Display panel

Abstract

The display panel provided by the application comprises a display panel, a display area, a pad area arranged apart from one side of the display area in a first direction, and a first signal pad to an n-th signal pad (wherein n is an integer greater than or equal to 2), which are arranged on the pad area of the display panel, extend in the first direction and are apart from each other along a second direction perpendicular to the first direction. A k-th signal pad (wherein k is an integer between 1 and n) in the first signal pad to the n-th signal pad is arranged between the first signal pad and the n-th signal pad. The length of the k-th signal pad to the n-th signal pad in the first direction of each of the k-th signal pad to the n-th signal pad gradually increases. The width of the k-th signal pad to the n-th signal pad in the second direction of each of the k-th signal pad to the n-th signal pad gradually decreases.

Description

Technical Field

[0001] This invention relates to display panels. Background Technology

[0002] Recently, flat panel display devices such as liquid crystal displays (LCDs) and organic light-emitting diode (OLEDs) have been widely used. Such display devices may include pixels disposed in a display area and signal lines disposed in the display area and connected to the pixels. Additionally, the display device may include signal pads and fan-out lines disposed around the periphery of the display area to transmit signals and / or voltages generated from a driver integrated circuit (IC) to the signal lines.

[0003] To achieve a narrow bezel, the width of the fan-out area configured with the fan-out lines needs to be reduced. However, the increasing number of fan-out lines connected to a driver integrated circuit, and the increasing number of driver integrated circuits used in display panels due to the larger size of display devices, limits the ability to reduce the width of the fan-out area. Summary of the Invention

[0004] The purpose of this invention is to provide a display panel with reduced dead space.

[0005] However, the present invention is not limited to the above-described objectives and can be extended in various ways without departing from the concept and scope of the present invention.

[0006] To achieve the aforementioned objective of the present invention, a display panel according to an embodiment of the present invention includes: a display plate, including a display area and a pad area spaced apart from one side of the display area in a first direction; and first signal pads to nth signal pads (where n is an integer greater than or equal to 2), disposed on the pad area of ​​the display plate, extending in the first direction and spaced apart from each other in a second direction perpendicular to the first direction. A kth signal pad (where k is an integer between 1 and n) is disposed between the first signal pad and the nth signal pad. The length of each of the first signal pads to the nth signal pads gradually increases in the first direction. The width of each of the kth signal pads to the nth signal pads gradually decreases in the second direction.

[0007] In an exemplary embodiment, the distances between the first signal pad and the nth signal pad in the second direction may be the same.

[0008] In an exemplary embodiment, the first signal pad to the nth signal pad on the display panel may have the same area.

[0009] In an exemplary embodiment, each of the first signal pads to the nth signal pad may include: a first end adjacent to one side of the display area; and a second end opposite to the first end.

[0010] In an exemplary embodiment, a first virtual line may be defined connecting the first ends of the first signal pad to the (k-1)th signal pad among the first signal pads to the nth signal pad. A second virtual line may be defined connecting the first ends of the kth signal pad to the nth signal pad. The first and second virtual lines may each extend relative to the second oblique direction, and the first and second virtual lines may be symmetrical to each other.

[0011] In an exemplary embodiment, a third virtual line may be defined to connect the second ends of the first signal pad to the nth signal pad. The third virtual line may be parallel to the second direction.

[0012] In an exemplary embodiment, the distance in the first direction between one side of the display area and the first ends of each of the k-th signal pads to the n-th signal pads may gradually decrease. Alternatively, the distance in the first direction between one side of the display area and the second ends of each of the k-th signal pads to the n-th signal pads may be the same.

[0013] In an exemplary embodiment, the display panel may further include a fan-out region located between one side of the display area and the pad area. The display panel also includes: first signal lines to nth signal lines disposed on the display area of ​​the display panel; and first fan-out lines to nth fan-out lines disposed on the fan-out region of the display panel, wherein each of the first signal pads to the nth signal pad is connected to each of the first signal lines to the nth signal lines. The kth fan-out line among the first fan-out lines to the nth fan-out lines connects the kth signal pad and the kth signal line among the first signal lines to the nth signal lines.

[0014] In an exemplary embodiment, the k-th signal pad, the k-th fan-out line, and the k-th signal line may each extend in the first direction.

[0015] In an exemplary embodiment, the nth signal pad and the nth signal line may each extend in the first direction. The nth fan-out line extends diagonally relative to the first direction.

[0016] (Invention Effects)

[0017] The display panel according to an embodiment of the present invention may include signal pads whose length gradually increases with distance from the center of the pad area. Therefore, the display device can reduce the width of the fan-out area. Thus, the width of unused space can be reduced to achieve a narrow bezel.

[0018] A display device according to an embodiment of the present invention may include signal pads spaced apart from each other in a direction perpendicular to the length direction and signal terminals overlapping the signal pads. Therefore, poor contact between the signal pads and signal terminals can be reduced even in large display devices using multiple driver integrated circuits.

