Display device
By setting an organic insulating layer in the display device to cover the end of the inorganic insulation layer, the problem of hydrogen free radicals and ammonia of hydrogen radiological and ammonia of the inorganic insulation layer is solved, and the reliability of the display device is improved.
Patent Information
- Application Number
- CN202420826640.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-04-21
- Filing Date
- 2024-04-19
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-19
AI Technical Summary
In the existing display devices, the inorganic insulating layer may release hydrogen radicals and ammonia during oxidation, resulting in oxidation of the lower conductive layer, affecting the reliability of the display device.
In the display device, an organic insulating layer is disposed on one end of the inorganic insulating layer and covers one end of the inorganic insulating layer to prevent hydrogen radicals and ammonia gas from reaching the connection line and the transmission line.
By providing an organic insulating layer, the oxidation of the connecting lines and transmission lines is prevented, the generation of waste gas is reduced, and the reliability of the display device is improved.
Smart Images
Figure CN222396034U_ABST
Abstract
Description
Technical Field
[0001] Embodiments generally provide a display device and more particularly, relate to a flexible display device. Background Art
[0002] The display device is a device that displays an image to provide visual information to a user. The display device includes a touch sensing layer that senses touch. The touch sensing layer may include a touch electrode and a touch insulating layer.
[0003] The touch insulating layer may include an inorganic insulating layer and an organic insulating layer. In this case, the inorganic insulating layer may also be provided in a pad region provided with a pad (also called a "pad" or "welding pad"). When the inorganic insulating layer is oxidized, hydrogen radicals and ammonia may be released. When the hydrogen radicals and ammonia reach the lower conductive layer, the lower conductive layer may also be oxidized. Utility Model Content
[0004] An object of the present invention is to provide a display device with improved reliability.
[0005] A display device according to an embodiment of the present disclosure includes: a substrate including a display area, a pad area spaced apart from the display area, and a bending area arranged between the display area and the pad area; a transmission line arranged in the pad area; a connecting line arranged on the transmission line, connected to the transmission line, and spanning the bending area; an organic insulating layer arranged on the connecting line and completely covering the connecting line; and an inorganic insulating layer arranged on the organic insulating layer to overlap with one end of the organic insulating layer and including an opening exposing the organic insulating layer.
[0006] In an embodiment, the opening may completely expose the organic insulating layer in the bent region.
[0007] In an embodiment, an organic insulating layer may cover one end of the transmission line and the connection line.
[0008] In an embodiment, an end of the transmission line overlapping the organic insulating layer may be disposed adjacent to the bending region.
[0009] In an embodiment, the inorganic insulating layer may include a first sublayer and a second sublayer disposed on the first sublayer, and each of the first sublayer and the second sublayer may include silicon nitride.
[0010] In an embodiment, the film density of the second sub-layer may be greater than the film density of the first sub-layer.
[0011] In an embodiment, the organic insulating layer may include a first organic insulating layer disposed on the connection line and a second organic insulating layer disposed on the first organic insulating layer and overlapping the first organic insulating layer.
[0012] In an embodiment, the first organic insulating layer and the second organic insulating layer may include the same material.
[0013] In an embodiment, the display device may further include an additional insulating layer disposed on the inorganic insulating layer and including an organic material.
[0014] In an embodiment, a length of the first organic insulating layer may be greater than a length of the second organic insulating layer.
[0015] In an embodiment, each of the inorganic insulating layer and the additional insulating layer may cover one end of the organic insulating layer.
[0016] In an embodiment, the inorganic insulating layer may cover one end of the first organic insulating layer located on the same side as one end of the organic insulating layer and may be spaced apart from the second organic insulating layer, and the additional insulating layer may cover one end of the organic insulating layer.
[0017] In an embodiment, each of the inorganic insulating layer and the additional insulating layer may cover an end of the first organic insulating layer located on the same side as an end of the organic insulating layer and may be spaced apart from the second organic insulating layer.
[0018] In an embodiment, the display device may further include: an active layer disposed on the substrate and overlapping the display area; a gate layer disposed on the active layer and partially overlapping the active layer; a first conductive layer disposed on the gate layer and overlapping the display area; and a second conductive layer disposed on the first conductive layer and overlapping the display area.
[0019] In an embodiment, the first conductive layer may include the same material as the transmission line and be formed simultaneously with the transmission line, and the second conductive layer may include the same material as the connection line and be formed simultaneously with the connection line.
[0020] A display device according to an embodiment of the present disclosure includes: a substrate including a display area, a pad area spaced apart from the display area, and a bending area disposed between the display area and the pad area; a first transmission line disposed in the pad area; a connecting line disposed on the first transmission line and spanning the bending area; a transmission electrode disposed between the first transmission line and the connecting line and connecting the first transmission line and the connecting line; a second transmission line disposed on the same plane as the transmission electrode, connected to the first transmission line, spaced apart from the transmission electrode and the connecting line, and disposed in the pad area; and an inorganic insulating layer disposed on the connecting line in the pad area and having an edge that does not overlap with an edge of the second transmission line in a plan view.
[0021] In an embodiment, an edge of the inorganic insulating layer may overlap the first transmission line.
[0022] In an embodiment, the second transmission line may overlap the inorganic insulating layer, and the inorganic insulating layer may be disposed closer to the bending region than the second transmission line.
