Organic light emitting display device

An organic light emitting display device includes a substrate, a light emitting structure, a first conductive pattern, and a functional module. The substrate has an opening region, a peripheral region surrounding the opening region, and a display region surrounding the peripheral region, and includes a first groove, which has an enlarged lower portion, formed in the peripheral region and an opening formed in the opening region. The light emitting structure is in the display region on the substrate. The first conductive pattern overlaps the first groove in the peripheral region on the substrate. The functional module is in the opening of the substrate.

CROSS-REFERENCE TO RELATED APPLICATION

Korean Patent Application No. 10-2018-0153568, filed on Dec. 3, 2018, in the Korean Intellectual Property Office, and entitled: “Organic Light Emitting Display Device,” is incorporated by reference herein in its entirety.

BACKGROUND

Example embodiments relate generally to an organic light emitting display device.

2. Description of the Related Art

A flat panel display (“FPD”) device is widely used as a display device of an electronic device because the FPD device is lightweight and thin compared to a cathode-ray tube (“CRT”) display device. Typical examples of the FPD device are a liquid crystal display (“LCD”) device and an organic light emitting display (“OLED”) device.

SUMMARY

Embodiments are directed to an organic light emitting display device including a substrate, a light emitting structure, a first conductive pattern, and a functional module. The substrate has an opening region, a peripheral region surrounding the opening region, and a display region surrounding the peripheral region, and includes a first groove, which has an enlarged lower portion, formed in the peripheral region and an opening formed in the opening region. The light emitting structure is in the display region on the substrate. The first conductive pattern overlaps the first groove in the peripheral region on the substrate. The functional module is in the opening of the substrate.

In an example embodiment, the first conductive pattern may include a first sub-conductive pattern and second sub-conductive patterns. The first sub-conductive pattern may overlap the first groove, and may have a plan shape of a partially opened circle including an open portion. The second sub-conductive patterns may extend from the open portion of the first sub-conductive pattern in an outward direction.

In an example embodiment, the OLED device may further include pad electrodes and signal wirings. The pad electrodes may be on the substrate, and may be electrically connected to an external device. The signal wirings, which are located on the substrate, may be disposed along an outer portion of the substrate, and may electrically connect the second sub-conductive patterns and the pad electrodes.

In an example embodiment, the first groove may surround the opening on the substrate.

In an example embodiment, the first groove may have a plan shape of a circle.

In an example embodiment, the first conductive pattern, which is located on the first groove, may be disposed along a profile of an outer portion of the first groove.

In an example embodiment, the substrate may include a first organic film layer, a first barrier layer, a second organic film layer, and a second barrier layer. The first barrier layer may be on the first organic film layer. The second organic film layer may be on the first barrier layer, and may have a trench in the peripheral region. The second barrier layer may be on the second organic film layer, and the second barrier layer, which is located on the trench, may have a protruded portion that protrudes in an inner portion of the trench. The second barrier layer may have an opening defined by the protruded portion.

In an example embodiment, the first conductive pattern may overlap the protruded portion of the second barrier layer.

In an example embodiment, the protruded portion of the second barrier layer may include a first protruded portion and a second protruded portion. The first protruded portion may be located adjacent to the opening of the substrate. The second protruded portion may face the first protruded portion, and may be spaced apart from the first protruded portion in a direction from the opening region into the peripheral region.

In an example embodiment, the OLED device may further include a second conductive pattern, which is on the first protruded portion, overlapping the first protruded portion. The first conductive pattern may be overlapped on the second protruded portion.

In an example embodiment, the first conductive pattern and the second conductive pattern may be connected to each other in a region of the peripheral region, and may be integrally formed.

In an example embodiment, the trench of the second organic film layer, the protruded portion of the second barrier layer, and the opening of the second barrier layer may be defined as the first groove, which has the enlarged lower portion, of the substrate.

In an example embodiment, the light emitting structure may include a lower electrode, a light emitting layer on the lower electrode, and an upper electrode on the light emitting layer.

In an example embodiment, the light emitting layer may extend in a direction from the display region into the peripheral region on the substrate, and may be separated in a portion where the first groove is formed.

In an example embodiment, the upper electrode may extend in a direction from the display region into the peripheral region on the substrate, and may be separated in a portion where the first groove is formed.

In an example embodiment, the light emitting layer and the upper electrode may be in at least a portion of an inner portion of the first groove.

In an example embodiment, the OLED device may further include a thin film encapsulation structure on the light emitting structure and a touch screen structure in the display region on the thin film encapsulation structure.

In an example embodiment, the thin film encapsulation structure may include a first thin film encapsulation layer, a second thin film encapsulation layer, and a third thin film encapsulation layer. The first thin film encapsulation layer may be on the upper electrode, and may include inorganic materials that have flexibility. The second thin film encapsulation layer may be on the first thin film encapsulation layer, and may include organic materials that have flexibility. The third thin film encapsulation layer may be on the second thin film encapsulation layer, and may include inorganic materials that have flexibility.

In an example embodiment, each of the first thin film encapsulation layer and the third thin film encapsulation layer may extend in a direction from the display region into the peripheral region on the upper electrode, and may be continuously disposed in a portion where the first groove is formed.

In an example embodiment, the touch screen structure may include a first insulation layer in the display region on the third thin film encapsulation layer, a touch screen electrode on the first insulation layer, a second insulation layer on the touch screen electrode, a touch screen connection electrode on the second insulation layer, and a protective insulation layer on the touch screen connection electrode.

In an example embodiment, the first insulation layer may extend in a direction from the display region into the peripheral region on the third thin film encapsulation layer, and may be continuously disposed in a portion where the first groove is formed.

In an example embodiment, the OLED device may further include an organic insulation pattern in peripheral region on the first insulation layer.

In an example embodiment, the second insulation layer may be in contact with an upper surface of the first insulation layer in the display region, and may be in contact with an upper surface of the organic insulation pattern in the peripheral region.

In an example embodiment, the first conductive pattern may be between the second insulation layer and the protective insulation layer.

In an example embodiment, the functional module may be in contact with a side surface of the substrate, a side surface of the light emitting layer, a side surface of the upper electrode, a side surface of the first thin film encapsulation layer, a side surface of the third thin film encapsulation layer, a side surface of the first insulation layer, a side surface of the organic insulation pattern, a side surface of the second insulation layer, and a side surface of the protective insulation layer in a boundary of the peripheral region and the opening region.

In an example embodiment, the substrate may further include at least one second groove, which has an enlarged lower portion, between the first groove and the functional module. The first groove may surround the second groove.

In an example embodiment, the substrate may further include at least one third groove surrounding the first groove.

In an example embodiment, the OLED device may further include a block structure between the first groove and the third groove in the peripheral region on the substrate. The block structure may surround the first groove.

DETAILED DESCRIPTION

FIG. 1is a perspective view illustrating an organic light emitting display (“OLED”) device in accordance with an example embodiment, andFIG. 2is a plan view illustrating the OLED device ofFIG. 1.FIGS. 3 and 4are perspective views for describing an opening formed in the OLED device ofFIG. 1.

Referring toFIGS. 1, 2, 3, and 4, an OLED device100may include a functional module700, etc. The OLED device100may have a first surface S1and a second surface S2. An image may be displayed in the first surface S1, and the second surface S2may be opposite to the first surface S1. The functional module700may be in a side of the OLED device100.

As illustrated inFIG. 2, the OLED device100may have a display region10, an opening region20, a peripheral region30, and a pad region40. The peripheral region30may substantially surround the opening region20, and the display region10may substantially surround the peripheral region30. In another implementation, the display region10may not completely surround the peripheral region30. As illustrated inFIGS. 3 and 4, the OLED device100may have an opening910formed in the opening region20. The pad region40may be located in a side of the display region10. A plurality of pad electrodes may be in the pad region40, and the pad electrodes may be electrically connected to an external device. In an example embodiment, the OLED device100may have a bending region located between the display region10and the pad region40. For example, the bending region may be bent on an axis with respect to a first direction D1that is parallel to an upper surface of the OLED device100, and the pad region40may be located on a lower surface of the OLED device100.

The display region10may include a plurality of sub-pixel regions, which may be arranged in the display region10in a matrix form as a whole. A sub-pixel circuit (e.g., a semiconductor element250ofFIG. 8) may be in the sub-pixel regions each of the display region10, and an OLED (e.g., a light emitting structure200ofFIG. 8) may be on the sub-pixel circuit. An image may be displayed in the display region10through the sub-pixel circuit and the OLED.

For example, first, second, and third sub-pixel circuits may be in the sub-pixel regions, and first, second, and third OLEDs may be on the first, second, and third sub-pixel circuits. The first sub-pixel circuit may be coupled to (or connected to) a first OLED capable of emitting a red color of light, and the second sub-pixel circuit may be coupled to a second OLED capable of emitting a green color of light. The third sub-pixel circuit may be coupled to the third sub-pixel structure capable of emitting a blue color of light.

In an example embodiment, the first OLED may overlap the first sub-pixel circuit, and the second OLED may overlap the second sub-pixel circuit. The third OLED may overlap the third sub-pixel circuit. In another implementation, the first OLED may overlap a portion of the first sub-pixel circuit and a portion of a sub-pixel circuit that is different from the first sub-pixel circuit, and the second OLED may overlap a portion of the second sub-pixel circuit and a portion of a sub-pixel circuit region that is different from the second sub-pixel circuit. The third OLED may overlap a portion of the third sub-pixel circuit and a portion of a sub-pixel circuit that is different from the third sub-pixel circuit.

