KR102396377B1 - Organic light emitting display device - Google Patents

Abstract

The present invention discloses an organic light emitting display device. The disclosed organic light emitting display device of the present invention includes a substrate in which a display area and a non-display area are partitioned, and a crack blocking part disposed in the non-display area, wherein the crack blocking part includes a first blocking part having a first blocking pattern; By including a second blocking portion spaced apart from the first blocking portion and having a plurality of second blocking patterns disposed in the first direction and in a second direction perpendicular to the first direction, cracks occurring at the periphery of the display panel are prevented It has the effect of preventing propagation to the display area.

Description

Organic light emitting display device {ORGANIC LIGHT EMITTING DISPLAY DEVICE}

The present invention relates to an organic light emitting display device.

Recently, an organic light emitting display device, which has been in the spotlight as a display device, has advantages such as fast response speed, luminous efficiency, luminance, and viewing angle by using an organic light emitting diode (OLED) that emits light by itself.

In such an organic light emitting display device, subpixels including organic light emitting diodes are arranged in a matrix form, and the brightness of the subpixels selected by a scan signal is controlled according to a gray level of data.

Each sub-pixel disposed on the display panel of the organic light emitting diode display basically includes a driving transistor for driving the organic light emitting diode, a switching transistor for transferring a data voltage to the gate node of the driving transistor, It may include a storage capacitor that maintains a constant voltage for one frame time, and the like.

In addition, since the organic light emitting display device can use a plastic material (PI: Polyimide) as a substrate, there is an advantage that it can be implemented as a thin and flexible display device.

However, there is a disadvantage in that the organic light emitting display device is vulnerable to cracks due to external force during movement or handling. There is a problem of crack propagation.

As described above, the crack propagated to the display area damages elements (transistors, organic light emitting diodes) and signal wirings disposed in the organic light emitting diode display, thereby causing defects.

In particular, in recent years, organic light emitting display devices have reduced the bezel area to widen the display area (narrow bezel). When the bezel area is reduced, the width of the non-display area of the display panel is short, making it more vulnerable to defects due to cracks. Accordingly, there is a need for a technique for improving the problem of cracks propagating to the display area and causing defects in the organic light emitting diode display.

The present invention provides an organic light emitting display device in which cracks generated outside the display panel are prevented from propagating to the display area by disposing a crack blocking part (CBP) along the non-display area (N/A) of the display panel. There is a purpose.

In addition, according to the present invention, a crack blocking unit composed of a plurality of blocking patterns is disposed in the non-display area (N/A) of the display panel to block propagation of cracks, and the elements and signals disposed in the display area (A/A) Another object of the present invention is to provide an organic light emitting diode display in which wiring is protected.

The organic light emitting display device of the present invention for solving the problems of the prior art as described above includes a substrate in which a display area and a non-display area are partitioned, and a crack blocking part disposed in the non-display area, wherein the crack blocking part is a first a first blocking unit having a blocking pattern and a second blocking unit spaced apart from the first blocking unit and having a plurality of second blocking patterns disposed in a first direction and a second direction perpendicular to the first direction By doing so, there is an effect of preventing cracks generated outside the display panel from propagating to the display area.

The organic light emitting display device according to the present invention has the effect of preventing cracks generated outside the display panel from propagating to the display area by arranging the crack blocking portion (CBP) along the non-display area (N/A) of the display panel. there is.

In addition, in the organic light emitting display device according to the present invention, a crack blocking unit composed of a plurality of blocking patterns is disposed in the non-display area (N/A) of the display panel to block propagation of cracks to thereby block the propagation of the crack in the display area (A/A) It has the effect of protecting the elements and signal wiring arranged in the

1 is a schematic system configuration diagram of an organic light emitting diode display according to the present invention.
2 is an equivalent circuit diagram of a sub-pixel of an organic light emitting diode display according to the present invention.
3 is a diagram illustrating a display panel of an organic light emitting display device according to the present invention.
4 is a cross-sectional view taken along line I-I' of FIG. 3 .
5 to 7 are cross-sectional views of display panels according to other exemplary embodiments.
8 is a plan view illustrating a crack blocking unit of the organic light emitting diode display according to the present invention.
9 is an enlarged view of a crack blocking unit disposed in the crack blocking unit of FIG. 8 .
10 to 17 are plan views of crack blocking parts according to another embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative and the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In interpreting the components, it is construed as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between two parts unless 'directly' is used.

In the case of a description of a temporal relationship, for example, when the temporal relationship is described as 'after', 'following', 'after', 'before', etc., 'immediately' or 'directly' Unless ' is used, cases that are not continuous may be included.

Although the first, second, etc. are used to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the spirit of the present invention.

Each feature of the various embodiments of the present invention can be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each of the embodiments may be independently implemented with respect to each other or implemented together in a related relationship. may be

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. And in the drawings, the size and thickness of the device may be exaggerated for convenience. Like reference numerals refer to like elements throughout.

1 is a schematic system configuration diagram of an organic light emitting diode display according to the present invention, and FIG. 2 is an equivalent circuit diagram of sub-pixels of the organic light emitting display device according to the present invention.

1 and 2 , the organic light emitting diode display 100 according to the present invention includes a plurality of data lines DL #1, DL #2, ... , DL in a first direction (eg, a column direction). #4M, M is a natural number greater than or equal to 1), and a plurality of gate lines (GL #1, GL #2, ... , GL #N, N are natural numbers greater than or equal to 1) in the second direction (eg, row direction) is disposed, the display panel 110 having a plurality of sub-pixels SP disposed in a matrix type, and a data driver driving the plurality of data lines DL #1, DL #2, ..., DL #4M 120, a gate driver 130 for driving the plurality of gate lines GL #1, GL #2, ..., GL #N, and a data driver 120 and a gate driver 130 for controlling the and a timing controller (T-CON, 140) and the like.

