Organic light-emitting display device

Abstract

The present disclosure relates to an organic light-emitting display device, the organic light-emitting display device including: an active pattern disposed corresponding to a plurality of pixels and connected to each other along a first direction; a first initialization voltage line to which a first initialization voltage is applied; a second initialization voltage line to which a second initialization voltage different from the first initialization voltage is applied; an organic light-emitting diode; and a first transistor that applies the second initialization voltage to a first electrode of the organic light-emitting diode.

Description

Technical Field

[0001] Exemplary embodiments of the present invention relate to a display device. More specifically, exemplary embodiments of the present invention relate to an organic light emitting display device. Background Art

[0002] An organic light emitting display device uses an organic light emitting diode (“OLED”) to display an image. In an OLED, holes provided from an anode and electrons provided from a cathode are combined in a light emitting layer between the anode electrode and the cathode electrode to emit light.

[0003] An organic light emitting display device includes a plurality of pixels. In order to improve the display quality of the organic light emitting display device, various efforts have been made to improve the structure of the pixels or to implement the layout of the pixels. Summary of the Invention

[0004] One or more exemplary embodiments of the present invention provide an organic light emitting display device capable of improving display quality.

[0005] According to an exemplary embodiment of the present invention, an organic light emitting display device includes: an active pattern disposed corresponding to a plurality of pixels and connected to each other along a first direction; a first initialization voltage line to which a first initialization voltage is applied; a second initialization voltage line to which a second initialization voltage different from the first initialization voltage is applied; an organic light emitting diode; and a first transistor that applies the second initialization voltage to a first electrode of the organic light emitting diode.

[0006] In an exemplary embodiment, the first transistor may include a first_first transistor and a first_second transistor. A first electrode of the first_first transistor may be electrically connected to a first electrode of the first_second transistor. A second electrode of the first_first transistor may be electrically connected to a second electrode of the first_second transistor. A second initialization signal may be applied to a gate electrode of the first_first transistor and a gate electrode of the first_second transistor.

[0007] In an exemplary embodiment, the first_first transistor and the first_second transistor may be disposed adjacent to each other.

[0008] In an exemplary embodiment, the active patterns may be physically connected to each other in the pixels of the plurality of pixels. The active pattern may include a channel region of the first_first transistor and a channel region of the first_second transistor.

[0009] In an exemplary embodiment, the organic light emitting display device may further include: an initialization line that extends in the first direction and to which a first initialization signal or a second initialization signal is applied.

[0010] In an exemplary embodiment, the first-first transistor and the first-second transistor may overlap with the initialization line.

[0011] In an exemplary embodiment, the organic light emitting display device may further include: a second transistor electrically connected to a first power supply and the first electrode of the organic light emitting diode, and applying a driving current corresponding to a data signal to the organic light emitting diode; a capacitor electrically connected between the gate electrode of the second transistor and the first power supply; and a third transistor applying the first initialization voltage to the gate electrode of the second transistor and the capacitor in response to the first initialization signal.

[0012] In an exemplary embodiment, the organic light emitting display device may further include: a data line that extends in a second direction intersecting the first direction and to which the data signal is applied; a fourth transistor electrically connected to the first electrode of the second transistor and the data line; and a fifth transistor electrically connected to the gate electrode of the second transistor and the second electrode of the second transistor.

[0013] In an exemplary embodiment, the plurality of pixels may be arranged in a matrix form in the first direction and a second direction intersecting the first direction. The active patterns of the plurality of pixels in the first direction may be connected to each other, and the active patterns of the plurality of pixels in the second direction may include portions that are disconnected from each other.

[0014] In an exemplary embodiment, the first transistor may further include a first-first transistor and a first-second transistor. The source electrode of the first-first transistor may be electrically connected to the source electrode of the first-second transistor. The drain electrode of the first-first transistor may be electrically connected to the drain electrode of the first-second transistor. A second initialization signal may be applied to the gate electrode of the first-first transistor and the gate electrode of the first-second transistor. The first-first transistor and the first-second transistor may be arranged adjacent to each other in the first direction.

[0015] According to an exemplary embodiment of the present invention, an organic light emitting display device includes: a substrate; an active layer including active patterns disposed on the substrate and connected to each other corresponding to at least two pixels; a first gate insulating layer disposed on the substrate on which the active layer is provided; a first gate layer disposed on the first gate insulating layer; a second gate insulating layer disposed on the first gate insulating layer on which the first gate layer is provided; a second gate layer disposed on the second gate insulating layer; an interlayer insulating layer disposed on the second gate insulating layer on which the second gate layer is provided; and a data layer disposed on the interlayer insulating layer.

[0016] In an exemplary embodiment, the first gate layer may include: an initialization line to which a first initialization signal or a second initialization signal is applied; a scan line to which a scan signal is applied; and an emission control line to which an emission control signal is applied.

[0017] In an exemplary embodiment, the second gate layer may include: a first initialization voltage line to which a first initialization voltage is applied; and a second initialization voltage line to which a second initialization voltage is applied.

[0018] In an exemplary embodiment, the data layer may include: a data line to which a data signal is applied; and a first power supply line to which a first power supply voltage is applied.

[0019] In an exemplary embodiment, the organic light emitting display device may further include: a first_first transistor and a first_second transistor that apply the second initialization voltage to a first electrode of the organic light emitting diode in response to the second initialization signal.

