Display device

Abstract

A display device includes a stretchable substrate, a plurality of pixel formation plates, a first pixel and a second pixel, and a cutout groove. The pixel formation plates are located on the substrate and spaced apart from each other. The first pixel and the second pixel are located on respective first and second pixel formation plates adjacent in a first direction among the plurality of pixel formation plates. The first and second pixel formation plates are connected by a first bridge. The cutout groove is located between the first bridge and the first pixel formation plate and between the first bridge and the second pixel formation plate.

Description

[0001] This application is a divisional application of patent application No. 201610134768.7, filed on March 10, 2016, entitled "Organic Light Emitting Diode Display". Technical Field

[0002] One or more embodiments described herein relate to display devices. Background Technology

[0003] Various flat panel displays have been developed. Examples include liquid crystal displays, plasma display panels, organic light-emitting diode (OLED) displays, field-effect displays, and electrophoretic displays. Each pixel of an OLED display has an organic emission layer located between two electrodes. Electrons injected from one electrode and holes injected from the other electrode combine in the organic emission layer to generate excitons. When the excitons change state, they emit light.

[0004] OLED displays are self-emissive, which allows them to achieve improved performance and efficiency, such as low power consumption, high brightness, and fast response times. Furthermore, because OLED displays do not require an additional light source (such as a backlight), they can also be thinner and lighter than other displays.

[0005] Recently, flexible, foldable, stretchable, or extendable display devices have been developed. In stretchable display devices, light-emitting devices can be formed on a stretchable substrate. When the stretchable substrate is stretched, the light-emitting devices or wires laminated on the upper part of the stretchable substrate may be damaged. Summary of the Invention

[0006] According to one or more embodiments, an organic light-emitting diode display includes: a stretchable substrate; a plurality of pixel forming plates located on the substrate and spaced apart from each other; and a first pixel and a second pixel located on respective first pixel forming plates and second pixel forming plates adjacent to each other in a first direction, the first pixel forming plates and the second pixel forming plates being connected by a first bridge; and a notch located in the first pixel forming plates and the second pixel forming plates and adjacent to the region connected to the first bridge.

[0007] The first bridge can bend in a second direction intersecting the first direction. The first bridge can have a predetermined width. The first bridge can have a predetermined radius of curvature. The first bridge can bend upward along the second direction.

[0008] The first pixel forming plate may include: a first main support plate; a first wing plate located on a transverse surface of the first main support plate, wherein a side end of the first wing plate is connected to a first bridge; a second wing plate located on another transverse surface of the first main support plate and adjacent to the side end of the first wing plate; and a first cutout groove located between a side end of the second wing plate and the first bridge.

[0009] The second pixel forming plate may include: a second main support plate; a third wing plate located on a lateral surface of the second main support plate to face a first wing plate of the first pixel forming plate, one side end of the third wing plate being connected to a first bridge; a fourth wing plate located on another lateral surface of the second main support plate and adjacent to the said one side end of the third wing plate; and a second cutout groove located between one side end of the fourth wing plate and the first bridge.

[0010] The base layer may include: a third pixel forming plate adjacent to the first pixel forming plate in a second direction; a third pixel located on the third pixel forming plate; and a second bridge connecting the first pixel forming plate and the third pixel forming plate.

[0011] The third pixel forming plate may include: a third main support plate; a fifth wing plate located on one lateral surface of the third main support plate facing the second wing plate of the first pixel forming plate, one side end of the fifth wing plate being connected to the second bridge; and a sixth wing plate located on another lateral surface of the third main support plate and adjacent to the said one side end of the fifth wing plate, wherein the second bridge is connected to the other side end of the second wing plate of the first pixel forming plate; and a third notch located between the one side end of the sixth wing plate and the second bridge.

[0012] The display may further include a plurality of first to third conductive lines located on a first pixel forming plate and connected to a first pixel. The first conductive lines may pass through the upper side of the first bridge and connect to a second pixel on a second pixel forming plate. The first conductive lines may extend in the length direction of the first bridge and may be positioned outside the center line of the first bridge that passes through the center of the first bridge.

[0013] The display may include multiple dummy conductors located on the first bridge and positioned above or below the first conductor to overlap a portion of the first conductor, wherein the strain on the dummy conductors is greater than the strain on the first conductor. The dummy conductors may extend along the length of the first bridge and may be positioned inside a centerline passing through the center of the first bridge. The length of the dummy conductors may decrease from the inside to the outside of the first bridge.

[0014] The display may include a sensing thin-film transistor located on a respective pixel forming plate and connected to at least one of the first to third conductive lines to measure strain on at least one of the first to third conductive lines. The first conductive line may include multiple gate lines. The second bridge may be bent in a first direction. The second bridge may have a predetermined width. The second bridge may have a predetermined radius of curvature.

[0015] The second and third conductors can pass through the upper side of the second bridge and connect to the third pixel on the third pixel forming plate. Based on the centerline of the second bridge extending along its length and passing through the center of the second bridge, a portion of the second and third conductors with strain within a first range can be positioned outside the centerline, and another portion of the second and third conductors with strain within a second range can be positioned inside the centerline, the second range being larger than the first range. The second conductor can include multiple data lines, and the third conductor includes multiple drive voltage lines. The first bridge can be bent downwards along a second direction.

[0016] The first pixel forming plate may include: a first main support plate; a first wing plate located on one transverse surface of the first main support plate; and a second wing plate located on another transverse surface of the first main support plate, wherein one side end of the second wing plate is connected to the first bridge, and wherein a first notch is located between a side end of the first wing plate adjacent to the said side end of the second wing plate and the first bridge.

[0017] The second pixel forming plate may include: a second main support plate; a third wing plate formed on a lateral surface of the second main support plate to face a first wing plate of the first pixel forming plate; and a fourth wing plate formed on another lateral surface of the second main support plate, wherein a side end of the fourth wing plate is connected to the first bridge, and wherein a second notch is located between a side end of the third wing plate adjacent to the side end of the fourth wing plate and the first bridge.

[0018] The display may include a plurality of first pixels and a plurality of second pixels. Each of the first and second pixels may include at least one pixel circuit. Each of the first and second pixels may include a plurality of sub-pixels. Each of the pixel forming plates may have a generally polygonal shape.

[0019] According to one or more other embodiments, an organic light-emitting diode display includes: a stretchable substrate; a plurality of pixel forming plates located on the substrate and spaced apart from each other; a first pixel and a second pixel located on respective first pixel forming plates and second pixel forming plates adjacent in a first direction; and first to third wires located on the first pixel forming plates connected to the first pixel, wherein the first pixel forming plates and the second pixel forming plates are connected by a first bridge, and wherein the first wire passes through the upper side of the first bridge and connects to the second pixel of the second pixel forming plate.

[0020] The first bridge may have a predetermined width and may be curved in a second direction intersecting the first direction. The first bridge may have a predetermined radius of curvature. The first conductor may extend along the length of the first bridge and may be positioned outside the centerline of the first bridge that passes through its center.

[0021] The display may include a plurality of dummy wires located on the first bridge and above or below the first conductor to overlap a portion of the first conductor, wherein the dummy wires extend along the length of the first bridge and are positioned inside a centerline passing through the center of the first bridge, and wherein the strain on the dummy wires is greater than the strain on the first conductor.