The data driver 120 drives the plurality of data lines by supplying data voltages to the plurality of data lines DL #1, DL #2, ..., DL #4M.

The gate driver 130 sequentially supplies scan signals to the plurality of gate lines GL #1, GL #2, ... , GL #N, and thereby the plurality of gate lines GL #1, GL #2, ... , GL #N) is driven sequentially.

The timing controller 140 supplies various control signals to the data driver 120 and the gate driver 130 to control the data driver 120 and the gate driver 130 .

The timing controller 140 starts scanning according to the timing implemented in each frame, and converts the input image data input from the outside to match the data signal format used by the data driver 120 to convert the converted image data DATA ) and control the data drive at an appropriate time according to the scan.

The gate driver 130 transmits a scan signal of an on voltage or an off voltage to a plurality of gate lines GL #1, GL #2, ... , GL according to the control of the timing controller 140 . #N) to drive a plurality of gate lines GL #1, GL #2, ..., GL #N.

The gate driver 130 may be positioned on only one side of the display panel 110 as shown in FIG. 1 or, in some cases, on both sides, according to a driving method.

Also, the gate driver 130 may include one or more gate driver integrated circuits.

Each gate driver integrated circuit is connected to a bonding pad of the display panel 110 by a tape automated bonding (TAB) method or a chip-on-glass (COG) method, or a gate in panel (GIP) method. It may be implemented as a type and disposed directly on the display panel 110 , or may be integrated and disposed on the display panel 110 in some cases.

Each gate driver integrated circuit may include a shift register, a level shifter, and the like.

When a specific gate line is opened, the data driver 120 converts the image data DATA received from the timing controller 140 into an analog data voltage to a plurality of data lines DL #1, DL #2, .. . , DL #4M), driving a plurality of data lines (DL #1, DL #2, ... , DL #4M).

The data driver 120 may drive a plurality of data lines DL #1, DL #2, ..., DL #4M including at least one source driver integrated circuit.

Each source driver integrated circuit is connected to a bonding pad of the display panel 110 or connected to the display panel 110 by a tape automated bonding (TAB) method or a chip-on-glass (COG) method. It may be directly disposed or, in some cases, may be integrated and disposed on the display panel 110 .

Each source driver integrated circuit may include a logic unit including a shift register and a latch circuit, a digital analog converter (DAC), an output buffer, and the like, and in some cases, the characteristics ( For example, a sensing unit for sensing characteristics of the sub-pixel may be further included to compensate for the threshold voltage and mobility of the driving transistor, the threshold voltage of the organic light emitting diode, the luminance of the sub-pixel, etc.).

Each source driver integrated circuit may be implemented in a Chip On Film (COF) method. In this case, one end of each source driver integrated circuit is bonded to at least one source printed circuit board, and the other end is bonded to the display panel 110 .

Meanwhile, the timing controller 140 includes a vertical synchronization signal (Vsync), a horizontal synchronization signal (Hsync), an input data enable (DE: Data Enable) signal, a clock signal (CLK), etc. together with the input image data. It receives various timing signals from the outside (eg, host system).

The timing controller 140 converts the input image data input from the outside to match the data signal format used by the data driver 120 and outputs the converted image data, as well as the data driver 120 and the gate driver 130 . ), the data driver 120 and the gate driver 130 ) is output.

For example, the timing controller 140 controls the gate driver 130 , a gate start pulse (GSP), a gate shift clock (GSC), and a gate output enable signal (GOE). : Outputs various gate control signals (GCS: Gate Control Signal) including Gate Output Enable).

Here, the gate start pulse GSP controls the operation start timing of one or more gate driver integrated circuits constituting the gate driver 130 . The gate shift clock GSC is a clock signal commonly input to one or more gate driver integrated circuits, and controls shift timing of a scan signal (gate pulse). The gate output enable signal GOE specifies timing information of one or more gate driver integrated circuits.

In addition, the timing controller 140 controls the data driver 120 , a source start pulse (SSP), a source sampling clock (SSC), and a source output enable signal (SOE: Source). Output Enable) and output various data control signals (DCS: Data Control Signal).

Here, the source start pulse SSP controls the data sampling start timing of one or more source driver integrated circuits constituting the data driver 120 . The source sampling clock SSC is a clock signal that controls sampling timing of data in each of the source driver integrated circuits. The source output enable signal SOE controls the output timing of the data driver 120 .

Referring to FIG. 1 , the timing controller 140 includes a source printed circuit board to which a source driver integrated circuit is bonded and a connection medium such as a flexible flat cable (FFC) or a flexible printed circuit (FPC). It may be disposed on a control printed circuit board connected through the

A power controller (not shown) for supplying various voltages or currents to the display panel 110 , the data driver 120 , the gate driver 130 , or controlling various voltages or currents to be supplied is further disposed on the control printed circuit board can be Such a power controller is also called a power management integrated circuit (Power Management IC).

The above-mentioned source printed circuit board and control printed circuit board may be a single printed circuit board.

In the organic light emitting diode display 100 according to the present invention, each sub-pixel SP disposed on the display panel 110 includes an organic light emitting diode (OLED), two or more transistors, at least one capacitor, and the like. It may consist of circuit elements.

The type and number of circuit elements constituting each sub-pixel may be variously determined according to a provided function, a design method, and the like.

Each sub-pixel in the display panel 110 according to the present invention has a characteristic value (eg, threshold voltage, etc.) of an organic light emitting diode (OLED), a characteristic value (eg, threshold voltage, etc.) of a driving transistor driving the organic light emitting diode (OLED); It may have a circuit structure for compensating for sub-pixel characteristic values such as mobility, etc.).

Referring to FIG. 2 , each subpixel SP is connected to one data line DL and receives only one scan signal SCAN through one gate line GL.

Each of these sub-pixels includes an organic light emitting diode (OLED), a driving transistor (DT), a first transistor T1, a second transistor T2, a storage capacitor Cst, and the like. includes As described above, since each subpixel includes three transistors DT, T1, and T2 and one storage capacitor Cst, each subpixel is said to have a 3T (Transistor) 1C (Capacitor) structure.