[0023] In an embodiment, the display device may further include: an active layer disposed on the substrate and overlapping the display area; a gate layer disposed on the active layer and partially overlapping the active layer; a first conductive layer disposed on the gate layer and overlapping the display area; and a second conductive layer disposed on the first conductive layer and overlapping the display area.
[0024] In an embodiment, the gate layer may include the same material as the first transmission line and be formed simultaneously with the first transmission line, the first conductive layer may include the same material as the transmission electrode and the second transmission line and be formed simultaneously with the transmission electrode and the second transmission line, and the second conductive layer may include the same material as the connection line and be formed simultaneously with the connection line.
[0025] In the display device according to the embodiment, since the inorganic insulating layer covers one end of the organic insulating layer, damage to the connecting wire and the transmission line can be prevented. Specifically, hydrogen radicals and ammonia may be generated when the inorganic insulating layer is formed. In this case, when the distance between one end of the inorganic insulating layer and the connecting wire and the transmission line is short, the hydrogen radicals and ammonia can easily reach the connecting wire and the transmission line. However, in the present disclosure, since an organic insulating layer is additionally provided between one end of the inorganic insulating layer and the connecting wire and the transmission line, the hydrogen radicals and ammonia cannot easily reach the connecting wire and the transmission line. Therefore, oxidation of the connecting wire and the transmission line can be prevented, and the amount of waste gas generated can also be reduced. Therefore, the defects of the display device can be reduced, and the reliability of the display device can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Illustrative, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.
[0027] Figure 1 is a plan view showing a display device according to an embodiment of the present disclosure.
[0028] Figure 2 is along Figure 1 A cross-sectional view taken along line II'.
[0029] Figure 3 yes Figure 1 An enlarged plan view of area A.
[0030] Figure 4 is along Figure 3 A cross-sectional view taken along line II-II'.
[0031] Figure 5 It is shown Figure 4A cross-sectional view of another example of .
[0032] Figure 6 It is shown Figure 4 A cross-sectional view of another example of .
[0033] Figure 7 It is shown Figure 6 A cross-sectional view of another example of .
[0034] Figure 8 It is shown Figure 6 A cross-sectional view of another example of.
[0035] Fig. 9 is a cross-sectional view showing a display device according to another embodiment of the present disclosure. DETAILED DESCRIPTION
[0036] Hereinafter, a display device according to an embodiment of the present disclosure will be explained in detail with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals are used for the same components, and redundant descriptions of the same components will be omitted.
[0037] Figure 1 is a plan view showing a display device according to an embodiment of the present disclosure.
[0038] Reference Figure 1 The display device 10 may include a display area DA and a non-display area NDA. The display area DA may be defined as an area where light is emitted, and the non-display area NDA may be defined as an area where components for transmitting signals to the display area DA are disposed.
[0039] A plurality of pixels may be arranged in the display area DA. A plurality of pixels may emit light based on a signal transmitted through the non-display area NDA. A plurality of pixels may generally be arranged in the display area DA. Thus, an image may be displayed by emitting light in the entire area of the display area DA.
[0040] A plurality of drivers may be disposed in the non-display area NDA. The plurality of drivers may generate and transmit signals (such as gate signals, light emission signals, data signals, power supply voltages, initialization voltages, etc.) for driving a plurality of pixels.
[0041] The non-display area NDA may include a pad area PA and a bending area BA. The pad area PA may be spaced apart from the display area DA in the first direction DR1. The bending area BA may be disposed between the display area DA and the pad area PA.
[0042] In the final product, the bending area BA may be bent, and the pad area PA may be located on the rear surface of the display device 10. That is, the pad area PA may not be visually recognized from the front surface of the display device 10. The integrated circuit IC and the circuit board FPC may be disposed in the pad area PA. The integrated circuit IC and the circuit board FPC may be connected to the pad area PA through a conductive film. The integrated circuit IC and the circuit board FPC may generate and transmit signals transmitted to a plurality of pixels.
[0043] Although in Figure 1 , a chip on plastic ("COP") method or a chip on glass ("COG") method is shown as a method of providing the integrated circuit IC, but the integrated circuit IC may also be provided in a chip on film ("COF") method.
[0044] Figure 2 is along Figure 1 A cross-sectional view taken along line II'.
[0045] Reference Figure 1 and Figure 2 The display device 10 may include a substrate SUB, a display element layer DEL and an encapsulation layer ECL. The display element layer DEL may include a circuit element layer CEL and a light emitting element layer LEL.
[0046] The circuit element layer CEL may be disposed on the substrate SUB and may include a buffer layer BFR, at least one transistor TR, a connection electrode CNP, a first insulating layer IL1, a second insulating layer IL2, a third insulating layer IL3, and a fourth insulating layer IL4. The transistor TR may include an active layer ACT, a gate electrode GE, a source electrode SE, and a drain electrode DE. The light emitting element layer LEL may be disposed on the circuit element layer CEL and may include a fifth insulating layer IL5, a spacer SPC, and a light emitting diode LD. The light emitting diode LD may include a first electrode E1, a light emitting layer EL, and a second electrode E2.
[0047] The buffer layer BFR may be disposed on the substrate SUB. The buffer layer BFR may prevent metal atoms or impurities from diffusing from the substrate SUB into the active layer ACT.
[0048] The active layer ACT may be disposed on the substrate SUB. The active layer ACT may overlap the display area DA. The active layer ACT may include a source region and a drain region doped with impurities and a channel region disposed between the source region and the drain region.