[0019] However, the effects of the present invention are not limited to those described above, and various extensions can be made without departing from the concept and scope of the present invention. Attached Figure Description

[0020] Figure 1 This is a block diagram illustrating a display device according to an embodiment of the present invention.

[0021] Figure 2 It is shown Figure 1 A plan view of the display device.

[0022] Figure 3 It is shown Figure 2 An exploded 3D view of region A.

[0023] Figure 4 It is a magnified view including the following. Figure 2 A plan view of area A of the display panel in the display device.

[0024] Figure 5 It is used to illustrate that it includes Figure 4 A plan view of the signal pads in the display panel.

[0025] Figure 6 It is used to illustrate that it includes Figure 4 A plan view of the fan-out lines in the display panel.

[0026] Figure 7 It is used to illustrate that it includes Figure 4 A plan view of the power pads in the display panel.

[0027] Figure 8 It is a magnified view including the following. Figure 2 A plan view of region A of the flexible circuit film in the display device.

[0028] Figure 9 It is used to illustrate that it includes Figure 8 A plan view of the signal terminals in the flexible circuit membrane.

[0029] (Explanation of reference numerals in the attached diagram)

[0030] 10: Display device 100: Display panel

[0031] 110: Display board; 120: Signal pads

[0032] 130: Power pad; 200: Flexible circuit film

[0033] 210: Base film; 220: Signal terminal

[0034] 240: Driver integrated circuit; 300: Conductive film

[0035] 400: Printed Circuit Board; DA: Display Area

[0036] PA: Pad area FAN: Fan-out area

[0037] PX: Pixel 140: Signal line

[0038] 150: Fan-out cable Detailed Implementation

[0039] Hereinafter, a display device according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0040] Figure 1 This is a block diagram illustrating a display device 10 according to an embodiment of the present invention.

[0041] Reference Figure 1 The display device 10 may include a display panel 100 and a panel driving unit. The panel driving unit may include a driving control unit CON, a gate driving unit GDV, and a data driving unit DDV.

[0042] The display panel 100 may include a plurality of pixels PX and a plurality of signal lines 140 electrically connected to the plurality of pixels PX. The signal lines 140 may include gate lines GL and data lines DL. For example, each data line DL may extend in a first direction DR1. Each gate line GL may extend in a second direction DR2 intersecting the first direction DR1. Pixels PX may receive signals and / or voltage from the signal lines 140 and emit light.

[0043] The drive control unit CON can generate a gate control signal GCTRL, a data control signal DCTRL, and output image data ODAT based on the input image data IDAT and the input control signal CTRL provided from an external source. For example, the input image data IDAT can be RGB data including red image data, green image data, and blue image data. The input control signal CTRL can include a master clock signal and an input data enable signal. The input control signal CTRL can also include a vertical synchronization signal and a horizontal synchronization signal.

[0044] The gate drive unit (GDV) can generate a gate signal based on the gate control signal GCTRL provided by the drive control unit (CON). For example, the gate control signal GCTRL may include a vertical start signal and a gate clock signal. The gate drive unit (GDV) can sequentially output the gate signal to the gate line GL. For example, the gate drive unit (GDV) may include a gate drive integrated circuit.

[0045] In one embodiment, the signal line 140 may further include a connecting line (not shown) electrically connecting the gate driver unit GDV and the gate line GL. For example, each of the connecting lines may extend in a first direction DR1 and be spaced apart from each other in a second direction DR2. Each of the connecting lines may electrically connect any one of the gate lines GL to the gate driver unit GDV. That is, each gate line GL may receive the gate signal from the gate driver unit GDV through the respective connecting lines. In this case, the gate driver unit GDV and the data driver unit DDV may be configured in the same direction (e.g., the first direction DR1) with reference to the display panel 100.

[0046] The data driver unit (DDV) can generate a data voltage based on the data control signal DCTRL provided by the drive control unit (CON) and the output image data ODAT. For example, the data control signal DCTRL may include an output data enable signal, a level start signal, and a load signal. The data driver unit (DDV) can output the data voltage to the data line DL. For example, the data driver unit (DDV) may include a data driver integrated circuit.

[0047] Figure 2 It is shown Figure 1 A plan view of the display device 10. Figure 3 It is shown Figure 2 An example of an exploded stereoscopic view of region A.

[0048] Reference Figure 2 as well as Figure 3 In one embodiment, the display device 10 may include a display panel 100, a flexible circuit film 200, a conductive film 300, and a printed circuit board 400.

[0049] The display panel 100 may include a display board 110 and pad portions. The display board 110 may include a display area DA and a non-display area NDA located around the display area DA. An image may be displayed in the display area DA. The non-display area NDA may include a pad area PA and a fan-out area FAN located between the display area DA and the pad area PA.