[0022] The base layer may include: a third pixel forming plate adjacent to the first pixel forming plate in a second direction intersecting the first direction; and a second bridge connecting the first pixel forming plate and the third pixel forming plate, wherein a second conductor and a third conductor pass through the upper side of the second bridge and connect to a third pixel on the third pixel forming plate. The second bridge may have a predetermined width and be curved in the first direction. The second bridge may have a predetermined radius of curvature.

[0023] Based on the centerline extending along the length of the second bridge and passing through the center of the second bridge, a portion of the second conductor and the third conductor may have strain within a first range and may be positioned outside the centerline, and another portion of the second conductor and the third conductor may have strain within a second range and may be positioned inside the centerline, the second range being greater than the first range. Attached Figure Description

[0024] The features will become apparent to those skilled in the art from the detailed description of the exemplary embodiments with reference to the accompanying drawings, in which:

[0025] Figure 1 An embodiment of an OLED display is shown;

[0026] Figure 2 An example of a pixel is shown;

[0027] Figure 3 The base layer according to the first embodiment is shown;

[0028] Figure 4 Show Figure 3 A magnified view of region A in the image;

[0029] Figure 5 Examples of first to third wires connected to pixels are shown;

[0030] Figure 6 An example is shown for extending the base layer;

[0031] Figure 7 Show Figure 6 An example of strain in region B;

[0032] Figure 8 This illustrates an example of strain variation based on location;

[0033] Figure 9 An example of a pixel circuit is shown;

[0034] Figure 10 An example of pixel layout is shown;

[0035] Figure 11 Show along Figure 10 The view of section line XI-XI in the middle;

[0036] Figure 12 Show along Figure 10 The view of section line XII-XII in the middle;

[0037] Figures 13 to 17 An example layout of the conductors in the bridge area is shown;

[0038] Figure 18 An example of the connection structure between a wire and a sensing transistor used to measure strain on the wire is shown;

[0039] Figures 19 to 21 An example layout of sub-pixels is shown;

[0040] Figure 22 A top view of the base layer of the second embodiment is shown;

[0041] Figure 23 A top view of the base layer of the third embodiment is shown;

[0042] Figure 24 Show Figure 23 A magnified view of region C in the image;

[0043] Figure 25 Show connection to Figure 24 Examples of the first to third guide wires of each pixel on the base layer. Detailed Implementation

[0044] Exemplary embodiments will be described more fully below with reference to the accompanying drawings; however, exemplary embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey exemplary implementation methods to those skilled in the art. Embodiments may be combined to form other embodiments.

[0045] It will also be understood that when a layer or element is referred to as being "on" another layer or substrate, it can be directly on that layer or substrate, or there may be intermediate layers. Furthermore, it will be understood that when a layer is referred to as being "below" another layer, it can be directly below, or there may be one or more intermediate layers. Additionally, it will be understood that when a layer is referred to as being "between" two layers, it can be the only layer between those two layers, or there may be one or more intermediate layers. The same reference numerals always refer to the same elements.

[0046] Figure 1 An embodiment of an OLED display is shown. Figure 2 A cross-sectional view showing an embodiment of the pixel (PX) structure is provided. Figure 3 A top view showing an embodiment of the substrate of an OLED display. Figure 4 Show Figure 3 A magnified view of region A in the image, and Figure 5 Show connection to Figure 4 Examples of the first to third conductors of pixels on the base layer.

[0047] exist Figure 1 and Figure 2 In this OLED display, there is a stretchable substrate 100 having an island (IS) shape and a pixel (PX) structure located on the stretchable substrate 100. The pixel (PX) structure represents the rest of the OLED display configuration other than the substrate 100.

[0048] refer to Figure 1 The substrate 100 has a structure for supporting pixels. As a stretchable substrate, the substrate 100 can be extended or compressed in at least one direction. The substrate 100 has an island shape, wherein, for example, multiple islands (IS) are spaced apart from each other by a predetermined distance P. When the substrate 100 is stretched, the distance P between the islands IS increases or decreases. However, even when the substrate 100 is stretched, each of the islands (IS) is not changed; for example, the width and / or height of each of the islands IS does not increase or decrease.

[0049] Furthermore, even if the substrate 100 is stretched, the pixel PX structure on the island IS remains unchanged. However, the bridge BR that connects the pixel PX structures to each other, and the region CN in which the bridge and pixel PX are connected, can be changed.

[0050] refer to Figure 2 The pixel PX on the substrate 100 includes a base layer 110, a thin-film transistor (TFT), a first electrode, an emitter layer, and a second electrode, etc. The base layer 110 is located on the substrate 100. For example, the base layer 110 is located on each of the islands on the substrate 100. In this case, the base layer 110 is formed so that it can be stretched together with the substrate 100 when the substrate 100 is stretched.

[0051] refer to Figure 3 The substrate 110 includes a plurality of pixel forming plates 1110 and bridges 1130. The pixel forming plates 1110 are respectively disposed on islands 11 of the substrate 100. The pixel forming plates 1110 can be arranged in a grid pattern. Each of the pixels PX can be formed on each of the pixel forming plates 1110. The bridges 1130 connect the pixel forming plates 1110 to each other. In another embodiment, a plurality of pixels can be formed on each of the pixel forming plates 1110.

[0052] Each pixel may include pixel circuitry for driving an organic light-emitting element. Pixel circuitry may include, for example, thin-film transistors and storage capacitors Cst for driving the pixel.

[0053] Each of the pixel forming plates 1110 may have a shape corresponding to the cross-sectional shape of the islands IS of the substrate 100. In one embodiment, the pixel forming plate 1110 may have a generally quadrilateral shape. In another embodiment, the pixel forming plate 1110 may have different shapes, such as polygonal shapes, such as circular, triangular, or pentagonal shapes corresponding to the cross-sectional shape of the islands IS of the substrate 100.

[0054] refer to Figure 4 , Figure 3 The enlarged view of region A includes a first pixel forming plate 1111 and a second pixel forming plate 1113 arranged in a first direction within pixel forming plate 1110. The first pixel forming plate 1111 and the third pixel forming plate 1115 are arranged in a second direction perpendicular to the first direction. The first pixel forming plate 1111 and the second pixel forming plate 1113 are connected by a first bridge 1131, while the first pixel forming plate 1111 and the third pixel forming plate 1115 are connected by a second bridge 1133.

[0055] The first pixel forming plate 1111 includes a first main support plate 1111a, a first wing plate 1111b, and a second wing plate 1111c. The first main support plate 1111a is located in the central region of the first pixel forming plate 1111. Thin-film transistors and organic light-emitting elements are formed on the first main support plate 1111a. The first main support plate 1111a may have a generally quadrilateral shape.

[0056] A first wing plate 1111b and a second wing plate 1111c are formed on the lateral surface of the first pixel forming plate 1111 and are combined with bridges connecting the pixel forming plates to each other. The second wing plate 1111c is located on the first main support plate 1111a and adjacent to the first wing plate 1111b. Figure 4 In the diagram, the dashed line between the first main support plate 1111a, the first wing plate 1111b, and the second wing plate 1111c is a virtual line that distinguishes the main support plate from the wing plate.

[0057] In addition to the first wing plate 1111b and the second wing plate 1111c, additional wing plates may be formed on the transverse surface of the first main support plate 1111a. For example... Figure 4 As shown, wing plates can be formed on the left and right sides and the top and bottom sides of the first main support plate 1111a. Four wing plates can be formed on the first main support plate 1111a. In this case, the four wing plates are respectively disposed on the respective lateral surfaces of the quadrilateral first main support plate 1111a. The wing plates formed on the pixel forming plate can have a generally quadrilateral shape.