Thus, the first, second, and third OLEDs may be arranged using an RGB stripe method where tetragons of a same size are sequentially arranged, a s-stripe method including a blue OLED having a relatively large area, a WRGB method further including a white OLED, a pen-tile method repeatedly arranged in an RG-GB pattern, etc.

In addition, at least one driving transistor, at least one switching transistor, and at least one capacitor may be in each of the sub-pixel regions.

In an example embodiment, a shape of the display region10may a plan shape of a tetragon, for example. In an implementation, the shape of the display region10may have a plan shape of a triangle, a plan shape of a diamond, a plan shape of a polygon, a plan shape of a circle, a plan shape of an athletic track, a plan shape of an ellipse, etc.

The functional module700may be in the opening910. For example, the functional module700may include a camera module for capturing (or recognizing) an image of an object, a face recognition sensor module for sensing a face of a user, a pupil recognition sensor module for sensing a pupil of a user, acceleration and geomagnetic sensor modules for determining movement of the OLED device100, proximity and infrared sensor modules for detecting proximity to the OLED device100, and a light intensity sensor module for measuring the degree of brightness when left in a pocket or a bag, etc. In an example embodiment, a vibration or haptic module for indicating an incoming alarm, a speaker module for outputting sound, etc., may be in the opening910.

In an example embodiment, a shape of the opening region20and the peripheral region30each has a plan shape of a circle, for example. In an implementation, the shape of the opening region20and the peripheral region30each may have a plan shape of a triangle, a plan shape of a diamond, a plan shape of a polygon, a plan shape of a tetragon, a plan shape of an athletic track, a plan shape of an ellipse, etc.

FIG. 5is a partially enlarged plan view corresponding to region ‘A’ ofFIG. 2, andFIG. 6is a plan view for describing a conductive pattern included in the OLED device ofFIG. 5.FIG. 7is a block diagram for describing an external device electrically connected to the OLED device ofFIG. 6.

Referring toFIGS. 5, 6, and 7, the OLED device100may include a conductive pattern400, the functional module700, pad electrodes470, a connection wiring370, etc.

In an example embodiment, the opening910may be formed in the opening region20, and a groove930may be formed in the peripheral region30. The groove930may have a plan shape of a circle in a plan view of the OLED device100, and may surround the opening region20. In addition, the groove930may have an enlarged (or expanded) lower portion in a cross-sectional view of the OLED device100. Thus, a lower portion of the groove930may be relatively larger than an upper portion of the groove930.

The functional module700may be in the opening910, and the conductive pattern400may overlap the groove930. Thus, the conductive pattern400may be disposed along a profile of an outer portion of the groove930on the groove930. The conductive pattern400may substantially surround the functional module700(or the opening910). As illustrated inFIG. 6the conductive pattern400may include a first sub-conductive pattern401and second sub-conductive patterns402. The first sub-conductive pattern401may have a plan shape of a partially opened circle including an open portion, and the second sub-conductive patterns402may extend from the open portion of the first sub-conductive pattern401in an outward direction (e.g., a direction from the opening region20into the peripheral region30or a second direction D2that is perpendicular to the first direction D1). In an example embodiment, the first sub-conductive pattern401and the second sub-conductive patterns402may be integrally formed at a same layer. In another implementation, the first sub-conductive pattern401may be on the second sub-conductive patterns402, and the open portion of the first sub-conductive pattern401may be connected to a distal end of the second sub-conductive patterns402through a contact hole. In an implementation, the second sub-conductive patterns402may be on the first sub-conductive pattern401, and the open portion of the first sub-conductive pattern401may be connected to a distal end of the second sub-conductive patterns402through a contact hole. The first sub-conductive pattern401may overlap the groove930. For example, the first sub-conductive pattern401may overlap an outermost portion of the groove930. Thus, the first sub-conductive pattern401may overlap an outer boundary of the groove930. In another implementation, the first sub-conductive pattern401may overlap an innermost portion of the groove930. Thus, the first sub-conductive pattern401may overlap an inner boundary of the groove930.

The conductive pattern400may include a metal, an alloy of a metal, metal nitride, conductive metal oxide, transparent conductive materials, etc. For example, the conductive pattern400may include gold (Au), silver (Ag), aluminum (Al), tungsten (W), copper (Cu), platinum (Pt), nickel (Ni), titanium (Ti), palladium (Pd), magnesium (Mg), calcium (Ca), lithium (Li), chromium (Cr), tantalum (Ta), molybdenum (Mo), scandium (Sc), neodymium (Nd), iridium (Ir), an alloy of aluminum, aluminum nitride (AlN), an alloy of silver, tungsten nitride (WN), an alloy of copper, an alloy of molybdenum, titanium nitride (TiN), chromium nitride (CrN), tantalum nitride (TaN), strontium ruthenium oxide (SRO), zinc oxide (ZnO), indium tin oxide (ITO), tin oxide (SnO), indium oxide (InO), gallium oxide (GaO), indium zinc oxide (IZO), etc. These may be used alone or in a suitable combination thereof. In an example embodiment, the conductive pattern400may have a multi-layered structure including a plurality of layers.

The pad electrodes470may be in the pad region40. The pad electrodes470may include a first pad electrode471and a second pad electrode472. For example, the first pad electrode471may be located in a left side of the pad region40, and the second pad electrode472may be located in a right side of the pad region40. In an example embodiment, extra pad electrodes may be further between the first pad electrode471and the second pad electrode472. The pad electrodes470may include a metal, an alloy of a metal, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof. In an example embodiment, the pad electrodes470may have a multi-layered structure including a plurality of layers.

The connection wiring370may be in an outer portion of the display region10and the pad region40. The connection wiring370may include a first connection wiring371and a second connection wiring372. A first distal end of the first connection wiring371may be connected to the second sub-conductive pattern402located in a left side of the second sub-conductive patterns402, and the first connection wiring371may extend along a profile of an outer portion of the display region10and pad region40in a counterclockwise direction. A second distal end, which is opposite to the first distal end, of the first connection wiring371may be connected to the first pad electrode471in the pad region40. Similarly, a first distal end of the second connection wiring372may be connected to the second sub-conductive pattern402located in a right side of the second sub-conductive patterns402, and the second connection wiring372may extend along a profile of an outer portion of the display region10and pad region40in a clockwise direction. A second distal end, which is opposite to the first distal end, of the second connection wiring372may be connected to the second pad electrode472in the pad region40. Thus, the connection wiring370may electrically connect the conductive pattern400and the pad electrodes470. The connection wiring370may include a metal, an alloy of a metal, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof. In an example embodiment, the connection wiring370may have a multi-layered structure including a plurality of layers.

As illustrated inFIG. 7, an external device101may be electrically connected to the OLED device100through a flexible printed circuit board (“FPCB”). For example, one side of the FPCB may be in direct contact with the pad electrodes470, and another side of the FPCB may be in direct contact with the external device101. Thus, the external device101may electrically connect the first pad electrode471and the second pad electrode472, and may measure a resistance value between the first and second pad electrodes471and472.

A general OLED device may include a substrate, and a groove having an enlarged lower portion may be formed in the substrate. The substrate may have a stack structure where a first organic film layer, a first barrier layer, a second organic film layer, and a second barrier layer are sequentially stacked. As the groove is formed in the substrate, a light emitting layer and an upper electrode may be separated (or cut, etc.) in a peripheral region. For example, the groove having the enlarged lower portion may have an under-cut shape, and the second organic film layer and the second barrier layer may be formed in the peripheral region30. The second organic film layer may have a trench of a second width, and the second barrier layer may have an opening of a first width that overlaps the trench. The first width may be less than the second width. In addition, a protruded portion of the second barrier layer located adjacent to the opening may be defined as a tip, and the light emitting layer and the upper electrode may be separated in the peripheral region through the tip. However, the tip may be easily damaged by external impacts or a stress in a manufacturing process (e.g., a removal of top and/or bottom protection films, etc.). When the tip is damaged, the light emitting layer and the upper electrode may not be separated in the peripheral region, and moisture and/or water may be penetrated through the light emitting layer and the upper electrode. Thus, a defect of a pixel included in the general OLED device may occur by the moisture and/or water. Thus, a defect of the general OLED device may occur due to a damage of the tip, such damage to the tip should be checked for in a manufacturing process of the general OLED device. However, it may not be straightforward to visually observe the damage of the tip.

In an example embodiment, the OLED device100includes the conductive pattern400, the pad electrodes470, and the connection wiring370, and the OLED device100may check whether the tip is damaged. For example, the OLED device100may measure a resistance value between the first and second pad electrodes471and472by using the external device101. Accordingly, the OLED device100may check whether the tip is damaged by using the resistance value. Here, when the damage of the tip is generated, the resistance value may be increased or it may be in an open state by a cut of the conductive pattern400. Thus, a defect ratio of the OLED device100may be reduced by the OLED device100checking whether the tip is damaged.

In an example embodiment, the external device101may generate a data signal, a gate signal, a light emission signal, a gate initialization signal, an initialization voltage, a power supply, etc. As described above, the extra pad electrodes may be further between the first and second pad electrodes471and472, and the external device101may be electrically connected to the extra pad electrodes. In this case, the external device101may provide the data signal, the gate signal, the light emission signal, the gate initialization signal, the initialization voltage, the power supply, etc. to the OLED device100. In addition, a driving integrated circuit may be installed in the FPCB. In another implementation, the driving integrated circuit may be installed in a portion, which is located adjacent to the pad electrode470, of the OLED device100.

FIG. 8is a cross-sectional view taken along lines I-I′ ofFIG. 5, andFIG. 9is a plan view for describing a touch screen structure included in the OLED device ofFIG. 8.