[0050] Pixels PX and signal lines 140 can be configured on display area DA on display panel 110. For example, pixels PX can be arranged in a matrix along a first direction DR1 and a second direction DR2. Each pixel PX may include a thin-film transistor and a pixel electrode connected thereto. The thin-film transistor may include a gate electrode extending from each gate line GL, a source electrode extending from each data line DL, and a drain electrode connected to the pixel electrode.

[0051] The pad portion can be configured on the pad area PA on the display panel 110. The pad portion can include a plurality of signal pads 120. The signal pads 120 can be configured on the top of the display panel 110. For example, the signal pads 120 can include gate signal pads and data signal pads. Each of the gate signal pads can be electrically connected to a respective gate line GL. Each of the data signal pads can be electrically connected to a respective data line DL. For example, the pad portion can also include at least one power pad or a dummy pad.

[0052] In one embodiment, such as Figure 2 As shown, the display panel 110 may include multiple pad areas PA. The display panel 100 may include multiple pad portions. The pad portions may be disposed on each of the multiple pad areas PA on the display panel 110.

[0053] For example, such as Figure 2 As shown, the pad area PA can be disposed on one side of the display panel 110. The pad area PA can be spaced apart from one side of the display area DA in a first direction DR1 and arranged in a second direction DR2. The side of the display area DA can be adjacent to the flexible circuit film 200. As another example, multiple pad areas PA can also be disposed on another side opposite to or adjacent to the side of the display panel 110.

[0054] The flexible circuit film 200 may include a base film 210, terminal portions disposed on the base film 210, and at least one driving integrated circuit 240 disposed on the base film 210. For example, as Figure 2 As shown, the display device 10 may include a plurality of flexible circuit films 200.

[0055] For example, such as Figure 2 As shown, one end of the base film 210 overlaps with the display panel 100, and the other end of the base film 210 overlaps with the printed circuit board 400. The base film 210 may contain a flexible material. Therefore, the printed circuit board 400 can be bent downwards towards the display panel 100 via the flexible circuit film 200.

[0056] The terminal portion may be disposed below the base film 210. The terminal portion may overlap with one end of the base film 210. That is, the terminal portion may be disposed below the base film 210 to overlap with the display panel 100. For example, the terminal portion may overlap with the pad portion. The terminal portion may include a plurality of signal terminals 220. The signal terminals 220 may be disposed below the base film 210. The signal terminals 220 may include gate signal terminals and data signal terminals. Each signal terminal 220 may be electrically connected to a respective signal pad 120. For example, the terminal portion may also include at least one power terminal or a dummy terminal.

[0057] The driver integrated circuit 240 can be either the gate driver integrated circuit or the data driver integrated circuit. For example, the gate driver integrated circuit can be electrically connected to the gate signal terminal. The data driver integrated circuit can be electrically connected to the data signal terminal. For example, a flexible circuit film 200 may also include multiple driver integrated circuits 240.

[0058] The conductive film 300 can be disposed between the display panel 100 and the flexible circuit film 200. For example, the conductive film 300 may include anisotropic conductive film (ACF). For example, the conductive film 300 may overlap with the pad portion of the display panel 100 and the terminal portion of the flexible circuit film 200. The signal terminal 220 can be electrically connected to the signal pad 120 through the conductive film 300.

[0059] The gate signal generated by the gate driver integrated circuit can be output to the gate line GL through the gate signal terminal, the conductive film 300, and the gate signal pad. The data voltage generated by the data driver integrated circuit can be output to the data line DL through the data signal terminal, the conductive film 300, and the data signal pad.

[0060] The printed circuit board 400 may be disposed at the other end of the base film 210. For example, the printed circuit board 400 may include a drive control unit CON.

[0061] Figure 4 It is a magnified view including the following. Figure 2 A plan view of an example of region A of the display panel 100 in the display device 10. Figure 5 It is shown that it includes Figure 4 A plan view of an example of the signal pads 120 in the display panel 100.

[0062] The following is for reference Figure 4 as well as Figure 5This describes a plurality of signal pads 120 included in the pad portion configured in a pad region PA, but it can be applied to each of the plurality of pad portions configured in the plurality of pad regions PA.

[0063] Reference Figure 4 as well as Figure 5 The pad area PA on the display panel 110 can be configured with the pad portion. For example, the pad area PA can be spaced apart from the side of the display area DA in the first direction DR1. The pad portion can include a plurality of signal pads 120. For example, the pad portion can include a first signal pad 122 to an nth (where n is an integer greater than or equal to 2) signal pad 126.

[0064] Each signal pad 120 can extend in the first direction DR1. For example, the first signal pad 122 to the nth signal pad 126 can each extend in the first direction DR1.