[0049] The first insulating layer IL1 may be disposed on the buffer layer BFR. The first insulating layer IL1 may cover the active layer ACT and may have a substantially flat upper surface without generating steps around the active layer ACT. However, the present disclosure is not limited thereto, and the first insulating layer IL1 may be disposed on the active layer ACT in a pattern form. For example, the first insulating layer IL1 may include an inorganic material.
[0050] The gate layer may be disposed on the first insulating layer IL1. The gate layer may include a gate electrode GE. In an embodiment, the gate layer may partially overlap the active layer ACT. For example, the gate electrode GE may overlap the channel region of the active layer ACT.
[0051] The second insulating layer IL2 may be disposed on the first insulating layer IL1. In addition, the second insulating layer IL2 may cover the gate electrode GE and may have a substantially flat upper surface without generating a step around the gate electrode GE. However, it is not limited thereto.
[0052] The first conductive layer may be disposed on the second insulating layer IL2. The first conductive layer may overlap the display area DA. The first conductive layer may include a source electrode SE and a drain electrode DE. The source electrode SE may contact the source region of the active layer ACT through a first contact hole formed in the first insulating layer IL1 and the second insulating layer IL2. The drain electrode DE may contact the drain region of the active layer ACT through a second contact hole formed in the first insulating layer IL1 and the second insulating layer IL2. The first conductive layer may include a metal such as aluminum, titanium, etc.
[0053] The third insulating layer IL3 may be disposed on the second insulating layer IL2. In addition, the third insulating layer IL3 may cover the source electrode SE and the drain electrode DE and may have a substantially flat upper surface without generating steps around the source electrode SE and the drain electrode DE. For example, the third insulating layer IL3 may include an organic material.
[0054] The second conductive layer may be disposed on the third insulating layer IL3. The second conductive layer may overlap the display area DA. The second conductive layer may include a connection electrode CNP. The connection electrode CNP may contact the source electrode SE or the drain electrode DE through a third contact hole formed in the third insulating layer IL3. The second conductive layer may include a metal such as aluminum, titanium, etc.
[0055] The fourth insulating layer IL4 may be disposed on the third insulating layer IL3. In addition, the fourth insulating layer IL4 may cover the connection electrode CNP and may have a substantially flat upper surface without generating a step around the connection electrode CNP. For example, the fourth insulating layer IL4 may include an organic material.
[0056] The first electrode E1 of the light emitting element layer LEL may be disposed on the fourth insulating layer IL4. The first electrode E1 may have light reflectivity or light transmittance. For example, the first electrode E1 may include metal.
[0057] The first electrode E1 may contact the connection electrode CNP through a fourth contact hole formed in the fourth insulating layer IL4 . Thus, the first electrode E1 may be connected to the transistor TR.
[0058] The fifth insulating layer IL5 may be disposed on the fourth insulating layer IL4, and an opening exposing the upper surface of the first electrode E1 may be defined in the fifth insulating layer IL5. The fifth insulating layer IL5 may include an organic material. For example, the fifth insulating layer IL5 may include polyimide. However, the present disclosure is not limited thereto.
[0059] The spacer SPC may be disposed on the fifth insulating layer IL5. The spacer SPC may maintain a gap between the encapsulation layer ECL and the substrate SUB. The spacer SPC may include the same material as the fifth insulating layer IL5. The spacer SPC may be formed simultaneously with the fifth insulating layer IL5. Therefore, the spacer SPC may include an organic material. For example, the spacer SPC may include polyimide. However, the present disclosure is not limited thereto.
[0060] The light emitting layer EL may be disposed on the first electrode E1. The light emitting layer EL may be disposed in an opening formed in the fifth insulating layer IL5. In an embodiment, the light emitting layer EL may have a multilayer structure including a hole injection layer, a hole transport layer, an organic light emitting layer, an electron transport layer, and an electron injection layer. The organic light emitting layer may include a light emitting material.
[0061] The second electrode E2 may cover the light emitting layer EL and may be disposed on the fifth insulating layer IL5 and the spacer SPC. In an embodiment, the second electrode E2 may have a plate shape that substantially covers all of the upper surface of the light emitting element layer LEL. In addition, the second electrode E2 may have light transmittance or light reflectivity. For example, the second electrode E2 may include a metal.
[0062] The encapsulation layer ECL may prevent moisture and oxygen from penetrating into the light emitting diode LD from the outside. For example, the encapsulation layer ECL may include a first inorganic encapsulation layer IEL1, an organic encapsulation layer OEL, and a second inorganic encapsulation layer IEL2.
[0063] The first inorganic encapsulation layer IEL1 may be disposed on the second electrode E2 with substantially the same thickness along the contour of the second electrode E2. The organic encapsulation layer OEL may be disposed on the first inorganic encapsulation layer IEL1 and may have a substantially flat upper surface without generating steps around the first inorganic encapsulation layer IEL1. The second inorganic encapsulation layer IEL2 may be disposed on the organic encapsulation layer OEL.
[0064] The touch sensing layer TSL may be disposed on the encapsulation layer ECL. The touch sensing layer TSL may include a first touch electrode TE1, a first touch insulating layer YILD, a second touch insulating layer YCNT, a second touch electrode TE2, and a touch planarization layer YPVX.