Referring toFIGS. 8 and 9, the OLED device100may include a substrate110, a semiconductor element250, a planarization layer270, a light emitting structure200, a pixel defining layer310, a thin film encapsulation (“TFE”) structure450, a touch screen structure380, an organic insulation pattern490, a conductive pattern400, a functional module700, etc. The substrate110may include a first organic film layer111, a first barrier layer112, a second organic film layer113, and a second barrier layer114. In the OLED device100having the display region10, the opening region20, the peripheral region30, and the pad region40, the substrate110may be divided into the display region10, the opening region20, the peripheral region30, and the pad region40. In addition, the semiconductor element250may include an active layer130, a gate insulation layer150, a gate electrode170, an insulating interlayer190, a source electrode210, and a drain electrode230, and the light emitting structure200may include a lower electrode290, a light emitting layer330, and an upper electrode340. Further, the TFE structure450may include a first TFE layer451, a second TFE layer452, and a third TFE layer453, and the touch screen structure380may include a first insulation layer390, a plurality of first touch screen electrodes382, a plurality of second touch screen electrodes384, a plurality of touch screen connection electrodes386, a second insulation layer395, and a protective insulation layer410.

In an example embodiment, the substrate110may further include a groove930formed in the peripheral region30, and each of the light emitting layer330and the upper electrode340may be separated in an inner portion (or an inside) of the groove930. Thus, each of the light emitting layer330and the upper electrode340may be separated in the inner portion of the groove930. In the OLED device100having the light emitting layer330and the upper electrode340that are separated in the inner portion of the groove930, the OLED device100may block moisture, water, etc. from permeating into the semiconductor element250and the light emitting structure200. In addition, the substrate110may have an opening910formed in the opening region20, and the functional module700may be in the opening910(refer toFIG. 20).

The first organic film layer111may be provided. The first organic film layer111may include organic materials having flexibility. For example, the first organic film layer111may include a random copolymer or a block copolymer. In addition, the first organic film layer111may have a high transparency, a low coefficient of thermal expansion, and a high glass transition temperature. In the case that the first organic film layer111includes an imide radical, a heat resistance, a chemical resistance, a wear resistance, and an electrical characteristics may be excellent. In an example embodiment, the first organic film layer111may include polyimide.

The first barrier layer112may be on the entire first organic film layer111. The first barrier layer112may block water and/or moisture that is permeated through the first organic film layer111. The first barrier layer112may include inorganic materials having flexibility. In an example embodiment, the first barrier layer112may include silicon oxide, silicon nitride, etc. For example, the first barrier layer112may include silicon oxide (SiO), silicon nitride (SiN), silicon oxynitride (SiON), silicon oxycarbide (SiOC), silicon carbon nitride (SiCN), aluminum oxide (AlO), aluminum nitride (AlN), tantalum oxide (TaO), hafnium oxide (HfO), zirconium oxide (ZrO), titanium oxide (TiO), etc.

The second organic film layer113may be on the entire first barrier layer112. In an example embodiment, the second organic film layer113may have a trench in the peripheral region30. Thus, a portion of the second organic film layer113located in the peripheral region30may be partially removed. A width of the trench may be defined as a second width W2(refer toFIG. 13). In another implementation, a portion of the second organic film layer113located in the peripheral region30may be completely removed, such that the second organic film layer113may have an opening in the peripheral region30. In this case, an upper surface of the first barrier layer112may be exposed through the opening.

The second organic film layer113may include organic materials having flexibility. For example, the first barrier layer112may include random copolymer or block copolymer. In an example embodiment, the second organic film layer113may include polyimide.

The second barrier layer114may be on the entire second organic film layer113. In an example embodiment, the second barrier layer114may have an opening in the peripheral region30. Thus, the second barrier layer114may have first and second protruded portions116and117(or a tip) that protrude in an inner portion of the trench on the trench, and may have an opening defined by the first and second protruded portions116and117. For example, the first protruded portion116may be located adjacent to a boundary of the peripheral region30and the opening region20(e.g., the opening910of the substrate110). The second protruded portion117may face the first protruded portion116, and may be spaced apart from the first protruded portion116. A width of the opening of the second barrier layer114may have a first width W1that is less than the second width W2(refer toFIG. 13). In addition, a space located under each of the first and second protruded portions116and117may be defined as first and second spaces118and119(refer toFIG. 14). The trench of the second organic film layer113, the first and second protruded portions116and117of the second barrier layer114, and the opening of the second barrier layer114may be defined as the groove930, which has an enlarged lower portion, formed in the OLED device100located in the peripheral region30. For example, the groove930having the enlarged lower portion may have an under-cut shape. The groove930may serve as a block pattern capable of blocking water and/or moisture permeated from the opening region20into the display region10. In an example embodiment, a plurality of grooves may be formed between the groove930and the functional module700, and may be formed between the light emitting structure200and the groove930that are located adjacent to a boundary of the display region10and the peripheral region30.

The second barrier layer114may block water and/or moisture that is permeated through the second organic film layer113. The second barrier layer114may include inorganic materials having flexibility. In an example embodiment, the second barrier layer114may include SiO, SiN, etc.

Accordingly, the substrate110including the first organic film layer111, the first barrier layer112, the second organic film layer113, and the second barrier layer114may be disposed.

In an example embodiment, the substrate110includes four layers, but the substrate110may include, for example, a single layer or at least two layers.

In an example embodiment, the substrate110may include transparent or opaque materials. For example, the substrate110may include a quartz substrate, a synthetic quartz substrate, a calcium fluoride substrate, a fluoride-doped quartz substrate, a soda-lime glass substrate, a non-alkali glass substrate, etc.

The buffer layer may be on the substrate110(e.g., the second barrier layer114). For example, the buffer layer may be on the entire substrate110except for the peripheral region30. In another implementation, the buffer layer may be in the peripheral region30on the substrate110. In this case, the buffer layer may have an opening overlapping the opening of the second barrier layer114. The buffer layer may help prevent the diffusion of metal atoms and/or impurities from the substrate110into the semiconductor element250and the light emitting structure200. In addition, the buffer layer may control a rate of a heat transfer in a crystallization process for forming an active layer, thereby obtaining substantially uniform active layer. Further, the buffer layer may improve a surface flatness of the substrate110when a surface of the substrate110is relatively irregular. According to a type of the substrate110, at least two buffer layers may be provided on the substrate110, or the buffer layer may not be disposed. For example, the buffer layer may include organic materials or inorganic materials.

The active layer130may be in the display region10on the substrate110. The active layer130may include an oxide semiconductor, an inorganic semiconductor (e.g., amorphous silicon, polysilicon, etc.), an organic semiconductor, etc. The active layer130may have a source region and a drain region.

The gate insulation layer150may be on the active layer130. The gate insulation layer150may cover the active layer130in the display region10on the substrate110, and may not be in the peripheral region30. Thus, the gate insulation layer150may be only in the display region10on the substrate110. For example, the gate insulation layer150may sufficiently cover the active layer130on the substrate110, and may have a substantially flat upper surface without a step around the active layer130. In another implementation, the gate insulation layer150may cover the active layer130on the substrate110, and may be disposed with a substantially uniform thickness along a profile of the active layer130. The gate insulation layer150may include silicon compound, metal oxide, etc. In an example embodiment, the gate insulation layer150may have a multi-layered structure including a plurality of insulation layers. For example, the insulation layers may have different thicknesses to each other or include different materials to each other.

The gate electrode170may be in the display region10on the gate insulation layer150. The gate electrode170may be on a portion of the gate insulation layer150under which the active layer130is located. The gate electrode170may include a metal, a metal alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof. In another implementation, the gate electrode170may have a multi-layered structure including a plurality of layers.

The insulating interlayer190may be on the gate electrode170. The insulating interlayer190may cover the gate electrode170in the display region10on the gate insulation layer150, and may not be in the peripheral region30. Thus, the insulating interlayer190may be only in the display region10on the gate insulation layer150. For example, the insulating interlayer190may sufficiently cover the gate electrode170on the gate insulation layer150, and may have a substantially flat upper surface without a step around the gate electrode170. In another implementation, the insulating interlayer190may cover the gate electrode170on the gate insulation layer150, and may be disposed with a substantially uniform thickness along a profile of the gate electrode170. The insulating interlayer190may include silicon compound, metal oxide, etc. In an example embodiment, the insulating interlayer190may have a multi-layered structure including a plurality, of insulation layers. The insulation layers may have different thicknesses to each other or include different materials to each other.

In an example embodiment, the semiconductor element250may have a top gate structure, for example. In another implementation, in an example embodiment, the semiconductor element250may have a bottom gate structure, a double gate structure, etc.

In addition, the OLED device100may include one semiconductor element, for example. In another implementation, in an example embodiment, the OLED device100may include at least one semiconductor element and at least one capacitor.

The planarization layer270may be on the insulating interlayer190, the source electrode210, and the drain electrode230. The planarization layer270may cover the source and drain electrodes210and230in the display region10on the insulating interlayer190, and may not be in the peripheral region30. Thus, the planarization layer270may be only in the display region10on the insulating interlayer190. For example, the planarization layer270may be disposed with a relatively high thickness in the display region10. In this case, the planarization layer270may have a substantially flat upper surface, and a planarization process may be further performed on the planarization layer270to implement the flat upper surface of the planarization layer270. In another implementation, the planarization layer270may be disposed with a substantially uniform thickness along a profile of the source and drain electrodes210and230in the display region10on the insulating interlayer190. The planarization layer270may include organic materials or inorganic materials. In an example embodiment, the planarization layer270may include organic materials.