The driving transistor DT in each sub-pixel receives a driving voltage EVDD supplied from a driving voltage line (DVL), and the voltage of the gate node N2 applied through the second transistor T2. It is a transistor that is controlled by (data voltage) to drive an organic light emitting diode (OLED). EVSS shown in the figure is a base voltage.

The driving transistor DT has a first node N1 , a second node N2 , and a third node N3 , and is connected to the first transistor T1 as the first node N1 , and the second The node N2 is connected to the second transistor T2 and the third node N3 is supplied with the driving voltage EVDD.

Here, as an example, the first node of the driving transistor DT is a source node (also referred to as a 'source electrode'), and the second node is a gate node (also referred to as a 'gate electrode'), and the The third node N3 may be a drain node (also referred to as a 'drain electrode'). The first node, the second node, and the third node of the driving transistor DT may be changed according to the type change of the transistor, the circuit change, or the like.

In addition, the first transistor T1 is controlled by the scan signal SCAN supplied from the gate line GL, and a reference voltage line (RVL: Reference Voltage Line) that supplies a reference voltage (Vref) or It is connected between a connection pattern CP connected to the reference voltage line RVL and the first node N1 of the driving transistor DT. This first transistor T1 is also referred to as a “sensor transistor”.

In addition, the second transistor T2 is controlled by the scan signal SCAN commonly supplied from the gate line GL and is connected between the corresponding data line DL and the second node N2 of the driving transistor DT. do. This second transistor T2 is also referred to as a “switching transistor”.

Also, the storage capacitor Cst may be connected between the first node N1 and the second node N2 of the driving transistor DT to maintain the data voltage for one frame.

As mentioned above, the first transistor T1 and the second transistor T2 are controlled by one scan signal supplied through one and the same gate line (common gate line). As described above, since each sub-pixel uses one scan signal, it is said that each sub-pixel has a basic sub-pixel structure of “3T1C-based 1-scan structure” in the embodiment of the present invention.

However, since this is not fixed, a gate line and a sensing line may be individually connected to the first transistor T1 and the second transistor T2, respectively, and this structure is called a “3T1C-based two-scan structure”. .

Meanwhile, in the subpixel structure of the organic light emitting diode display 100 according to the present invention, in addition to the “basic subpixel structure (3T1C-based 1-scan structure)” described with reference to FIG. 2 , each subpixel has a data line DL. , a “signal line connection structure” related to connection with various signal lines such as a gate line GL, a driving voltage line DVL, and a reference voltage line RVL.

Here, the signal line includes a data line DL for supplying a data voltage to each sub-pixel and a gate line GL for supplying a scan signal, as well as a reference voltage Vref for supplying each sub-pixel. It further includes a reference voltage line RVL, a driving voltage line DVL for supplying the driving voltage EVDD, and the like.

The above-mentioned reference voltage line RVL and driving voltage line DVL are formed parallel to the data line DL, and the number of each may be equal to or smaller than the number of data lines.

If the number of reference voltage lines RVL and the number of driving voltage lines DVL are less than the number of data lines DL, some sub-pixels may be directly connected to the driving voltage line DVL and the reference voltage line RVL. and some other sub-pixels are not directly connected to the driving voltage line DVL and the reference voltage line RVL, but may be respectively connected to the driving voltage line DVL and the reference voltage line RVL through the connection pattern CP. .

In addition, the sub-pixels disposed in the organic light emitting display device 100 of the present invention are one unit in the order of a red (R) sub-pixel, a white (W) sub-pixel, a blue (B) sub-pixel, and a green (G) sub-pixel. pixel can be achieved. However, since this is not fixed, the order of the red (R) subpixels, white (W) subpixels, blue (B) subpixels, and green (G) subpixels may be variously changed and arranged.

In addition, in the present specification and drawings, the transistors DT, T1, and T2 are illustrated and described as being of the N type, but this is only for convenience of description, and according to a circuit design change, the transistors DT, T1, and T2 ) may be all changed to P-type, or some of the transistors DT, T1, and T2 may be implemented as N-type and others as P-type. In addition, the organic light emitting diode (OLED) may be changed to an inverted type.

In addition, the transistors DT, T1, and T2 described herein are also referred to as thin film transistors (TFTs).

Each of the sub-pixels SP includes an emission area (EA) in which the organic light emitting diode (OLED) is disposed and a non-emission area (NEA). Also, the non-emission area NEA includes an area in which the reference voltage line RVL, the driving voltage line DVL, and the data lines DL are disposed.

3 is a view showing a display panel of an organic light emitting display device according to the present invention, and FIG. 4 is a cross-sectional view taken along line I-I' of FIG. 3 .

Referring to FIGS. 3 and 4 together with FIG. 1 , in the display panel 110 of the organic light emitting diode display 100 of the present invention, a display area A/A in which sub-pixels SP are arranged in a matrix form: active area) and a non-display area (N/A) disposed around the display area A/A. In the non-display area N/A, pads of the reference voltage line RVL, the driving voltage line DVL, the data lines DL, and the gate lines GL, and the link lines Link connected to these lines are provided in the non-display area N/A. line) can be arranged.

In addition, GIP circuits constituting the gate driver may be disposed in the non-display area N/A.

In addition, a crack blocking part CBP is disposed in the non-display area N/A of the display panel 110 of the present invention. The crack blocking part CBP is formed between the seal pattern (not shown) area from the edge boundary of the display area (A/A) or the seal pattern (not shown) area from the edge boundary of the display area (A/A). It may be disposed in some area of

Referring to FIG. 4 , a driving transistor DT and a color filter CF are formed on a substrate 201 in which the display area A/A, the non-display area N/A, and the crack blocking part CBP area are partitioned. , a crack blocking portion CBP composed of the first and second blocking portions BP1 and BP2 is disposed.

