Display assembly, display device

Abstract

The application provides a display assembly and a display device, and belongs to the technical field of display driving, and can at least partially solve the problem of uneven driving signals in the existing foldable display device. The display assembly comprises a display substrate and a plurality of driving units, wherein the display substrate comprises a display area, an introduction area surrounding the display area, and a binding area located on one side of the display area in a first direction and farther away from the display area than the introduction area on the side; the introduction area is provided with an introduction line for providing driving signals for the display area; the driving units are bound to the binding area; the display substrate has a flexible bending part penetrating in the first direction; the plurality of driving units are arranged in a second direction intersecting the first direction and are respectively located on both sides of the bending part in the second direction; each driving unit comprises a plurality of output ends arranged in the second direction; each introduction line is connected to at least one output end, and at least part of the introduction lines are connected to a plurality of output ends of different driving units.

Description

Technical Field

[0001] This invention belongs to the field of display driving technology, and specifically relates to a display component and a display device. Background Technology

[0002] The pixel units of the display substrate require some driving signals, which can be provided by a chip-on-film (COF) bonded to the middle of one side of the display substrate.

[0003] In foldable display devices, the display substrate has a flexible bend, which is usually located in the middle of the display substrate. Because the bend may deform, it is impossible to deposit a flip-chip film, which means that the drive signal cannot be introduced from the middle of the display substrate. This causes uneven drive signals to be received by display units at different positions on the display substrate, affecting the uniformity of the display effect.

[0004] In particular, large-size display devices are not suitable for introducing drive signals on two opposite sides (such as the left and right sides) (because it is easy to cause problems such as excessive current and heat generation), so the problem of uneven drive signals is even more serious. Summary of the Invention

[0005] The present invention provides a display component and a display device that can at least partially solve the problem of uneven driving signals in existing foldable display devices.

[0006] In a first aspect, embodiments of the present invention provide a display component, including a display substrate and a plurality of driving units, wherein...

[0007] The display substrate includes a display area, an introduction area surrounding the display area, and a bonding area located on one side of the display area in a first direction and further away from the display area than the introduction area on that side; the introduction area is provided with an introduction line for providing a drive signal to the display area; the drive unit is bonded to the bonding area;

[0008] The display substrate has a flexible bend that extends through a first direction; a plurality of driving units are arranged along a second direction that intersects the first direction and are respectively located on both sides of the bend in the second direction.

[0009] Each of the drive units includes a plurality of output terminals arranged along the second direction; each lead-in line connects to at least one output terminal, and at least a portion of the lead-in lines connect to a plurality of output terminals of different drive units.

[0010] Optionally, the lead-in line includes a positive lead-in line for providing a positive drive signal to the display area; the positive lead-in line is located between the display area and the bonding area and extends along the second direction;

[0011] The output terminal includes a positive output terminal connected to the positive lead wire; each drive unit includes two positive output terminals.

[0012] Optionally, the lead-in line further includes a negative lead-in line for providing a negative drive signal to the display area;

[0013] The output terminal also includes a negative output terminal connected to the negative lead wire; each drive unit includes at least two negative output terminals.

[0014] Optionally, the negative electrode lead-in line includes a first negative electrode lead-in line located between the display area and the bonding area and extending along the second direction; any two adjacent driving units in the second direction correspond to one first negative electrode lead-in line;

[0015] The negative output terminal includes a first negative output terminal connected to a first negative lead-in line; each of the two ends of the first negative lead-in line is respectively connected to a first negative output terminal of its two corresponding driving units; and in the second direction, each of the two first negative output terminals connected to a first negative lead-in line is closer to the other first negative output terminal than any positive output terminal on the driving unit to which it is located.

[0016] Optionally, the negative electrode lead-in line includes a second negative electrode lead-in line located between the display area and the bonding area and extending along the second direction; each driving unit corresponds to one second negative electrode lead-in line;

[0017] The negative output terminal includes a second negative output terminal connected to the second negative lead-in line; each drive unit includes at least one first output terminal located in the second direction between its two positive output terminals; each second negative lead-in line connects to all the second negative output terminals of its corresponding drive unit.

[0018] Optionally, in addition to the two drive units located at both ends in the second direction, each other drive unit includes two second negative output terminals, which are respectively connected to the two ends of a second negative lead-in line;

[0019] The two drive units located at both ends in the second direction each include a second negative output terminal, which is connected to one end of a second negative lead wire near the bend.

[0020] Optionally, the negative lead-in line includes a third negative lead-in line; the third negative lead-in line surrounds the display area on the sides other than the side where the bonding area is located;

[0021] The negative output terminal includes a third negative output terminal connected to the third negative lead-in line; each of the two drive units located at both ends in the second direction includes a third negative output terminal, and the two third negative output terminals are respectively connected to the two ends of the third negative lead-in line; in the second direction, each of the third negative output terminals is further away from the bend than any positive output terminal of the drive unit to which it belongs.