The pixel defining layer310may be in the display region10on the planarization layer270, and may not be in the peripheral region30. Thus, the pixel defining layer310may be only in the display region10. For example, the pixel defining layer310may cover both lateral portions of the lower electrode290, and may expose a portion of an upper surface of the lower electrode290. The pixel defining layer310may include organic materials or inorganic materials. In an example embodiment, the pixel defining layer310may include organic materials.

The light emitting layer330may be on the pixel defining layer310and the lower electrode290in the display region10and extend in the first direction D1, and may be in the peripheral region30on the substrate110. In an example embodiment, the light emitting layer330may be partially in an inner portion of the groove930, and the light emitting layer330in a portion where the groove930is located may be separated in a depth direction (e.g., a direction from the second barrier layer114into the first organic film layer111). Thus, the light emitting layer330may be separated in the peripheral region30. Thus, the light emitting layer330may be separated in the peripheral region30by the first and second spaces118and119.

For example, when the groove930does not have the first and second protruded portions116and117, the light emitting layer330may be continuously disposed in a portion where the groove930is formed, and the light emitting layer330may act as a permeability path of water and/or moisture. Thus, a portion of the light emitting layer330(e.g., a side distal end of the light emitting layer330) may be exposed in the opening region20, and the water and/or moisture may permeate into the exposed portion of the light emitting layer330. In this case, the semiconductor element250and the light emitting structure200that are in the display region10located adjacent to the peripheral region30may be damaged by the water and/or moisture. Meanwhile, in accordance with an example embodiment, the OLED device100includes the groove930having the enlarged lower portion. Thus, the light emitting layer330may be separated in the inner portion of the groove930, such that the permeation path of the light emitting layer330may be blocked. Accordingly, when the light emitting layer330is in the peripheral region30, a defect of a pixel included in the OLED device100may not occur.

The light emitting layer330may have a multi-layered structure including an organic light emission layer (“EML”), a hole injection layer (“HIL”), a hole transport layer (“HTL”), an electron transport layer (“ETL”), an electron injection layer (“EIL”), etc. In an example embodiment, the EML, the HIL, the HTL, the ETL, and the EIL may be in the peripheral region30. In an example embodiment, the HIL, the HTL, the ETL, and the EIL except for the EML may be in the peripheral region30.

The EML of the light emitting layer330may be formed using at least one of light emitting materials capable of generating different colors of light (e.g., a red color of light, a blue color of light, and a green color of light, etc.) according to sub-pixels. In another implementation, the EML of the light emitting layer330may generally generate a white color of light by stacking a plurality of light emitting materials capable of generating different colors of light such as a red color of light, a green color of light, a blue color of light, etc. In this case, a color filter may be on the light emitting layer330that is located on the lower electrode290. The color filter may include at least one selected from a red color filter, a green color filter, and a blue color filter. In another implementation, the color filter may include a yellow color filter, a cyan color filter, and a magenta color filter. The color filter may include a photosensitive resin, a color photoresist, etc.

The upper electrode340may be on the light emitting layer330. The upper electrode340may overlap the light emitting layer330in the display region10and extend in the first direction D1, and may be in the peripheral region30on the light emitting layer330. In an example embodiment, the upper electrode340may be partially in the inner portion of the groove930, and the upper electrode340in a portion where the groove930is located may be separated in the depth direction. Thus, the upper electrode340may be separated in the peripheral region30. Thus, the upper electrode340may be separated in the peripheral region30by the first and second spaces118and119.

For example, when the groove930does not have the first and second protruded portions116and117, the upper electrode340may be continuously disposed in a portion where the groove930is formed, and the upper electrode340may act as a permeation path of water and/or moisture. Thus, a portion of the upper electrode340(e.g., a side distal end of the upper electrode340) may be exposed in the opening region20, and the water and/or moisture may permeate into the exposed portion of the upper electrode340. In this case, the semiconductor element250and the light emitting structure200that are in the display region10located adjacent to the peripheral region30may be damaged by the water and/or moisture. Meanwhile, in accordance with an example embodiment, the OLED device100may include the groove930having the enlarged lower portion. Thus, the upper electrode340may be separated in the inner portion of the groove930. Thus, as the upper electrode340is separated in the inner portion of the groove930, the permeation path of the upper electrode340may be blocked. Accordingly, when the upper electrode340is in the peripheral region30, a defect of a pixel included in the OLED device100may not occur.

The upper electrode340may include a metal, a metal alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof. In an example embodiment, the upper electrode340may have a multi-layered structure including a plurality of layers.

Accordingly, the light emitting structure200including the lower electrode290, the light emitting layer330, and the upper electrode340may be disposed.

A capping layer may be on the upper electrode340. The capping layer may overlap the upper electrode340in the display region10and extend in the first direction D1, and may be in the peripheral region30on the upper electrode340. In an example embodiment, the capping layer may be partially in the inner portion of the groove930, and the capping layer in a portion where the groove930is located may be separated in the depth direction. Thus, the capping layer may be separated in the peripheral region30. Thus, the capping layer may be separated in the peripheral region30by the first and second spaces118and119.

For example, when the groove930does not have the first and second protruded portions116and117, the capping layer may be disposed continuously in a portion where the groove930is formed, and the capping layer may act as a permeation path of water and/or moisture. Thus, a portion of the capping layer (e.g., a side distal end of the capping layer) may be exposed in the opening region20, and the water and/or moisture may permeate into the exposed portion of the capping layer. In this case, the semiconductor element250and the light emitting structure200that are in the display region10located adjacent to the peripheral region30may be damaged by the water and/or moisture. Meanwhile, in accordance with an example embodiment, the OLED device100includes the groove930having the enlarged lower portion. Thus, the capping layer may be separated in the inner portion of the groove930. Thus, as the capping layer is separated in the inner portion of the groove930, the permeation path of the capping layer may be blocked. Accordingly, when the capping layer is in the peripheral region30, a defect of a pixel included in the OLED device100may not occur.

The capping layer may protect the light emitting structure200, and may include organic materials or inorganic materials. In an example embodiment, the capping layer may include organic materials such as a triamine derivative, arylenediamine derivative, 4,4′-N,N′-dicarbazole-biphenyl (“CBP”), tris(8-hydroxyquinolate)aluminum (“Alq3”), etc.

The first TFE layer451may be in the display region10and the peripheral region30on the upper electrode340. The first TFE layer451may cover the upper electrode340in the display region10, and may be disposed with a substantially uniform thickness along a profile of the upper electrode340and may extend in the peripheral region30. The first TFE layer451may be disposed along a profile of the upper electrode340in the peripheral region30. Thus, the first TFE layer451may be continuously disposed in a portion where the groove930is formed. In an example embodiment, the first TFE layer451may completely cover the groove930. Thus, the first TFE layer451may cover the first and second protruded portions116and117, and may be in the first and second spaces118and119and completely cover the light emitting layer330and the upper electrode340that are disposed inside the groove930. Thus, the first TFE layer451may be in direct contact with the second organic film layer113in the first and second spaces118and119. The first TFE layer451may help prevent the light emitting structure200from being deteriorated by the permeation of moisture, water, oxygen, etc. In addition, the first TFE layer451may protect the light emitting structure200from external impacts. The first TFE layer451may include inorganic materials having flexibility.

The second TFE layer452may be in the display region10on the first TFE layer451, and may not be in the peripheral region30. Thus, the second TFE layer452may be only in the display region10. In another implementation, the second TFE layer452may be in a portion of the peripheral region30. The second TFE layer452may improve the flatness of the OLED device100, and may protect the light emitting structure200. The second TFE layer452may include organic materials having the flexibility.

The third TFE layer453may be in the display region10on the second TFE layer452and in the peripheral region30on the first TFE layer451. The third TFE layer453may cover the second TFE layer452in the display region10, and may be disposed with a substantially uniform thickness along a profile of the second TFE layer452and may extend in the peripheral region30. The third TFE layer453may be disposed with a substantially uniform thickness along a profile of the first TFE layer451in the peripheral region30. Thus, the third TFE layer453may be continuously formed in a portion where the groove930is formed. The third TFE layer453together with the first TFE layer451may help prevent the light emitting structure200from being deteriorated by the permeation of moisture, water, oxygen, etc. In addition, the third TFE layer453together with the first and second TFE layers451and452may protect the light emitting structure200from external impacts. The third TFE layer453may include inorganic materials having the flexibility.

Accordingly, the TFE structure450including the first TFE layer451, the second TFE layer452, and the third TFE layer453may be disposed. In another implementation, the TFE structure450may have five layers structure where first to fifth TFE layers are stacked or seven layers structure where first to seventh TFE layers are stacked.

The first insulation layer390may be in the display region10and the peripheral region30on the third TFE layer453. The first insulation layer390may cover the third TFE layer.453in the display region10, and may be disposed with a substantially uniform thickness along a profile of the third TFE layer453and may extend in the peripheral region30. The first insulation layer390may be disposed with a substantially uniform thickness along a profile of the third TFE layer453in the peripheral region30. Thus, the first insulation layer390may be continuously disposed in a portion where the first insulation layer390is formed. The first insulation layer390may include organic materials or inorganic materials. In another implementation, the first insulation layer390may have a multi-layered structure including a plurality of insulation layers. For example, the insulation layers may have different thicknesses to each other or include different materials to each other.