In addition, an organic light emitting diode OLED 214 is disposed on the driving transistor DT.

The driving transistor DT, the color filter CF, and the organic light emitting diode 214 are disposed in the subpixel SP in the display area A/A. In particular, the organic light emitting diode 214 and the color filter CF are disposed in an area corresponding to the emission area EA of the subpixel SP, and the driving transistor DT is disposed in the non-emission area NEA. .

In addition, first and second blocking portions BP1 and BP2 are disposed in the crack blocking portion CBP region, and the first blocking portion BP1 includes a first blocking pattern 316a, and the second The blocking part BP2 includes a plurality of second blocking patterns 316b.

More specifically, in the region where the driving transistor DT is formed on the substrate 201 , the active layer 204 , the gate pattern 203 , the gate electrode 205 , the interlayer insulating layer 224 , and the drain and source electrodes 207a and 207b are formed. this is placed Here, the drain electrode 207a corresponds to the third node N3 drawn from the driving voltage line DVL of FIG. 2 , and the source electrode 207b is the first electrode 211 of the organic light emitting diode 214 . ) corresponds to the second node N2 connected to the .

In addition, the active layer 204 is made of a semiconductor layer, the central portion of which is composed of an active region 204a forming a channel, and drain and source regions 204b and 204c doped with a high concentration of impurities on both sides of the active region 204a. do.

The semiconductor layer may be formed of a silicon-based material or an oxide semiconductor material containing zinc (Zn), for example, zinc oxide (ZnO), indium gallium zinc oxide (InGaZnO ₄ ), etc. may be used, but limited thereto it is not going to be

Although the organic light emitting display device of the present invention may be a top emission type or a bottom emission type, a bottom emission type organic light emitting display device will be described herein.

The organic light emitting diode 214 is disposed on the passivation layer 206 and the planarization layer 208 stacked on the driving transistor DT, the first electrode 211 formed of a transparent conductive material, and the organic light emitting layer 212 . ) and a second electrode 213 . A first passivation layer 240 , an organic film 241 including a polymer, a second passivation layer 242 , an adhesive layer 243 , and a protective film 244 are stacked on the organic light emitting diode 214 .

Although not described in the drawings, reference numeral 216 denotes a bank layer, and the first electrode 211 of the organic light emitting diode 214 is disposed in the sub-pixel region in which the bank layer 216 is open, respectively.

In addition, the organic light emitting layer 212 of the organic light emitting diode 214 may be a light emitting layer emitting white (W) light, and the corresponding sub-pixel is a red (R), green (G) or blue (B) sub-pixel. When used, the color filter CF may be disposed between the organic light emitting diode 214 and the corresponding interlayer insulating layer 224 and the passivation layer 206 or between the passivation layer 206 and the planarization layer 208 . The color filter CF is composed of a red (R), green (G), or blue (B) color filter, and a transparent planarization film 208 is formed without disposing a separate color filter in the white (W) sub-pixel. Use as a white (W) color filter.

This is because the planarization layer 208 , the passivation layer 206 , and the interlayer insulating layer 224 stacked on the white (W) sub-pixel area are formed of a transparent material.

The first electrode 211 of the organic light emitting diode 214 may be formed of a metal, an alloy thereof, or a combination of a metal and an oxide metal. Since it is a bottom light emitting method, the metal is preferably a transparent conductive material. The first electrode 211 may be formed of one of ITO, IZO, ITO/APC/ITO, AlNd/ITO, Ag/ITO, or ITO/APC/ITO.

The organic light emitting layer 212 includes a hole injection layer, a hole transport layer, an emitting material layer, an electron transport layer, and an electron injection layer to increase luminous efficiency. It can be composed of multiple layers of injection layers).

In addition, the hole transport layer (HTL) may further include an electron blocking layer (EBL), the electron transport layer (ETL) may be formed using a low molecular weight material such as PBD, TAZ, Alq3, BAlq, TPBI, Bepp2. there is.

The second electrode 213 may be formed of an opaque material with high reflectivity, such as aluminum (Al), silver (Ag), or an alloy thereof.

A driving circuit wiring 219 for applying a scan signal, a driving voltage, a reference voltage, etc. is disposed in the non-display area N/A, and an organic light emitting diode is disposed on the bank layer 216 corresponding to the driving circuit wiring 219 . An auxiliary electrode 233 extending from the second electrode 213 of the diode 214 is disposed.

The auxiliary electrode 233 is electrically connected to the ground voltage electrode 230 disposed in the non-display area N/A, and provides a ground voltage EVSS to the second electrode 213 of the organic light emitting diode 214 . to supply

In addition, in the organic light emitting display device 100 of the present invention, when a crack is generated by stress and an external force (pressure) applied to the edge of the display panel 110 , the crack is formed in the display area ( A/A) and includes a crack blocking unit (CBP) to prevent damage to devices (such as organic light emitting diodes, transistors and capacitors) or signal wirings.

The crack blocking portion CBP includes a first blocking portion BP1 and a second blocking portion BP2 , and the first blocking portion BP1 includes a first blocking pattern 316a. The first blocking pattern 316a may be disposed in a straight line shape corresponding to the four side surfaces of the display area A/A, and may be formed in a non-continuous structure. For example, a plurality of first blocking patterns 316a may be formed to correspond to the four side surfaces of the display area A/A, or a plurality of first blocking patterns 316a may be formed to correspond to each side surface of the display area A/A. 316a) may be formed in a discontinuous shape (a dotted line shape). Also, the first blocking pattern 316a may be formed in a structure in which all four linear blocking patterns disposed to correspond to the four side surfaces of the display area A/A are connected. Accordingly, the first blocking pattern 316a may be formed in the form of a continuous closed loop along the circumference of the non-display area N/A.

