Display device

Abstract

The present application relates to a display apparatus. The display apparatus includes a display area including gate lines, a plurality of gate drivers disposed in a non-display area adjacent to the display area and connected to the plurality of gate lines, and a driving power transmission line disposed in the non-display area and providing driving power to the gate drivers. The driving power transmission line includes a first driving power transmission line and a second driving power transmission line which overlap each other, wherein an insulating layer is disposed between the first driving power transmission line and the second driving power transmission line, the first driving power transmission line and the second driving power transmission line are connected to each other through a plurality of contact holes formed in the insulating layer, and the plurality of contact holes are disposed in a plurality of areas which overlap the gate drivers in a direction parallel to an extension direction of the gate lines, respectively.

Description

[0001] Cross-references to related applications

[0002] This application claims priority and benefit to Korean Patent Application No. 10-2020-0029003, filed on March 9, 2020, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to display devices, and more specifically, to display devices comprising multiple drive power transmission lines. Background Technology

[0004] Display devices include liquid crystal displays (LCDs), plasma display panels (PDPs), organic light-emitting diode (OLED) devices, inorganic light-emitting diode (LED) devices, quantum dot LED (QLED) devices, field-effect displays (FEDs), electrophoretic display devices, etc.

[0005] Recently, there has been a trend of reducing the bezel size of display devices to increase the screen-to-body ratio (also known as the screen-to-body ratio). The screen-to-body ratio reflects the technical specifications of a display device and is an important factor for consumers when choosing a product.

[0006] As the bezel size of display devices decreases, the non-display area surrounding the display area also decreases. Consequently, the area where signal transmission lines for transmitting signals that drive the display device are located can also decrease, thus narrowing the width of the signal transmission lines. Narrower signal transmission lines can cause a delay in the transmission of the signals they carry.

[0007] The information disclosed above in this background section is provided to enhance the understanding of the background art of this disclosure, and therefore may contain information that does not form prior art known to those skilled in the art. Summary of the Invention

[0008] Exemplary embodiments of this disclosure provide a display device that can prevent signal delay of the drive power transmission line when the display device has a narrow non-display area, and reduce the variation of drive voltage according to the location of the driver.

[0009] A display device according to an embodiment includes: a display area including a plurality of signal lines, the plurality of signal lines including a plurality of gate lines; a plurality of gate drivers disposed in a non-display area adjacent to the display area and connected to the plurality of gate lines; and drive power transmission lines disposed in the non-display area and providing drive power to the plurality of gate drivers. The drive power transmission lines include first drive power transmission lines and second drive power transmission lines that overlap each other, wherein an insulating layer is disposed between the first drive power transmission lines and the second drive power transmission lines. The first drive power transmission lines and the second drive power transmission lines are connected to each other through a plurality of contact holes formed in the insulating layer. The plurality of contact holes are disposed in a plurality of regions that overlap with the plurality of gate drivers in a direction parallel to the extension direction of the plurality of gate lines.

[0010] The first drive power transmission line can be configured to be adjacent to and connected to multiple gate drivers, and the second drive power transmission line can be connected to the first drive power transmission line through multiple contact holes.

[0011] Multiple signal lines may also include multiple data lines. The first drive power transmission line may be disposed on the same layer as the multiple gate lines, and the second drive power transmission line may be disposed on the same layer as the multiple data lines.

[0012] A display device according to another embodiment includes: a display area including a plurality of signal lines, the plurality of signal lines including a plurality of gate lines; a plurality of gate drivers disposed in a non-display area adjacent to the display area and connected to the plurality of gate lines; and drive power transmission lines disposed in the non-display area and providing drive power to the plurality of gate drivers. The drive power transmission lines include a first drive power transmission line and a second drive power transmission line that overlap each other, wherein an insulating layer is disposed between the first drive power transmission line and the second drive power transmission line. The first drive power transmission line includes a first portion and a second portion separated from each other by a cut. The first drive power transmission line includes a pad portion for providing drive power, and the first portion is connected to the pad portion.

[0013] The first length of the first part can be shorter than the second length of the second part.

[0014] A first portion of the first drive power transmission line can be connected to the second drive power transmission line via a first contact hole formed in the insulating layer. The first contact hole can be positioned adjacent to the pad portion, but not overlapping with the multiple gate drivers in a direction parallel to the extension direction of the multiple gate lines.

[0015] A second portion of the first drive power transmission line can be connected to the second drive power transmission line via a plurality of second contact holes formed in the insulating layer. The plurality of second contact holes can be configured to overlap with one or more of the plurality of gate drivers in a direction parallel to the extension direction of the plurality of gate lines.

[0016] A display device according to another embodiment includes: a display area including a plurality of signal lines, the plurality of signal lines including a plurality of gate lines; a plurality of gate drivers disposed in a non-display area adjacent to the display area and connected to the plurality of gate lines; and drive power transmission lines disposed in the non-display area and providing drive power to the plurality of gate drivers. The drive power transmission lines include a first drive power transmission line and a second drive power transmission line that overlap each other, wherein an insulating layer is disposed between the first drive power transmission line and the second drive power transmission line. The first drive power transmission line includes a first portion and a second portion connected to a high-resistance portion. The first drive power transmission line includes a pad portion for providing drive power, and the first portion is connected to the pad portion.

[0017] The first width of the high-resistance section can be narrower than the second width of the first drive power transmission line.

[0018] The first width of the high-resistance section can be about 1 / 10 of the second width of the first drive power transmission line.

[0019] The gate driver can be attached to the side surface of the display device.

[0020] According to the implementation, when the display device has a narrow non-display area, the display device can prevent signal delay of the drive power transmission line and reduce the change of drive voltage according to the position of the driver. Attached Figure Description

[0021] Figure 1 A plan view of a display device according to an embodiment is shown.