The organic insulation pattern490may be in the peripheral region30on the first insulation layer390. In an example embodiment, the organic insulation pattern490may be only in the peripheral region30. In another implementation, the organic insulation pattern490may be in a portion of the display region10. The organic insulation pattern490may be disposed with a relatively high thickness in the peripheral region30on the first insulation layer390. In this case, the organic insulation pattern490may have a substantially flat upper surface, and a planarization process may be further performed on the organic insulation pattern490to implement the flat upper surface of the organic insulation pattern490. In another implementation, the organic insulation pattern490may be disposed with a substantially uniform thickness along a profile of the first insulation layer390in the display region10on the first insulation layer390. The organic insulation pattern490may include organic materials or inorganic materials. In an example embodiment, the organic insulation pattern490may include organic materials such as a photoresist, a polyacryl-based resin, a polyimide-based resin, a polyamide-based resin, a siloxane-based resin, an acryl-based resin, an epoxy-based resin, etc.

The first touch screen electrodes382and the second touch screen electrodes384may be in the display region10on the first insulation layer390. As illustrated inFIG. 9, each of the first touch screen electrodes382may extend in the second direction D2, and may be spaced apart from each other by the first direction D1. The second touch screen electrodes384may be spaced apart from each other in the second direction D2between adjacent two first touch screen electrodes382among the first touch screen electrodes382. For example, each of the first and second touch screen electrodes382and384may include a carbon nano-tube (CNT), transparent conductive oxide, ITO, indium gallium zinc oxide (IGZO), ZnO, a graphene, Ag nanowire (AgNW), Cu, Cr, etc.

The second insulation layer395may be in the display region10on the first and second touch screen electrodes382and384. The second insulation layer395may cover the first and second touch screen electrodes382and384in the display region10, and may be disposed with a substantially uniform thickness along a profile of the first and second touch screen electrodes382and384and may extend in the peripheral region30. The second insulation layer395may be disposed along a profile of the organic insulation pattern490in the peripheral region30. Thus, the second insulation layer395may be in contact with an upper surface of the first insulation layer390in the display region10, and may be in contact with an upper surface of the organic insulation pattern490in the peripheral region30. The second insulation layer395may include organic materials or inorganic materials. In another implementation, the second insulation layer395may have a multi-layered structure including a plurality of insulation layers. The insulation layers may have different thicknesses to each other or include different materials to each other.

The touch screen connection electrodes386may be in the display region10on the second insulation layer395. As illustrated inFIG. 9, the touch screen connection electrodes386may electrically connect adjacent two second touch screen electrodes384in the first direction D1among the second touch screen electrodes384through a contact hole. For example, the touch screen connection electrodes386and the first and second touch screen electrodes382and384may have same materials. In another implementation, the touch screen connection electrodes386may, include a metal, an alloy of a metal, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof.

The conductive pattern400may be in the peripheral region30on the second insulation layer395. In an example embodiment, to detect a damage of the second protruded portion117(or the first protruded portion116), the conductive pattern400may overlap the second protruded portion117of the groove930. In another implementation, the conductive pattern400may overlap the first protruded portion116.

For example, the conductive pattern400on the groove930may be disposed along a profile of the second protruded portion117of the groove930. The conductive pattern400may substantially surround the functional module700(or the opening910). The conductive pattern400may include a first sub-conductive pattern401and second sub-conductive patterns402(refer toFIG. 6). The first sub-conductive pattern401may have a plan shape of a partially opened circle including an open portion, and the second sub-conductive patterns402may extend from the open portion of the first sub-conductive pattern401in the second direction D2. In an example embodiment, the first sub-conductive pattern401and the second sub-conductive patterns402may be integrally formed at a same layer.

In another implementation, the first sub-conductive pattern401may be on the second sub-conductive patterns402, and the open portion of the first sub-conductive pattern401may be connected to a distal end of the second sub-conductive patterns402through a contact hole. In another implementation, the second sub-conductive patterns402may be on the first sub-conductive pattern401, and the open portion of the first sub-conductive pattern401may be connected to a distal end of the second sub-conductive patterns402through a contact hole.

The first sub-conductive pattern401may overlap the groove930. For example, the first sub-conductive pattern401may overlap an outermost portion of the groove930. Thus, the first sub-conductive pattern401may overlap an outer boundary of the groove930. In another implementation, the first sub-conductive pattern401may overlap an innermost portion of the groove930. Thus, the first sub-conductive pattern401may overlap an inner boundary of the groove930.

The conductive pattern400and the touch screen connection electrodes386may be simultaneously formed using same materials. In another implementation, the conductive pattern400and the first and second touch screen electrodes382and384may be simultaneously formed using same materials.

The protective insulation layer410may be in the display region10and the peripheral region30on the second insulation layer395, the touch screen connection electrodes386, and the conductive pattern400. The protective insulation layer410may be disposed with a relatively high thickness on the second insulation layer395. In this case, the protective insulation layer410may have a substantially flat upper surface. In another implementation, the protective insulation layer410may cover the touch screen connection electrodes386and the conductive pattern400in the display region10and the peripheral region30on the second insulation layer395, and may be disposed with a substantially uniform thickness along a profile of the touch screen connection electrodes386and the conductive pattern400. The protective insulation layer410may include organic materials or inorganic materials. In an example embodiment, the protective insulation layer410may include organic materials.

As described above, the touch screen structure380including the first insulation layer390, the first touch screen electrodes382, the second touch screen electrodes384, the second insulation layer395, the touch screen connection electrodes386, and the protective insulation layer410may be arranged.

The functional module700may be in the opening region20. In an example embodiment, the functional module700may be in contact with a side surface of the substrate110, a side surface of the light emitting layer330, a side surface of the upper electrode340, a side surface of the first TFE layer451, a side surface of the third TFE layer453, a side surface of the first insulation layer390, a side surface of the organic insulation pattern490, a side surface of the second insulation layer395, and a side surface of the protective insulation layer410in a boundary of the peripheral region30and the opening region20.

For example, the functional module700may include a camera module, a face recognition sensor module, a pupil recognition sensor module, acceleration and geomagnetic sensor modules, proximity and infrared sensor modules, and a light intensity sensor module, etc. In an example embodiment, a vibration or haptic module for indicating an incoming alarm, a speaker module for outputting sound, etc. may be in the opening910.

The OLED device100in accordance with an example embodiment includes the conductive pattern400, the pad electrodes470, and the connection wiring370. Thus, the OLED device100may check whether the second protruded portion117is damaged. Accordingly, a defect ratio of the OLED device100may be reduced by the OLED device100checking whether the second protruded portion117is damaged.

FIGS. 10 through 20are cross-sectional views illustrating a method of manufacturing an OLED device in accordance with an example embodiment.

Referring toFIG. 10, a rigid glass substrate105may be provided. A first organic film layer111may be formed on the rigid glass substrate105. The first organic film layer111may be formed on the entire rigid glass substrate105, and may be formed using organic materials having flexibility such as polyimide.

A first barrier layer112may be formed on the entire first organic film layer111. The first barrier layer112may block water and/or moisture that is permeated through the first organic film layer111. The first barrier layer112may be formed using inorganic materials having flexibility such as silicon oxide, silicon nitride, etc. For example, the first barrier layer112may include SiO, SiN, SiON, SiOC, SiCN, AlO, AlN, TaO, HfO, ZrO, TiO, etc.

A second organic film layer113may be formed on the first barrier layer112. The second organic film layer113may be formed on the entire first barrier layer112, and may be formed using organic materials having flexibility such as polyimide.

A second barrier layer114may be formed on the entire second organic film layer113. The second barrier layer114may block water and/or moisture that is permeated through the second organic film layer113. The second barrier layer114may be formed using inorganic materials having flexibility such as SiO, S. N, etc.

Accordingly, a substrate110including the first organic film layer111, the first barrier layer112, the second organic film layer113, and the second barrier layer114may be formed.

The substrate110may be relatively thin and flexible. Thus, the substrate110may be formed on a rigid glass substrate105to help support the formation of an upper structure (e.g., a semiconductor element and a light emitting structure, etc.). For example, after the upper structure is formed on the substrate110, the rigid glass substrate105may be removed. It may not be straightforward to directly form the upper structure on the first and second organic film layers111and113and the first and second barrier layers112and114because the first and second organic film layers111and113and the first and second barrier layers112and114are relatively thin and flexible. Accordingly, the upper structure may be formed on the substrate110and the rigid glass substrate, and then the first and second organic film layers111and113and the first and second barrier layers112and114may serve as the substrate110after the removal of the rigid glass substrate105.

A buffer layer may be formed on the substrate110. The buffer layer may be formed on the entire substrate110. The buffer layer may help prevent the diffusion of metal atoms and/or impurities from the substrate110. In addition, the buffer layer may control a rate of a heat transfer in a crystallization process for forming an active layer, thereby obtaining substantially uniform active layer. Further, the buffer layer may improve a surface flatness of the substrate110when a surface of the substrate110is relatively irregular. According to a type of the substrate110, at least two buffer layers may be provided on the substrate110, or the buffer layer may not be formed. For example, the buffer layer may be formed using organic materials or inorganic materials.

Referring toFIG. 11, an active layer130may be formed in a display region10on the substrate110. The active layer130may be formed using an oxide semiconductor, an inorganic semiconductor, an organic semiconductor, etc. The active layer130may have a source region and a drain region.

A gate insulation layer150may be formed on the active layer130. The gate insulation layer150may cover the active layer130in the display region10on the substrate110, and may extend in a first direction11lfrom the display region10into an opening region20. Thus, the gate insulation layer150may be formed on the entire substrate110. For example, the gate insulation layer150may sufficiently cover the active layer130on the substrate110, and may have a substantially flat upper surface without a step around the active layer130. In another implementation, the gate insulation layer150may cover the active layer130on the substrate110, and may be formed with a substantially uniform thickness along a profile of the active layer130. The gate insulation layer150may be formed using silicon compound, metal oxide, etc. In another implementation, the gate insulation layer150may have a multi-layered structure including a plurality of insulation layers. For example, the insulation layers may have different thicknesses to each other or include different materials to each other.