Also, the second blocking portion BP2 includes a plurality of second blocking patterns 316b and is disposed outside the first blocking portion BP2 in a direction opposite to the display area A/A. The planar structure of the second blocking patterns 316b will be described in detail with reference to FIGS. 8 to 17 .

A height (thickness, H) of the first and second blocking patterns 316a and 316b may be in a range of 1 to 5 μm. Although the first and second blocking patterns 316a and 316b have the same height H in the drawing, since this is not fixed, the first and second blocking patterns 316a and 316b may have different heights or The heights of the plurality of second blocking patterns 316b constituting the second blocking portion BP2 may be different from each other.

Also, the first and second blocking portions BP1 and BP2 may be formed together when the bank layer 216 formed in the display area A/A is formed. Accordingly, the first and second blocking patterns 316a and 316b of the first and second blocking portions BP1 and BP2 may be formed of the same material as the bank layer 216 .

The first and second blocking patterns 316a and 316b may be formed of the same polyimide (PI) or photoacryl as that of the substrate 201, and are made of a transparent material in the non-display area (N/A). Since it is formed of , image quality is not deteriorated due to the first and second blocking patterns 316a and 316b.

As described above, when the first and second blocking patterns 316a and 316b are formed when the bank layer 216 is formed, cracks generated in the display panel 110 are displayed without performing an additional process. Propagation to the area A/A can be prevented.

Also, as in the present invention, when the crack blocking portion CBP is formed of a plurality of blocking patterns, there is an effect of not only preventing cracks of the display panel 110 but also enhancing adhesion to the adhesive layer 243 .

In addition, as in the present invention, if the crack blocking portion (CBP) is formed with a plurality of blocking patterns and the height (H, thickness) is constant, an organic light emitting display device having a uniform cell gap can be realized. there is.

Accordingly, first and second passivation layers 240 and 242 are stacked on the first and second blocking portions BP1 and BP2. However, since this is not fixed, the first passivation layer 240 corresponding to the crack blocking portion CBP is removed, and only the second passivation layer 242 is stacked on the first and second blocking portions BP1 and BP2. Alternatively, the first and second passivation layers in the crack blocking portion CBP region may be removed so that the first and second blocking portions BP1 and BP2 are in direct contact with the adhesive layer 243 . In addition, the first blocking portion BP1 is covered by the first and second passivation layers 240 and 242 , and the second blocking portion BP2 is formed from the first and second passivation layers 240 and 242 removed. structure can be formed.

As such, the structures of the first and second passivation layers 240 and 242 stacked on the first and second blocking parts BP1 and BP2 may be equally applied to other embodiments of the present invention described below. can

5 to 7 are cross-sectional views of display panels according to other exemplary embodiments.

Hereinafter, the same reference numerals as those described with reference to FIG. 4 among other embodiments of the present invention refer to the same constituent parts, and thus, a description will be given mainly of the distinct crack blocking parts.

Referring to FIG. 5 , the crack blocking portion CBP includes first and second blocking portions BP1 and BP2, and the first and second blocking portions BP1 and BP2 each include a first blocking color pattern ( CFP1) and second blocking color patterns CFP2.

The first and second blocking color patterns CFP1 and CFP2 are formed together when the color filter CF disposed in units of sub-pixels of the display area A/A is formed. Accordingly, the first and second blocking color patterns CFP1 and CFP2 may be formed of any one of red (R), blue (B), or green (G) color resin.

In addition, the first and second blocking color patterns CFP1 and CFP2 may be partially formed of red (R) color resin, and partially formed of blue (B) and green (G) color resin. In addition, the first and second blocking color patterns CFP1 and CFP2 may be formed in a structure in which red (R), blue (B), and green (G) color resins are stacked.

If the thickness of the first and second blocking color patterns CFP1 and CFP2 is thicker than that of the color filter CF, a halftone mask or a diffraction mask process is applied to form the color filter CF and The thicknesses of the first and second blocking color patterns CFP1 and CFP2 may be different from each other.

Since the heights of the first and second blocking color patterns CFP1 and CFP2 are the same as the first and second blocking patterns 316a and 316b described with reference to FIG. 4 , a detailed description thereof will be omitted.

In this way, when the first and second blocking color patterns CFP1 and CFP2 are formed during the formation of the color filter CF, cracks generated in the display panel 110 are formed in the display area A without a separate additional process. /A) to prevent propagation.

In addition, as in the present invention, when the crack blocking portion CBP is formed of a plurality of blocking color patterns, there is an effect of not only preventing cracks of the display panel 110 but also enhancing adhesion to the adhesive layer 243 . .

In addition, as in the present invention, if the crack blocking portion (CBP) is formed with a plurality of blocking color patterns and the height (thickness) is uniformly adjusted, an organic light emitting display device having a uniform cell gap can be realized. there is.

Referring to FIG. 6 , the crack blocking portion CBP includes first and second blocking portions BP1 and BP2 , and the first and second blocking portions BP1 and BP2 are respectively formed by a first spacer pattern SP1 . ) and second spacer patterns SP2.

The first and second spacer patterns SP1 and SP2 may be formed by applying a separate organic material and a mask process.

Also, the first and second spacer patterns SP1 and SP2 may have different heights (thickness) by applying a halftone mask process or a diffraction mask process. Since the heights of the first and second spacer patterns SP1 and SP2 are the same as those of the first and second blocking patterns 316a and 316b described with reference to FIG. 4 , a detailed description thereof will be omitted.

As such, when the first and second spacer patterns SP1 and SP2 are formed in the crack blocking portion CBP, cracks generated in the display panel 110 are propagated to the display area A/A. it can be prevented

Also, as in the present invention, when the crack blocking portion CBP is formed of a plurality of spacer patterns, there is an effect of not only preventing cracks of the display panel 110 , but also enhancing adhesion to the adhesive layer 243 .

In addition, when the plurality of spacer patterns of the crack blocking portion CBP are formed to have a constant height (thickness), an organic light emitting diode display having a uniform cell gap can be realized.

