPCs increases the module manufacturing cost.

In addition, since the organic EL panel and the panel on which the driving IC and the control IC are mounted are separated, the size of the module increases.

Accordingly, the present invention has been made to solve the problems described above, by mounting a drive IC and a control IC on the surface of the organic electroluminescent panel can reduce the size of the module, and additional electrical connection means such as expensive FPC SUMMARY OF THE INVENTION An object of the present invention is to provide a module of an organic electroluminescent panel and a method of forming the same, which can reduce the manufacturing cost of the module because it is not used.

A preferred aspect for achieving the above object of the present invention is bonded to one side of the upper surface of the organic electroluminescent panel 100 that receives the data signal and the scan signal and emits light generated in the organic layer through the substrate. A control IC 170;

A scan driving IC (110) bonded to the other upper surface of the organic electroluminescent panel (100) facing the control IC (170), receiving a control signal of the control IC (170), and outputting the scan signal;

Bonded to both sides of an upper surface of the organic electroluminescent panel 100 in a vertical direction with the control IC 170 and the scan driver IC 110 to receive a control signal of the control IC 170, and output the data signal A module of an organic electroluminescent panel is provided, comprising first and second data driver ICs (130,150).

1 is a basic configuration cross-sectional view of a general organic electroluminescent panel.

2 is a schematic diagram showing waveforms applied to a general organic electroluminescent panel.

3 is a diagram illustrating a state in which an organic electroluminescent panel according to the prior art is modularized.

4 is a diagram illustrating a state in which voltage and ground terminals are connected when the organic light emitting panel according to the present invention is modularized.

5 is a view illustrating a state in which control signal terminals are connected when the organic electroluminescent panel module according to the present invention is modularized.

6 is a view illustrating a state in which component connection terminals are connected when the organic light emitting panel module according to the present invention is modularized.

<Description of the symbols for the main parts of the drawings>

1 substrate 2 anode electrode

3: hole injection layer 4: hole transport layer

5: light emitting layer 6: electron transport layer

7: electron injection layer 8: cathode electrode

9: organic layer 10, 50, 100: organic electroluminescent panel

11: cathode 12: anode

51: input and output terminal for the cathode 52: input and output terminal for the anode

60,70: FPC (Flexible Printed Circuit) 90: External I / O Terminal

80: module mounted with drive IC and control IC

110: scan drive IC 120,121,122,123,124,125: part

130,150 data driving IC 170 control IC

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

4 is a view illustrating a state in which voltage and ground terminals are connected when the organic light emitting panel according to the present invention is modularized, and emits light generated in the organic layer through a substrate by receiving a data signal and a scan signal. A control IC 170 bonded to one side of an upper surface of the light emitting panel 100; A scan driving IC (110) bonded to the other upper surface of the organic electroluminescent panel (100) facing the control IC (170), receiving a control signal of the control IC (170), and outputting the scan signal; Bonded to both sides of an upper surface of the organic electroluminescent panel 100 in a vertical direction with the control IC 170 and the scan driver IC 110 to receive a control signal of the control IC 170, and output the data signal And first and second data driver ICs 130 and 150.

In the module configured as described above, an external input / output terminal 90 is formed at an edge of the organic light emitting panel to which the control IC 170 is bonded.

The scan driver IC 110, the first and second data driver ICs 130 and 150, and the external input / output terminals 90 all have high voltage terminals 111a and 111b and a high voltage ground terminal from the outermost to the inner side of each side of one surface thereof. 112a and 112b, logic ground terminals 113a and 113b, and logic voltage terminals 114a and 114b are sequentially formed.

In addition, the control IC 170 has logic ground terminals and logic voltage terminals formed at the outermost to the inner sides of opposite sides of the control IC 170. The logic ground terminals 173a, 173b, 173c, and 173d are formed at the outermost side, and the logic voltage terminals 174a, 174b, 174c, and 174d are formed inside the logic ground terminals 173a, 173b, 173c, and 173d.

Then, the connection relationship of each terminal described above will be described in detail.

1. High voltage terminal

The high voltage terminals 91a of the external input / output terminal 90 are the high voltage terminals 131a, 131b, 131c, and 131d of the first data driver IC 130 and the high voltage terminals 111a and 111b of the scan driver IC 110. , 111c, 111d and the high voltage terminals 151a, 151b, 151c, and 151d of the second data driver IC 150 are sequentially connected to each other, and electrically connected to the other high voltage terminal 91b of the external input / output terminal 90. Connected.

Accordingly, the high voltage terminal surrounds the outer portions of the first and second data driver ICs 130 and 150 and the scan driver IC 110.

2. High voltage ground terminal

The high voltage ground terminal 92a of the external input / output terminal 90 includes the high voltage ground terminals 132a and 132b of the first data driver IC 130 and the high voltage ground terminals 112a and 112b of the scan driver IC 110. And are sequentially connected to the high voltage ground terminals 152a and 152b of the second data driver IC 150 and electrically connected to the other high voltage terminals 92b of the external input / output terminal 90.

3. Logic Ground Terminal

The logic ground terminal 93a of the external input / output terminal 90 includes the logic ground terminals 173a and 173b of the control IC 170, the logic ground terminals 133a and 133b of the first data driver IC 130, and the scan driving IC. Sequentially connected to logic ground terminals 113a and 113b of 110, logic ground terminals 153a and 153b of second data driver IC 150, and other logic ground terminals 173c and 173d of control IC 170, respectively. Then, it is electrically connected to the other logic ground terminal 93b of the external input / output terminal 90.