[0022] Figure 2 An enlarged view showing a portion of a display device according to an embodiment is shown.

[0023] Figure 3 It shows the section cut along a direction parallel to the second direction. Figure 2 A cross-sectional view of a portion of the non-display area.

[0024] Figure 4 It shows Figure 2 and Figure 3 A perspective view of a portion of the display device shown.

[0025] Figure 5 A cross-sectional view of a display device according to another embodiment is shown.

[0026] Figure 6 A cross-sectional view of a display device according to another embodiment is shown.

[0027] Figure 7 A schematic perspective view of a display device according to an embodiment is shown.

[0028] Figure 8 A schematic perspective view of a display device according to an embodiment is shown.

[0029] Figure 9 A waveform diagram of the drive signal of the display device according to the comparative example is shown.

[0030] Figure 10 It shows that according to Figure 9 The image of the display device is a comparative example.

[0031] Figure 11 A waveform diagram of the drive signal of a display device according to an embodiment is shown. Detailed Implementation

[0032] In the following description, exemplary embodiments will be described more fully with reference to the accompanying drawings. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this disclosure.

[0033] For clarity of description, elements or any part thereof that are not relevant to the description may be omitted, and throughout the specification, the same reference numerals denote the same or similar constituent elements.

[0034] Furthermore, since the dimensions and thicknesses of the components shown in the figures are arbitrarily given for better understanding and ease of description, this disclosure is not limited to the dimensions and thicknesses shown. In the figures, the dimensions and / or thicknesses of some layers, films, panels, regions, etc., may be exaggerated for clarity, better understanding, or ease of description.

[0035] It should be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” another element, it may be directly on the other element, or one or more intervening elements may be present. Conversely, when an element is referred to as being “directly on” another element, no intervening element may be present. Furthermore, in this specification, the terms “on” or “above” mean positioned on or below an object, and do not necessarily mean positioned on the upper side of the object based on the direction of gravity.

[0036] Furthermore, unless explicitly stated otherwise, the word “comprise” and its variations (such as “comprises” or “comprising”) will be understood to imply inclusion of the stated element, but not exclusion of any other element.

[0037] Furthermore, in this specification, the phrase "in a plan view" means viewing the object from above, and the phrase "in a cross section" means viewing a cross section taken by vertically cutting the object from the side.

[0038] Furthermore, in this specification, the term "connection" means that two or more components may not be directly connected, but rather they may be indirectly connected through another component, including not only physical connections but also electrical connections, or it may be referred to by different names depending on location or function, but it can mean "overall connection".

[0039] Reference Figure 1 A display device according to an embodiment is illustrated. Figure 1 A plan view of a display device according to an embodiment is shown.

[0040] Display device 1000 includes multiple signal lines, a display area DA, and a non-display area PA. The signal lines include multiple gate lines G1, ..., and Gn, and multiple data lines D1, ..., and Dm. The display area DA includes multiple pixels PX connected to the signal lines. The non-display area PA surrounds the display area DA. Compared to the display area DA, the non-display area PA can have a relatively small area and can be invisible.

[0041] Gate lines G1, ..., and Gn can extend along a first direction D1 and can be connected to multiple gate drivers GC to receive gate drive signals. Data lines D1, ..., and Dm can extend along a second direction D2 perpendicular to the first direction D1 and can be connected to multiple data drivers DC to receive data signals.

[0042] Gate driver GC can be mounted on multiple gate driver circuit boards GCB, and data driver DC can be mounted on multiple data driver circuit boards DCB. Each of the gate driver GC and data driver DC can be configured in various ways. For example, each of the gate driver GC and data driver DC can be attached to a corresponding one of the gate driver circuit boards GCB and data driver circuit boards DCB in the form of at least one integrated circuit (IC) chip, can be mounted in a tape package (TCP) on a flexible printed circuit film attached to a non-display area PA, or can be mounted on a separate printed circuit board (not shown). In another example, each of the gate driver GC and data driver DC can be directly formed in the non-display area PA and connected to gate lines G1, ..., and Gn and data lines D1, ..., and Dm.

[0043] exist Figure 1In this embodiment, the gate driver GC and the data driver DC are shown positioned on one side of the non-display area PA, but this disclosure is not limited thereto. In some embodiments, the gate driver GC may be positioned on opposite sides along a first direction D1, with multiple gate lines G1, ..., and Gn positioned between the gate driver GC, and the data driver DC may be positioned on opposite sides along a second direction D2, with data lines D1, ..., and Dm positioned between the data driver DC.

[0044] Although not in Figure 1 As shown, however, the display device 1000 may also include a drive power transmission line for transmitting drive power to the gate driver GC. This will be referenced. Figures 2 to 4 To provide a more detailed description. Figure 2 An enlarged view showing a portion of a display device according to an embodiment is shown. Figure 3 It shows the section cut along a direction parallel to the second direction. Figure 2 A cross-sectional view of a portion of the non-display area, and Figure 4 It shows Figure 2 and Figure 3 A perspective view of a portion of the display device 1000 shown.

[0045] In the following figures, eight gate driver GCs are shown for ease of description. However, this disclosure is not limited thereto, and it should be understood that the display device 1000 may include other numbers of gate driver GCs without departing from the scope of this disclosure.

[0046] Reference Figure 2 The diagram shows a portion of the non-display area PA taken along the second direction D2. Gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8 are connected to drive power transmission line 120 to receive drive power for driving the gates of gate drivers GC1 to GC8.

[0047] The drive power transmission line 120 includes a pad portion 12 disposed at its end, through which drive power from the outside can be provided. The drive power can provide gate turn-on signals and gate turn-off signals to the gate drivers GC1 to GC8.