Referring to FIG. 7 , the crack blocking portion CBP includes first and second blocking portions BP1 and BP2, and the first and second blocking portions BP1 and BP2 are first to third blocking portions, respectively. patterns 416a, 416b, 416c.

Although the figure shows that the first blocking part BP1 is composed of the first blocking pattern 416a and the second blocking unit BP2 is composed of the second and third blocking patterns 416b and 416c, this It is not fixed. Accordingly, both the first blocking unit BP1 and the second blocking unit BP2 may be implemented with a plurality of blocking patterns.

The first to third blocking patterns 416a , 416b , and 416c may have different widths W1 , W2 , and W3 . Also, the height (thickness) of the first to third blocking patterns 416a , 416b , and 416c may be different from each other.

The first to third blocking patterns 416a, 416b, and 416c are each formed according to an independent mask process, or a single mask using a diffraction mask or a halftone mask including at least three regions with different exposure amounts. It can be formed by the process.

As described above, when the first and second blocking portions BP1 and BP2 including the first to third blocking patterns 416a , 416b , and 416c are formed in the crack blocking portion CBP, it is generated in the display panel 110 . It is possible to prevent a crack from being propagated to the display area A/A. The principle that crack propagation is blocked will be described in detail with reference to FIGS. 8 and 9 .

Also, as in the present invention, when the crack blocking portion CBP is formed of a plurality of first to third blocking patterns 416a, 416b, and 416c, the display panel 110 is not cracked and the adhesive layer 243 is formed. It has the effect of strengthening the adhesion with the

Below is a plan view of the blocking patterns of the crack blocking portion (CBP) described above. Accordingly, the description of each blocking pattern constituting the crack blocking portion CBP is equally applied to the blocking patterns, blocking color patterns, and spacer patterns described with reference to FIGS. 4 to 7 .

8 is a plan view illustrating a crack blocking unit of the organic light emitting display device according to the present invention, and FIG. 9 is an enlarged view of the crack blocking unit disposed in the crack blocking unit of FIG. 8 .

Referring to FIGS. 8 and 9 together with FIG. 3 , a crack blocking part CBP is disposed along the circumference of the display panel 110 of the organic light emitting diode display 100 of the present invention, and the crack blocking part CBP. includes first and second blocking units BP1 and BP2. The first blocking part BP1 is adjacent to the display area A/A of the display panel 110 , and the second blocking part BP2 is adjacent to the first direction, that is, the outside direction of the display panel 110 . there is. Here, the second direction is defined as a direction perpendicular to the first direction.

As described with reference to FIG. 3 , the first blocking portion BP1 may be formed of a plurality of first blocking patterns P1 that correspond to the four side surfaces of the display area A/A and are formed non-continuously. Also, the first blocking part BP1 may be formed in a closed loop structure in which one first blocking pattern P1 is continuous along the non-display area N/A. In addition, since this is not fixed, it may be discontinuously formed along the non-display area N/A of the display panel 110 or a plurality of first blocking patterns having a closed loop structure may be formed.

In addition, in the second blocking part BP2, a plurality of second blocking patterns P2 are disposed in a matrix form. More specifically, the planar structure of the plurality of second blocking patterns P2 may be formed in a square structure. However, since it is not fixed, it may be formed in a square, a square, a rectangle and a triangle, and may be formed in a mixed structure thereof.

In particular, the plurality of second blocking patterns P2 constituting the second blocking portion BP2 of the present invention are arranged in a structure of a plurality of blocking pattern columns in a direction parallel to the second direction, and in the first direction The second blocking patterns P2 disposed in each blocking pattern column and the second blocking patterns P2 disposed in an adjacent blocking pattern column are disposed to partially overlap each other.

Here, the distance between the blocking pattern columns of the second blocking patterns P2 constituting the second blocking portion BP2 may be set to 1 to 5 μm.

As shown in the drawing, with respect to the second blocking patterns P2 constituting the second blocking portion BP2, a pair of adjacent second blocking pattern columns in an arbitrary i-th column (i is a natural number equal to or greater than 2) Assuming that the blocking patterns are Pin and Pi(n-1) (n is a natural number greater than or equal to 2), and the second blocking pattern of the i-1th column adjacent to this is P(i-1)m (m is a natural number greater than or equal to 2), In the first direction, the space between the second blocking patterns of Pin and Pi(n-1) and the second blocking pattern of P(i-1)m partially overlap each other.

That is, in the first direction, portions (top and bottom portions) of the second blocking pattern of P(i-1)m are disposed to overlap the second blocking patterns of Pin and Pi(n-1), respectively.

This is because, when a crack is generated at the periphery of the display panel 110 , it propagates to the second blocking patterns P2 disposed at the outermost portion of the second blocking unit BP2 , and then propagates to the second blocking pattern column adjacent to the second blocking pattern P2 . This is because cracks are blocked by the blocking patterns P2 to block propagation of cracks to the display area.

The second blocking pattern P2 has a horizontal and vertical length of a and b, respectively. When a and b are the same, the second blocking pattern P2 has a square planar structure. The lengths of a and b of the second blocking pattern P2 may be different from each other, and may be set in the range of 1 to 5 μm, respectively. However, since this is not fixed, it may be determined in the range of 5 μm or more in some cases.

For example, as it progresses from the second blocking pattern P2 disposed on the outer side of the display panel 110 in the direction of the first blocking portion BP1 , the planar area (eg, square area) of the second blocking patterns P2 is increased. It may decrease or increase sequentially. As such, when the planar areas of the second blocking patterns P2 are different, it may be set at 5 μm or more.

Referring to FIG. 9 , when a crack occurs outside the display panel 110 , it can be seen that the crack propagation path crack is lengthened by the arrangement structure of the second blocking patterns P2 described above. That is, cracks passing through a random blocking pattern row are blocked by the second blocking pattern P2 of the adjacent blocking pattern row, and then bypass the second blocking pattern P2 and move to another adjacent blocking pattern row, so the cracks propagate It is difficult to prevent damage to elements and signal wirings in the display area.