[0020] In an exemplary embodiment, the organic light emitting display device may further include: a second transistor electrically connected to a first power supply and the first electrode of the organic light emitting diode and applying a driving current corresponding to the data signal to the organic light emitting diode; a capacitor electrically connected between a gate electrode of the second transistor and the first power supply; and a third transistor applying the first initialization voltage to the gate electrode of the second transistor and the capacitor in response to a first initialization signal.

[0021] In an exemplary embodiment, the data layer may further include a connection electrode. The connection electrode may be connected to the second initialization voltage line and the first_first transistor and the first_second transistor.

[0022] In an exemplary embodiment, the first_first transistor and the first_second transistor may overlap with the initialization line.

[0023] In an exemplary embodiment, a plurality of pixels may be arranged in a matrix form in a first direction and a second direction intersecting the first direction. The active patterns of the plurality of pixels in the first direction may be connected to each other, and the active patterns of the plurality of pixels in the second direction may include portions that are disconnected from each other.

[0024] According to an exemplary embodiment of the present invention, an organic light emitting display device includes: an organic light emitting diode; and a first_first transistor and a first_second transistor, the first_first transistor and the first_second transistor apply an organic light emitting diode initialization voltage to a first electrode of the organic light emitting diode in response to an organic light emitting diode initialization signal. A first electrode and a second electrode of the first_first transistor are electrically connected to a first electrode and a second electrode of the first_second transistor, respectively. A gate electrode of the first_first transistor is electrically connected to a gate electrode of the first_second transistor.

[0025] According to an exemplary embodiment of the present invention, an organic light emitting display device includes: an active pattern disposed corresponding to a plurality of pixels and connected to each other along a first direction; a first initialization voltage line to which a first initialization voltage is applied; a second initialization voltage line to which a second initialization voltage different from the first initialization voltage is applied; an OLED; and an OLED initialization transistor that applies the second initialization voltage to an anode electrode of the OLED.

[0026] Since the active patterns of the active layer are connected corresponding to a plurality of pixels, even when static current flows during a manufacturing process or use, etc., static electricity is dispersed, and the degree of characteristic change of the active pattern or the degree of damage to the active pattern is reduced, thereby scattering of the first transistor to the 7b transistor included in the pixel can be reduced. Therefore, the display quality of the organic light emitting display device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and other features of the present invention will become more apparent by referring to the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, in which:

[0028] Figure 1is a block diagram showing an exemplary embodiment of an organic light emitting display device according to the present invention;

[0029] Figure 2 is a circuit diagram showing an example of a pixel included in the Figure 1 organic light emitting display device;

[0030] Figure 3 is a plan view showing the layout of the pixels of the Figure 1 and Figure 2 organic light emitting display device;

[0031] Figures 4A to 4D is a plan view showing the active layer, the first gate layer, the second gate layer, and the data layer of the Figure 1 organic light emitting display device, respectively;

[0032] Figure 5 is a Figure 3 cross-sectional view of the organic light emitting display device;

[0033] Figure 6 is a block diagram showing an exemplary embodiment of an electronic device;

[0034] Figure 7A is a diagram showing an example in which the Figure 6 electronic device is implemented as a television; and

[0035] Figure 7B is a diagram showing an example in which the Figure 6 electronic device is implemented as a smart phone. Detailed Description

[0036] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

[0037] It will be understood that when an element is referred to as being "on" another element, the element may be directly on the other element, or there may be an intermediate element between the element and the other element. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element.

[0038] It will be understood that although the terms "first", "second", "third", etc. may be used herein to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Thus, without departing from the teachings herein, the "first element", "first component", "first region", "first layer", or "first part" discussed below may be referred to as a second element, second component, second region, second layer, or second part.

[0039] The terms used in this document are for the purpose of describing specific embodiments only and are not intended to be limiting. As used herein, unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms, including "at least one". "Or" means "and / or". As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be further understood that when used in this specification, the term "comprises" specifies the presence of the stated features, regions, wholes, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, regions, wholes, steps, operations, elements, components, and / or groups thereof.

[0040] In addition, relative terms such as "lower" or "bottom" and "upper" or "top" may be used herein to describe the relationship of one element to another as shown in the figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the figures. For example, if the device in one figure is flipped, an element described as on the "lower" side of other elements will then be positioned on the "upper" side of the other elements. Thus, depending on the specific orientation in the figure, the exemplary term "lower" can encompass both the "lower" and "upper" orientations. Similarly, if the device in one figure is flipped, an element described as "beneath" or "below" other elements will then be positioned "above" the other elements. Thus, the exemplary terms "beneath" or "below" can encompass both the upper and lower orientations.

[0041] For ease of description, spatial relative terms such as "beneath", "below", "lower", "above", "upper", etc. may be used herein to describe the relationship of one element or feature to another (or other elements or features) as shown in the figures. It will be understood that spatial relative terms are intended to encompass different orientations of the device during use or operation in addition to the orientation depicted in the figures. For example, if the device in the figure is flipped, an element described as "beneath" or "below" other elements or features will then be positioned "above" the other elements or features. Thus, the exemplary term "beneath" can encompass both the upper and lower orientations. The device may be otherwise positioned (rotated 90 degrees or in other orientations), and the spatial relative descriptors used herein will be interpreted accordingly.