[0048] Reference Figure 3 and Figure 4The display device 1000 includes an insulating substrate 110, a buffer layer 110a, insulating layers 130 and 140, and a driving power transmission line 120. The driving power transmission line 120 includes a first driving power transmission line 120p disposed beneath the insulating layers 130 and 140 and a second driving power transmission line 120q disposed on the insulating layers 130 and 140, with the insulating layers 130 and 140 interposed between the first driving power transmission line 120p and the second driving power transmission line 120q. The insulating layers 130 and 140 have a plurality of contact holes 31, and the first driving power transmission line 120p and the second driving power transmission line 120q are connected to each other through the contact holes 31. The first driving power transmission line 120p of the driving power transmission line 120 can be formed in the same layer as the gate lines G1, ..., and Gn, and the second driving power transmission line 120q of the driving power transmission line 120 can be formed in the same layer as the data lines D1, ..., and Dm. Insulating layers 130 and 140 may correspond to gate insulating layers, interlayer insulating layers, etc. Although in this embodiment two insulating layers 130 and 140 are disposed between the first drive power transmission line 120p and the second drive power transmission line 120q, this disclosure is not limited thereto, and one or more insulating layers may be disposed between the first drive power transmission line 120p and the second drive power transmission line 120q.

[0049] The interlayer structure of the insulating layers will be described in more detail. A buffer layer 110a is disposed on the insulating substrate 110. A first driving power transmission line 120p, connecting the drive power transmission lines 120 to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8, is disposed on the buffer layer 110a. Insulating layers 130 and 140, having contact holes 31, are disposed on the first driving power transmission line 120p. The contact holes 31 of the insulating layers 130 and 140 overlap with the first driving power transmission line 120p. A second driving power transmission line 120q is disposed on the insulating layers 130 and 140 and connected to the first driving power transmission line 120p through the contact holes 31 of the insulating layers 130 and 140. The contact holes 31 can be configured to correspond to each of the regions overlapping the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8 along directions parallel to the directions extending with the gate lines G1, ..., Gn. Figure 3 The step difference formed on the upper surface of the second drive power transmission line 120q due to the step difference between the insulating layers 130 and 140 is shown; however, the present disclosure is not limited thereto, and the upper surface of the second drive power transmission line 120q may be substantially flat without a step difference.

[0050] Drive power can be simultaneously applied to gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 via drive power transmission line 120 through pad portion 12.

[0051] Since the drive power provided through the pad portion 12 is transmitted to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 through the drive power transmission line 120, a voltage drop may occur in the applied drive power due to the resistance of the drive power transmission line 120 and the resistance of the gate drivers GC1 to GC8.

[0052] Specifically, because the width of the non-display area PA in the display device 1000 where the drive power transmission line 120 is disposed is narrowed, the width of the drive power transmission line 120 is also narrowed, and therefore, the resistance of the drive power transmission line 120 can be increased. Consequently, the voltage drop of the drive power transmitted to the gate drivers GC1 to GC8 can be increased. The voltage difference between adjacent gate drivers, depending on the voltage drop of the drive power, can be identified as a line (e.g., a dark line) extending along the space between gate drivers GC1 to GC8 in the direction of gate lines G1, ..., and Gn.

[0053] According to the display device 1000 of an embodiment, the drive power transmission line 120 may include a first drive power transmission line 120p connected to gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8 and receiving drive power through pad portions 12, and a second drive power transmission line 120q overlapping the first drive power transmission line 120p, wherein insulating layers 130 and 140 are located between the first drive power transmission line 120p and the second drive power transmission line 120q. The second drive power transmission line 120q is connected to the first drive power transmission line 120p through contact holes 31 formed in the insulating layers 130 and 140. The contact holes 31 may be configured to correspond to each of the regions overlapping the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8 in a direction parallel to the direction extending with the gate lines G1, ..., Gn. The drive power applied to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 is transmitted not only through the first drive power transmission line 120p but also through the second drive power transmission line 120q.

[0054] In this way, by including a first drive power transmission line 120p that is directly connected to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 and receives drive power through the pad portion 12, and a second drive power transmission line 120q that is connected to the first drive power transmission line 120p, the resistance of the drive power transmission line 120 can be effectively reduced, thereby reducing the voltage drop of the drive power through the drive power transmission line 120. Furthermore, since the drive power is transmitted simultaneously through both the second drive power transmission line 120q and the first drive power transmission line 120p, even when the drive power applied to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 through the first drive power transmission line 120p experiences a voltage drop due to the resistance of each gate driver GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8, the voltage drop can be compensated by the drive power transmitted through the second drive power transmission line 120q, thereby preventing or reducing the voltage drop of the drive power caused by the resistance of the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8.

[0055] As described above, the gate driver GC can be disposed on opposite sides along the first direction D1, and the gate lines G1, ..., and Gn are disposed between the gate drivers GC. The drive power transmission line 120, which includes the first drive power transmission line 120p, the second drive power transmission line 120q, and the pad portion 12, can also be disposed on opposite sides along the first direction D1, and the gate lines G1, ..., and Gn are disposed between the drive power transmission lines 120 to be respectively connected to the gate driver GC disposed on opposite sides.

[0056] In the following text, reference will be made to Figure 5 Describes a display device according to another embodiment. Figure 5 A cross-sectional view of a display device according to another embodiment is shown. A drive power transmission line 120 is provided along a direction parallel to the second direction D2. Figure 1 In the non-display area PA.

[0057] Reference Figure 5 The drive power transmission line 120 according to this embodiment is similar to that according to reference. Figures 2 to 4 The described embodiment includes a drive power transmission line 120.