10 to 17 are plan views of crack blocking parts according to another embodiment of the present invention.

The blocking patterns of the crack blocking part shown and described herein may have a cross-sectional structure of the blocking patterns, blocking color patterns, and spacer patterns described with reference to FIGS. 4 to 7 . That is, although referred to as a blocking pattern for convenience of description, the blocking pattern may be the blocking pattern of FIGS. 4 and 7 , the blocking color pattern of FIG. 5 , or the spacer pattern of FIG. 6 .

In addition, the design method of the first blocking pattern P1 of the first blocking unit BP1 and the second blocking patterns of the second blocking unit BP2 described in FIGS. 8 and 9 is the first blocking unit ( The same applies to BP1) and the second blocking unit BP2.

Referring to FIG. 10 together with FIG. 3 , a crack blocking part CBP is disposed along the circumference of the display panel 110 of the organic light emitting diode display 100 of the present invention, and the crack blocking part CBP is a first to fifth blocking units BP1, BP2, BP3, BP4, and BP5.

The first blocking part BP1 is disposed in the non-display area N/A adjacent to the display area A/A of the display panel 110 , and the second to fifth blocking parts BP2, BP3, BP4, BP5) are sequentially arranged from the first blocking part BP1 to the outer direction (two directions) of the display panel 110 .

The first, third, and fifth blocking parts BP1, BP3, and BP5 are configured in a single blocking pattern, like the first blocking pattern P1 of the first blocking part BP1 described in FIG. 8 , It has a discontinuous structure or a continuous closed-loop structure along the display area N/A. However, since this is not fixed, it may be formed as a plurality of consecutive first blocking patterns along the non-display area N/B of the display panel 110 . The plurality of first blocking patterns may be disposed parallel to each other.

The second and fourth blocking parts BP2 and BP4 may include a plurality of second blocking patterns P2 described with reference to FIGS. 8 and 9 . Since the detailed arrangement structure of the plurality of second blocking patterns P2 is the same as that described with reference to FIG. 9 , a description thereof will be omitted.

In addition, although the first to fifth blocking parts BP1 to BP5 are illustrated in FIG. 10 , since this is not fixed, the first blocking part BP1 and the second blocking part BP2 are used as a pair and at least 3 pairs or more can be placed That is, various number of blocking units may be disposed according to the degree of space margin of the non-display area (N/A) of the display panel 110 .

In addition, as shown in FIG. 10 , when the first blocking parts BP1 including the single first blocking pattern P1 and the second blocking parts BP2 including the plurality of second blocking patterns P2 are alternately arranged , it is preferable that the second blocking portion BP2 including the plurality of second blocking patterns P2 is positioned in the outermost region of the display panel 110 . This is because, since a large stress or force is applied to the region adjacent to the point where the crack is generated, the degree to which the plurality of second blocking patterns P2 cancel the propagation of the crack is greater than that of a single first blocking pattern.

Referring to FIG. 11 , the crack blocking part CBP disposed along the non-display area N/A of the display panel 110 of the organic light emitting diode display 100 of the present invention is the first blocking part shown in FIG. 8 . In the structure of (BP1) and the second blocking part (BP2), the first auxiliary blocking part CP1 is disposed between the first blocking part BP1 and the second blocking parts BP1 and BP2, and the second blocking part ( BP2), a second auxiliary blocking unit (CP2) was disposed on the outside.

The structures of the blocking patterns of the first and second blocking units BP1 and BP2 are the same as those of FIGS. 8 and 9 , but the structures of the first and second auxiliary blocking units CP1 and CP2 are similar to those of the first blocking units BP1. ) is formed as a non-continuous third blocking pattern P3 parallel to the blocking pattern.

For example, as shown in the drawing, the third blocking pattern P3 has a vertical length c and a horizontal length d, and has a rectangular structure in which the vertical length c is longer than the horizontal length d. . Accordingly, a plurality of third blocking patterns P3 are discontinuously disposed on the first and second auxiliary blocking portions CP1 and CP2.

The vertical length c of the third blocking pattern P3 is preferably greater than the vertical (a) and horizontal (b) lengths of the second blocking patterns P2 of the adjacent second blocking portion BP2.

Also, similar to the second blocking patterns P2 of the second blocking portion BP2 described with reference to FIG. 9 , the third blocking patterns P3 are disposed to cross each other with the adjacent third blocking patterns P3 .

That is, after the third blocking patterns P3 of the first and second auxiliary blocking portions CP1 and CP2 pass between the third blocking patterns P3, they are cracked by the adjacent third blocking patterns P3. It is arranged to block radio waves.

In the structure of the crack blocking part CBP of FIG. 12 , at least one third auxiliary blocking part CP3 is disposed between the second blocking patterns P2 constituting the second blocking part BP2 in FIG. 11 .

The third auxiliary blocking unit CP3 has the same structure as the third blocking patterns P3 of the second auxiliary blocking unit CP2, and unlike the first and second auxiliary blocking units CP1 and CP2, a single unit Arranged in a block pattern column.

In FIG. 12 , the third blocking patterns P3 of the third auxiliary blocking unit CP2 are disposed between the plurality of second blocking patterns P2 constituting the second blocking unit BP2 to block the propagation of cracks. properties were improved. In particular, the blocking characteristic of crack propagation propagating in the first direction is improved.

The crack blocking part CBP according to the present invention of FIG. 13 includes the first blocking part BP1 and the second blocking part BP2 shown in FIG. 8, and additionally a second blocking part of the second blocking part BP2. and a fourth auxiliary blocking part CP4 surrounding at least one of the patterns P2 .

The fourth auxiliary blocking portion CP4 is formed of fourth blocking patterns P4 having a concave-convex structure with one side open, and inside the fourth blocking pattern P4 is the second blocking portion BP2. At least one or more blocking patterns P2 are disposed.