[0065] The first touch electrode TE1 may be disposed on the first touch insulating layer YILD, and the second touch insulating layer YCNT may be disposed on the first touch insulating layer YILD and the first touch electrode TE1. The second touch electrode TE2 may be disposed on the second touch insulating layer YCNT. The first touch electrode TE1 and the second touch electrode TE2 may be spaced apart from the light emitting diode LD in a plan view.
[0066] Each of the first touch insulating layer YILD and the second touch insulating layer YCNT may include silicon nitride. The film density of the second touch insulating layer YCNT may be greater than the film density of the first touch insulating layer YILD.
[0067] The touch planarization layer YPVX may cover the second touch electrode TE2 and may be disposed on the second touch insulating layer YCNT. The touch planarization layer YPVX may have a substantially flat upper surface. The touch planarization layer YPVX may include an organic material.
[0068] The second touch electrode TE2 may be connected to the first touch electrode TE1 through a contact hole. The touch sensing layer TSL may be used as an input unit of the display device 10.
[0069] Figure 3 yes Figure 1 An enlarged plan view of area A. Figure 4 is along Figure 3 A cross-sectional view taken along line II-II'.
[0070] Reference Figure 3 and Figure 4 , the transmission line TL and the connection line CL connecting the pad area PA and the non-display area NDA may be disposed in the non-display area NDA, the pad area PA, and the bending area BA.
[0071] The transmission line TL may be disposed in the pad area PA or the non-display area NDA. That is, the transmission line TL overlapping the pad area PA may be connected to the transmission line TL overlapping the non-display area NDA through the connection line CL crossing the bending area BA.
[0072] In addition, the substrate SUB, the buffer layer BFR, and the first, second, third, and fourth insulating layers IL1, IL2, IL3, and IL4 may extend from the non-display area NDA to the pad area PA.
[0073] Hereinafter, the transmission line TL overlapping the pad area PA will be mainly described. However, the following description may also be applied to the transmission line TL overlapping the non-display area NDA. For example, the transmission line TL overlapping the non-display area NDA may have the same configuration as the transmission line TL overlapping the pad area PA described below.
[0074] The transmission line TL may be disposed on the second insulating layer IL2 and may overlap the pad area PA. Figure 2 The source electrode SE and the drain electrode DE shown in FIG. 1 are disposed in the same layer. The transmission line TL may extend from the pad area PA in a direction opposite to the first direction DR1. That is, the transmission line TL may extend in a direction from the pad area PA toward the bending area BA. The third insulating layer IL3 may cover the transmission line TL. However, the embodiments of the present disclosure are not limited thereto. For example, the transmission line TL may extend in a direction opposite to the first direction DR1. Figure 2 The gate electrode GE shown in FIG. 1 is provided in the same layer.
[0075] The connection line CL may be disposed on the transmission line TL. Specifically, the connection line CL may be disposed on the third insulating layer IL3. In addition, the connection line CL may be disposed in the bending area BA to cross the bending area BA. The connection line CL may be connected to the transmission line TL in the pad area PA. The fourth insulating layer IL4 may cover the connection line CL.
[0076] The transmission line TL may include the same material as the first conductive layer constituting the source electrode SE and the drain electrode DE. That is, the transmission line TL may be formed simultaneously with the first conductive layer. For example, the transmission line TL may include a metal such as aluminum, titanium, etc. However, the embodiments of the present disclosure are not limited thereto. For example, the transmission line TL may include the same material as the gate layer. That is, the transmission line TL may be formed simultaneously with the gate layer.
[0077] The connection line CL may include the same material as the second conductive layer constituting the connection electrode CNP. That is, the connection line CL may be formed simultaneously with the second conductive layer. For example, the connection line CL may include a metal such as aluminum, titanium, or the like.
[0078] The organic insulating layer OIL may be disposed on the connection line CL. Specifically, the organic insulating layer OIL may be disposed on the fourth insulating layer IL4. The organic insulating layer OIL may completely cover the connection line CL. In addition, the organic insulating layer OIL may cover one end of the transmission line TL and the connection line CL. One end of the transmission line TL overlapping the organic insulating layer OIL may be disposed adjacent to the bending area BA.
[0079] The organic insulating layer OIL may include a first organic insulating layer OIL1 and a second organic insulating layer OIL2. The first organic insulating layer OIL1 may be disposed on the fourth insulating layer IL4. The second organic insulating layer OIL2 may be disposed on the first organic insulating layer OIL1 and may completely overlap the first organic insulating layer OIL1.
[0080] The first organic insulating layer OIL1 may be disposed in the display area DA (see Figure 1 ) in the fifth insulating layer IL5 (see Figure 2 ) include the same material. That is, the first organic insulating layer OIL1 may be formed simultaneously with the fifth insulating layer IL5. The second organic insulating layer OIL2 may be formed with the spacer SPC (see FIG. 1 ) disposed in the display area DA. Figure 2 ) include the same material. That is, the second organic insulating layer OIL2 may be formed simultaneously with the spacer SPC.
[0081] In an embodiment, the first organic insulating layer OIL1 and the second organic insulating layer OIL2 may include the same material. That is, the first organic insulating layer OIL1 and the second organic insulating layer OIL2 may be formed at the same time.
[0082] In an embodiment, the inorganic insulating layer IIL may be disposed on the organic insulating layer OIL. The inorganic insulating layer IIL may include an opening OP exposing the organic insulating layer OIL. The opening OP may completely expose the organic insulating layer OIL disposed in the bending area BA. In addition, the opening OP may extend in a second direction DR2 crossing the first direction DR1.