[0065] The signal pads 120 can be spaced apart from each other along the second direction DR2. For example, the first signal pad 122 to the nth signal pad 126 can be spaced apart from each other along the second direction DR2. The second direction DR2 can intersect the first direction DR1 perpendicularly.

[0066] In one embodiment, signal pads 120 may be spaced apart from each other at the same distance along the second direction DR2. For example, the first signal pad 122 to the nth signal pad 126 may be spaced apart at substantially the same distance D1 along the second direction DR2.

[0067] For example, such as Figure 5 As shown, the pad area PA may include a central portion PAC, a first side portion PA1 located from the central portion PAC in a direction opposite to the second direction DR2, and a second side portion PA2 located from the central portion PAC in the second direction DR2.

[0068] In one embodiment, the first signal pad 122 of the first signal pads 122 to the nth signal pads 126 may be disposed on a first side PA1 of the pad region PA. For example, the first signal pad 122 may be disposed at the end of the pad region PA in the direction opposite to the second direction DR2. The kth signal pad 124 of the first signal pads 122 to the nth signal pads 126 (where k is an integer between 1 and n) may be disposed in the central part PAC of the pad region PA. The nth signal pad 126 of the first signal pads 122 to the nth signal pads 126 may be disposed on a second side PA2 of the pad region PA. For example, the nth signal pad 126 may be disposed at the end of the second direction DR2 of the pad region PA. The kth signal pad 124 may be disposed between the first signal pad 122 and the nth signal pad 126.

[0069] In one embodiment, such as Figure 5 As shown, signal pads 120 disposed on the first side PA1 of pad region PA and signal pads 120 disposed on the second side PA2 can be symmetrical to each other. For example, a center line CL of pad region PA extending in the first direction DR1 and located in the central part PAC can be defined. The first signal pad 122 and the nth signal pad 126 can be symmetrical to each other with reference to the center line CL. The (k-1)th signal pad and the kth signal pad 124 among the first signal pads 122 to the nth signal pads 126 can be symmetrical to each other with reference to the center line CL.

[0070] In another embodiment, the signal pad 120 disposed on the first side PA1 of the pad region PA and the signal pad 120 disposed on the second side PA2 can also be asymmetrical with respect to the center line CL.

[0071] In one embodiment, the length of each signal pad 120 in the first direction DR1 can gradually increase as it moves away from the central portion PAC of the pad region PA. The width of each signal pad 120 in the second direction DR2 can gradually decrease as it moves away from the central portion PAC of the pad region PA. In other words, the length of each signal pad 120 in the first direction DR1 can gradually increase and the width in the second direction DR2 can gradually decrease as it moves away from the central portion PAC of the pad region PA towards the first side PA1 or the second side PA2. That is, the length of each signal pad 120 in the first direction DR1 can gradually increase and the width in the second direction DR2 can gradually decrease as it moves closer to one end and the other end of the pad region PA, respectively. One end of the pad region PA can be the end point on the second direction DR2 side (e.g., the right end), and the other end can be the end point on the side opposite to the second direction DR2 (e.g., the left end).

[0072] For example, the lengths of the k-th signal pads 124 to 126 in the first direction DR1 of the first signal pads 122 to 126 can gradually increase, while the widths of the k-th signal pads 124 to 126 in the second direction DR2 of the first signal pads 124 to 126 can gradually decrease. That is, the length L1 of the k-th signal pad 124 in the first direction DR1 can be less than the length L2 of the n-th signal pad 126 (or, the first signal pad 122) in the first direction DR1. The width W1 of the k-th signal pad 124 in the second direction DR2 can be greater than the width W2 of the n-th signal pad 126 (or, the first signal pad 122) in the second direction DR2.

[0073] In one embodiment, the areas of the signal pads 120 disposed in the pad region PA on the display panel 110 can be substantially the same. That is, the areas of the signal pads 120 can be substantially the same on a plane (e.g., on the top of the display panel 110).

[0074] For example, on the plane, the areas of the first signal pad 122 to the nth signal pad 126 can be substantially the same. That is, on the plane, the areas of the first signal pad 122, the kth signal pad 124, and the nth signal pad 126 can be substantially the same. In other words, while maintaining substantially the same area, the length of the kth signal pad 124 to the nth signal pad 126 can gradually increase in the first direction DR1, and the width can gradually decrease in the second direction DR2.

[0075] Each signal pad 120 may include a first end 120a adjacent to one side of the display area DA and a second end 120b opposite to the first end 120a. For example, the side of the display area DA may be the end adjacent to the pad area PA. The second end 120b may be located at a position extending from the first end 120a along a first direction DR1.

[0076] In one embodiment, the virtual line connecting the first end 120a of the signal pad 120 may have a shape bent toward the first direction DR1.