In FIG. 13 , when a crack occurs in one direction and the crack progresses in the display area A/A direction, as in FIGS. 8 and 9 , the second blocking patterns ( BP2) of the second blocking unit BP2 ( crack progress is blocked by P2). In addition, in another embodiment of the present invention, when the crack proceeds in another direction while passing through the second blocking patterns P2, the fourth auxiliary blocking unit CP4 is blocked.

In particular, the overall propagation direction of the crack is the display area A/A direction of the display panel 110 in which cracks do not occur outside the display panel 110 , but in the local area in which the crack blocking part CBP is disposed, it is up and down. Cracks may propagate in the left and right directions.

Accordingly, when the fourth auxiliary blocking part CP4 having a predetermined bending structure is disposed between the second blocking patterns P2 as shown in FIG. 13 , not only blocking cracks traveling in the display area A/A direction but also the upper and lower sides There is an effect of preventing cracks from propagating in the direction (the first direction or the other direction).

Also, referring to FIG. 14 , in the crack blocking part CBP according to another embodiment of the present invention, the first and second blocking parts BP1 and BP2 shown in FIG. 8 are disposed, and the second blocking part A fifth auxiliary blocking part CP5 composed of the third blocking patterns P3 described above is disposed outside the BP2.

In the embodiment, by arranging a plurality of long blocking patterns on the outside of the display panel 110 , cracks are substantially removed from the outside of the display panel 110 . Cracks that have passed through the fifth auxiliary blocking unit CP5 have reduced crack strength (strength) and crack quantity in the second blocking unit BP2, so that crack propagation can be blocked more efficiently.

15 to 17 , the crack blocking unit CBP includes first and second blocking units BP1 and BP2, and the second blocking unit BP2 is a fourth blocking pattern having a half arc structure. It may be formed of the fields P4, the fifth blocking patterns P5 having a donut structure, or the sixth blocking patterns P6 having a lattice structure. The arrangement structure of the fourth to sixth blocking patterns P4, P5, and P6 preferably partially overlaps the blocking patterns disposed in adjacent blocking patterns columns in the first direction, as described with reference to FIGS. 8 and 9 . Do.

Referring to FIG. 15 , the fourth blocking patterns P4 having a semi-arc structure include a pair of fourth blocking patterns P4 disposed in an arbitrary blocking pattern column in the first direction and a fourth blocking pattern disposed in an adjacent blocking pattern column in the first direction. It can be seen that the blocking pattern P4 is overlapped with the upper and lower sides. In FIGS. 16 and 17 , the fifth blocking patterns P5 and the sixth blocking patterns P6 of the donut structure are also overlapped in the same shape. In addition, the blocking patterns P4 , P5 , and P6 of the second blocking part BP2 shown in FIGS. 15 to 17 may be modified and applied in the embodiment shown in FIGS. 10 to 14 .

As described above, in the organic light emitting display device according to the present invention, cracks generated outside the display panel are prevented from propagating to the display area by arranging the crack blocking portion CBP along the non-display area N/A of the display panel. There is one effect.

In addition, in the organic light emitting display device according to the present invention, a crack blocking unit composed of a plurality of blocking patterns is disposed in the non-display area (N/A) of the display panel to block propagation of cracks to thereby block the propagation of cracks in the display area (A/A) It has the effect of protecting the elements and signal wiring arranged in the

The above description and the accompanying drawings are merely illustrative of the technical spirit of the present invention, and those of ordinary skill in the art to which the present invention pertains can combine configurations within a range that does not depart from the essential characteristics of the present invention. , various modifications and variations such as separation, substitution and alteration will be possible. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

100: organic light emitting display device
110: display panel
120: data driver
130: gate driver
140: timing controller

Claims (10)

a substrate in which a display area and a non-display area are partitioned; and
and a crack blocking part disposed in the non-display area;
The crack blocking unit may include: a first blocking unit having a first blocking pattern disposed adjacent to the display area;
a second blocking part disposed to be spaced apart from the first blocking part in a first direction and having a plurality of second blocking patterns aligned in a second direction perpendicular to the first direction;
a first auxiliary blocking unit disposed between the first blocking unit and the second blocking unit; and
a second auxiliary blocking unit disposed outside the second blocking unit; and
The first blocking part is disposed between the display area and the first auxiliary blocking part,
The first and second auxiliary blocking units include a plurality of third blocking patterns aligned in the second direction,
The plurality of third blocking patterns have a rectangular structure in which a vertical length is longer than a horizontal length, and the vertical length is longer than vertical and horizontal lengths of the plurality of second blocking patterns having a rectangular structure. According to claim 1,
Among the second blocking pattern columns parallel to the second direction, a pair of second blocking patterns arranged in the i-th second blocking pattern column and the second blocking pattern arranged in the i-1 second blocking pattern column are separated from each other in the first direction. An organic light emitting display device partially overlapping each other.
(where i is a natural number greater than or equal to 2) delete delete According to claim 1,
An organic light emitting display device in which fourth blocking patterns having a concave-convex structure with one side open are disposed between the second blocking patterns constituting the second blocking unit. 6. The method of claim 5,
An organic light emitting display device having at least one second blocking pattern disposed inside the fourth blocking pattern. According to claim 1,
A plurality of sub-pixels are disposed in the display area;
Each subpixel includes a driving transistor;
an organic light emitting diode disposed on the driving transistor; and
and a color filter disposed in a light emitting area corresponding to the organic light emitting diode. According to claim 1,
The heights of the first blocking pattern of the first blocking part and the second blocking patterns of the second blocking part are different from each other. According to claim 1,
The first blocking pattern of the first blocking portion and the second blocking patterns of the second blocking portion are formed of a polyimide or photoacrylic material. According to claim 1,
The first blocking pattern of the first blocking unit is a blocking pattern of a plurality of discontinuous blocking patterns or a continuous closed-loop structure.

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