[0058] Additionally, the second pixel forming plate 1113 includes a second main support plate 1113a, a third wing plate 1113b, and a fourth wing plate 1113c. Like the first main support plate 1111a, the second main support plate 1113a is the central region of the second pixel forming plate 1113. Thin-film transistors and organic light-emitting elements are formed on the second main support plate 1113a. The second main support plate 1113a has a generally quadrilateral shape.

[0059] The third wing plate 1113b and the fourth wing plate 1113c are formed on the lateral surface of the second pixel forming plate 1113 and are combined with bridges connecting the pixel forming plates to each other. The third wing plate 1113b is located on the lateral surface of the second main support plate 1113a, facing the first wing plate 1111b of the first pixel forming plate 1111. The fourth wing plate 1113c is located on the second main support plate 1113a and adjacent to the third wing plate 1113b.

[0060] In addition to the third wing 1113b and the fourth wing 1113c, additional wing plates can be formed on the transverse surface of the second main support plate 1113a. For example... Figure 4 As shown, similar to the first main support plate 1111a, wing plates can be formed on the left and right sides and the top and bottom sides of the second main support plate 1113a. Four wing plates can be formed on the second main support plate 1113a. In this case, the four wing plates are disposed on the corresponding lateral surfaces of the quadrilateral second main support plate 1113a. The wing plates formed on the pixel forming plate can have a generally quadrilateral shape.

[0061] The third pixel forming plate 1115 includes a third main support plate 1115a, a fifth wing plate 1115b, and a sixth wing plate 1115c. Similar to the first main support plate 1111a, the third main support plate 1115a is the central region of the third pixel forming plate 1115, and thin-film transistors and organic light-emitting elements are located on the third main support plate 1115a. The third main support plate 1115a may have a generally quadrilateral shape.

[0062] Fifth wing plate 1115b and sixth wing plate 1115c are formed on the lateral surface of the third pixel forming plate 1115 and are combined with bridges connecting the pixel forming plates to each other. Fifth wing plate 1115b is located on the lateral surface of the third main support plate 1115a, facing the second wing plate 1111c of the first pixel forming plate 1111. Sixth wing plate 1115c is located on the third main support plate 1115a and adjacent to the fifth wing plate 1115b.

[0063] In addition to the fifth wing plate 1115b and the sixth wing plate 1115c, additional wing plates can be formed on the transverse surface of the third main support plate 1115a. For example... Figure 4 As shown, similar to the first main support plate 1111a, wing plates can be formed on the left and right sides and the top and bottom sides of the third main support plate 1115a. Four wing plates can be formed on the third main support plate 1115a. In this case, the four wing plates are disposed on the corresponding transverse surfaces of the quadrilateral third main support plate 1115a.

[0064] In one embodiment, the first wing plate 1111b of the first pixel forming plate 1111 and the third wing plate 1113b of the second pixel forming plate 1113 are connected by a first bridge 1131. The first bridge 1131 is coupled to the ends of the first wing plate 1111b and the third wing plate 1113b on the same side.

[0065] The first bridge 1131 may have a curved shape, such as a curved shape. The first bridge 1131 may have a predetermined constant width. In one embodiment, the first bridge 1131 may have a predetermined radius of curvature. In this case, the shape of the first bridge 1131 is changed when the base 100 disposed below the first bridge 1131 is stretched.

[0066] refer to Figure 6 When the substrate 100 is stretched, each of the pixel forming plates on the island IS of the substrate 100 moves in one direction, and the shape of the first bridge 1131 connecting the first pixel forming plate 1111 and the second pixel forming plate 1113 is changed. In this case, the radius of curvature of the first bridge 1131 increases, so that the area of ​​the base layer 110 can be enlarged or its length can be extended in one direction.

[0067] Refer again Figure 4The second wing plate 1111c of the first pixel forming plate 1111 and the fifth wing plate 1115b of the third pixel forming plate 1115 are connected by a second bridge 1133. The second bridge 1133 is coupled to the ends of the second wing plate 1111c and the fifth wing plate 1115b on the same side.

[0068] Like the first bridge 1131, the second bridge 1133 can be curved. In this case, the second bridge 1133 can have a predetermined width. In one embodiment, the second bridge 1133 can have a predetermined radius of curvature.

[0069] Similar to the first bridge 1131, the shape of the second bridge 1133 changes when the substrate 100, which is located below the second bridge 1133, is stretched. When the substrate 100 is stretched, the shape of the second bridge 1133 connecting the first pixel forming plate 1111 and the third pixel forming plate 1115 is changed. In this case, the radius of curvature of the second bridge 1133 increases, allowing the area of ​​the base layer 110 to be enlarged or its length to be extended in one direction.

[0070] In one embodiment, a first notch 30a is formed in the first pixel forming plate 1111 to be adjacent to the region connected to the first bridge 1131. For example, the first notch 30a may be formed between the first pixel forming plate 1111 and the first bridge 1131.

[0071] More specifically, a first notch 30a may be formed between one end of the second wing 1111c of the first pixel forming plate 1111 and the first bridge 1131. The first notch 30a can prevent the base layer 110 from cracking due to stress occurring between one end of the second wing 1111c and the first bridge 1131.

[0072] exist Figure 4 If a first notch 30a is not formed between the second wing 1111c and the first bridge 1131 of the first pixel forming plate 1111, and the same material as the second wing 1111c and the first bridge 1131 is used to fill the area of ​​the first notch 30a, then the first bridge 1131 can be modified such that stress may concentrate in that area. Therefore, cracks may appear in that area. Additionally, pixels stacked on the first pixel forming plate 1111 may be damaged.

[0073] Additionally, a second notch 30b is formed in the second pixel forming plate 1113 to be adjacent to the area connected to the first bridge 1131. For example, the second notch 30b may be formed between the second pixel forming plate 1113 and the first bridge 1131.

[0074] More specifically, the second notch 30b may be formed between one end of the fourth wing 1113c of the second pixel forming plate 1113 and the first bridge 1131. Similar to the first notch 30a, the second notch 30b can prevent the base layer 110 from cracking due to stress occurring between one end of the fourth wing 1113c and the first bridge 1131.

[0075] Additionally, similar to the first notch 30a and the second notch 30b, a fourth notch 50b can be formed in the first pixel forming plate 1111 to be adjacent to the area connected to the second bridge 1133. Furthermore, a third notch 50a can be formed in the third pixel forming plate 1115 to be adjacent to the area connected to the second bridge 1133.

[0076] refer to Figure 5 A pixel PX1, PX2, PX3, or PX4 can be formed on each of the pixel forming plates 1110 of the base layer 110. Each pixel PX1, PX2, PX3, or PX4 may include multiple sub-pixels, such as a red sub-pixel (R), a green sub-pixel (G), and a blue sub-pixel (B).

[0077] Figure 9 An embodiment of a pixel or subpixel in an OLED display is shown. Figure 10 An example of pixel layout is shown. Figure 11 It is a section taken along line XI-XI. Figure 10 A sectional view. Figure 12 It is a section taken along line XII-XII. Figure 10 A sectional view.