[0077] For example, such as Figure 5 As shown, a first virtual line IL1 can be defined connecting the first ends of the first signal pads 122 to (k-1)th signal pads 126, and a second virtual line IL2 can be defined connecting the first ends of the kth signal pads 124 to the nth signal pads 126. In this case, the first virtual line IL1 and the second virtual line IL2 can each extend in a diagonal direction relative to the first direction DR1 and the second direction DR2. Furthermore, the first virtual line IL1 and the second virtual line IL2 can be symmetrical about each other with respect to the center line CL.

[0078] In one embodiment, as the central portion PAC of the pad region PA moves away from the central portion PAC, the distance in the first direction DR1 between one side of the display region DA and the first end 120a of each signal pad 120 can gradually decrease.

[0079] For example, the distance along the first direction DR1 between one side of the display area DA and the first ends of each of the k-th signal pad 124 to the n-th signal pad 126 can gradually decrease. That is, the distance D2 along the first direction DR1 between one side of the display area DA and the first end 124a of the k-th signal pad 124 can be greater than the distance D3 along the first direction DR1 between one side of the display area DA and the first end 126a of the n-th signal pad 126.

[0080] In one embodiment, the virtual line connecting the second ends 120b of the plurality of signal pads 120 can be parallel to the second direction DR2.

[0081] For example, such as Figure 5 As shown, a third virtual line IL3 can be defined to connect the second ends of the first signal pad 122 to the nth signal pad 126. In this case, the third virtual line IL3 can extend parallel to the second direction DR2.

[0082] In one embodiment, the distance in the first direction DR1 between one side of the display area DA and the second end 120b of the signal pad 120 can be substantially the same.

[0083] For example, the distance in the first direction DR1 between one side of the display area DA and the second end of the k-th signal pad 124 to the n-th signal pad 126 can be substantially the same. That is, the distance D4 in the first direction DR1 between one side of the display area DA and the second end 124b of the k-th signal pad 124 can be the same as the distance D4 in the first direction DR1 between one side of the display area DA and the second end 126b of the n-th signal pad 126.

[0084] Figure 6 It is shown that it includes Figure 4 A plan view of an example of the fan-out line 150 in the display panel 100.

[0085] Reference Figure 6 The display panel 100 may also include a plurality of fan-out lines 150 configured in the fan-out region FAN. The fan-out region FAN may be located between one side of the display region DA and the pad region PA. For example, the fan-out region FAN may be located at a position extending from the display region DA along a first direction DR1.

[0086] Fan-out line 150 can electrically connect signal line 140 configured in display area DA and signal pad 120 configured in pad area PA. Signal line 140 can include first signal line 142 to nth signal line 146. For example, fan-out line 150 can include first fan-out line 152 to nth fan-out line 156 that electrically connect the first signal line 142 to nth signal line 146 and the first signal pad 122 to nth signal pad 126 respectively.

[0087] For example, the k-th fan-out line 154 (where k is an integer between 1 and n) among the first fan-out lines 152 to the nth fan-out lines 156 can electrically connect the k-th signal line 144 among the first signal lines 142 to the nth signal lines 146 and the k-th signal pad 124 among the first signal pads 122 to the nth signal pads 126. That is, the first fan-out line 152 among the first fan-out lines 152 to the nth fan-out lines 156 can electrically connect the first signal line 142 and the first signal pad 122. The k-th fan-out line 154 among the first fan-out lines 152 to the nth fan-out lines 156 can electrically connect the k-th signal line 144 and the k-th signal pad 124. The n-th fan-out line 156 among the first fan-out lines 152 to the nth fan-out lines 156 can electrically connect the n-th signal line 146 and the n-th signal pad 126.

[0088] In one embodiment, the first end 150a of each fan-out line 150 may contact the respective signal pad 120, and the second end 150b opposite to the first end 150a may contact the respective signal line 140. That is, the first end of each of the first fan-out lines 152 to the nth fan-out line 156 may contact the respective first signal pad 122 to the nth signal pad 126, and the second end of each of the first fan-out lines 152 to the nth fan-out line 156 may contact the respective first signal line 142 to the nth signal line 146. In other words, the first end 152a of the first fan-out line 152 may contact the first signal pad 122, and the second end 152b may contact the first signal line 142. Similarly, the first end 154a of the kth fan-out line 154 may contact the kth signal pad 124, and the second end 154b may contact the kth signal line 144. It is possible that the first end 156a of the nth fan-out line 156 contacts the nth signal pad 126, and the second end 156b contacts the nth signal line 146.

[0089] In one embodiment, the distance in the first direction DR1 between one side of the display area DA and the respective first end 150a of the fan-out line 150 can gradually decrease as one moves from the center of the fan-out region PA to the periphery. The one side of the display area DA may be the end adjacent to the fan-out region PA.