[0083] In an embodiment, the width of the opening OP in the first direction DR1 may be smaller than the width of the organic insulating layer OIL in the first direction DR1. Therefore, the inorganic insulating layer IIL may overlap and cover one end of the organic insulating layer OIL.
[0084] The inorganic insulating layer IIL may include a first sublayer IIL1 and a second sublayer IIL2. The second sublayer IIL2 may be disposed on the first sublayer IIL1. The first sublayer IIL1 and the second sublayer IIL2 may include the same material as each other. For example, each of the first sublayer IIL1 and the second sublayer IIL2 may include silicon nitride. However, the present disclosure is not limited thereto.
[0085] The first sub-layer IIL1 may be aligned with the first touch insulating layer YILD (see FIG. Figure 2 ) include the same material. That is, the first sublayer IIL1 may be formed simultaneously with the first touch insulating layer YILD. The second sublayer IIL2 may be formed simultaneously with the second touch insulating layer YCNT (see Figure 2) include the same material. That is, the second sub-layer IIL2 may be formed simultaneously with the second touch insulating layer YCNT. The film density of the second sub-layer IIL2 may be greater than the film density of the first sub-layer IIL1.
[0086] In an embodiment, the first sub-layer IIL1 may be patterned simultaneously with the second sub-layer IIL2. That is, the first sub-layer IIL1 and the second sub-layer IIL2 may be patterned simultaneously using the same etching mask.
[0087] The additional insulating layer AIL may be disposed on the inorganic insulating layer IIL. The additional insulating layer AIL may completely overlap the inorganic insulating layer IIL. The additional insulating layer AIL may include an organic material. However, the present disclosure is not limited thereto.
[0088] The additional insulating layer AIL may be formed by contacting the touch planarization layer YPVX (see FIG. Figure 2 That is, the additional insulating layer AIL may be formed simultaneously with the touch planarization layer YPVX.
[0089] In an embodiment, a length of the first organic insulating layer OIL1 in the first direction DR1 may be greater than a length of the second organic insulating layer OIL2 in the first direction DR1. That is, the second organic insulating layer OIL2 may expose one end of the first organic insulating layer OIL1.
[0090] In an embodiment, each of the inorganic insulating layer IIL and the additional insulating layer AIL may cover one end of the organic insulating layer OIL. That is, a portion of each of the inorganic insulating layer IIL and the additional insulating layer AIL overlapping the organic insulating layer OIL may be disposed on the upper surface of the second organic insulating layer OIL2.
[0091] In an embodiment, since the inorganic insulating layer IIL covers one end of the organic insulating layer OIL, damage to the connecting line CL and the transmission line TL can be prevented. Specifically, when the inorganic insulating layer IIL is formed, hydrogen radicals and ammonia may be generated. In this case, when the distance between one end of the inorganic insulating layer IIL and the connecting line CL and the transmission line TL is short, the hydrogen radicals and ammonia can easily reach the connecting line CL and the transmission line TL. However, in the present disclosure, since an organic insulating layer OIL is additionally provided between one end of the inorganic insulating layer IIL and the connecting line CL and the transmission line TL, the hydrogen radicals and ammonia cannot easily reach the connecting line CL and the transmission line TL. Therefore, oxidation of the connecting line CL and the transmission line TL can be prevented, and the amount of waste gas generated can also be reduced. As a result, defects of the display device 10 can be reduced, and the reliability of the display device 10 can be improved.
[0092] Figure 5 It is shown Figure 4 A cross-sectional view of another example of.
[0093] For example, except for the shape of the additional insulating layer AIL, refer to Figure 5 The display device 11 described can be used with reference to Figure 4 The display device 10 described is the same. Therefore, redundant descriptions may be omitted or simplified.
[0094] Reference Figure 3 and Figure 5 , the inorganic insulating layer IIL may be disposed on the organic insulating layer OIL. The inorganic insulating layer IIL may include an opening OP exposing the organic insulating layer OIL. The opening OP may completely expose the organic insulating layer OIL disposed in the bending area BA. In addition, the opening OP may extend in a second direction DR2 crossing the first direction DR1.
[0095] In an embodiment, the inorganic insulating layer IIL may overlap one end of the organic insulating layer OIL and cover one end of the organic insulating layer OIL.
[0096] The additional insulating layer AIL may be disposed on the inorganic insulating layer IIL. The additional insulating layer AIL may partially overlap the inorganic insulating layer IIL. In detail, the additional insulating layer AIL may expose an end portion of the inorganic insulating layer IIL overlapping the second organic insulating layer OIL2. The additional insulating layer AIL may include an organic material.
[0097] In an embodiment, the inorganic insulating layer IIL may cover one end of the organic insulating layer OIL. That is, a portion of the inorganic insulating layer IIL overlapping the organic insulating layer OIL may be disposed on an upper surface of the second organic insulating layer OIL2.
[0098] The additional insulating layer AIL may partially overlap the organic insulating layer OIL. That is, the additional insulating layer AIL may partially overlap the first organic insulating layer OIL1 and partially overlap the second organic insulating layer OIL2.
[0099] Figure 6 It is shown Figure 4 A cross-sectional view of another example of.