[0078] Reference Figure 9 This describes an equivalent circuit diagram of a pixel or subpixel located on each of the pixel forming plates 1110. The OLED display includes multiple signal lines 121, 171, and 172, and subpixels connected to the multiple signal lines 121, 171, and 172. In this case, the subpixel can be any one of a red subpixel R, a green subpixel G, and a blue subpixel B. As described above, each pixel PX1, PX2, PX3, or PX4 in the pixel forming plate 1110 can include multiple subpixels.

[0079] The signal lines include gate lines 121 for transmitting scan signals, data lines 171 for transmitting data signals, and drive voltage lines 172 for transmitting drive voltages. Gate lines 121 extend substantially in the row direction and are nearly parallel to each other. Data lines 171 extend substantially in the column direction and are nearly parallel to each other. Drive voltage lines 172 are shown extending substantially in the column direction, but may also extend in either the row or column direction or have a mesh-like shape.

[0080] A single sub-pixel includes: a thin-film transistor comprising a switching transistor T1 and a driving transistor T2, a storage capacitor Cst, and an organic light-emitting element LD. A pixel PX or sub-pixel may include a thin-film transistor and a capacitor for compensating for the current supplied to the organic light-emitting element LD.

[0081] The switching transistor T1 includes a control terminal N1, an input terminal N2, and an output terminal N3. The control terminal N1 is connected to the gate line 121, the input terminal N2 is connected to the data line 171, and the output terminal N3 is connected to the driving transistor T2.

[0082] The switching transistor T1 transmits the data signal from the data line 171 to the driving transistor T2 based on the scan signal transmitted via the gate line 121.

[0083] The driving transistor T2 includes a control terminal N3, an input terminal N4, and an output terminal N5. The control terminal N3 is connected to the switching transistor T1, the input terminal N4 is connected to the driving voltage line 172, and the output terminal N5 is connected to the organic light-emitting element LD. The driving transistor T2 outputs an output current Id whose magnitude varies according to the voltage applied between the control terminal N3 and the output terminal N5.

[0084] In this configuration, capacitor Cst is connected between the control terminal N3 and the input terminal N4 of the driving transistor T2. Capacitor Cst is charged with the data signal applied to the control terminal N3 of the driving transistor T2, and this data signal is maintained even after the switching transistor T1 is turned off.

[0085] For example, like an organic light-emitting diode (OLED), an organic light-emitting element (LD) has an anode connected to the output terminal N5 of a driving transistor T2 and a cathode connected to a common voltage ELVSS. The emission intensity of the organic light-emitting element LD varies according to the output current Id of the driving transistor T2.

[0086] Organic light-emitting elements (LDs) can include organic materials that represent one or more primary colors, such as red, green, and blue. OLED displays use the color space of these colors to display the desired image.

[0087] Switching transistor T1 and driving transistor T2 are n-channel field-effect transistors (FETs), but at least one of them can be a p-channel FET. Alternatively, in another embodiment, the connection relationships between transistors T1 and T2, capacitor Cst, and organic light-emitting element LD can be different.

[0088] Reference Figures 10 to 12 The pixels or subpixels formed on each of the pixel forming plates 1110 are described more fully. As described above, the base layer 110 is located on the substrate 100 and may include, for example, polyamide, polyimide, or polyacrylate.

[0089] A buffer layer 120 is formed on the base layer 110. The buffer layer 120 may be formed as silicon nitride (SiN). x A single layer of silicon nitride (SiN) or therein x ) and silicon dioxide (SiO) x The layers are stacked. The buffer layer 120 is used to flatten the surface while preventing the penetration of unwanted materials such as impurities or moisture.

[0090] Switching semiconductor layer 135a and driving semiconductor layer 135b are formed on buffer layer 120 and spaced apart from each other. These semiconductor layers 135a and 135b may include, for example, polycrystalline silicon or oxide semiconductors. The oxide semiconductor may include, for example, oxides based on titanium (Ti), hafnium (Hf), zirconium (Zr), aluminum (Al), tantalum (Ta), germanium (Ge), zinc (Zn), gallium (Ga), tin (Sn), or indium (In), as well as their composite oxides (such as zinc oxide (ZnO), indium gallium zinc oxide (InGaZnO4), indium zinc oxide (Zn-In-O), zinc tin oxide (Zn-Sn-O), indium gallium oxide (In-Ga-O), indium tin oxide (In-Sn-O), indium zirconium oxide (In-Zr-O), indium zirconium zinc oxide (In-Zr-Zn-O), indium zirconium tin oxide (In-Zr-Sn-O), indium zirconium gallium oxide (In-Zr-Ga-O), indium aluminum oxide). At least one of the following: (In-Al-O), indium zinc aluminum oxide (In-Zn-Al-O), indium tin aluminum oxide (In-Sn-Al-O), indium aluminum gallium oxide (In-Al-Ga-O), indium tantalum oxide (In-Ta-O), indium tantalum zinc oxide (In-Ta-Zn-O), indium tantalum tin oxide (In-Ta-Sn-O), indium tantalum gallium oxide (In-Ta-Ga-O), indium germanium oxide (In-Ge-O), indium germanium zinc oxide (In-Ge-Zn-O), indium germanium tin oxide (In-Ge-Sn-O), indium germanium gallium oxide (In-Ge-Ga-O), titanium indium zinc oxide (Ti-In-Zn-O), and hafnium indium zinc oxide (Hf-In-Zn-O).

[0091] When semiconductor layers 135a and 135b comprise oxide semiconductor materials, a separate passivation layer can be added to protect the oxide semiconductor from environmental influences such as high temperatures.

[0092] Semiconductor layers 135a and 135b include undoped channel regions. Source and drain regions are located on opposite sides of the doped channel regions. Depending on the type of thin-film transistor, the doped impurities can vary and may include, for example, n-type or p-type impurities.

[0093] The switching semiconductor layer 135a and the driving semiconductor layer 135b are divided into a channel region 1355 and a source region 1356 and a drain region 1357 formed on opposite sides of the channel region 1355, respectively. The channel region 1355 of the switching semiconductor layer 135a and the driving semiconductor layer 135b may include undoped polysilicon, for example, it may be an intrinsic semiconductor.

[0094] The source region 1356 and drain region 1357 of the switching semiconductor layer 135a and the driving semiconductor layer 135b may include polysilicon doped with conductive impurities, for example, it may be an impurity semiconductor.

[0095] The gate insulating layer 140 is located on the switching semiconductor layer 135a and the driving semiconductor layer 135b. The gate insulating layer 140 may be a single layer or multiple layers comprising, for example, at least one of silicon nitride and silicon oxide.

[0096] Gate line 121, drive gate electrode 125b, and first capacitor electrode 128 are located on gate insulating layer 140. Gate line 121 extends in the horizontal direction and transmits scan signals to switching transistor T1. Gate line 121 includes a switching gate electrode 125a protruding toward switching semiconductor layer 135a.

[0097] The drive gate electrode 125b protrudes from the first capacitor electrode 128 toward the drive semiconductor layer 135b. Each of the switch gate electrode 125a and the drive gate electrode 125b overlaps the channel region 1355.

[0098] An interlayer insulating layer 160 is located on the gate line 121, the drive gate electrode 125b, and the first capacitor electrode 128. Like the gate insulating layer 140, the interlayer insulating layer 160 may include, for example, silicon nitride and / or silicon oxide.

[0099] In the interlayer insulating layer 160 and the gate insulating layer 140, source contact hole 61 and drain contact hole 62 are formed to expose source region 1356 and drain region 1357, respectively. Storage contact hole 63 is formed to expose some of the first capacitor electrode 128.