[0042] Taking into account the measurements being discussed and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system), as used herein, "about" or "approximately" includes the stated value and represents within an acceptable deviation range for the particular value as determined by a person of ordinary skill in the art. For example, "about" can represent within one or more standard deviations, or within ±30%, 20%, 10%, 5% of the stated value.

[0043] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by a person of ordinary skill in the art to which this disclosure pertains. It will also be understood that terms, such as those defined in a general dictionary, should be interpreted as having a meaning consistent with their meaning in the relevant art and the context of this disclosure, and will not be interpreted in an idealized or overly formal sense.

[0044] In this document, exemplary embodiments are described with reference to cross-sectional views of schematic diagrams of idealized embodiments. As such, variations in the shape of the illustrations due to, for example, manufacturing techniques and / or tolerances are anticipated. Therefore, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but will include, for example, shape deviations resulting from manufacturing. For example, regions shown or described as flat may generally have rough and / or non-linear features. Moreover, the sharp corners shown may be chamfered. Thus, the regions shown in the figures are substantially schematic, and the shape of the regions is not intended to show the exact shape of the regions and is not intended to limit the scope of the present disclosure.

[0045] Figure 1 is a block diagram illustrating an organic light emitting display device according to an exemplary embodiment of the present invention.

[0046] Referring to Figure 1 , the organic light emitting display device 1000 may include a display panel 100, a scan driver 200, a data driver 300, an emission control driver 400, a power supply 450, and a controller 470.

[0047] The display panel 100 may include pixels PX. In an exemplary embodiment, for example, since the pixels PX are arranged at positions corresponding to the intersections of the scan lines SL1 to SLn and the data lines DL1 to DLm, the display panel 100 may include n×m pixels PX, where n and m are natural numbers.

[0048] The scan driver 200 may provide scan signals to the pixels PX via the scan lines SL1 to SLn based on a first control signal CTL1.

[0049] The data driver 300 may supply data signals to the pixels PX via the data lines DL1 to DLm based on the second control signal CTL2.

[0050] The emission control driver 400 may supply emission control signals to the pixels PX via the emission control lines EM1 to EMn based on the third control signal CTL3.

[0051] The power supply 450 may supply voltages such as a first voltage ELVDD, a second voltage ELVSS, a first initialization voltage VINT1, a second initialization voltage VINT2, etc. The voltage level of the second voltage ELVSS may be lower than the voltage level of the first voltage ELVDD. The power supply 450 may supply the first voltage ELVDD to the first power terminal of the pixel PX and selectively supply the first voltage ELVDD or the second voltage ELVSS to the second power terminal of the pixel PX. Here, the second power terminal of the pixel PX may be connected to the cathode electrode of the OLED. The first initialization voltage VINT1 and the second initialization voltage VINT2 may have voltage levels between the first voltage ELVDD and the second voltage ELVSS. The voltage level of the first initialization voltage VINT1 may be higher than the voltage level of the second initialization voltage VINT2.

[0052] The controller 470 may control the scan driver 200, the data driver 300, the emission control driver 400, and the power supply 450. The controller 470 may supply the first control signal CTL1 to the scan driver 200 to control the scan driver 200. The controller 470 may supply the second control signal CTL2 to the data driver 300 to control the data driver 300. The controller 470 may supply the third control signal CTL3 to the emission control driver 400 to control the emission control driver 400. The controller 470 may supply the fourth control signal CTL4 to the power supply 450 to control the power supply 450.

[0053] Figure 2 is a circuit diagram showing Figure 1 an example of a pixel included in an organic light emitting display device.

[0054] Referring to Figure 2, a pixel PX may include a plurality of transistors T1 to T7a and T7b and a driving capacitor C. In an exemplary embodiment, for example, a first transistor T1 may be connected between a first voltage ELVDD and an anode electrode of an organic light-emitting diode (“OLED”) and may supply a driving current corresponding to a data signal Vdata to the OLED. A second transistor T2 may be connected between a first electrode of the first transistor T1 and a data line. A third transistor T3 may be connected between a gate electrode and a second electrode of the first transistor T1. A fourth transistor T4 may be connected between a first initialization voltage VINT1 and the gate electrode of the first transistor T1. A fifth transistor T5 may be connected between the first voltage ELVDD and the first electrode of the first transistor T1. A sixth transistor T6 may be connected between the second electrode of the first transistor T1 and the anode electrode of the OLED. The 7a-th transistor T7a and the 7b-th transistor T7b may be connected between a second initialization voltage VINT2 and the anode electrode of the OLED. The gate electrode of the first transistor T1 may be connected to a first node N1, and the first node N1 is connected to the driving capacitor C, the third transistor T3, and the fourth transistor T4.

[0055] Specifically, the fourth transistor T4 may apply the first initialization voltage VINT1 to the driving capacitor C and the gate electrode of the first transistor T1 in response to a first initialization signal GI to reset the driving capacitor C and the gate electrode of the first transistor T1 to the first initialization voltage VINT1. That is, the fourth transistor T4 may be an initialization transistor.

[0056] The 7a-th transistor T7a and the 7b-th transistor T7b may be connected to a second initialization signal GB to reset the voltage of the anode electrode of the OLED to the second initialization voltage VINT2. The 7a-th transistor T7a and the 7b-th transistor T7b may apply the second initialization voltage VINT2 to the anode electrode of the OLED in response to the second initialization signal GB. That is, the 7a-th transistor T7a and the 7b-th transistor T7b may be a first OLED initialization transistor and a second OLED initialization transistor, respectively.