[0058] The drive power transmission line 120 includes a pad portion 12 disposed at its end, through which drive power received from the outside can be provided. The drive power transmission line 120 includes a first drive power transmission line 120p disposed beneath insulating layers 130 and 140 and a second drive power transmission line 120q disposed on insulating layers 130 and 140, with insulating layers 130 and 140 disposed between the first drive power transmission line 120p and the second drive power transmission line 120q. The first drive power transmission line 120p of the drive power transmission line 120 can be formed in the same layer as the gate lines G1, ..., and Gn, and the second drive power transmission line 120q of the drive power transmission line 120 can be formed in the same layer as the data lines D1, ..., and Dm.

[0059] With reference Figures 2 to 4 Unlike the described drive power transmission line 120, the first drive power transmission line 120p of the drive power transmission line 120 according to this embodiment can be divided into a first portion 120pa and a second portion 120pb separated by a cut 21. The cut 21 of the first drive power transmission line 120p is positioned closer to the pad portion 12 relative to the center of the first drive power transmission line 120p. Therefore, the length of the first portion 120pa of the first drive power transmission line 120p, measured along the second direction D2 extending along the first drive power transmission line 120p, can be shorter than the length of the second portion 120pb of the first drive power transmission line 120p, measured along the second direction D2.

[0060] In this embodiment, the notch 21 of the first drive power transmission line 120p is disposed between the second gate driver GC2 and the third gate driver GC3 among the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8. However, the location of the notch 21 of the first drive power transmission line 120p is not limited to this, and it can be disposed at different portions of the first drive power transmission line 120p that are relatively closer to the pad portion 12 relative to the center of the first drive power transmission line 120p, for example, between the first gate driver GC1 and the second gate driver GC2, or between the third gate driver GC3 and the fourth gate driver GC4.

[0061] The gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 that receive drive power can be driven sequentially from the eighth gate driver GC8, which is furthest from the pad portion 12, to the first gate driver GC1, which is closest to the pad portion 12.

[0062] In this configuration, the eighth gate driver GC8, which is furthest from the pad portion 12, can be driven first. After driving the eighth gate driver GC8, the seventh gate driver GC7 is driven, and drive power is maintained on the seventh gate driver GC7 until the sixth gate driver GC6 is driven. Similarly, after driving the seventh gate driver GC7, the sixth gate driver GC6 is driven, followed by the fifth gate driver GC5, the fourth gate driver GC4, the third gate driver GC3, and the second gate driver GC2 in sequence, and finally the first gate driver GC1, which is closest to the pad portion 12, is driven. Therefore, while driving the eighth gate driver GC8 to the third gate driver GC3, drive power is maintained on the first gate driver GC1 and the second gate driver GC2.

[0063] Furthermore, as described above, since the drive power supplied from the outside to the drive power transmission line 120 through the pad portion 12 is transmitted to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 through the drive power transmission line 120, a voltage drop may occur due to the resistance of the drive power transmission line 120 and the resistance of the gate drivers GC1 to GC8.

[0064] Drive power is continuously transferred to the first gate driver GC1 and the second gate driver GC2 closest to the pad portion 12 until the eighth gate driver GC8, furthest from the pad portion 12, is first driven and then turned off, and the seventh gate driver GC7, the sixth gate driver GC6, the fifth gate driver GC5, the fourth gate driver GC4, and the third gate driver GC3 are sequentially driven and then turned off. When a difference in drive power is applied between the first gate driver GC1 and the second gate driver GC2, this difference is maintained until the eighth gate driver GC8, furthest from the pad portion 12, begins to be driven, and then the gate drivers up to the third gate driver GC3 are driven sequentially. Therefore, the period during which a voltage drop that may occur between the first gate driver GC1 and the second gate driver GC2 near the pad portion 12 is maintained is longer than the period during which a voltage drop that may occur between the seventh gate driver GC7 and the eighth gate driver GC8 far from the pad portion 12 is maintained. In this case, dark lines at the gate lines extending between the first gate driver GC1 and the second gate driver GC2 can be easily identified.

[0065] According to this embodiment, the first drive power transmission line 120p of the drive power transmission line 120 is divided into a first portion 120pa and a second portion 120pb separated by a cut 21. The cut 21 of the first drive power transmission line 120p is configured to be close to the pad portion 12 relative to the center of the first drive power transmission line 120p.

[0066] Furthermore, no contact holes for connecting the first drive power transmission line 120p and the second drive power transmission line 120q are provided at the portion corresponding to the first gate driver GC1 and the second gate driver GC2 connected to the first portion 120pa of the first drive power transmission line 120p in the direction extending along the gate lines G1, ..., and Gn.

[0067] Therefore, due to the cutout 21 of the first drive power transmission line 120p, the voltage drop of the drive power applied to the first gate driver GC1 and the second gate driver GC2 through the pad portion 12 and the first drive power transmission line 120p may only influence or affect the first portion 120pa of the first drive power transmission line 120p, and the voltage drop of the drive power applied to the first gate driver GC1 and the second gate driver GC2 may not affect the second portion 120pb of the first drive power transmission line 120p.

[0068] The second portion 120pb of the first drive power transmission line 120p can be connected to the second drive power transmission line 120q through one or more second contact holes 31b formed in the insulating layers 130 and 140 to receive drive power.

[0069] Reference Figure 5 The first drive power S1 is applied to the first gate driver GC1 through the first drive power transmission line 120p, and the second drive power S2 is also applied to the second gate driver GC2 through the first drive power transmission line 120p.

[0070] As described above, no contact holes for connecting the first drive power transmission line 120p and the second drive power transmission line 120q are provided at the portions corresponding to the first gate driver GC1 and the second gate driver GC2 in the directions extending along the gate lines G1, ..., and Gn. Therefore, drive power is applied to the first gate driver GC1 and the second gate driver GC2 through the first drive power transmission line 120p and not through the second drive power transmission line 120q.