[0100] For example, in addition to the shape of the inorganic insulating layer IIL, refer to Figure 6 The display device 12 described can be used with reference to Figure 4 The display device 10 described is the same. Therefore, redundant descriptions may be omitted or simplified.
[0101] Reference Figure 3 and Figure 6, the inorganic insulating layer IIL may be disposed on the organic insulating layer OIL. The inorganic insulating layer IIL may define an opening OP exposing the organic insulating layer OIL. The opening OP may completely expose the organic insulating layer OIL disposed in the bending area BA. In addition, the opening OP may extend in a second direction DR2 crossing the first direction DR1.
[0102] In an embodiment, the inorganic insulating layer IIL may overlap one end of the organic insulating layer OIL and cover one end of the organic insulating layer OIL.
[0103] The additional insulating layer AIL may be disposed on the inorganic insulating layer IIL. The additional insulating layer AIL may completely overlap the inorganic insulating layer IIL. The additional insulating layer AIL may include an organic material.
[0104] In an embodiment, a length of the first organic insulating layer OIL1 in the first direction DR1 may be greater than a length of the second organic insulating layer OIL2 in the first direction DR1. That is, the second organic insulating layer OIL2 may expose one end of the first organic insulating layer OIL1.
[0105] In an embodiment, each of the inorganic insulating layer IIL and the additional insulating layer AIL may cover one end of the organic insulating layer OIL. Specifically, the inorganic insulating layer IIL may cover one end of the first organic insulating layer OIL1. That is, a portion of the inorganic insulating layer IIL overlapping the first organic insulating layer OIL1 may be disposed on an upper surface of the first organic insulating layer OIL1. That is, in a plan view, the inorganic insulating layer IIL may be spaced apart from the second organic insulating layer OIL2. The additional insulating layer AIL may cover one end of the second organic insulating layer OIL2 and the first organic insulating layer OIL1. That is, a portion of the additional insulating layer AIL overlapping the organic insulating layer OIL may be disposed on an upper surface of the second organic insulating layer OIL2.
[0106] Figure 7 It is shown Figure 6 A cross-sectional view of another example of.
[0107] For example, except for the shape of the additional insulating layer AIL, refer to Figure 7 The display device 13 described can be used with reference to Figure 6 The display device 12 described is the same. Therefore, redundant descriptions may be omitted or simplified.
[0108] Reference Figure 3 and Figure 7, the inorganic insulating layer IIL may be disposed on the organic insulating layer OIL. The inorganic insulating layer IIL may include an opening OP exposing the organic insulating layer OIL. The opening OP may completely expose the organic insulating layer OIL disposed in the bending area BA. In addition, the opening OP may extend in a second direction DR2 crossing the first direction DR1.
[0109] In an embodiment, the inorganic insulating layer IIL may overlap one end of the organic insulating layer OIL and cover one end of the organic insulating layer OIL.
[0110] The additional insulating layer AIL may be disposed on the inorganic insulating layer IIL. The additional insulating layer AIL may completely overlap the inorganic insulating layer IIL. The additional insulating layer AIL may include an organic material.
[0111] In an embodiment, a length of the first organic insulating layer OIL1 in the first direction DR1 may be greater than a length of the second organic insulating layer OIL2 in the first direction DR1. That is, the second organic insulating layer OIL2 may expose one end of the first organic insulating layer OIL1.
[0112] In an embodiment, each of the inorganic insulating layer IIL and the additional insulating layer AIL may cover one end of the first organic insulating layer OIL1. That is, a portion of each of the inorganic insulating layer IIL and the additional insulating layer AIL overlapping the first organic insulating layer OIL1 may be disposed on an upper surface of the first organic insulating layer OIL1. That is, in a plan view, the inorganic insulating layer IIL and the additional insulating layer AIL may be spaced apart from the second organic insulating layer OIL2.
[0113] Figure 8 It is shown Figure 6 A cross-sectional view of another example of.
[0114] For example, except for the shape of the additional insulating layer AIL, refer to Figure 8 The display device 14 described can be used with reference to Figure 6 The display device 12 described is the same. Therefore, redundant descriptions may be omitted or simplified.
[0115] Reference Figure 3 and Figure 8 , the inorganic insulating layer IIL may be disposed on the organic insulating layer OIL. The inorganic insulating layer IIL may include an opening OP exposing the organic insulating layer OIL. The opening OP may completely expose the organic insulating layer OIL in the bending area BA. In addition, the opening OP may extend in a second direction DR2 crossing the first direction DR1.
[0116] In an embodiment, the inorganic insulating layer IIL may overlap one end of the organic insulating layer OIL and cover one end of the organic insulating layer OIL.
[0117] The additional insulating layer AIL may be disposed on the inorganic insulating layer IIL. The additional insulating layer AIL may partially overlap the inorganic insulating layer IIL. In detail, the additional insulating layer AIL may expose an end portion of the inorganic insulating layer IIL overlapping the first organic insulating layer OIL1. The additional insulating layer AIL may include an organic material.
[0118] In an embodiment, a length of the first organic insulating layer OIL1 in the first direction DR1 may be greater than a length of the second organic insulating layer OIL2 in the first direction DR1. That is, the second organic insulating layer OIL2 may expose one end of the first organic insulating layer OIL1.