[0057] Here, the 7a-th transistor T7a and the 7b-th transistor T7b may be connected in parallel with each other. That is, the gate electrode of the 7a-th transistor T7a and the gate electrode of the 7b-th transistor T7b may be connected to each other, the first electrode of the 7a-th transistor T7a and the first electrode of the 7b-th transistor T7b may be connected to each other, and the second electrode of the 7a-th transistor T7a and the second electrode of the 7b-th transistor T7b may be connected to each other.

[0058] The second transistor T2 may apply the data signal Vdata to the first transistor T1 in response to a scan signal GW.

[0059] The third transistor T3 can compensate for the threshold voltage of the first transistor T1 in response to a scan signal GW by connecting the gate electrode and the drain electrode of the first transistor T1 (i.e., diode-connected the first transistor T1). Since the second transistor T2 and the third transistor T3 can receive the scan signal GW, a data signal Vdata can be applied while compensating for the threshold voltage of the first transistor T1.

[0060] The first transistor T1 can provide a driving current corresponding to the data signal Vdata to the OLED.

[0061] The sixth transistor T6 can be located between the second electrode of the first transistor T1 and the anode electrode of the OLED. The sixth transistor T6 can control the light emission of the OLED in response to an emission control signal EM.

[0062] Although Figure 2 the exemplary embodiments describe that the pixel PX includes the first transistor T1 to the seventh-b transistor T7b and a driving capacitor C, the pixel PX can be implemented in various structures.

[0063] Figure 3 is a plan view showing Figure 1 and Figure 2 the layout of the pixels of the organic light-emitting display device. Figures 4A to 4D is a plan view showing each Figure 1 the active layer, the first gate layer, the second gate layer, and the data layer of the organic light-emitting display device. Figure 5 is Figure 3 a cross-sectional view of the organic light-emitting display device.

[0064] Referring to Figure 3 、 Figure 4A 、 Figure 4B 、 Figure 4C 、 Figure 4D and Figure 5 , the organic light-emitting display device may include a substrate 100, a buffer layer 110, an active layer, a first gate insulating layer 120, a first gate layer, a second gate insulating layer 130, a second gate layer, an interlayer insulating layer 140, a data layer, a via layer 150, a light-emitting structure 160, a pixel defining layer PDL, and a thin film encapsulation layer 190.

[0065] A substrate 100 including a transparent insulating material or an opaque insulating material may be provided. In an exemplary embodiment, for example, the substrate 100 may 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. In an alternative exemplary embodiment, the substrate 100 may include a flexible transparent material, such as a flexible transparent resin substrate (e.g., a polyimide substrate).

[0066] The buffer layer 110 may be disposed on the substrate 100. The buffer layer 110 may prevent metal atoms and / or impurities from diffusing from the substrate 100 into the active layer. Additionally, the buffer layer 110 may control the heat transfer rate in the crystallization process for forming the active pattern, thereby obtaining a substantially uniform active layer.

[0067] The active layer may be disposed on the buffer layer 110. The active layer may include a plurality of active patterns. Each of the active patterns may be arranged corresponding to a plurality of pixels along the first direction D1, and may form a wiring physically connected in the first direction D1. The active patterns may be disconnected from each other in the second direction D2 intersecting the first direction D1.

[0068] The active pattern may include amorphous silicon or polycrystalline silicon. In an exemplary embodiment, for example, the active pattern may include an oxide containing at least one of indium (In), gallium (Ga), tin (Sn), zirconium (Zr), vanadium (V), hafnium (Hf), cadmium (Cd), germanium (Ge), chromium (Cr), titanium (Ti), and zinc (Zn). The active pattern ACT may include a source region S and a drain region D doped with impurities and a channel region C disposed between the source region S and the drain region D of each of the first transistor T1, the second transistor T2, the third transistor T3, the fourth transistor T4, the fifth transistor T5, the sixth transistor T6, the 7a transistor T7a, and the 7b transistor T7b (refer to Figure 5 ).

[0069] The first gate insulating layer 120 may be disposed on the buffer layer 110 on which the active layer is provided. The first gate insulating layer 120 may be uniformly disposed on the buffer layer 110 along the contour of the active layer. In an exemplary embodiment, for example, the first gate insulating layer 120 may include a silicon compound, a metal oxide, etc.

[0070] The first gate layer may be disposed on the first gate insulating layer 120. The first gate layer may include the first gate electrode GE1 of the first transistor T1 ( Figure 5 GE of the sixth transistor T6 in), the initialization line GI / GB, the scan line GW, and the emission control line EM (for ease of description, the signal line and the signal transmitted through the signal line may be represented by the same reference numeral, for example, the initialization line GI / GB and the initialization signal GI / GB transmitted through the initialization line GI / GB). In an exemplary embodiment, for example, metals, alloys, metal nitrides, conductive metal oxides, transparent conductive materials, etc. may be used to provide the first gate layer.

[0071] The initialization line GI / GB may extend in the first direction D1. The first initialization signal GI or the second initialization signal GB may be applied to the initialization line GI / GB.