[0100] A data line 171 having a switching source electrode 176a, a driving voltage line 172 having a driving source electrode 176b and a second capacitor electrode 178, a switching drain electrode 177a connected to the first capacitor electrode 128, and a driving drain electrode 177b are formed on the interlayer insulating layer 160.

[0101] Data line 171 transmits data signals and extends across gate line 121. Drive voltage line 172 transmits drive voltage and is spaced apart from data line 171 to extend in the same direction as data line 171.

[0102] A switch source electrode 176a protrudes from data line 171 toward switch semiconductor layer 135a. A drive source electrode 176b protrudes from drive voltage line 172 toward drive semiconductor layer 135b. Each of the switch source electrode 176a and drive source electrode 176b is connected to source region 1356 through source contact hole 61. A switch drain electrode 177a faces switch source electrode 176a, and a drive drain electrode 177b faces drive source electrode 176b.

[0103] Each of the switching drain electrode 177a and the driving drain electrode 177b is connected to the drain region 1357 through a drain contact hole 62. The switching drain electrode 177a extends to be electrically connected to the first capacitor electrode 128 and the driving gate electrode 125b through a contact hole 63 in the interlayer insulating layer 160.

[0104] The second capacitor electrode 178 protrudes from the driving voltage line 172 to overlap the first capacitor electrode 128. Thus, the first capacitor electrode 128 and the second capacitor electrode 178 form a storage capacitor Cst, wherein the interlayer insulating layer 160 serves as a dielectric material.

[0105] A switching semiconductor layer 135a, a switching gate electrode 125a, a switching source electrode 176a, and a switching drain electrode 177a form a switching transistor T1. Simultaneously, a driving semiconductor layer 135b, a driving gate electrode 125b, a driving source electrode 176b, and a driving drain electrode 177b form a driving transistor T2. Switching transistor T1 and driving transistor T2 correspond to switching elements.

[0106] A passivation layer 180 is formed on the switch source electrode 176a, the drive source electrode 176b, the switch drain electrode 177a, and the drive drain electrode 177b.

[0107] Pixel electrode 710 is formed on passivation layer 180. Pixel electrode 710 may include, for example, transparent conductive materials such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), etc., or reflective metals such as lithium, calcium, lithium fluoride / calcium, lithium fluoride / aluminum, aluminum, silver, magnesium, gold, etc.

[0108] The pixel electrode 710 is electrically connected to the driving drain electrode 177b of the driving transistor T2 through the contact hole 181 in the passivation layer 180, and becomes the anode of the organic light-emitting element 70.

[0109] A pixel defining layer 350 is formed on the edge portion of the pixel electrode 710 and the passivation layer 180. The pixel defining layer 350 includes an opening exposing the pixel electrode 710. The pixel defining layer 350 comprises a resin based on, for example, polyacrylate or polyimide, or an inorganic material based on silicon dioxide.

[0110] An organic emitter layer 720 is formed in an opening in the pixel defining layer 350. The organic emitter layer 720 may be formed with multiple layers, including a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and / or an electron injection layer (EIL). When all of the above layers are included, the HIL may be disposed on the pixel electrode 710 serving as the anode, and the HTL, emitter layer, ETL, and EIL may be sequentially stacked on the HIL.

[0111] The organic emitting layer 720 may include a red organic emitting layer that emits red light, a green organic emitting layer that emits green light, and / or a blue organic emitting layer that emits blue light. The red, green, and blue organic emitting layers are formed on the red, green, and blue pixels, respectively, to achieve a color image.

[0112] The red, green, and blue organic emission layers can be stacked together for red, green, and blue pixels, and the red, green, and blue color filters can be formed in each pixel to achieve a color image.

[0113] In another embodiment, a white organic emitting layer emitting white light is formed on all the red, green, and blue pixels. Red, green, and blue color filters can be formed separately for these pixels to achieve a color image. When using a white organic emitting layer and color filters to achieve a color image, it is not necessary to use deposition masks to deposit the red, green, and blue organic emitting layers on individual pixels, i.e., the red, green, and blue pixels.

[0114] In another embodiment, the white organic emitting layer may be formed having a single organic emitting layer, and may further include a configuration in which multiple organic emitting layers are stacked to emit white light. For example, it may further include a configuration in which at least one yellow organic emitting layer and at least one blue organic emitting layer are combined to emit white light, a configuration in which at least one cyan organic emitting layer and at least one red organic emitting layer are combined to emit white light, or a configuration in which at least one magenta organic emitting layer and at least one green organic emitting layer are combined to emit white light.

[0115] A common electrode 730 is formed on the pixel defining layer 350 and the organic emitting layer 720. The common electrode 730 may include a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium oxide (In2O3), or a reflective metal such as lithium, calcium, lithium fluoride / calcium, lithium fluoride / aluminum, aluminum, silver, magnesium, gold, etc. The common electrode 730 may serve as the cathode of the organic light-emitting element 70. The pixel electrode 710, the organic emitting layer 720, and the common electrode 730 form the organic light-emitting element 70. An outer coating may be formed on the common electrode 730 to protect the organic light-emitting element 70.

[0116] In one embodiment, the first to third wires 121, 171, and 172 are connected to pixels PX1, PX2, PX3, and PX4 on the pixel forming plate 1110 and may be formed on the bridge 1130. For example, multiple wires connected to pixels PX1, PX2, PX3, and PX4 may extend to the pixel forming plate via the bridge.

[0117] Refer again Figure 5 The first wire 121 extends in a first direction through pixel PX1 on the first pixel forming plate 1111. The first wire 121 is formed on the first bridge 1131 and can be connected to pixel PX2 on the second pixel forming plate 1113. For example, the first wire 121 extends in a first direction through the first pixel forming plate 1111, the first bridge 1131 and the second pixel forming plate 1113.

[0118] In one embodiment, the first wire 121 may correspond to the aforementioned gate line 121 for transmitting scan signals. Figure 10 In this configuration, gate line 121 extends substantially in the row direction and may correspond to first wire 121. For example, gate line 121 may be connected to pixels via bridges for connecting pixel forming plates.

[0119] The second wire 171 and the third wire 172 extend in a second direction through pixel PX1 on the first pixel forming plate 1111 and can be formed on the second bridge 1133. The second wire 171 and the third wire 172 can be connected to pixel PX3 on the third pixel forming plate 1115. For example, the second wire 171 and the third wire 172 extend through the first pixel forming plate 1111, the second bridge 1133 and the third pixel forming plate 1115.

[0120] In one embodiment, the second conductor 171 and the third conductor 172 may correspond respectively to the aforementioned data line 171 for transmitting data signals and the aforementioned drive voltage line 172 for transmitting drive voltage. Figure 10In this configuration, data line 171 and drive voltage line 172 extend substantially in the column direction and may correspond to the second conductor 171 and the third conductor 172, respectively. For example, data line 171 and drive voltage line 172 may be connected to pixels via bridges for connecting pixel forming plates.

[0121] Figure 7 Show Figure 6 An example of strain in region B, and Figure 8 This is a diagram illustrating an example of how strain varies with the location of the bridge. More specifically, Figure 7 Example results are provided for measuring strain in the region of the first bridge 1131 when the first pixel forming plate 1111 and the second pixel forming plate 1113 move in opposite lateral directions. Figure 8 The results of measuring the strain on the first bridge 1131 along the d-axis in the direction of the outer circumference based on the reference point S are explained.