A gate electrode170may be formed in the display region10on the gate insulation layer150. The gate electrode170may be formed on a portion of the gate insulation layer150under which the active layer130is located. The gate electrode170may be formed using a metal, a metal alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof. In another implementation, the gate electrode170may have a multi-layered structure including a plurality of layers.

An insulating interlayer may be formed on the gate electrode170. The insulating interlayer190may cover the gate electrode170in the display region10on the gate insulation layer150, and may extend in the first direction D1. Thus, the insulating interlayer190may be formed on the entire gate insulation layer150. For example, the insulating interlayer190may sufficiently cover the gate electrode170on the gate insulation layer150, and may have a substantially flat upper surface without a step around the gate electrode170. In another implementation, the insulating interlayer190may cover the gate electrode170on the gate insulation layer150, and may be formed with a substantially uniform thickness along a profile of the gate electrode170. The insulating interlayer190may be formed using silicon compound, metal oxide, etc. In an example embodiment, the insulating interlayer190may have a multi-layered structure including a plurality of insulation layers. The insulation layers may have different thicknesses to each other or include different materials to each other.

Referring toFIG. 12, a source electrode210and a drain electrode230may be formed in the display region10on the insulating interlayer190. The source electrode210may be connected to the source region of the active layer130via a contact hole formed by removing a first portion of the gate insulation layer150and the insulating interlayer190. The drain electrode230may be connected to the drain region of the active layer130via a contact hole formed by removing a second portion of the gate insulation layer150and the insulating interlayer190. Each of the source electrode210and the drain electrode230may include a metal, an alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof. In an example embodiment, each of the source and drain electrodes210and230may have a multi-layered structure including a plurality of layers. Accordingly, a semiconductor element250including the active layer130, the gate insulation layer150, the gate electrode170, the insulating interlayer190, the source electrode210, and the drain electrode230may be formed.

A planarization layer270may be formed on the insulating interlayer190, the source electrode210, and the drain electrode230. The planarization layer270may cover the source and drain electrodes210and230in the display region10on the insulating interlayer190, and may not be formed in the peripheral region30. Thus, the planarization layer270may be formed only in the display region10on the insulating interlayer190. For example, the planarization layer270may be formed with a relatively high thickness in the display region10. In this case, the planarization layer270may have a substantially flat upper surface, and a planarization process may be further performed on the planarization layer270to implement the flat upper surface of the planarization layer270. In another implementation, the planarization layer270may be formed with a substantially uniform thickness along a profile of the source and drain electrodes210and230in the display region10on the insulating interlayer190. The planarization layer270may be formed using organic materials.

Referring toFIG. 13, after the lower electrode290is formed, the gate insulation layer150and the insulating interlayer190that are located in a peripheral region30may be removed. After the gate insulation layer150and the insulating interlayer190that are located in the peripheral region30are removed, a groove930having an enlarged lower portion may be formed in the substrate110located in the peripheral region30through a laser or a dry etching process. The groove930may have an under-cut shape. For example, a trench, which has a second width W2, formed in the second organic film layer113and an opening, which has a first width W1that is less than the second width W2, formed in the second barrier layer114may be defined as the under-cut shape. In another implementation, an opening, which has a second width W1formed in the second organic film layer113and an opening, which has a first width W1that is less than the second width W2, formed in the second barrier layer114may be defined as the under-cut shape. In this case, an upper surface of the first barrier layer112may be exposed through the opening of the second organic film layer113.

First and second protruded portions116and117that protrude in an inner portion of the trench on the trench of the second organic film layer113may be defined by the opening of the second barrier layer114. For example, the first protruded portion116may be located adjacent to a boundary of the peripheral region30and the opening region20. The second protruded portion117may face the first protruded portion116, and may be spaced apart from the first protruded portion116. In addition, a space located under each of the first and second protruded portions116and117may be defined as first and second spaces118and119(refer toFIG. 14). Accordingly, the trench of the second organic film layer113, the first and second protruded portions116and117of the second barrier layer114, and the opening of the second barrier layer114may be defined as the groove930, which has the enlarged lower portion, formed in the substrate110located in the peripheral region30. In an example embodiment, a plurality of grooves may be formed to be spaced apart from the groove930by the first direction D1, and may be formed to be spaced apart from the groove930by a direction that is opposite to the first direction D1.

Referring toFIG. 14, a pixel defining layer310may be formed in the display region10on the planarization layer270, and may not be formed in the peripheral region30. Thus, the pixel defining layer310may be formed only in the display region10. For example, the pixel defining layer310may cover both lateral portions of the lower electrode290, and may expose a portion of an upper surface of the lower electrode290. The pixel defining layer310may be formed using organic materials.

A light emitting layer330may be formed on the lower electrode290and the pixel defining layer310in the display region10and extend in the first direction D1, and may be formed in the peripheral region30. In an example embodiment, the light emitting layer330may be partially formed in an inner portion of the groove930, and the light emitting layer330in a portion where the groove930is located may be separated in a depth direction. Thus, the light emitting layer330may be separated in the peripheral region30. Thus, the light emitting layer330may be separated in the peripheral region30by the first and second spaces118and119.

The light emitting layer330may have a multi-layered structure including an EML, an HIL, an HTL, an ETL, an EIL, etc. In an example embodiment, the EML, the HIL, the HTL, the ETL, and the EIL may be formed in the peripheral region30. In an example embodiment, the HIL, the HTL, the ETL, and the EIL except for the EML may be formed in the peripheral region30.

The EML of the light emitting layer330may be formed using at least one of light emitting materials capable of generating different colors of light (e.g., a red color of light, a blue color of light, and a green color of light, etc.) according to sub-pixels. In another implementation, the EML of the light emitting layer330may generally generate a white color of light by stacking a plurality of light emitting materials capable of generating different colors of light such as a red color of light, a green color of light, a blue color of light, etc. In this case, a color filter may be formed on the light emitting layer330that is formed on the lower electrode290. The color filter may include at least one selected from a red color filter, a green color filter, and a blue color filter. In another implementation, the color filter may include a yellow color filter, a cyan color filter, and a magenta color filter. The color filter may be formed using a photosensitive resin, a color photoresist, etc.

An upper electrode340may be formed on the light emitting layer330. The upper electrode340may be formed to overlap the light emitting layer330in the display region10and extend in the first direction D1, and may be formed in the peripheral region30on the light emitting layer330. In an example embodiment, the upper electrode340may be partially formed in the inner portion of the groove930, and the upper electrode340in a portion where the groove930is located may be separated in the depth direction. Thus, the upper electrode340may be separated in the peripheral region30. Thus, the upper electrode340may be separated in the peripheral region30by the first and second spaces118and119.

The upper electrode340may be formed using a metal, a metal alloy, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof. In an example embodiment, the upper electrode340may have a multi-layered structure including a plurality of layers.

Accordingly, a light emitting structure200including the lower electrode290, the light emitting layer330, and the upper electrode340may be formed.

Referring toFIG. 15, a capping layer may be formed on the upper electrode340. The capping layer may be formed to overlap the upper electrode340in the display region10and extend in the first direction D1, and may be formed in the peripheral region30on the upper electrode340. In an example embodiment, the capping layer may be partially formed in the inner portion of the groove930, and the capping layer in a portion where the groove930is located may be separated in the depth direction. Thus, the capping layer may be separated in the peripheral region30. Thus, the capping layer may be separated in the peripheral region30by the first and second spaces118and119. The capping layer may protect the light emitting structure200, and may be formed using organic materials such as a triamine derivative, arylenediamine derivative, CBP, Alq3, etc.

A first TFE layer451may be formed in the display region10and the peripheral region30on the upper electrode340. The first TFE layer451may cover the upper electrode340in the display region10, and may be formed with a substantially uniform thickness along a profile of the upper electrode340and may extend in the peripheral region30. The first TFE layer451may be formed along a profile of the upper electrode340in the peripheral region30. Thus, the first TFE layer451may be continuously formed in a portion where the groove930is formed. In an example embodiment, the first TFE layer451may completely cover the groove930. Thus, the first TFE layer451may cover the first and second protruded portions116and117, and may be formed in the first and second spaces118and119and completely cover the light emitting layer330and the upper electrode340that are formed inside the groove930. Thus, the first TFE layer451may be in direct contact with the second organic film layer113in the first and second spaces118and119. The first TFE layer451may help prevent the light emitting structure200from being deteriorated by the permeation of moisture, water, oxygen, etc. In addition, the first TFE layer451may protect the light emitting structure200from external impacts. The first TFE layer451may be formed using inorganic materials having flexibility.

A second TFE layer452may be formed in the display region10on the first TFE layer451, and may not be formed in the peripheral region30. Thus, the second TFE layer452may be formed only in the display region10. The second TFE layer452may improve the flatness of the OLED device100, and may protect the light emitting structure200. The second TFE layer452may be formed using organic materials having the flexibility.

Referring toFIG. 16, a third TFE layer453may be formed in the display region10on the second TFE layer452and in the peripheral region30on the first TFE layer451. The third TFE layer453may cover the second TFE layer452in the display region10, and may be formed with a substantially uniform thickness along a profile of the second TFE layer452and may extend in the peripheral region30. The third TFE layer453may be formed with a substantially uniform thickness along a profile of the first TFE layer451in the peripheral region30. Thus, the third TFE layer453may be continuously formed in a portion where the groove930is formed. The third TFE layer453together with the first TFE layer451may help prevent the light emitting structure200from being deteriorated by the permeation of moisture, water, oxygen, etc. In addition, the third TFE layer453together with the first and second TFE layers451and452may protect the light emitting structure200from external impacts. The third TFE layer453may be formed using inorganic materials having the flexibility.