4. Logic Voltage Terminal

The logic voltage terminal 94a of the external input / output terminal 90 includes the logic voltage terminals 174a and 174b of the control IC 170, the logic voltage terminals 134a and 134b of the first data driver IC 130, and the scan driver IC. Sequentially connected to logic voltage terminals 114a and 114b of 110, logic voltage terminals 154a and 154b of second data driver IC 150, and other logic voltage terminals 174c and 174d of control IC 170, respectively. And is electrically connected to another logic voltage terminal 94b of the external input / output terminal 90.

FIG. 5 is a view illustrating a state in which control signal terminals are connected when the organic light emitting panel module according to the present invention is modularized, and the control signal terminals of the control IC 170 may include the scan driving IC 110 and the first and second parts. The control signal is transmitted to the data driving ICs 130 and 150.

Therefore, the control signal terminals 175a, 175b, and 175c of the control IC 170 are formed in the central region of the side surface of the control IC 170 in the organic electroluminescent panel inward direction. The control signal terminals 115, 135, and 155 of the two data driver ICs 130 and 150 are formed in the central regions of the side surfaces of the scan driver IC 110 and the first and second data driver ICs 130 and 150 in the inward direction of the organic electroluminescent panel. Control signal terminals 175a, 175b, and 175c of the control IC 170 are electrically connected to the control signal terminals 115, 135, and 155 of the scan driver IC 110 and the first and second data driver ICs 130, 150 at the shortest distance, respectively. It is.

FIG. 6 is a view illustrating a state in which component connection terminals are connected when the organic electroluminescent panel module according to the present invention is modularized. Additional components (120, 121, 122, 123, 124, and 125 of FIG. The IC 110, the first and second data driver ICs 130 and 150, and the control IC 170 are disposed between the regions.

In order to electrically connect these additional components, the component connection terminals 116a and 116b are connected between the high voltage terminal and the high voltage ground terminal of the scan driver IC 110 and the first and second data driver ICs 130 and 150 in the description of FIG. 3. And 136a, 136b, 156a, and 156b to be electrically connected to the parts 120, 121, 122, 123, 124, and 125.

Thus, the module of the organic electroluminescent panel according to the present invention forms a module within the panel size, thereby eliminating the need for additional electrical connection means such as expensive FPC.

As described in detail above, the present invention can reduce the size of the module by mounting a driving IC and a control IC on the surface of the organic electroluminescent panel, and does not use additional electrical connection means such as an expensive multilayer FPC, thereby manufacturing the module. There is an effect to reduce.

Although the invention has been described in detail only with respect to specific examples, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.

Claims (4)

A control IC 170 bonded to one side of an upper surface of the organic electroluminescent panel 100 that receives the data signal and the scan signal and emits light generated in the organic layer through the substrate; A scan driving IC (110) bonded to the other upper surface of the organic electroluminescent panel (100) facing the control IC (170), receiving a control signal of the control IC (170), and outputting the scan signal; Bonded to both sides of an upper surface of the organic electroluminescent panel 100 in a vertical direction with the control IC 170 and the scan driver IC 110 to receive a control signal of the control IC 170, and output the data signal A module of an organic electroluminescent panel, comprising first and second data driver ICs (130,150). The method of claim 1, The scan driver IC 110, the first and second data driver ICs 130 and 150, and the external input / output terminals 90 all have high voltage terminals 111a and 111b and a high voltage ground terminal from the outermost to the inner side of each side of one surface thereof. 112a and 112b, logic ground terminals 113a and 113b and logic voltage terminals 114a and 114b are sequentially formed, The control IC 170 has logic ground terminals 173a, 173b, 173c, and 173d and logic voltage terminals 174a, 174b, 174c, and 174d at outermost and inward sides, respectively, on both sides of opposite surfaces. Wherein each of the homogeneous terminals is electrically connected to each other. The method according to claim 1 or 2, In the control IC 170, control signal terminals 175a, 175b, and 175c are further formed in the central region of the side surface of the control IC 170 in the inward direction of the organic electroluminescent panel. In the scan driver IC 110 and the first and second data driver ICs 130 and 150, control signal terminals 115, 135, and 155 may include the scan driver IC 110 and the first and second data driver ICs facing the organic EL panel. 130, 150 is further formed in the central region of the side, The control signal terminals 175a, 175b, and 175c of the control IC 170 are electrically connected to the scan signal IC 110 and the control signal terminals 115, 135, and 155 of the first and second data driver ICs 130 and 150, respectively. A module of an organic electroluminescent panel, characterized in that. The method according to claim 1 or 2, Further components 120, 121, 122, 123, 124, 125 for driving the organic electroluminescent panel are further mounted between the region in which the scan driver IC 110, the first and second data driver ICs 130, 150 and the control IC 170 are disposed. , Component connection terminals 136a, 136b, 116a and 116b electrically connected to the components 120, 121, 122, 123, 124 and 125 between the high voltage terminal and the high voltage ground terminal of the scan driver IC 110 and the first and second data driver ICs 130 and 150. A module of an organic electroluminescent panel, characterized in that further formed.