[0072] The scan line GW can extend in the first direction D1. The scan line GW can be disposed between the initialization line GI / GB and the emission control line EM. A scan signal GW can be applied to the scan line GW.

[0073] The emission control line EM can extend in the first direction D1. An emission control signal EM can be applied to the emission control line EM.

[0074] The second gate insulating layer 130 can be disposed on the first gate insulating layer 120 on which the first gate layer is provided. The second gate insulating layer 130 can be uniformly disposed on the first gate insulating layer 120 along the contour of the first gate layer. For example, the second gate insulating layer 130 can include a silicon compound, a metal oxide, etc.

[0075] The second gate layer can be disposed on the second gate insulating layer 130. The second gate layer can include a first initialization voltage VINT1 line, a second initialization voltage VINT2 line, and a storage electrode CSTE. Metals, alloys, metal nitrides, conductive metal oxides, or transparent conductive materials can be used to provide the second gate layer.

[0076] The first initialization voltage VINT1 line can extend in the first direction D1. The first initialization voltage VINT1 can be applied to the first initialization voltage VINT1 line.

[0077] The second initialization voltage VINT2 line can extend in the first direction D1. The second initialization voltage VINT2 can be applied to the second initialization voltage VINT2 line.

[0078] The storage electrode CSTE can be disposed to overlap with the first gate electrode GE1 to form a driving capacitor C with the first gate electrode GE1.

[0079] The interlayer insulating layer 140 can be disposed on the second gate insulating layer 130 on which the second gate layer is provided. In an exemplary embodiment, the second gate insulating layer 130 can have a relatively large thickness to sufficiently cover the active pattern, such that the second gate insulating layer 130 can have a substantially horizontal surface, for example. In an exemplary embodiment, the interlayer insulating layer 140 can be uniformly disposed on the second gate insulating layer 130 along the contour of the second gate layer. Organic insulating materials or inorganic insulating materials can be used to provide the interlayer insulating layer 140. The interlayer insulating layer 140 can include multiple layers.

[0080] The data layer can be disposed on the interlayer insulating layer 140. The data layer can include a data signal Vdata line, a first voltage ELVDD line, a first connection electrode CE1, a second connection electrode CE2, a third connection electrode CE3, and a via contact electrode VC.

[0081] The data signal Vdata line can extend in the second direction D2. The data signal Vdata can be applied to the data signal Vdata line. The data signal Vdata line can be electrically connected to the active layer through a contact hole defined by passing through the interlayer insulating layer 140, the second gate insulating layer 130, and the first gate insulating layer 120.

[0082] The first voltage ELVDD line can extend in the second direction D2. The first voltage ELVDD can be applied to the first voltage ELVDD line. The first voltage ELVDD line can be electrically connected to the active layer and the second gate electrode through a contact hole defined by passing through the interlayer insulating layer 140, the second gate insulating layer 130, and the first gate insulating layer 120.

[0083] The first connection electrode CE1 can be electrically connected to the active layer and the second gate layer through a contact hole defined by passing through the interlayer insulating layer 140, the second gate insulating layer 130, and the first gate insulating layer 120. Accordingly, the first connection electrode CE1 can be connected to the first initialization voltage VINT1 line and the fourth transistor T4.

[0084] The second connection electrode CE2 can be electrically connected to the active layer and the second gate layer through a contact hole defined by passing through the interlayer insulating layer 140, the second gate insulating layer 130, and the first gate insulating layer 120. Accordingly, the second connection electrode CE2 can be connected to the second initialization voltage VINT2 line and the 7a transistor T7a and the 7b transistor T7b.

[0085] The third connection electrode CE3 can be electrically connected to the active layer and the first gate layer through a contact hole defined by passing through the interlayer insulating layer 140, the second gate insulating layer 130, and the first gate insulating layer 120. Accordingly, the third connection electrode CE3 can be connected to the first transistor T1 and the third transistor T3.

[0086] The via contact electrode VC can be electrically connected to the active layer through a contact hole defined by passing through the interlayer insulating layer 140, the second gate insulating layer 130, and the first gate insulating layer 120. That is, the via contact electrode VC can be connected to the sixth transistor T6.

[0087] The through layer 150 may be disposed on the interlayer insulating layer 140 on which the data layer is provided. The through layer 150 may have a single-layer structure or a multi-layer structure including at least two insulating films. The through layer 150 may be provided using an organic material. In an exemplary embodiment, for example, the through layer 150 may include a photoresist, an acryl-based resin, a polyimide-based resin, a polyamide-based resin, a silicone-based resin, etc. In an exemplary embodiment, an inorganic material such as a silicon compound, a metal, a metal oxide, etc. may be used to provide the through layer 150.

[0088] The light-emitting structure 160 may include a first electrode 161, a light-emitting layer 162, and a second electrode 163.

[0089] The first electrode 161 may be disposed on the through layer 150. Depending on the emission type of the display device, the first electrode 161 may include a reflective material or a transmissive material. In an exemplary embodiment, for example, the following materials may be used to provide the first electrode 161: aluminum, an alloy including aluminum, aluminum nitride, silver, an alloy including silver, tungsten, tungsten nitride, copper, an alloy including copper, nickel, an alloy including nickel, chromium, chromium nitride, molybdenum, an alloy including molybdenum, titanium, titanium nitride, platinum, tantalum, tantalum nitride, neodymium, scandium, strontium ruthenium oxide, zinc oxide, indium tin oxide, tin oxide, indium oxide, gallium oxide, indium zinc oxide, etc. These materials may be used alone or in combination of these materials. In an exemplary embodiment, the first electrode 161 may have a single-layer structure or a multi-layer structure, and the single-layer structure or the multi-layer structure may include a metal film, an alloy film, a metal nitride film, a conductive metal oxide film, and / or a transparent conductive film.