[0122] refer to Figure 7 When the first pixel forming plate 1111 and the second pixel forming plate 1113 move in opposite directions, the strain appearing in the first bridge 1131 varies depending on the position. Strain is a measure of the rate of change of length (%) per unit length. For example, Figure 7 Regions a, b, c, and d are regions where the strain is equal, and the strain decreases from region a toward regions b, c, and d.

[0123] The closer to the reference point S, the greater the strain on the first bridge 1131. That is, based on a predetermined radius of curvature, the closer to the center of the first bridge 1131, the greater the strain. For example, based on a centerline passing through the center of the width of the first bridge 1131, the strain inside the centerline is greater than the strain outside the centerline.

[0124] refer to Figure 8 ,based on Figure 7 The strain decreases rapidly as the reference point S along the d-axis gets closer to the outer edge.

[0125] based on Figure 7 and Figure 8 According to the measurement results, when the first pixel forming plate 1111 and the second pixel forming plate 1113 move in the opposite lateral direction, a greater change occurs on the inner side compared to the outer side of the first bridge 1131. Therefore, the first guide wire 121 formed on the bridge 1130 can be set on the outer side of the bridge 1130 based on the center line.

[0126] refer to Figure 13The first conductor 121 may be positioned outside the centerline CL, which passes through the center of the width of the first bridge 1131. As described above, since the first conductor 121 is positioned on the outer side where the strain is relatively small, it can prevent the first conductor 121 from breaking or cracking due to repeated movement of the first pixel forming plate 1111 and the second pixel forming plate 1113.

[0127] In one embodiment, the first conductor 121 can be uniformly arranged in the bridge 1130. However, the dummy conductor 800 can be located inside the centerline CL. In this case, the strain on the dummy conductor 800 can be greater than the strain on the first conductor 121.

[0128] refer to Figure 14 and Figure 15 The dummy conductor 800 can be located above or below the first conductor 121, which is inside the center line CL. For example, as... Figure 14 As shown, the first conductor 121 can be uniformly stacked, while the dummy conductor 800 can be additionally stacked on the first conductor 121 inside the centerline CL. Furthermore, as... Figure 15 As shown, the dummy conductor 800 is stacked inside the center line CL, while the first conductor 121 can be uniformly stacked on top of the dummy conductor 800.

[0129] In one embodiment, the first conductor 121 can be uniformly positioned above the bridge 1130. However, as... Figure 16 As shown, a dummy conductor 800 can be additionally disposed in the central region of bridge 1130. The length of the dummy conductor 800 decreases from the inside of bridge 1130 toward the outside. Furthermore, the strain on the dummy conductor 800 is greater than the strain on the first conductor 121. The inside of bridge 1130 is the region in which the center of the radius of curvature of the curved bridge 1130 is located, while the outside of bridge 1130 is the remaining region excluding the central region.

[0130] In one embodiment, of the second conductor 171 and the third conductor 172 on the bridge 1130, the conductor with relatively small strain is located outside the center line CL. Furthermore, of the second conductor 171 and the third conductor 172, the conductor with relatively large strain is located inside the center line CL. Therefore, since the conductor with relatively large strain is located inside the center line CL and the conductor with relatively small strain is located outside the center line CL, it is possible to prevent the second conductor 171 and the third conductor 172 from breaking or cracking due to repeated movement of the first pixel forming plate 1111 and the second pixel forming plate 1113.

[0131] For example, refer to Figure 17The second conductor 171 can be disposed inside the center line CL, while the third conductor 172 can be disposed outside the center line CL. In one embodiment, the second conductor 171 and the third conductor 172 correspond to the data line 171 and the drive voltage line 172, respectively. The second conductor 171 may comprise a metal having a strain greater than that of the third conductor 172.

[0132] In one embodiment, a sensing thin-film transistor 900 for measuring the strain of the first to third conductors 121, 171, and 172 on the bridge 1130 can be disposed on the pixel forming plate 1110. For example, refer to Figure 18 To detect strain on the second wire 171, a sensing thin-film transistor 900 can be connected to the second wire 171 to measure the resistance of the second wire 171. The sensing thin-film transistor 900 can be, for example, a sensing thin-film transistor used to measure the resistance of a metal.

[0133] Figure 19 , Figure 20 and Figure 21 This is an example of a layout view of subpixels located on a pixel forming plate. As described above, each pixel PX on the pixel forming plate 1110 may include multiple subpixels. In this case, red subpixels (R), green subpixels (G), and blue subpixels (B) may be arranged in each pixel PX in various forms. In another embodiment, at least one pixel PX may be formed on each of the pixel forming plates; for example, multiple pixel PXs including red subpixels, green subpixels, and blue subpixels may be formed on each of the pixel forming plates.

[0134] refer to Figure 19 The green subpixel (G) is located at the center of the pixel forming plate 1110 and extends in the second direction. The blue subpixel B and the red subpixel R can be set on the opposite side of the green subpixel (G).

[0135] refer to Figure 20 A pair of green sub-pixels G can be spaced apart from each other at a predetermined angle relative to a first direction. Blue sub-pixels B and red sub-pixels R can be symmetrical to this pair of green sub-pixels G based on a second direction.

[0136] refer to Figure 21 The first blue sub-pixel B1 and the red sub-pixel R can be spaced apart from each other in a first direction. The green sub-pixel G and the second blue sub-pixel B2 can be spaced apart from each other in a second direction. In one embodiment, the first blue sub-pixel B1 and the second blue sub-pixel B2 can emit light with different wavelengths.

[0137] Figure 22 This is a top view of the substrate of another embodiment of an OLED display. (Reference) Figure 22This OLED display differs from the OLED display of the aforementioned embodiments in terms of its substrate structure.

[0138] like Figure 4 As shown, in the OLED display of the aforementioned embodiment, the first bridge 1131 is bent upward along the second direction. Furthermore, the first bridge 1131, which connects the first pixel forming plate 1111 and the second pixel forming plate 1113, is connected to the first wing plate 1111b and the third wing plate 1113b.

[0139] However, as Figure 22 As shown, in this embodiment, the first bridge 1131'' bends downward along the second direction. Here, the upward and downward bending in the second direction is applicable to... Figure 4 and Figure 22 The conceptual location is used to distinguish the curved shape of the first bridge. In this case, the upward curvature in the second direction represents the direction from the first pixel forming plates 1111 and 1111'' toward the third pixel forming plates 1115 and 1115''. The downward curvature in the second direction represents the direction from the third pixel forming plates 1115 and 1115'' toward the first pixel forming plates 1111 and 1111''.

[0140] The configuration of the first to third pixel forming plates 1111'', 1113'', and 1115'' can be the same as the configuration of the first to third pixel forming plates 1111, 1113, and 1115 in the aforementioned embodiments. Furthermore, as in the aforementioned embodiments, the first bridge 1131'' can have a predetermined width. Additionally, the first bridge 1131'' can be bent to a predetermined radius of curvature.