[0119] In an embodiment, the inorganic insulating layer IIL may cover one end of the first organic insulating layer OIL1. That is, a portion of the inorganic insulating layer IIL overlapping the first organic insulating layer OIL1 may be disposed on an upper surface of the first organic insulating layer OIL1. That is, in a plan view, the inorganic insulating layer IIL may be spaced apart from the second organic insulating layer OIL2.
[0120] The additional insulating layer AIL may partially overlap the organic insulating layer OIL. Specifically, in a plan view, the additional insulating layer AIL may partially overlap the first organic insulating layer OIL1 and may be spaced apart from the second organic insulating layer OIL2. That is, the additional insulating layer AIL may not overlap the second organic insulating layer OIL2.
[0121] Fig. 9 is a cross-sectional view showing a display device according to another embodiment of the present disclosure.
[0122] In reference Fig. 9 In the display device 15 described herein, the following parts may be omitted or simplified: Figure 1 , Figure 2 , Figure 3 and Figure 4 The description of the display device 10 described above is repeated.
[0123] Reference Figure 1 , Figure 2 , Figure 3 and Fig. 9 , the substrate SUB may include a display area DA, a pad area PA, and a bending area BA. The pad area PA may be spaced apart from the display area DA in the first direction DR1, and the bending area BA may be disposed between the display area DA and the pad area PA.
[0124] A buffer layer BFR and a first insulating layer IL1 may be sequentially disposed on the substrate SUB.
[0125] The first transmission line TL1 may be disposed on the first insulating layer IL1. The second insulating layer IL2 may cover the first transmission line TL1 and may be disposed on the first insulating layer IL1. The transmission electrode TE and the second transmission line TL2 may be disposed on the second insulating layer IL2. The third insulating layer IL3 may cover the transmission electrode TE and the second transmission line TL2 and may be disposed on the second insulating layer IL2. The connection line CL may be disposed on the third insulating layer IL3. The fourth insulating layer IL4 may cover the connection line CL and may be disposed on the third insulating layer IL3.
[0126] The first transmission line TL1 may include the same material as the gate layer overlapping the display area DA. That is, the first transmission line TL1 may be formed simultaneously with the gate layer. The transmission electrode TE and the second transmission line TL2 may include the same material as the first conductive layer overlapping the display area DA. That is, the transmission electrode TE and the second transmission line TL2 may be formed simultaneously with the first conductive layer. The connection line CL may include the same material as the second conductive layer overlapping the display area DA. That is, the connection line CL may be formed simultaneously with the second conductive layer.
[0127] The first transmission line TL1 may overlap the pad area PA and may extend from the pad area PA in a direction opposite to the first direction DR1. The connection line CL may be disposed on the first transmission line TL1, the transmission electrode TE, and the second transmission line TL2, and may cross the bending area BA.
[0128] The transmission electrode TE may be disposed on the first transmission line TL1 and may be disposed under the connection line CL. That is, the transmission electrode TE may be disposed between the first transmission line TL1 and the connection line CL. The transmission electrode TE may connect the first transmission line TL1 and the connection line CL.
[0129] The second transmission line TL2 may be disposed in the same layer (on the same plane) as the transmission electrode TE. The second transmission line TL2 may overlap the pad area PA. In addition, the second transmission line TL2 may be spaced apart from the transmission electrode TE and the connection line CL. The second transmission line TL2 may be connected to the first transmission line TL1. Therefore, the connection line CL, the transmission electrode TE, the first transmission line TL1, and the second transmission line TL2 may be electrically connected.
[0130] The organic insulating layer OIL may be disposed on the connection line CL. Specifically, the organic insulating layer OIL may be disposed on the fourth insulating layer IL4. The organic insulating layer OIL may completely cover the connection line CL. In addition, the organic insulating layer OIL may cover one end of the first transmission line TL1 and the connection line CL. One end of the first transmission line TL1 overlapping the organic insulating layer OIL may be disposed adjacent to the bending area BA.
[0131] The organic insulating layer OIL may include a first organic insulating layer OIL1 and a second organic insulating layer OIL2. The first organic insulating layer OIL1 may be disposed on the fourth insulating layer IL4. The second organic insulating layer OIL2 may be disposed on the first organic insulating layer OIL1 and may completely overlap the first organic insulating layer OIL1.
[0132] In an embodiment, the inorganic insulating layer IIL may be disposed on the fourth insulating layer IL4. The inorganic insulating layer IIL may overlap the pad area PA. In addition, the inorganic insulating layer IIL may include an opening OP exposing the organic insulating layer OIL. The opening OP may completely expose the organic insulating layer OIL disposed in the bending area BA. In addition, the opening OP may extend in a second direction DR2 intersecting the first direction DR1.
[0133] In an embodiment, the width of the opening OP in the first direction DR1 may be greater than the width of the organic insulating layer OIL in the first direction DR1. Therefore, the inorganic insulating layer IIL and the organic insulating layer OIL do not overlap and may be spaced apart from each other in a plan view.
[0134] The inorganic insulating layer IIL may include a first sublayer IIL1 and a second sublayer IIL2. The second sublayer IIL2 may be disposed on the first sublayer IIL1. The first sublayer IIL1 and the second sublayer IIL2 may include the same material as each other. For example, each of the first sublayer IIL1 and the second sublayer IIL2 may include silicon nitride. However, the present disclosure is not limited thereto.
[0135] The additional insulating layer AIL may be disposed on the inorganic insulating layer IIL. The additional insulating layer AIL may completely cover the inorganic insulating layer IIL. The additional insulating layer AIL may include an organic material. However, the present disclosure is not limited thereto.