Accordingly, a TFE structure450including the first TFE layer451, the second TFE layer452, and the third TFE layer453may be formed. In another implementation, the TFE structure450may have five layers structure where first to fifth TFE layers are stacked or seven layers structure where first to seventh TFE layers are stacked.

A first insulation layer390may be formed in the display region10and the peripheral region30on the third TFE layer453. The first insulation layer390may cover the third TFE layer453in the display region10, and may be formed with a substantially uniform thickness along a profile of the third TFE layer453and may extend in the peripheral region30. The first insulation layer390may be formed with a substantially uniform thickness along a profile of the third TFE layer453in the peripheral region30. Thus, the first insulation layer390may be continuously formed in a portion where the first insulation layer390is formed. The first insulation layer390may be formed using organic materials or inorganic materials. In another implementation, the first insulation layer390may have a multi-layered structure including a plurality of insulation layers. For example, the insulation layers may have different thicknesses to each other or include different materials to each other.

Referring toFIG. 17, an organic insulation pattern490may be formed in the peripheral region30on the first insulation layer390. In an example embodiment, the organic insulation pattern490may be formed only in the peripheral region30. The organic insulation pattern490may be formed with a relatively high thickness in the peripheral region30on the first insulation layer390. In this case, the organic insulation pattern490may have a substantially flat upper surface, and a planarization process may be further performed on the organic insulation pattern490to implement the flat upper surface of the organic insulation pattern490. In another implementation, the organic insulation pattern490may be formed with a substantially uniform thickness along a profile of the first insulation layer390in the display region10on the first insulation layer390. The organic insulation pattern490may be formed using organic materials such as a photoresist, a polyacryl-based resin), a polyimide-based resin, a polyamide-based resin, a siloxane-based resin, an acryl-based resin, an epoxy-based resin.

Referring toFIG. 18, first touch screen electrodes382and second touch screen electrodes384may be formed in the display region10on the first insulation layer390(refer toFIG. 9). Each of the first touch screen electrodes382may extend in the second direction D2, and may be spaced apart from each other by the first direction D1. The second touch screen electrodes384may be spaced apart from each other in the second direction D2between adjacent two first touch screen electrodes382among the first touch screen electrodes382. For example, each of the first and second touch screen electrodes382and384may be formed using a carbon nano-tube (CNT), transparent conductive oxide, ITO, indium gallium zinc oxide (IGZO), ZnO, a graphene, Ag nanowire (AgNW), Cu, Cr, etc.

A second insulation layer395may be formed in the display region10on the first and second touch screen electrodes382and384. The second insulation layer395may cover the first and second touch screen electrodes382and384in the display region10, and may be formed with a substantially uniform thickness along a profile of the first and second touch screen electrodes382and384and may extend in the peripheral region30. The second insulation layer395may be formed along a profile of the organic insulation pattern490in the peripheral region30. Thus, the second insulation layer395may be in contact with an upper surface of the first insulation layer390in the display region10, and may be in contact with an upper surface of the organic insulation pattern490in the peripheral region30. The second insulation layer395may be formed using organic materials or inorganic materials. In another implementation, the second insulation layer395may have a multi-layered structure including a plurality of insulation layers. The insulation layers may have different thicknesses to each other or include different materials to each other.

Referring toFIG. 19, touch screen connection electrodes386may be formed in the display region10on the second insulation layer395(refer toFIG. 9). The touch screen connection electrodes386may electrically connect adjacent two second touch screen electrodes384in the first direction D1among the second touch screen electrodes384through a contact hole. For example, the touch screen connection electrodes386and the first and second touch screen electrodes382and384may be formed using same materials. In another implementation, the touch screen connection electrodes386may be formed using a metal, an alloy of a metal, metal nitride, conductive metal oxide, transparent conductive materials, etc. These may be used alone or in a suitable combination thereof.

A conductive pattern400may be formed in the peripheral region30on the second insulation layer395. In an example embodiment, to detect a damage of the second protruded portion117, the conductive pattern400may be formed to overlap the second protruded portion117of the groove930. In another implementation, the conductive pattern400may be formed to overlap the first protruded portion116of the groove930.

For example, the conductive pattern400on the groove930may be formed along a profile of the second protruded portion117of the groove930. The conductive pattern400may substantially surround the opening region20. The conductive pattern400may include a first sub-conductive pattern401and second sub-conductive patterns402(refer toFIG. 6). The first sub-conductive pattern401may have a plan shape of a partially opened circle including an open portion, and the second sub-conductive patterns402may extend from the open portion of the first sub-conductive pattern401in the second direction D2. In an example embodiment, the first sub-conductive pattern401and the second sub-conductive patterns402may be integrally formed at a same layer.

In another implementation, the first sub-conductive pattern401may be formed on the second sub-conductive patterns402, and the open portion of the first sub-conductive pattern401may be connected to a distal end of the second sub-conductive patterns402through a contact hole. Otherwise, the second sub-conductive patterns402may be formed on the first sub-conductive pattern401, and the open portion of the first sub-conductive pattern401may be connected to a distal end of the second sub-conductive patterns402through a contact hole.

The first sub-conductive pattern401may be formed to overlap the groove930. For example, the first sub-conductive pattern401may be formed to overlap the second protruded portion117of the groove930. In another implementation, the first sub-conductive pattern401may overlap the first protruded portion116of the groove930.

The conductive pattern400and the touch screen connection electrodes386may be simultaneously formed using same materials. In another implementation, the conductive pattern400and the first and second touch screen electrodes382and384may be simultaneously formed using same materials.

A protective insulation layer410may be formed in the display region10and the peripheral region30on the second insulation layer395, the touch screen connection electrodes386, and the conductive pattern400. The protective insulation layer410may be formed with a relatively high thickness on the second insulation layer395. In this case, the protective insulation layer410may have a substantially flat upper surface. In another implementation, the protective insulation layer410may cover the touch screen connection electrodes386and the conductive pattern400in the display region10and the peripheral region30on the second insulation layer395, and may be formed with a substantially uniform thickness along a profile of the touch screen connection electrodes386and the conductive pattern400. The protective insulation layer410may be formed using organic materials.

As described above, a touch screen structure380including the first insulation layer390, the first touch screen electrodes382, the second touch screen electrodes384, the second insulation layer395, the touch screen connection electrodes386, and the protective insulation layer410may be formed.

After the touch screen structure380is formed, a laser may be irradiated in the opening region20on the protective insulation layer410. In another implementation, a different etching process may be performed to expose the opening region20on the protective insulation layer410.

Referring toFIGS. 20 and 6, an opening910may be formed in the opening region20through the laser irradiation, and a functional module700may be formed in the opening910. In an example embodiment, the functional module700may be in contact with a side surface of the substrate110, a side surface of the light emitting layer330, a side surface of the upper electrode340, a side surface of the first TFE layer451, a side surface of the third TFE layer453, a side surface of the first insulation layer390, a side surface of the organic insulation pattern490, a side surface of the second insulation layer395, and a side surface of the protective insulation layer410in a boundary of the peripheral region30and the opening region20. For example, the functional module700may include a camera module, a face recognition sensor module, a pupil recognition sensor module, acceleration and geomagnetic sensor modules, proximity and infrared sensor modules, and a light intensity sensor module, etc. After the functional module700is formed, the rigid glass substrate105may be removed from the substrate110. Accordingly, the OLED device100illustrated inFIG. 6may be manufactured.

FIG. 21is a plan view illustrating an OLED device in accordance with an example embodiment, andFIG. 22is a partially enlarged plan view corresponding to region ‘13’ ofFIG. 21.FIG. 23is a partially enlarged plan view illustrating an example of a conductive pattern included in the OLED device ofFIG. 22, andFIG. 24is a cross-sectional view taken along lines I-I′ ofFIG. 22. An OLED device500illustrated inFIGS. 21, 22, and 24may have a configuration substantially the same as or similar to that of an OLED device100described with reference toFIGS. 1 through 9except for a conductive pattern1400. InFIGS. 21, 22, and 24, detailed descriptions for elements that are substantially the same as or similar to elements described with reference toFIGS. 1 through 9may not be repeated.

Referring toFIGS. 21, 22, and 24, the OLED device500may include a substrate110, a semiconductor element250, a planarization layer270, a light emitting structure200, a pixel defining layer310, a TFE structure450, a touch screen structure380, an organic insulation pattern490, a conductive pattern1400, a functional module700, etc. The substrate110may include a first organic film layer111, a first barrier layer112, a second organic film layer113, and a second barrier layer114. As the OLED device500has the display region10, the opening region20, the peripheral region30, and the pad region40, the substrate110may be divided into the display region10, the opening region20, the peripheral region30, and the pad region40. In addition, the touch screen structure380may include a first insulation layer390, a plurality of first touch screen electrodes382, a plurality of second touch screen electrodes384, a plurality of touch screen connection electrodes386, a second insulation layer395, and a protective insulation layer410.

The conductive pattern1400may be in the peripheral region30on the second insulation layer395. In an example embodiment, to detect a damage of the first and second protruded portions116and117, the conductive pattern1400may overlap the first and second protruded portions116and117of the groove930.