[0141] refer to Figure 22 The first bridge 1131'' connects to the second wing plate 1111c'' of the first pixel forming plate 1111'' and the fourth wing plate 1113c'' of the second pixel forming plate 1113''. The first bridge 1131'' engages with the facing ends of the second wing plate 1111c'' and the fourth wing plate 1113c''. For example, the second wing plate 1111c'' is located on the upper part of the quadrilateral first main support plate 1111a'', and the fourth wing plate 1113c'' is located on the upper part of the quadrilateral second main support plate 1113a''. The first bridge 1131'', which bends downward along a second direction, engages with each of the facing ends of the second wing plate 1111c'' and the fourth wing plate 1113c''.

[0142] In this embodiment, a first notch 30a'' is formed in the first pixel forming plate 1111'', adjacent to the region connected to the first bridge 1131''. For example, the first notch 30a'' may be located between the first pixel forming plate 1111'' and the first bridge 1131''. For example, the first notch 30a'' may be located between a side end of the first wing plate 1111b'' of the first pixel forming plate 1111'' and the first bridge 1131''. The first notch 30a'' can prevent the base layer 110 from cracking due to stress occurring between a side end of the first wing plate 1111b'' and the first bridge 1131''.

[0143] exist Figure 22 If a first notch 30a'' is not formed between the first wing plate 1111b'' and the first bridge 1131'' of the first pixel forming plate 1111'', and the same material as the first wing plate 1111b'' and the first bridge 1131'' is filled in the area of ​​the first notch 30a'', then the first bridge 1131'' can be modified such that stress may concentrate in that area. Therefore, cracks may appear in that area. Furthermore, pixels stacked on the first pixel forming plate 1111'' may be damaged.

[0144] Additionally, a second notch 30b'' is formed in the second pixel forming plate 1113'' adjacent to the area connected to the first bridge 1131''. For example, the second notch 30b'' may be located between the second pixel forming plate 1113'' and the first bridge 1131''. For example, the second notch 30b'' may be located between one side end of the third wing 1113b'' of the second pixel forming plate 1113'' and the first bridge 1131''. Similar to the first notch 30a'', the second notch 30b'' can prevent the base layer 110 from cracking due to stress occurring between one side end of the fourth wing 1113c'' and the first bridge 1131''.

[0145] Additionally, similar to the first notch 30a'' and the second notch 30b'' described above, a fourth notch 50b'' can be formed in the first pixel forming plate 1111'', adjacent to the region connected to the second bridge 1133''. Furthermore, a third notch 50a'' can be formed in the third pixel forming plate 1115'', adjacent to the region connected to the second bridge 1133''.

[0146] Figure 23 This is a top view of the substrate of another embodiment of an OLED display. Figure 24 Show Figure 23 A magnified view of region C in the image. Figure 25 Show connection to Figure 24 Examples of the first to third guide wires for each pixel on the base layer. Figures 23 to 25 In this embodiment, the OLED display differs from the OLED display of the initial embodiment in terms of the structure of the substrate.

[0147] like Figure 4 As shown, in the OLED display of the aforementioned initial embodiment, notch grooves 30a, 30b, 50a, and 50b are formed in pixel forming plates 1111, 1113, and 1115, adjacent to the regions connected to bridges 1131 and 1133. However, in the OLED display of this embodiment, as... Figure 23 and Figure 24 As shown, no notch is formed in the pixel forming plates 1111', 1113', and 1115' adjacent to the area connected to bridges 1131' and 1133'. In other words, the OLED display of this embodiment differs in whether the notch is formed in the substrate.

[0148] According to the second embodiment described above, the first pixel forming plate 1111' and the second pixel forming plate 1113' are arranged in a first direction. Furthermore, the first pixel forming plate 1111' and the third pixel forming plate 1115' are arranged in a second direction. In this case, the first pixel forming plate 1111' and the second pixel forming plate 1113' are connected by a first bridge 1131', and the first pixel forming plate 1111' and the third pixel forming plate 1115' are connected by a second bridge 1133'.

[0149] For example, the first pixel forming plate 1111' includes a first main support plate 1111a', a first wing plate 1111b', and a second wing plate 1111c'.

[0150] The first main support plate 1111a' may have a generally quadrilateral shape located in the central region of the first pixel forming plate 1111'. Furthermore, a first wing plate 1111b' and a second wing plate 1111c' are formed in the lateral surface of the first pixel forming plate 1111' and are combined with bridges connecting the pixel forming plates to each other. The second wing plate 1111c' is disposed in the first main support plate 1111a' adjacent to the first wing plate 1111b'. Figure 24 In the diagram, the dashed line shown between the first main support plate 1111a' and the first wing plate 1111b' and the second wing plate 1111c' is a virtual line used to distinguish between the main support plate and the wing plate.

[0151] In this case, the first wing plate 1111b' and the second wing plate 1111c', which are disposed in the lateral surface of the first pixel forming plate 1111', can be formed to have a generally triangular shape. For example... Figure 24As shown, since the first wing plate 1111b' and the second wing plate 1111c' are formed with a triangular shape, the cutout groove is not formed between the first bridge 1131' and the second wing plate 1111c'.

[0152] Similar to the aforementioned first pixel forming plate 1111', the wing plates of the second pixel forming plate 1113' and the third pixel forming plate 1115' are also formed to have a triangular shape, and the notch is not formed between the second pixel forming plate 1113' and the third pixel forming plate 1115' and the bridge.

[0153] refer to Figure 25 In this embodiment, the first to third wires 121', 171', and 172' connected to pixels PX1', PX2', PX3', and PX4' formed on the pixel forming plate 1110' can be formed on bridges 1131', 1133', and 1135'. For example, in the same manner as in the first embodiment, multiple wires connected to pixels PX1', PX2', PX3', and PX4' can extend to the pixel forming plate through bridges 1131', 1133', and 1135', respectively.

[0154] For example, a first wire 121' extending in a first direction through a pixel PX1' formed on a first pixel forming plate 1111' is formed on a first bridge 1131'. Furthermore, the first wire 121' may be connected to a pixel PX2' on a second pixel forming plate 1113'. For example, the first wire 121' is formed to extend in a first direction through the first pixel forming plate 1111', the first bridge 1131', and the second pixel forming plate 1113'.

[0155] A second conductor 171' and a third conductor 172' extending in a second direction through pixel PX1' formed on the first pixel forming plate 1111' are formed on the second bridge 1133'. Furthermore, the second conductor 171' and the third conductor 172' can be connected to pixel PX3' of the third pixel forming plate 1115'. For example, the second conductor 171' and the third conductor 172' are formed to extend through the first pixel forming plate 1111', the second bridge 1133', and the third pixel forming plate 1115'.

[0156] In this embodiment, the first to third conductors 121', 171', and 172' passing through the first bridge 1131' or the second bridge 1133' can be connected with... Figures 13 to 17The same configuration is used in the first bridge 1131' or the second bridge 1133' in the embodiments described above. Since the first to third conductors 121', 171' and 172' are configured in the aforementioned structure, the first to third conductors 121', 171' and 172' can be prevented from breaking or cracking due to repeated movement of the first to third pixel forming plates 1111', 1113' and 1115'.

[0157] Example embodiments have been disclosed herein, and although specific terminology has been used, it is used and interpreted in a general and descriptive sense only, and not for limiting purposes. In some cases, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in connection with particular embodiments may be used alone or in combination with features, characteristics, and / or elements described in connection with other embodiments, unless otherwise stated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

Claims

1. A display device, comprising: Stretchable substrate; A plurality of pixels are formed on the substrate and spaced apart from each other; The first pixel and the second pixel are located on corresponding first pixel forming plates and second pixel forming plates that are adjacent in a first direction among the plurality of pixel forming plates. The first pixel forming plates and the second pixel forming plates are connected by a first bridge, wherein the first bridge is located at a nearby corner of the first pixel forming plates and the second pixel forming plates, and wherein the first bridge has a predetermined radius of curvature. as well as The slot is located between the first bridge and the first pixel forming plate and between the first bridge and the second pixel forming plate.