[0071] Therefore, the drive power applied to the second drive power transmission line 120q is unaffected by the voltage drop of the drive power applied to the first gate driver GC1 and the second gate driver GC2.

[0072] The third drive power S3 is applied to the third gate driver GC3 via the second drive power transmission line 120q. The second drive power transmission line 120q is connected to the first drive power transmission line 120p through a first contact hole 31a and a second contact hole 31b. The first contact hole 31a is positioned adjacent to the pad portion 12, and the second contact hole 31b is positioned corresponding to the third gate driver GC3. Similarly, the fourth drive power S4 to the eighth drive power S8 are applied to the fourth gate driver GC4 to the eighth gate driver GC8 via the first drive power transmission line 120p and the second drive power transmission line 120q connected to each other through the second contact hole 31b.

[0073] As described above, according to the display device of this embodiment, the first driving power transmission line 120p is divided into a first portion 120pa and a second portion 120pb separated by a cut 21 in the first driving power transmission line 120p. In the portion adjacent to the pad portion 12, the first portion 120pa of the first driving power transmission line 120p is connected to the second driving power transmission line 120q, and no contact holes for connecting the first driving power transmission line 120p and the second driving power transmission line 120q are provided in the portion corresponding to the first gate driver GC1 and the second gate driver GC2 in the direction extending along the gate lines G1, ..., and Gn.

[0074] Furthermore, the second drive power transmission line 120q is connected to the second portion 120pb of the first drive power transmission line 120p through a plurality of second contact holes 31b. The second contact holes 31b are configured to overlap with the third gate driver GC3, the fourth gate driver GC4, the fifth gate driver GC5, the sixth gate driver GC6, the seventh gate driver GC7, and the eighth gate driver GC8 in a direction parallel to the direction in which the gate lines G1, ..., and Gn extend.

[0075] Therefore, when drive power is applied to gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8, the effect of the voltage drop of the drive power between the first gate driver GC1 and the second gate driver GC2, which maintains the longest period due to proximity to pad portion 12, can be reduced or eliminated. Furthermore, the voltage difference that may occur due to the voltage drop between the first gate driver GC1 and the second gate driver GC2, and which can be maintained while the gate drivers are driven in reverse order from the eighth gate driver GC8 to the third gate driver GC3, can be maintained only during the time period when the first gate driver GC1 and the second gate driver GC2 are driven, thereby preventing dark lines and other issues that might otherwise occur due to the longer duration of the voltage difference.

[0076] Furthermore, drive power can be applied to the third gate driver GC3 to the eighth gate driver GC8 through the second drive power transmission line 120q. The second drive power transmission line 120q is connected to the first drive power transmission line 120p through the second contact hole 31b formed in the insulating layers 130 and 140, thereby preventing voltage drop of the drive power that may be caused by the resistance of the drive power transmission line 120.

[0077] In the following text, reference will be made to Figure 6 Describes a display device according to another embodiment. Figure 6 A cross-sectional view of a display device according to another embodiment is shown. A drive power transmission line 120 is provided along a direction parallel to the second direction D2. Figure 1 In the non-display area PA.

[0078] Reference Figure 6 The drive power transmission line 120 according to this embodiment is similar to that according to reference. Figure 5 The described implementation of the drive power transmission line 120.

[0079] The drive power transmission line 120 includes a pad portion 12 disposed at its end, through which drive power received from the outside can be provided. The drive power transmission line 120 includes a first drive power transmission line 120p disposed beneath insulating layers 130 and 140 and a second drive power transmission line 120q disposed on insulating layers 130 and 140, with insulating layers 130 and 140 disposed between the first drive power transmission line 120p and the second drive power transmission line 120q. The first drive power transmission line 120p of the drive power transmission line 120 can be formed in the same layer as the gate lines G1, ..., and Gn, and the second drive power transmission line 120q of the drive power transmission line 120 can be formed in the same layer as the data lines D1, ..., and Dm.

[0080] With reference Figure 5 Unlike the described drive power transmission line 120, a high-resistance portion 21a with a relatively narrow width may be included between a first portion 120pa and a second portion 120pb of the first drive power transmission line 120p of the display device according to this embodiment. The relatively narrow-width high-resistance portion 21a can reduce the impact of the drive power applied to the first portion 120pa of the first drive power transmission line 120p on the second portion 120pb of the first drive power transmission line 120p. The high-resistance portion 21a may have a narrower width than the other portions of the first drive power transmission line 120p; for example, the width of the high-resistance portion 21a may be approximately 1 / 10 of the width of the other portions of the first drive power transmission line 120p.

[0081] Except for forming a high-resistance portion 21a instead of a cutout 21 between the first portion 120pa and the second portion 120pb of the first drive power transmission line 120p, according to reference Figure 5 Other features of the display device described in the embodiments may be applied to the display device according to this embodiment.

[0082] According to this embodiment, the first drive power transmission line 120p of the drive power transmission line 120 is divided into a first portion 120pa and a second portion 120pb. However, the first portion 120pa and the second portion 120pb are connected by a high-resistance portion 21a with a relatively narrow width. Therefore, the voltage difference caused by the voltage drop that occurs in the first portion 120pa of the first drive power transmission line 120p has a relatively small impact on the second portion 120pb of the first drive power transmission line 120p. Therefore, when drive power is applied to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8, the impact of the voltage difference that may occur due to the voltage drop between the first gate driver GC1 and the second gate driver GC2 can be relatively reduced. The voltage drop between the first gate driver GC1 and the second gate driver GC2 is maintained for the longest time period due to its proximity to the pad portion 12. Furthermore, the voltage difference that may occur due to the voltage drop between the first gate driver GC1 and the second gate driver GC2, and which may be maintained while the gate drivers are driven in reverse order from the eighth gate driver GC8 to the third gate driver GC3, can be maintained only during the time period when the first gate driver GC1 and the second gate driver GC2 are driven, thereby preventing dark lines and the like that that would otherwise occur due to the longer duration of the voltage difference.