[0090] The pixel defining layer PDL may be disposed on the through layer 150 on which the first electrode 161 is provided. The pixel defining layer PDL may be provided using an organic material. In an exemplary embodiment, for example, the pixel defining layer PDL may include a photoresist, an acryl-based resin, a polyimide-based resin, a polyamide-based resin, a silicone-based resin, etc. In an exemplary embodiment, an opening exposing the first electrode 161 may be defined by etching the pixel defining layer PDL. The emission region and the non-emission region of the display device may be defined through the opening of the pixel defining layer PDL. In an exemplary embodiment, for example, the portion where the opening of the pixel defining layer PDL is located may correspond to the emission region, and the non-emission region may correspond to the portion adjacent to the opening of the pixel defining layer PDL.

[0091] The light-emitting layer 162 may be disposed on the first electrode 161 exposed through the opening of the pixel defining layer PDL. Additionally, the light-emitting layer 162 may extend on the sidewalls of the opening of the pixel defining layer PDL. In an exemplary embodiment, the light-emitting layer 162 may include an organic light-emitting layer (“EL”), a hole injection layer (“HIL”), a hole transport layer (“HTL”), an electron transport layer (“ETL”), an electron injection layer (“EIL”), etc. In an exemplary embodiment, except for the organic light-emitting layer, the HIL, the hole transport layer, the electron transport layer, and the electron injection layer may be provided together corresponding to a plurality of pixels. In an exemplary embodiment, a light-emitting material may be used to provide a plurality of ELs, which are used to generate different colors of light such as red light, green light, and blue light according to the color pixels of the display device. In an exemplary embodiment, the EL of the light-emitting layer 162 may include a plurality of stacked light-emitting materials for generating red light, green light, and blue light, so as to emit white light. Here, the elements providing the light-emitting layer 162 are provided together corresponding to a plurality of pixels, and each pixel may be divided by a color filter layer.

[0092] The second electrode 163 may be disposed on the pixel defining layer PDL and the light-emitting layer 162. According to the emission type of the display device, the second electrode 163 may include a transmissive material or a reflective material. In an exemplary embodiment, for example, the following materials may be used to provide the second electrode 163: aluminum, an alloy including aluminum, aluminum nitride, silver, an alloy including silver, tungsten, tungsten nitride, copper, an alloy including copper, nickel, an alloy including nickel, chromium, chromium nitride, molybdenum, an alloy including molybdenum, titanium, titanium nitride, platinum, tantalum, tantalum nitride, neodymium, scandium, strontium ruthenium oxide, zinc oxide, indium tin oxide, tin oxide, indium oxide, gallium oxide, indium zinc oxide, etc. These materials may be used alone or in combination of these materials. In an exemplary embodiment, the second electrode 163 may also have a single-layer structure or a multi-layer structure, and the single-layer structure or the multi-layer structure may include a metal film, an alloy film, a metal nitride film, a conductive metal oxide film, and / or a transparent conductive film.

[0093] The thin film encapsulation layer 190 may be disposed on the second electrode 163. The thin film encapsulation layer 190 may prevent moisture and oxygen from infiltrating from the outside. The thin film encapsulation layer 190 may include a first inorganic layer, an organic layer, and a second inorganic layer. The first inorganic layer, the organic layer, and the second inorganic layer may be sequentially stacked on the second electrode 163.

[0094] Here, the thin film encapsulation layer 190 may include at least one organic layer and at least one inorganic layer. The at least one organic layer and the at least one inorganic layer may be stacked alternately with each other. In the illustrated exemplary embodiment, the thin film encapsulation layer 190 includes a first inorganic layer and a second inorganic layer and one organic layer between the first inorganic layer and the second inorganic layer, but the present invention is not limited thereto.

[0095] Here, a plurality of pixels may be arranged in a matrix form in a first direction D1 and a second direction D2 intersecting the first direction D1. The 7a-th transistor T7a and the second OLED initialization transistor as the 7b-th transistor T7b may be disposed adjacent to each other in the first direction D1. In addition, the 7a-th transistor T7a and the 7b-th transistor T7b may be disposed adjacent to each other in the first direction D1 with respect to the fourth transistor T4 of adjacent pixels in the second direction D2.

[0096] According to the exemplary embodiment shown, since the active pattern to which the active layer is connected corresponding to a plurality of pixels, even when static current flows during a manufacturing process or use, etc., static electricity is dispersed, and the degree of characteristic variation of the active pattern or the degree of damage to the active pattern is reduced, thereby scattering of the first transistor T1 to the 7b-th transistor T7b can be reduced. Accordingly, the display quality of the organic light emitting display device can be improved.

[0097] Figure 6 is a block diagram showing an electronic device according to an exemplary embodiment. Figure 7A is a diagram showing an example in which Figure 6 the electronic device is implemented as a television set. Figure 7B is a diagram showing an example in which Figure 6 the electronic device is implemented as a smart phone.