2. The display device according to claim 1, wherein the first bridge is bent in a second direction intersecting the first direction.

3. The display device according to claim 2, wherein the first bridge has a predetermined width.

4. The display device according to claim 2, wherein the first bridge is bent toward a first side of the second direction along the second direction.

5. The display device according to claim 4, wherein the first pixel forming plate comprises: First main support plate; A first wing plate located on one side of the first main support plate, wherein one side end of the first wing plate is connected to the first bridge; and A second wing plate located on the other side of the first main support plate and adjacent to one side end of the first wing plate, and The notch includes a first notch located between one side end of the second wing and the first bridge.

6. The display device according to claim 5, wherein the second pixel forming plate comprises: Second main support plate; A third wing plate located on one side of the second main support plate to face the first pixel forming plate, one side end of the third wing plate being connected to the first bridge; and The fourth wing plate is located on the other side of the second main support plate and adjacent to one side end of the third wing plate, and The notched groove further includes a second notched groove located between one side end of the fourth wing and the first bridge.

7. The display device according to claim 6, further comprising: The third pixel located on the third pixel forming plate, which is adjacent to the first pixel forming plate in the second direction, among the plurality of pixel forming plates; and A second bridge connecting the first pixel forming plate and the third pixel forming plate.

8. The display device according to claim 7, wherein the third pixel forming plate comprises: Third main support plate; A fifth wing plate located on one side of the third main support plate to face the first pixel forming plate, the fifth wing plate having one side end connected to the second bridge; and A sixth wing plate located on the other side of the third main support plate and adjacent to one side end of the fifth wing plate, wherein the second bridge is connected to the other side end of the second wing plate of the first pixel forming plate, and The display device further includes a third notch located between one side end of the sixth wing and the second bridge.

9. The display device according to claim 8, further comprising: Multiple first to third wires are located on the first pixel forming plate and connected to the first pixel, wherein the first wire passes through the outside of the center line of the first bridge based on the center line passing through the center of the first bridge and connects to the second pixel of the second pixel forming plate.

10. The display device of claim 9, wherein the first conductor extends along the length of the first bridge and is disposed on the outer side of the first bridge.

11. The display device according to claim 9, further comprising: Multiple dummy conductors located on the first bridge and positioned above or below the first conductor to overlap a portion of the first conductor, wherein the strain on the dummy conductors is greater than the strain on the first conductor.

12. The display device of claim 11, wherein the dummy conductor extends along the length of the first bridge and is disposed on the inner side of the first bridge based on the centerline.

13. The display device of claim 11, wherein the length of the dummy conductor decreases from the inside of the first bridge toward the outside of the first bridge.

14. The display device according to claim 9, further comprising: A sensing thin-film transistor located on a corresponding pixel forming plate and connected to at least one of the first to third conductors to measure strain on said at least one of the first to third conductors.

15. The display device according to claim 9, wherein the first conductor comprises a plurality of gate lines.

16. The display device of claim 9, wherein the second bridge is bent in the first direction.

17. The display device of claim 16, wherein the second bridge has a predetermined width.

18. The display device of claim 16, wherein the second conductor and the third conductor pass through the outer side of the second bridge based on a center line passing through the center of the second bridge and are connected to the third pixel on the third pixel forming plate.

19. The display device according to claim 18, wherein, Based on the centerline of the second bridge that extends along the length of the second bridge and passes through the center of the second bridge: A portion of the strain of the second and third conductors, within a first range, is disposed on the outer side of the second bridge, and Another portion of the second conductor and the third conductor, having strain within a second range, is disposed inside the second bridge, the second range being larger than the first range.

20. The display device of claim 19, wherein the second conductor comprises a plurality of data lines, and the third conductor comprises a plurality of drive voltage lines.

21. The display device of claim 2, wherein the first bridge is bent toward a second side of the second direction along the second direction.

22. The display device of claim 21, wherein the first pixel forming plate comprises: First main support plate; The first wing plate is located on one side of the first main support plate; and A second wing plate located on the other side of the first main support plate, wherein one side end of the second wing plate is connected to the first bridge, and The notch includes a first notch located between a side end of the first wing adjacent to the side end of the second wing and the first bridge.

23. The display device of claim 22, wherein the second pixel forming plate comprises: Second main support plate; A third wing plate formed on one side of the second main support plate to face the first wing plate of the first pixel forming plate; and A fourth wing plate is formed on the other side of the second main support plate, wherein one side end of the fourth wing plate is connected to the first bridge, and The notch further includes a second notch located between a side end of the third wing adjacent to one side end of the fourth wing and the first bridge.

24. The display device according to claim 1, further comprising: Multiple first pixels, and Multiple second pixels.

25. The display device of claim 24, wherein each of the first pixel and the second pixel includes at least one pixel circuit.

26. The display device of claim 1, wherein each of the first pixel and the second pixel comprises a plurality of sub-pixels.

27. The display device of claim 1, wherein each of the plurality of pixel forming plates has a polygonal shape.

28. A display device, comprising: Stretchable substrate; A plurality of pixels are formed on the substrate and spaced apart from each other; The first pixel and the second pixel located on the corresponding first pixel forming plate and the second pixel forming plate that are adjacent in the first direction among the plurality of pixel forming plates; as well as First to third wires are located on the first pixel forming plate and connected to the first pixel, wherein the first pixel forming plate and the second pixel forming plate are connected by a first bridge, wherein the first bridge is located at a nearby corner of the first pixel forming plate and the second pixel forming plate, wherein the first bridge has a predetermined radius of curvature, and wherein the first wire passes through the outside of the first bridge based on a center line passing through the center of the first bridge and connects to the second pixel of the second pixel forming plate.

29. The display device of claim 28, wherein the first bridge has a predetermined width and is curved in a second direction intersecting the first direction.

30. The display device of claim 29, wherein the first conductor extends along the length of the first bridge and is disposed on the outer side of the first bridge.

31. The display device according to claim 29, further comprising: Multiple dummy conductors located on the first bridge and above or below the first conductor to overlap a portion of the first conductor, wherein the dummy conductors extend in the length direction of the first bridge and are disposed on the inner side of the first bridge based on the centerline, and wherein the strain on the dummy conductors is greater than the strain on the first conductor.

32. The display device according to claim 28, further comprising: The third pixel located on a third pixel forming plate adjacent to the first pixel forming plate in a second direction intersecting the first direction; and A second bridge connects the first pixel forming plate and the third pixel forming plate, wherein the second wire and the third wire pass through the outside of the second bridge based on a center line passing through the center of the second bridge and connect to the third pixel on the third pixel forming plate.

33. The display device of claim 32, wherein the second bridge has a predetermined width and is curved in the first direction.

34. The display device according to claim 32, wherein, Based on the centerline of the second bridge that extends along the length of the second bridge and passes through the center of the second bridge: A portion of the second and third conductors has strain within a first range and is positioned on the outer side of the second bridge. Another portion of the second conductor and the third conductor has a strain within a second range and is disposed inside the second bridge, the second range being larger than the first range.

Images