For example, the conductive pattern1400on the groove930may be disposed along a profile of the first and second protruded portions116and117of the groove930. As illustrated inFIG. 22, the conductive pattern1400may include a first sub-conductive pattern, second sub-conductive pattern, a third sub-conductive patterns, and a fourth sub-conductive pattern. The first sub-conductive pattern may have a plan shape of a partially opened circle including top and bottom open portions, and may overlap the second protruded portion117of the groove930. The second sub-conductive pattern may have a plan shape of a partially opened circle including a bottom open portion, and may overlap the first protruded portion116of the groove930. The third sub-conductive patterns may extend from the top open portion of the first sub-conductive pattern in the second direction D2. The fourth sub-conductive patterns may connect the bottom open portion of the first sub-conductive pattern and the bottom open portion of the second sub-conductive pattern. In an example embodiment, the first sub-conductive pattern, the second sub-conductive pattern, the third sub-conductive patterns, and the fourth sub-conductive pattern may be integrally formed at a same layer.

In an example embodiment, as illustrated inFIG. 23, the OLED device500may include a first conductive pattern400and a second conductive pattern600. The first conductive pattern400on the groove930may be disposed along a profile of the second protruded portion117of the groove930, and the second conductive pattern600on the groove930may be disposed along a profile of the first protruded portion116of the groove930. Thus, the first conductive pattern400may substantially surround the second conductive pattern600. The first conductive pattern400may include a first sub-conductive pattern and second sub-conductive patterns. A portion of the first sub-conductive pattern may have a plan shape of a partially opened circle including an open portion, and the second sub-conductive patterns may extend from the open portion of the first sub-conductive pattern in the second direction D2. In an example embodiment, the first sub-conductive pattern and the second sub-conductive patterns may be integrally formed at a same layer. In addition, the second conductive pattern600may include a third sub-conductive pattern and fourth sub-conductive patterns. A portion of the third sub-conductive pattern may have a plan shape of a partially opened circle including an open portion, and the fourth sub-conductive patterns may extend from the open portion of the first sub-conductive pattern in the second direction D2. In an example embodiment, the third sub-conductive pattern and the fourth sub-conductive patterns may be integrally formed at a same layer.

The OLED device500in accordance with an example embodiment may include the conductive pattern1400, the pad electrodes470, and the connection wiring370. Thus, the OLED device500may check whether the first and second protruded portions116and117is damaged. Accordingly, a defect ratio of the OLED device500may be reduced by the OLED device500checking whether the first and second protruded portions116and117is damaged.

FIG. 25is a cross-sectional view illustrating an OLED device in accordance with an example embodiment. An OLED device800illustrated inFIG. 25may have a configuration substantially the same as or similar to that of an OLED device500described with reference toFIGS. 21 through 24except for a second groove950and a third groove970. InFIG. 25, detailed descriptions for elements that are substantially the same as or similar to elements described with reference toFIGS. 21 through 24may not be repeated.

Referring toFIG. 25, the OLED device800may include a substrate110, a semiconductor element250, a planarization layer270, a light emitting structure200, a pixel defining layer310, a TFE structure450, a touch screen structure380, an organic insulation pattern490, a conductive pattern400, a functional module700, a block structure550, etc. The substrate110may include a first organic film layer111, a first barrier layer112, a second organic film layer113, and a second barrier layer114. As the OLED device800has the display region10, the opening region20, the peripheral region30, and the pad region40, the substrate110may be divided into the display region10, the opening region20, the peripheral region30, and the pad region40. In addition, the light emitting structure200may include a lower electrode290, a light emitting layer330, and an upper electrode340, and the TFE structure450may include a first TFE layer451, a second TFE layer452, and a third TFE layer453. Further, the touch screen structure380may include a first insulation layer390, a plurality of first touch screen electrodes382, a plurality of second touch screen electrodes384, a plurality of touch screen connection electrodes386, a second insulation layer395, and a protective insulation layer410.

First, second, and third grooves930,950, and970having enlarged lower portion may be formed. For example, in the substrate110, the first groove930may be formed in the peripheral region30, and the second the second groove950may be formed between the first groove930and the functional module700. The third groove970may be formed in the display region10. In addition, the second groove950may surround the functional module700, and the first groove930may surround the second groove950. The third groove970may surround the first groove930. In another implementation, at least one groove having an enlarged lower portion may be further formed between the second groove950and the functional module700and between the third groove970and the first groove930.

The OLED device800in accordance with an example embodiment may include the first through third grooves930,950, and970. Thus, the light emitting layer330and the upper electrode340may be readily separated due to the relatively large number of grooves having the enlarged lower portion. In addition, as the relatively large number of grooves having the enlarged lower portion are in the peripheral region30, the amount of an impact may be reduced by the relatively large number of grooves having the enlarged lower portion, when an external impact or a stress in a manufacturing process is transmitted to the substrate110in a direction from the opening region20into the display region10. Further, as the relatively large number of grooves having the enlarged lower portion are in the peripheral region30, a contact area of the first TFE layer451and the substrate110may be relatively increased in the peripheral region30. Accordingly, the OLED device800may help prevent the first TFE layer451from being separated from the substrate110.

The block structure550may be between the first groove930and the third groove970on the substrate110located in the peripheral region30. In an example embodiment, the block structure550may block a leakage of the second TFE layer452. The block structure550may include organic materials or inorganic materials. In an example embodiment, the block structure550may include organic materials.

The light emitting layer330may be on the pixel defining layer310and the lower electrode290in the display region10and extend in the first direction DE and may be in the peripheral region30on the substrate110and the block structure550. In an example embodiment, the light emitting layer330may be partially in an inner portion of the first through third grooves930,950, and970each, and the light emitting layer330in a portion where each of the first through third grooves930,950, and970is located may be separated in a depth direction. Thus, the light emitting layer330may be separated in the first through third grooves930,950, and970. Thus, the light emitting layer330may be separated in the peripheral region30by the first and second spaces118and119.

The upper electrode340may be on the light emitting layer330. The upper electrode340may overlap the light emitting layer330in the display region10and may extend in the first direction DE and may be in the peripheral region30on the light emitting layer330. In an example embodiment, the upper electrode340may be partially in the inner portion of the first through third grooves930,950, and970each, and the upper electrode340in a portion where each of the first through third grooves930,950, and970is located may be separated in the depth direction. Thus, the upper electrode340may be separated in each of the first through third grooves930,950, and970.

The first TFE layer451may be in the display region10and the peripheral region30on the upper electrode340. The first TFE layer451may cover the upper electrode340in the display region10, and may be disposed with a substantially uniform thickness along a profile of the upper electrode340and may extend in the peripheral region30. The first TFE layer451may be disposed along a profile of the upper electrode340in the peripheral region30. Thus, the first TFE layer451may be continuously disposed in a portion where each of the first through third grooves930,950, and970is formed. In an example embodiment, the first TFE layer451may completely cover each of the first through third grooves930,950, and970. Thus, the first TFE layer451may completely cover the light emitting layer330and the upper electrode340that are disposed inside each of the first through third grooves930,950, and970. Thus, the first TFE layer451may be in direct contact with the second organic film layer113in the first and second spaces118and119.

The second TFE layer452may be in the display region10and a portion of the peripheral region30on the first TFE layer451. In an example embodiment, the second TFE layer452may fill an inner portion of the third groove970, and may not be disposed inside the first groove930and the second groove950.

The third TFE layer453may be in the display region10on the second TFE layer452and in the peripheral region30on the first TFE layer451. The third TFE layer453may cover the second TFE layer452in the display region10, and may be disposed with a substantially uniform thickness along a profile of the second TFE layer452and may extend in the peripheral region30. The third TFE layer453may be disposed with a substantially uniform thickness along a profile of the first TFE layer451in the peripheral region30. Thus, the third TFE layer453may be continuously formed in a portion where the second groove950and the third groove970each are formed.

The first insulation layer390may be in the display region10and the peripheral region30on the third TFE layer453. The first insulation layer390may cover the third TFE layer453in the display region10, and may be disposed with a substantially uniform thickness along a profile of the third TFE layer453and may extend in the peripheral region30. The first insulation layer390may be disposed with a substantially uniform thickness along a profile of the third TFE layer453in the peripheral region30. Thus, the first insulation layer390may be continuously disposed in a portion where the second groove950and the third groove970each are formed.

The organic insulation pattern490may be in the peripheral region30on the first insulation layer390. The organic insulation pattern490may be disposed with a relatively high thickness in the peripheral region30and a portion of the display region10on the first insulation layer390. In this case, the organic insulation pattern490may have a substantially flat upper surface.

The conductive pattern1400may be in the peripheral region30on the second insulation layer395. In an example embodiment, to detect a damage of the first protruded portion116and the second protruded portion117, the conductive pattern1400may overlap the first and second protruded portions116and117of the first groove930. For example, the conductive pattern1400on the first groove930may be disposed along a profile of each of the first and second protruded portions116and117of the first groove930.

In an example embodiment, conductive patterns may be further disposed on a protruded portion of each of the second and third grooves950and970.

Example embodiments may be applied to various display devices including an OLED device. For example, example embodiments may be applied to vehicle-display device, a ship-display device, an aircraft-display device, portable communication devices, display devices for display or for information transfer, a medical-display device, etc.

By way of summation and review, a display device such as an OLED device may have a display region where an image is displayed and a non-display region in which gate drivers, data drivers, wirings, and functional modules (e.g., a camera module, a motion recognition sensor, etc.) are disposed. Blocking patterns (for blocking penetration of water, moisture, etc., into a portion of the display region adjacent to the functional module) may be formed adjacent to a functional module. Blocking patterns may be susceptible to damage from external impact or a stress in a manufacturing process, in which case a defect of a display pixel may occur.

As described above, example embodiments relate to an organic light emitting display device that may include a functional module in a portion of a display region. An OLED device according to an example embodiment may include a conductive pattern, pad electrodes, and connection wiring, and the OLED device may check whether the second protruded portion is damaged. Accordingly, as the OLED device checks whether the second protruded portion is damaged, a defect ratio of the OLED device may be reduced.