[0098] Referring to Figures 6 to 7B , the electronic device 500 may include a processor 510, a memory device 520, a storage device 530, an input / output (“I / O”) device 540, a power supply 550, and a display device (e.g., an organic light emitting display device) 560. Here, the display device (e.g., an organic light emitting display device) 560 may correspond to Figure 1 the display device 1000. In addition, the electronic device 500 may further include a plurality of ports for communicating with a video card, a sound card, a memory card, a universal serial bus (“USB”) device, other electronic devices, etc. In the exemplary embodiment, as Figure 7A shown in Figure 7B , the electronic device 500 may be implemented as a television set. In another exemplary embodiment, as

[0099] Figure 7B shown in

[0099] Figure 7B , the electronic device 500 may be implemented as a smart phone. However, the electronic device 500 is not limited thereto. In the exemplary embodiment, for example, the electronic device 500 may be implemented as a cellular phone, a video phone, a smart tablet computer, a smart watch, a tablet personal computer (“PC”), a car navigation system, a computer monitor, a laptop computer, a head-mounted (e.g., mounted) display (“HMD”), etc.

[0099] The processor 510 may perform various computing functions. In an exemplary embodiment, for example, the processor 510 may be a microprocessor, a central processing unit (“CPU”), an application processor (“AP”), etc. In an exemplary embodiment, for example, the processor 510 may be coupled to other components via an address bus, a control bus, a data bus, etc. Further, the processor 510 may be coupled to an expansion bus such as a Peripheral Component Interconnect (“PCI”) bus. The memory device 520 may store data for the operation of the electronic device 500. In an exemplary embodiment, for example, the memory device 520 may include: at least one non-volatile memory device such as an erasable programmable read-only memory (“EPROM”) device, an electrically erasable programmable read-only memory (“EEPROM”) device, a flash memory device, a phase change random access memory (“PRAM”) device, a resistive random access memory (“RRAM”) device, a nano floating gate memory (“NFGM”) device, a polymer random access memory (“PoRAM”) device, a magnetic random access memory (“MRAM”) device, a ferroelectric random access memory (“FRAM”) device, etc.; and / or at least one volatile memory device such as a dynamic random access memory (“DRAM”) device, a static random access memory (“SRAM”) device, a mobile DRAM device, etc. In an exemplary embodiment, for example, the storage device 530 may include a solid state drive (“SSD”) device, a hard disk drive (“HDD”) device, a CD-ROM device, etc. In an exemplary embodiment, the I / O device 540 may include: input devices such as a keyboard, a keypad, a mouse device, a touchpad, a touch screen, etc.; and output devices such as a printer, a speaker, etc. The power supply 550 may supply power for the operation of the electronic device 500.

[0100] A display device (e.g., an organic light emitting display device) 560 may be coupled to other components via a bus or other communication link. In an exemplary embodiment, the display device (e.g., an organic light emitting display device) 560 may be included in the I / O device 540. As described above, the organic light emitting display device may include: active patterns corresponding to a plurality of pixel arrangements and connected to each other in a first direction, a first initialization voltage line to which a first initialization voltage is applied, a second initialization voltage line to which a second initialization voltage different from the first initialization voltage is applied, an OLED, and an OLED initialization transistor that applies the second initialization voltage to the anode electrode of the OLED.

[0101] The present invention can be applied to an organic light emitting display device and various electronic devices including the organic light emitting display device. In an exemplary embodiment, for example, the present invention can be applied to a mobile phone, a smart phone, a video phone, a smart tablet computer, a smart watch, a tablet personal computer, a car navigation system, a television set, a computer monitor, a notebook computer, a head-mounted display, and the like.

[0102] The foregoing is a description of the present invention and is not to be construed as limiting the present invention. Although exemplary embodiments of the present invention have been described, it will be readily understood by those skilled in the art that many modifications can be made in the exemplary embodiments without substantially departing from the novel teachings and advantages of the present invention. Accordingly, all such modifications are intended to be included within the scope of the present invention as defined by the present disclosure. In the present disclosure, the means-plus-function clauses are intended to cover the structures that perform the recited functions herein, and cover not only structural equivalents but also equivalent structures. Accordingly, it will be understood that the foregoing is an illustration of the present invention and is not to be construed as limited to the specific exemplary embodiments disclosed, and that modifications to the disclosed exemplary embodiments as well as other exemplary embodiments are intended to be included within the scope of the present disclosure.

Claims

1. An organic light emitting display device, wherein, the organic light emitting display device includes: active patterns, which are arranged corresponding to a plurality of pixels and are connected to each other along a first direction; a first initialization voltage line to which a first initialization voltage is applied; a second initialization voltage line to which a second initialization voltage different from the first initialization voltage is applied; an organic light emitting diode; and a first transistor that applies the second initialization voltage to a first electrode of the organic light emitting diode, wherein the plurality of pixels are arranged in a matrix form in the first direction and a second direction intersecting the first direction, the active patterns of the plurality of pixels in the first direction are connected to each other, and the active patterns of the plurality of pixels in the second direction include disconnected portions.

2. The organic light emitting display device according to claim 1, wherein, the first transistor includes a first_first transistor and a first_second transistor, a first electrode of the first_first transistor is electrically connected to a first electrode of the first_second transistor, a second electrode of the first_first transistor is electrically connected to a second electrode of the first_second transistor, and a second initialization signal is applied to a gate electrode of the first_first transistor and a gate electrode of the first_second transistor.