[0083] The first portion 120pa of the first drive power transmission line 120p is connected to the second drive power transmission line 120q through a first contact hole 31a configured to be adjacent to the pad portion 12, and no contact hole for connecting the first drive power transmission line 120p and the second drive power transmission line 120q is provided at the portion corresponding to the first gate driver GC1 and the second gate driver GC2 connected to the first portion 120pa of the first drive power transmission line 120p in the direction extending along the gate lines G1, ..., and Gn.

[0084] Furthermore, drive power can be applied to the third gate driver GC3 to the eighth gate driver GC8 through the second drive power transmission line 120q. The second drive power transmission line 120q is connected to the first drive power transmission line 120p through the second contact hole 31b formed in the insulating layers 130 and 140, thereby preventing voltage drop of the drive power that may be caused by the resistance of the drive power transmission line 120.

[0085] In the following text, reference will be made to Figure 7 Describes a display device according to an embodiment. Figure 7 A schematic perspective view of a display device according to an embodiment is shown.

[0086] Reference Figure 7 The display device 2000 according to this embodiment is similar to that according to reference. Figures 2 to 4 The display device described in the embodiment. Detailed descriptions of the same components will be omitted.

[0087] The drive power transmission line 120 may have pad portions 12 disposed at its ends, and drive power received from the outside can be provided through the pad portions 12. The drive power transmission line 120 includes a first drive power transmission line 120p disposed under insulating layers 130 and 140 and a second drive power transmission line 120q disposed on insulating layers 130 and 140, with insulating layers 130 and 140 disposed between the first drive power transmission line 120p and the second drive power transmission line 120q. The first drive power transmission line 120p and the second drive power transmission line 120q are connected to each other through contact holes 31 formed in insulating layers 130 and 140.

[0088] In the display device 2000 according to this embodiment, the drive power transmission line 120 may include a first drive power transmission line 120p directly connected to gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 and receiving drive power through pad portion 12, and a second drive power transmission line 120q overlapping the first drive power transmission line 120p. Insulating layers 130 and 140 are disposed between the first drive power transmission line 120p and the second drive power transmission line 120q, and the second drive power transmission line 120q is connected to the first drive power transmission line 120p through contact holes 31 formed in the insulating layers 130 and 140.

[0089] The display device 2000 includes a display panel, and the display panel includes a first display panel 100 and a second display panel 200 connected to each other. (Refer to the above...) Figures 2 to 4In a different implementation, the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8 of the display device 2000 are attached to a side surface of the display panel. A drive power transmission line 120 may be provided in the first display panel 100. Multiple data drivers DC may also be attached to the other side surface of the display panel. Specifically, each of the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8 may be attached to a corresponding gate driver circuit board GCB, and each of the data drivers DC may be attached to a corresponding data driver circuit board DCB in the form of at least one integrated circuit chip. The gate driver circuit board GCB and the data driver circuit board DCB may be attached to the corresponding side surface of the display panel.

[0090] According to this embodiment, the drive power transmission line 120 includes a first drive power transmission line 120p that is directly connected to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 and receives drive power through the pad portion 12, and a second drive power transmission line 120q that is connected to the first drive power transmission line 120p to reduce the resistance of the drive power transmission line 120, thereby reducing the voltage drop of the drive power. Furthermore, since the drive power is transmitted simultaneously through both the first drive power transmission line 120p and the second drive power transmission line 120q, even when the drive power applied to the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 through the first drive power transmission line 120p experiences a voltage drop due to the resistance of each gate driver GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8, the voltage drop can be compensated by the drive power transmitted through the second drive power transmission line 120q, thereby preventing or reducing the voltage drop of the drive power caused by the resistance of the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8.

[0091] Furthermore, according to the display device 2000 of this embodiment, by attaching the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 and the data driver DC to the side surface of the display panel, the width of the non-display area PA can be further narrowed.

[0092] In the following text, reference will be made to Figure 8 A display device according to an exemplary embodiment is described. Figure 8 A schematic perspective view of a display device according to an embodiment is shown.

[0093] refer to Figure 8 The display device 3000 according to this embodiment is similar to that according to the reference. Figure 5The display device described in the embodiment. Detailed descriptions of the same components will be omitted.

[0094] Similar to reference Figure 5 The described embodiment of the display device's drive power transmission line 120 has a first drive power transmission line 120p divided into a first portion 120pa and a second portion 120pb by a cut 21. The cut 21 of the first drive power transmission line 120p is positioned closer to the pad portion 12 relative to the center of the first drive power transmission line 120p. Therefore, the length of the first portion 120pa of the first drive power transmission line 120p is shorter than the length of the second portion 120pb of the first drive power transmission line 120p.

[0095] The display device 3000 includes a display panel, and the display panel includes a first display panel 100 and a second display panel 200 connected to each other. (Refer to reference...) Figure 5 The display devices described in the embodiments differ, but in the display device 3000, gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8 are attached to the side surface of the display panel. A drive power transmission line 120 may be provided in the first display panel 100. Multiple data drivers DC may also be attached to the other side surface of the display panel. Specifically, each of the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8 may be attached to a corresponding gate driver circuit board GCB, and each of the data drivers DC may be attached to a corresponding data driver circuit board DCB in the form of at least one integrated circuit chip. The gate driver circuit board GCB and the data driver circuit board DCB may be attached to the corresponding side surface of the display panel.