[0090] For example, the distance in the first direction DR1 between one side of the display area DA and the first ends of each of the k-th fan-out lines 154 to n-th fan-out lines 156 can gradually decrease. That is, the distance D2 in the first direction DR1 between one side of the display area DA and the first end 154a of the k-th fan-out line 154 can be greater than the distance D3 in the first direction DR1 between one side of the display area DA and the first end 156a of the n-th fan-out line 156. In other words, the fan-out area FAN may include a protrusion protruding toward the pad area PA. At least a portion of each fan-out line 150 disposed in the central portion of the fan-out area FAN may be located at the protrusion of the fan-out area FAN.

[0091] In one embodiment, to prevent or reduce resistance deviation between fan-out lines 150, the lengths of the fan-out lines 150 can be substantially the same. That is, the lengths of the first fan-out line 152 to the nth fan-out line 156 can be substantially the same.

[0092] For example, the spacing in the second direction DR2 between the signal pads 120 disposed in the pad area PA can be smaller than the spacing in the second direction DR2 between the signal lines 140 disposed in the display area DA. Thus, each fan-out line 150 can extend obliquely relative to the first direction DR1, moving away from the central portion of the fan-out area FAN.

[0093] For example, such as Figure 6 As shown, at least a portion of each of the first fan-out line 152 and the nth fan-out line 156 can extend approximately obliquely relative to the first direction DR1. That is, the first signal pad 122 can extend approximately in the first direction DR1, the first fan-out line 152 can extend in an oblique direction approximately inclined at a first angle relative to the first direction DR1, and the first signal line 142 can extend approximately in the first direction DR1. Alternatively, the nth signal pad 126 can extend approximately in the first direction DR1, the nth fan-out line 156 can extend in an oblique direction approximately inclined at a second angle relative to the first direction DR1, and the nth signal line 146 can extend approximately in the first direction DR1. For example, the first fan-out line 152 and the nth fan-out line 156 can be symmetrical about each other with respect to the center line CL.

[0094] For example, at least a portion of the k-th sector line 154 may extend substantially parallel to the first direction DR1. That is, the k-th signal pad 124, the k-th sector line 154, and the k-th signal line 144 may extend substantially parallel to the first direction DR1.

[0095] In one embodiment, at least one of the fan-out lines 150 may include a patterned portion for reducing length deviations. The patterned portion may include a zigzag pattern. For example, the straight-line distance between the first end 150a and the second end 150b of each fan-out line 150 may differ depending on factors such as the difference between the length L1 of the k-th signal pad 124 and the length L2 of the n-th signal pad 126, the difference between the distance D3 between one side of the display area DA and the first end 124a of the k-th signal pad 124 and the distance D2 between one side of the display area DA and the first end 126a of the n-th signal pad 126, and the angle at which the straight line extending the first end 156a and the second end 156b of the n-th fan-out line 156 is tilted relative to the first direction DR1. Therefore, when each fan-out line 150 is formed in a straight line, resistance deviations caused by length deviations of each fan-out line 150 may occur. Therefore, to reduce these length deviations, at least one of the fan-out lines 150 may also include the patterned portion.

[0096] For example, as the central portion moves away from the fan-out region FAN, the length of the patterned portion included in each fan-out line 150 can gradually decrease. That is, when the straight-line distance between the first end 154a and the second end 154b of the k-th fan-out line 154 is less than the straight-line distance between the first end 156a and the second end 156b of the n-th fan-out line 156, the length of the patterned portion included in the k-th fan-out line 154 can be greater than the length of the patterned portion included in the n-th fan-out line 156. In this case, the n-th fan-out line 156 may also not include the patterned portion. That is, the n-th fan-out line 156 can be formed in a straight line.

[0097] In another embodiment, each fan-out line 150 may not include the patterned portion. That is, each fan-out line 150 may be formed in a straight line. For example, when the straight-line distance between the first end 154a and the second end 154b of the k-th fan-out line 154 is substantially the same as the straight-line distance between the first end 156a and the second end 156b of the n-th fan-out line 156, the k-th fan-out line 154 and the n-th fan-out line 156 may each not include the patterned portion.

[0098] In conventional display devices, the straight-line distance between the two ends of a fan-out line disposed in the center of the fan-out area (i.e., the straight-line distance between one end of a signal pad and one end of a signal line) may deviate significantly from the straight-line distance between the two ends of a fan-out line disposed in the periphery of the fan-out area. Therefore, to reduce the length deviation between these fan-out lines, the fan-out line disposed in the center of the fan-out area may include a relatively long patterned portion. This relatively increases the width of the fan-out area (i.e., the distance between the pad area and the display area), allowing for a wider unused space. Furthermore, in conventional display devices where each signal pad extends diagonally to reduce unused space, poor contact between the signal pad and the signal terminal may occur. That is, when a signal pad extending diagonally and a signal terminal extending diagonally are electrically connected, mismatched signal pads and signal terminals may come into contact with each other, resulting in poor contact. In particular, poor contact between signal pads and signal terminals is more likely to occur in large display devices that include multiple pad areas and multiple flexible circuit films.