[0136] In an embodiment, the edge of the second transmission line TL2 may not be exposed by the opening OP of the inorganic insulating layer 11L. That is, the edge of the second transmission line TL2 may be recessed from the opening OP of the inorganic insulating layer 11L.
[0137] In an embodiment, an edge of the inorganic insulating layer IIL may overlap with the first transmission line TL1. That is, one end of the inorganic insulating layer IIL may not overlap with one end of the second transmission line TL2, and may overlap with the first transmission line TL1. The inorganic insulating layer IIL may be disposed closer to the bending area BA than the second transmission line TL2. That is, the inorganic insulating layer IIL may protrude further toward the bending area BA than the second transmission line TL2.
[0138] In the embodiment, since the edge of the inorganic insulating layer IIL and the edge of the second transmission line TL2 are not disposed on a vertical line, damage to the second transmission line TL2 can be prevented. Specifically, when the inorganic insulating layer IIL is formed, hydrogen radicals and ammonia may be generated.
[0139] When the edge of the inorganic insulating layer IIL and the edge of the second transmission line TL2 are arranged on a vertical line, hydrogen radicals and ammonia can easily reach the second transmission line TL2 in a vertical direction. However, in the present disclosure, since the edge of the inorganic insulating layer IIL and the edge of the transmission line TL are not arranged on a vertical line, hydrogen radicals and ammonia cannot easily reach the second transmission line TL2. Therefore, oxidation of the second transmission line TL2 can be prevented, and the amount of exhaust gas can be reduced. Thus, defects of the display device 15 can be reduced, and the reliability of the display device 15 can be improved.
[0140] The present disclosure may be applied to various display devices. For example, the present disclosure may be applied to various display devices such as display devices for vehicles, ships and aircraft, portable communication devices, display devices for display or information transmission, medical display devices, etc.
[0141] The foregoing is illustrative of the embodiments and is not to be construed as limiting thereof. Although some embodiments have been described, it will be readily appreciated by those skilled in the art that many modifications may be made in the embodiments without substantially departing from the novel teachings and advantages of the present invention. Therefore, all such modifications are intended to be included within the scope of the present invention as defined in the claims. Therefore, it will be understood that the foregoing is illustrative of various embodiments and is not to be construed as being limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims.
Claims
1. A display device, characterized in that: The display device has a display area, a pad area spaced apart from the display area, and a bending area disposed between the display area and the pad area, and includes: a transmission line disposed in the pad region; a connecting line, disposed on the transmission line, connected to the transmission line, and spanning the bending region; an organic insulating layer, disposed on the connecting line and completely covering the connecting line; and An inorganic insulating layer is disposed on the organic insulating layer to overlap one end of the organic insulating layer and includes an opening exposing the organic insulating layer.
2. The display device according to claim 1, characterized in that The opening completely exposes the organic insulating layer in the bending region.
3. The display device according to claim 1, characterized in that The organic insulating layer covers one end of the transmission line and the connection line, and The end of the transmission line overlapping the organic insulating layer is disposed adjacent to the bending region.
4. The display device according to claim 1, characterized in that The inorganic insulating layer includes a first sublayer and a second sublayer disposed on the first sublayer, and Wherein, each of the first sublayer and the second sublayer comprises silicon nitride.
5. The display device according to claim 1, characterized in that The organic insulating layer comprises: A first organic insulating layer is disposed on the connecting line; and The second organic insulating layer is disposed on the first organic insulating layer and overlaps the first organic insulating layer.
6. The display device according to claim 5, characterized in that: The display device further includes: an additional insulating layer, disposed on the inorganic insulating layer and comprising an organic material, Wherein, each of the inorganic insulating layer and the additional insulating layer covers the one end of the organic insulating layer.
7. The display device according to claim 5, characterized in that: The display device further includes: an additional insulating layer, disposed on the inorganic insulating layer and comprising an organic material, The inorganic insulating layer covers one end of the first organic insulating layer which is located on the same side as the one end of the organic insulating layer, and is spaced apart from the second organic insulating layer, and Wherein, the additional insulating layer covers the one end of the organic insulating layer.
8. The display device according to claim 5, characterized in that The display device further includes: an additional insulating layer, disposed on the inorganic insulating layer and comprising an organic material, Each of the inorganic insulating layer and the additional insulating layer covers one end of the first organic insulating layer located on the same side as the one end of the organic insulating layer, and is spaced apart from the second organic insulating layer.
9. A display device, characterized in that: The display device has a display area, a pad area spaced apart from the display area, and a bending area disposed between the display area and the pad area, and includes: a first transmission line disposed in the pad region; A connecting line, arranged on the first transmission line and spanning the bending area; a transmission electrode, disposed between the first transmission line and the connection line, and connecting the first transmission line and the connection line; a second transmission line disposed on the same plane as the transmission electrode, connected to the first transmission line, spaced apart from the transmission electrode and the connection line, and disposed in the pad region; and An inorganic insulating layer is disposed on the connection line in the pad region and has an edge that does not overlap an edge of the second transmission line in a plan view.
10. The display device according to claim 9, characterized in that: The edge of the inorganic insulating layer overlaps the first transmission line, and The second transmission line overlaps the inorganic insulating layer, and the inorganic insulating layer is disposed closer to the bending region than the second transmission line.