[0096] A first portion 120pa of the first drive power transmission line 120p is connected to the second drive power transmission line 120q via a first contact hole 31a positioned adjacent to the pad portion 12. No contact holes for connecting the first drive power transmission line 120p and the second drive power transmission line 120q are provided at portions corresponding to the first gate driver GC1 and the second gate driver GC2 along the direction extending along the gate lines G1, ..., Gn. The second drive power transmission line 120q is connected to a second portion 120pb of the first drive power transmission line 120p via a plurality of second contact holes 31b.

[0097] In this way, the effect of the voltage drop of the drive power that may occur between the first gate driver GC1 and the second gate driver GC2 can only affect the first portion 120pa of the first drive power transmission line 120p due to the separation between the first portion 120pa and the second portion 120pb through the cut 21, and can prevent the effect from propagating to the second portion 120pb of the first drive power transmission line 120p.

[0098] The second portion 120pb of the first drive power transmission line 120p is connected to the second drive power transmission line 120q of the drive power transmission line 120 through the second contact hole 31b formed in the insulating layers 130 and 140 to receive drive power. Therefore, the drive power applied to the second drive power transmission line 120q is unaffected by the voltage drop that may occur between the first gate driver GC1 and the second gate driver GC2.

[0099] Therefore, when drive power is applied to gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7, and GC8, the effect of the voltage drop of the drive power between the first gate driver GC1 and the second gate driver GC2, which is maintained for the longest period due to proximity to pad portion 12, can be reduced or eliminated. Furthermore, the effect of the voltage difference that may be caused by the first gate driver GC1 and the second gate driver GC2, and which can be maintained while the gate drivers are driven in reverse order from the eighth gate driver GC8 to the third gate driver GC3, can be maintained only during the period when the first gate driver GC1 and the second gate driver GC2 are driven, thereby preventing dark lines and other issues that might otherwise occur due to the longer duration of the voltage difference.

[0100] Drive power can be applied to the third gate driver GC3 to the eighth gate driver GC8 through the second drive power transmission line 120q. The second drive power transmission line 120q is connected to the first drive power transmission line 120p through the second contact hole 31b formed in the insulating layers 130 and 140, thereby preventing voltage drop of the drive power that may be caused by the resistance of the drive power transmission line 120.

[0101] Furthermore, according to the display device 3000 of this embodiment, the width of the non-display area PA can be further narrowed by attaching the gate drivers GC1, GC2, GC3, GC4, GC5, GC6, GC7 and GC8 and the data driver DC to the side surface of the display panel.

[0102] although Figure 8 An embodiment is shown in which the first drive power transmission line 120p is divided into a first portion 120pa and a second portion 120pb by a cut 21, but this disclosure is not limited thereto. According to one embodiment, such as Figure 6 As shown, a high-resistance portion 21a with a narrow width can connect a first portion 120pa and a second portion 120pb of the first drive power transmission line 120p to reduce or prevent the effect of the voltage difference of the drive power in the first portion 120pa of the first drive power transmission line 120p on the second portion 120pb of the first drive power transmission line 120p.

[0103] In the following text, reference will be made to Figures 9 to 11 Describe an experimental example. Figure 9 The waveform diagram of the drive signal of the display device according to the comparative example is shown. Figure 10 It shows that according to Figure 9 The image of the display device in the comparative example, and Figure 11 A waveform diagram of the drive signal of a display device according to an embodiment is shown.

[0104] refer to Figures 1 to 8 , Figure 9 A comparative example of a conventional display device is shown, wherein drive power is applied to the gate driver GC of the display device via drive power transmission line 120. Figure 9 In the process, the driving voltage V1 is measured by the first gate driver GC1 adjacent to the pad portion 12 of the driving power transmission line 120, the driving voltage V2 is measured by the second gate driver GC2, the driving voltage V3 is measured by the third gate driver GC3, the driving voltage V4 is measured by the seventh gate driver GC7, and the driving voltage V5 is measured by the eighth gate driver GC8 which is furthest from the pad portion 12 of the driving power transmission line 120. Figure 10 These are electron micrographs of conventional display devices in the off state. The driving voltages V1 to V5 can be the gate cutoff voltage Voff. Figure 9 The x-axis represents the time T encompassing one image frame.

[0105] Reference Figure 9 The voltage difference between the drive voltage V1 of the first gate driver GC1 and the drive voltage V2 of the second gate driver GC2, which are adjacent to the pad portion 12, is the largest among the voltage differences between other drive voltages, and the duration of the voltage difference between the first gate driver GC1 and the second gate driver GC2 is almost equal to the duration of an image frame. On the other hand, the voltage difference between the drive voltage V4 of the seventh gate driver GC7 and the drive voltage V5 of the eighth gate driver GC8, which is set to be furthest from the pad portion 12 of the drive power transmission line 120, only occurs during the time period when the eighth gate driver GC8 and the seventh gate driver GC7 are driven.

[0106] Figure 10The voltage difference in the drive power of each gate driver based on the pad portion 12 is shown to be a dark line that extends parallel to the direction of the gate lines G1, ..., and Gn.

[0107] refer to Figures 1 to 8 , Figure 11 An example according to an embodiment is shown, wherein the drive power transmission line 120 is formed as a double layer including a first drive power transmission line 120p and a second drive power transmission line 120q. The first drive power transmission line 120p of the drive power transmission line 120 can be divided by a cutout 21 into a first portion 120pa and a second portion 120pb of the first drive power transmission line 120p. The first portion 120pa of the first drive power transmission line 120p can be connected to the second drive power transmission line 120q only in the portion adjacent to the pad portion 12, and the second drive power transmission line 120q can be connected to the second portion 120pb of the first drive power transmission line 120p through a contact hole 31.