[0099] The display device 10 according to an exemplary embodiment of the present invention may include signal pads 120 whose length gradually increases from the center of the pad region PA to the periphery. Therefore, deviations in the straight-line distance between the first end 154a and the second end 154b of the kth fan-out line 154 disposed in the center of the fan-out region FAN and the straight-line distance between the first end 156a and the second end 156b of the nth fan-out line 156 disposed in the periphery of the fan-out region FAN can be prevented or reduced. Therefore, the display device 10 can remove the pattern portion included in the fan-out line 150 or reduce the length of the pattern portion. This allows for a relative reduction in the width of the fan-out region FAN and the unused space in the first direction DR1. Furthermore, the display device 10 according to an exemplary embodiment of the present invention may include a plurality of signal pads 120 spaced apart from each other in a direction perpendicular to the length direction and a plurality of signal terminals 220 overlapping the signal pads 120. Therefore, when multiple pad regions PA and multiple flexible circuit films 200 are included, poor contact between the multiple signal pads 120 and the multiple signal terminals 220 can also be prevented or reduced.

[0100] Figure 7 It is shown that it includes Figure 4 A plan view of an example of the power pad 130 in the display panel 100.

[0101] Reference Figure 7In one embodiment, the pad portion configured in the pad area PA on the display panel 110 may further include at least one power pad 130. For example, the power pad 130 may include a first power pad 131 and / or a second power pad 132. The first power pad 131 may be electrically connected to a high power supply voltage (ELVDD) line, and the second power pad 132 may be electrically connected to a low power supply voltage (ELVSS) line.

[0102] For example, the high power supply voltage (ELVDD) can be higher than the low power supply voltage (ELVSS). The high power supply voltage (ELVDD) can be a high power consumption voltage, and the low power supply voltage (ELVSS) can be a low power consumption voltage.

[0103] In one embodiment, the power pad 130 may be configured at the periphery of the pad region PA. That is, the power pad 130 may be configured outside the signal pad 120. In other words, as Figure 7 As shown, the power pad 130 configured on the first side PA1 of the pad region PA can be spaced apart from the first signal pad 122 in a direction opposite to the second direction DR2. The power pad 130 configured on the second side PA2 of the pad region PA can be spaced apart from the nth signal pad 126 in a direction opposite to the second direction DR2.

[0104] In one embodiment, the power pad 130 may extend in a first direction DR1. That is, the power pad 130 may extend parallel to each signal pad 120.

[0105] In one embodiment, the length L2 of the power pad 130 in the first direction DR1 can be substantially the same as the length L2 of the adjacent signal pad 120 in the first direction DR1. That is, the length L2 of the power pad 130 disposed on the first side PA1 of the pad region PA can be substantially the same as the length L2 of the first signal pad 122 in the first direction DR1. The length L2 of the power pad 130 disposed on the second side PA2 of the pad region PA can be substantially the same as the length L2 of the nth signal pad 126 in the first direction DR1.

[0106] In one embodiment, the width of the power pad 130 in the second direction DR2 can be substantially the same as the width of the adjacent signal pad 120 in the second direction DR2. That is, the width W2 of the power pad 130 disposed on the first side PA1 of the pad region PA can be substantially the same as the width W2 of the first signal pad 122 in the second direction DR2. The width W2 of the power pad 130 disposed on the second side PA2 of the pad region PA can be substantially the same as the width W2 of the nth signal pad 126 in the second direction DR2.

[0107] In one embodiment, the spacing on the second direction DR2 between the power pad 130 and the adjacent signal pad 120 can be substantially the same as the spacing D1 between the signal pads 120 along the second direction DR2.

[0108] Figure 8 It is a magnified view including the following. Figure 2 A plan view of an example of region A of the flexible circuit film 200 in a display device. Figure 9 It is shown that it includes Figure 2 A plan view of an example of the signal terminal 220 in the display device 10.

[0109] Reference Figure 8 as well as Figure 9 The signal terminals 220, which are electrically connected to the driver integrated circuit 240, can be configured below the base film 210 to overlap with each of the plurality of signal pads 120. That is, the signal terminals 220 can be located on the pad area PA. Each signal terminal 220 can be electrically connected to each of the plurality of signal pads 120.

[0110] Signal terminal 220 can be connected to reference Figure 4 as well as Figure 5 The signal pads 120 described are substantially the same or similar. For example, each signal terminal 220 may include a first signal terminal 222 to an nth signal terminal 226 extending in a first direction DR1 and spaced apart from each other in a second direction DR2 at substantially the same spacing D1. Each of the first signal terminals 222 to the nth signal terminal 226 may be electrically connected to each of the first signal pads 122 to the nth signal pads 126.