3. The organic light emitting display device according to claim 2, wherein, the first_first transistor and the first_second transistor are arranged adjacent to each other.

4. The organic light emitting display device according to claim 3, wherein, the active patterns are physically connected to each other in the pixels of the plurality of pixels, and the active patterns include a channel region of the first_first transistor and a channel region of the first_second transistor.

5. The organic light emitting display device according to claim 2, wherein, the organic light emitting display device further includes: an initialization line that extends in the first direction and to which a first initialization signal or a second initialization signal is applied.

6. The organic light emitting display device according to claim 5, wherein, the first_first transistor and the first_second transistor overlap with the initialization line.

7. The organic light emitting display device according to claim 1, wherein, the organic light emitting display device further includes: a second transistor that is electrically connected to a first power supply and the first electrode of the organic light emitting diode and applies a driving current corresponding to a data signal to the organic light emitting diode; a capacitor that is electrically connected between a gate electrode of the second transistor and the first power supply; and a third transistor that applies the first initialization voltage to the gate electrode of the second transistor and the capacitor in response to a first initialization signal.

8. The organic light emitting display device according to claim 7, wherein, the organic light emitting display device further includes: A data line that extends in a second direction intersecting the first direction and to which the data signal is applied; A fourth transistor electrically connected to the first electrode of the second transistor and the data line; and A fifth transistor electrically connected to the gate electrode of the second transistor and the second electrode of the second transistor.

9. The organic light-emitting display device according to claim 1, wherein the first transistor includes a first_first transistor and a first_second transistor, the source electrode of the first_first transistor is electrically connected to the source electrode of the first_second transistor, the drain electrode of the first_first transistor is electrically connected to the drain electrode of the first_second transistor, a second initialization signal is applied to the gate electrode of the first_first transistor and the gate electrode of the first_second transistor, and the first_first transistor and the first_second transistor are arranged adjacent to each other in the first direction.

10. An organic light-emitting display device, wherein the organic light-emitting display device includes: a substrate; an active layer including active patterns provided on the substrate and connected to each other corresponding to at least two pixels; a first gate insulating layer provided on the substrate on which the active layer is provided; a first gate layer provided on the first gate insulating layer; a second gate insulating layer provided on the first gate insulating layer on which the first gate layer is provided; a second gate layer provided on the second gate insulating layer; an interlayer insulating layer provided on the second gate insulating layer on which the second gate layer is provided; and a data layer provided on the interlayer insulating layer, wherein the at least two pixels are arranged in a matrix form in a first direction and a second direction intersecting the first direction, the active patterns of the at least two pixels in the first direction are connected to each other, and the active patterns of the at least two pixels in the second direction include portions that are disconnected from each other.

11. The organic light-emitting display device according to claim 10, wherein the first gate layer includes: an initialization line to which a first initialization signal or a second initialization signal is applied; a scan line to which a scan signal is applied; and an emission control line to which an emission control signal is applied.

12. The organic light-emitting display device according to claim 11, wherein the second gate layer includes: a first initialization voltage line to which a first initialization voltage is applied; and a second initialization voltage line to which a second initialization voltage is applied.

13. The organic light-emitting display device according to claim 12, wherein the data layer includes: a data line to which a data signal is applied; and a first power supply line to which a first power supply voltage is applied.

14. The organic light-emitting display device according to claim 13, Among them, the organic light-emitting display device further includes: a first first transistor and a first second transistor, and the first first transistor and the first second transistor apply the second initialization voltage to a first electrode of the organic light-emitting diode in response to the second initialization signal.

15. The organic light-emitting display device according to claim 14, wherein, the organic light-emitting display device further includes: a second transistor, which is electrically connected to a first power source and the first electrode of the organic light-emitting diode, and applies a driving current corresponding to a data signal to the organic light-emitting diode; a capacitor, which is electrically connected between a gate electrode of the second transistor and the first power source; and a third transistor, which applies the first initialization voltage to the gate electrode of the second transistor and the capacitor in response to a first initialization signal.

16. The organic light-emitting display device according to claim 15, wherein, the data layer further includes a connection electrode, and the connection electrode is connected to the second initialization voltage line and the first first transistor and the first second transistor.

17. The organic light-emitting display device according to claim 14, wherein, the first first transistor and the first second transistor overlap with the initialization line.

18. An organic light-emitting display device, wherein, the organic light-emitting display device includes: an organic light-emitting diode; and a first first transistor and a first second transistor, and the first first transistor and the first second transistor apply an organic light-emitting diode initialization voltage to a first electrode of the organic light-emitting diode in response to an organic light-emitting diode initialization signal, and wherein a first electrode and a second electrode of the first first transistor are electrically connected to a first electrode and a second electrode of the first second transistor respectively, and a gate electrode of the first first transistor is electrically connected to a gate electrode of the first second transistor, the organic light-emitting display device further includes an active pattern, which is arranged corresponding to a plurality of pixels and is connected to each other along a first direction, wherein the plurality of pixels are arranged in a matrix form in the first direction and a second direction intersecting the first direction, the active patterns of the plurality of pixels in the first direction are connected to each other, and the active patterns of the plurality of pixels in the second direction include portions that are disconnected from each other.

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