[0108] Drive power is transmitted to gate drivers GC1 to GC8 via drive power transmission line 120. Figure 11 The driving voltages V1, V2, V3, V4 of the first gate driver GC1, V5 of the second gate driver GC2, V3 of the third gate driver GC3, V4 of the seventh gate driver GC7, and V5 of the eighth gate driver GC8, which is furthest from the pad portion 12 of the drive power transmission line 120, are shown. Driving voltages V1 to V5 can be gate cutoff voltages Voff. Figure 11 The x-axis represents the time T encompassing one image frame.

[0109] and Figure 9 compared to, Figure 11 The voltage difference between the drive voltage V1 of the first gate driver GC1 and the drive voltage V2 of the second gate driver GC2 adjacent to the pad portion 12 is shown to decrease, and the drive voltage V1 of the first gate driver GC1 and the drive voltage V2 of the second gate driver GC2 remain substantially the same for most of the time period within an image frame (e.g., 1 ms to 6.5 ms). Furthermore, the voltage difference between the drive voltage V1 of the first gate driver GC1 and the drive voltage V2 of the second gate driver GC2 is sustained only during the period in which the second gate driver GC2 and the first gate driver GC1 are driven.

[0110] As described above, dark lines may appear due to the long duration of the drive voltage difference. By shortening the time period of the long-duration voltage difference between the drive voltage V1 of the first gate driver GC1 and the drive voltage V2 of the second gate driver GC2, the dark lines can be reduced to undetectable levels.

[0111] also, Figure 11 The voltage difference in the drive power between two adjacent gate drivers is shown to be almost identical. Specifically, the absolute values ​​of the voltage differences appearing at approximately 6 milliseconds, approximately 7 milliseconds, and approximately 8 milliseconds are almost the same.

[0112] Thus, the display device according to this embodiment can reduce the variation difference of the drive signal applied to the gate driver.

[0113] Although this disclosure has been described in conjunction with exemplary embodiments, it should be understood that this disclosure is not limited to the exemplary embodiments disclosed herein, and is intended to cover various modifications and equivalent arrangements included within the spirit and scope of this disclosure, including the appended claims.

[0114] <Label Description>

[0115] 1000, 2000, 3000: Display devices

[0116] 120: Drive power transmission line

[0117] 120P: First drive power transmission line

[0118] 120q: Second drive power transmission line

[0119] 120pa: Part 1

[0120] 120pb: Part Two

[0121] 130, 140: Insulation layer

[0122] 21: Incision

[0123] 21a: High resistance section

[0124] 31, 31a, 31b: Contact holes

[0125] G1, Gn: Gate lines

[0126] D1, Dm: Data cable

[0127] GC, GC1, GC2, GC3, GC4, GC5, GC6, GC7, GC8: Gate drivers

[0128] DC: Data Driver

[0129] DA: Display Area

[0130] PA: Non-display area

Claims

1. A display device, including: The display area includes multiple signal lines, which in turn include multiple gate lines; Multiple gate drivers are disposed in a non-display area adjacent to the display area and connected to the multiple gate lines; as well as A drive power transmission line is disposed in the non-display area and provides drive power to the plurality of gate drivers. The driving power transmission line includes a first driving power transmission line and a second driving power transmission line that overlap each other, wherein an insulating layer is provided between the first driving power transmission line and the second driving power transmission line. The first drive power transmission line comprises a first part and a second part that are separated from each other by a cut. The first drive power transmission line includes a pad portion that provides the drive power, and the first portion is connected to the pad portion. The first portion of the first drive power transmission line is connected to the second drive power transmission line through a first contact hole formed in the insulating layer. The first contact hole is positioned adjacent to the pad portion, but does not overlap with the plurality of gate drivers in a direction parallel to the extension direction of the plurality of gate lines. The second portion of the first drive power transmission line is connected to the second drive power transmission line through a plurality of second contact holes formed in the insulating layer, and The plurality of second contact holes are configured to overlap with one or more of the plurality of gate drivers in a direction parallel to the extension direction of the plurality of gate lines.

2. The display device according to claim 1, wherein, The first length of the first part is shorter than the second length of the second part.

3. The display device according to claim 1, in, The multiple signal lines also include multiple data lines, and The first drive power transmission line is disposed on the same layer as the plurality of gate lines, and the second drive power transmission line is disposed on the same layer as the plurality of data lines.

4. The display device according to claim 1, wherein, The plurality of gate drivers are attached to the side surface of the display device.

5. Display devices, including: The display area includes multiple signal lines, which in turn include multiple gate lines; Multiple gate drivers are disposed in a non-display area adjacent to the display area and connected to the multiple gate lines; as well as A drive power transmission line is disposed in the non-display area and provides drive power to the plurality of gate drivers. The driving power transmission line includes a first driving power transmission line and a second driving power transmission line that overlap each other, wherein an insulating layer is provided between the first driving power transmission line and the second driving power transmission line. The first drive power transmission line includes a first part and a second part connected to the high-resistance portion. The first drive power transmission line includes a pad portion that provides the drive power, and the first portion is connected to the pad portion. The first portion of the first drive power transmission line is connected to the second drive power transmission line through a first contact hole formed in the insulating layer. The first contact hole is positioned adjacent to the pad portion, but does not overlap with the plurality of gate drivers in a direction parallel to the extension direction of the plurality of gate lines. The second portion of the first drive power transmission line is connected to the second drive power transmission line through a plurality of second contact holes formed in the insulating layer, and The plurality of second contact holes are configured to overlap with one or more of the plurality of gate drivers in a direction parallel to the extension direction of the plurality of gate lines.

6. The display device according to claim 5, wherein, The first width of the high-resistance portion is narrower than the second width of the first drive power transmission line.

7. The display device according to claim 6, wherein, The first width of the high-resistance portion is 1 / 10 of the second width of the first drive power transmission line.

8. The display device according to claim 6, wherein, The first length of the first part is shorter than the second length of the second part.

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