[0111] In one embodiment, the k-th signal terminal 224 of the first signal terminals 222 to the n-th signal terminals 226 may be disposed in the central portion PAC of the pad region PA. For example, the lengths of the k-th signal terminals 224 to the n-th signal terminals 226 in a first direction DR1 may gradually increase, while the widths of the k-th signal terminals 224 to the n-th signal terminals 226 in a second direction DR2 may gradually decrease. For example, on the base film 210, the areas of the plurality of signal terminals 220 may be substantially the same. That is, on a plane (e.g., below the base film 210), the areas of the plurality of signal terminals 220 may be substantially the same.

[0112] In one embodiment, each signal terminal 220 may include a first end 220a adjacent to one side of the display area DA and a second end 220b opposite to the first end 220a. That is, the second end 220b may be adjacent to the driver integrated circuit 240. In one embodiment, the first signal terminal 222 has a first end 222a and a second end 222b, the kth signal terminal 224 has a first end 224a and a second end 224b, and the nth signal terminal 226 has a first end 226a and a second end 226b.

[0113] In one embodiment, as the central portion PAC of the pad region PA moves away from the pad region PA, the distance in the first direction DR1 between one side of the display area DA adjacent to the pad region PA and the first end 220a of each signal terminal 220 can gradually decrease. In other words, as the central portion PAC of the pad region PA moves away from the pad region PA, the distance in the first direction DR1 between one side of the driver integrated circuit 240 adjacent to the terminal portion and the first end 220a of each signal terminal 220 can gradually increase.

[0114] In one embodiment, the distances along the first direction DR1 between one side of the display area DA and the second ends 220b of the plurality of signal terminals 220 can be substantially the same. In other words, the distances along the first direction DR1 between one side of the driving integrated circuit 240 and the second ends 220b of the plurality of signal terminals 220 can be substantially the same.

[0115] As described above, the invention has been illustrated with reference to exemplary embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the invention without departing from the concept and scope of the invention as set forth in the following claims.

[0116] (Industry availability)

[0117] This invention is applicable to various display devices. For example, it is applicable to display devices for vehicles, ships, and aircraft, as well as portable communication devices, display or information transmission devices, medical display devices, and other similar display equipment.

Claims

1. A display panel, characterized in that, include: The display panel includes a display area and a pad area spaced apart from one side of the display area in a first direction; as well as The first signal pad to the nth signal pad are disposed on the pad area of ​​the display panel, extending in the first direction and spaced apart from each other along a second direction perpendicular to the first direction, wherein n is an integer greater than or equal to 2. The k-th signal pad among the first signal pad to the n-th signal pad is configured between the first signal pad and the n-th signal pad, where k is an integer between 1 and n. The lengths of the first signal pads to the nth signal pads, from the kth signal pad to the nth signal pad, gradually increase in the first direction, while the widths of the kth signal pads to the nth signal pads gradually decrease in the second direction. The display panel also includes: The fan-out area is located between one side of the display area and the pad area. The display panel also includes: The first signal lines to the nth signal lines are disposed on the display area of ​​the display panel; and The first fan-out line to the nth fan-out line are configured in the fan-out area of ​​the display panel, and each of the first signal pads to the nth signal pads is connected to each of the first signal lines to the nth signal lines. The kth fan-out line from the first fan-out line to the nth fan-out line connects the kth signal pad and the kth signal line from the first signal line to the nth signal line. The lengths of the first fan-out line to the nth fan-out line are the same.

2. The display panel according to claim 1, characterized in that, The first signal pad to the nth signal pad are spaced apart from each other at the same distance along the second direction.

3. The display panel according to claim 1, characterized in that, On a plane, the areas of the first signal pad to the nth signal pad are the same.

4. The display panel according to claim 1, characterized in that, Each of the first signal pads to the nth signal pad includes: The first end is adjacent to one side of the display area; and The second end is opposite to the first end.

5. The display panel according to claim 4, characterized in that, Define a first virtual line connecting the first end of the first signal pad to the (k-1)th signal pad among the first signal pads to the nth signal pad, and a second virtual line connecting the first end of the kth signal pad to the nth signal pad. The first virtual line and the second virtual line each extend relative to the second oblique direction, and the first virtual line and the second virtual line are symmetrical to each other.

6. The display panel according to claim 4, characterized in that, Define a third virtual line connecting the second end of the first signal pad to the nth signal pad. The third virtual line is parallel to the second direction.

7. The display panel according to claim 4, characterized in that, The distance in the first direction between one side of the display area and the first end of the k-th signal pad to the n-th signal pad gradually decreases. The distances in the first direction between one side of the display area and the second end of the k-th signal pad to the n-th signal pad are the same.

8. The display panel according to claim 1, characterized in that, The k-th signal pad, the k-th fan-out line, and the k-th signal line each extend in the first direction.

9. The display panel according to claim 1, characterized in that, The nth signal pad and the nth signal line each extend in the first direction. The nth fan-out line extends diagonally relative to the first direction.

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