[0022] Optionally, the lead-in line further includes an initialization lead-in line for providing an initialization drive signal to the display area; the initialization lead-in line is located between the display area and the binding area and extends along the second direction;

[0023] The output terminal also includes an initialization output terminal connected to the initialization lead-in line; each positive output terminal corresponds to two initialization output terminals; in each driving unit, in the second direction, the two initialization output terminals corresponding to each positive output terminal are respectively located on both sides of the positive output terminal, and there is no negative output terminal between the positive output terminal and its corresponding initialization output terminal.

[0024] Optionally, the initialization lead line is closer to the display area than the positive lead line.

[0025] Optionally, any negative lead-in line located in the lead-in area between the display area and the bonding area is further away from the display area than the positive lead-in line.

[0026] Optionally, the bonding area has a plurality of pads arranged sequentially in a second direction; the pads are connected to the output terminal; at least a portion of the pads are connected to the lead-in line via a connecting line extending along the first direction, so that the lead-in line is connected to the output terminal.

[0027] Optionally, at least some of the output terminals are redundant output terminals without connected lead wires.

[0028] Optionally, the drive unit includes at least one of the following:

[0029] Chip-on-chip film;

[0030] Driver chip;

[0031] A circuit board assembly, the circuit board assembly including a circuit board and a driver chip connected to the circuit board.

[0032] Optionally, in the second direction, the bent portion is located in the middle of the display substrate;

[0033] The number of drive units located on both sides of the bend in the second direction is equal, and they are arranged symmetrically relative to the bend.

[0034] Secondly, embodiments of the present invention also provide a display device, which includes any of the display components described above. Attached Figure Description

[0035] Figure 1 This is a schematic diagram showing the distribution of various structures in a display component according to an embodiment of the present invention;

[0036] Figure 2 This is a side view of a display substrate of a display component according to an embodiment of the present invention when it is bent.

[0037] Figure 3 This is a circuit diagram of a pixel circuit in a pixel unit of a display substrate of a display component according to an embodiment of the present invention.

[0038] Figure 4 This is a top view of a display component according to an embodiment of the present invention;

[0039] Figure 5 Embodiments of the present invention Figure 4 A magnified top view of the structure within the dashed box A in the display component;

[0040] Figure 6 This is a block diagram of a display device according to an embodiment of the present invention;

[0041] The attached figures are labeled as follows:

[0042] 2. Driving unit; 3. Output terminal; 31. Positive output terminal; 321. First negative output terminal; 322. Second negative output terminal; 323. Third negative output terminal; 33. Initialization output terminal; 34. GOA output terminal; 39. Redundancy output terminal; 4. Lead-in line; 41. Positive lead-in line; 421. First negative lead-in line; 422. Second negative lead-in line; 423. Third negative lead-in line; 43. Initialization lead-in line; 51. Pad; 52. Connecting line; 9. Display substrate; 91. Display area; 92. Lead-in area; 93. Bonding area; 99. Bending part; T1. First transistor; T2. Second transistor; T3. Third transistor; T4. Fourth transistor; T5. Fifth transistor; T6. Sixth transistor; T7. Seventh transistor; Cst. Storage capacitor; D. Light-emitting device. Detailed Implementation

[0043] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] It is understood that the specific embodiments and accompanying drawings described herein are merely for explaining the invention and are not intended to limit the invention.

[0045] It is understood that, without conflict, the various embodiments of the present invention and the features thereof can be combined with each other.

[0046] It is understood that, for ease of description, the accompanying drawings of this invention only show the parts related to the embodiments of this invention, while the parts unrelated to the embodiments of this invention are not shown in the drawings.

[0047] Glossary

[0048] In the embodiments of the present invention, unless otherwise specified, the following technical terms should be understood in accordance with the following interpretations:

[0049] "The lead extends in a certain direction" only means that the overall direction of the lead is that direction, that is, the line connecting the two ends of the lead is parallel or approximately parallel to that direction, but does not mean that any position of the lead is strictly parallel to that direction.

[0050] Multiple structures "set in the same layer" means that multiple structures are formed from the same material layer. Therefore, they are in the same layer in terms of stacking relationship, but this does not mean that they are equidistant from the substrate, nor does it mean that they are completely identical to other layers of the substrate.

[0051] Specific implementation methods

[0052] Firstly, referring to Figures 1 to 5 This invention provides a display component, including a display substrate 9 and a plurality of driving units 2.

[0053] Reference Figure 1 The display component of this embodiment includes a display substrate 9 for display and a plurality of driving units 2 bonded to the display substrate 9. The driving units 2 are used to provide driving signals to the display substrate 9 to realize the display.

[0054] In the display assembly of this embodiment, the display substrate 9 includes a display area 91, an introduction area 92 surrounding the display area 91, and a bonding area 93 located on one side of the display area 91 in a first direction 981 and further away from the display area 91 than the introduction area 92 on that side; the introduction area 92 is provided with an introduction line 4 for providing a driving signal to the display area 91; the driving unit 2 is bonded to the bonding area 93; the display substrate 9 has a flexible bending portion 99 extending along the first direction 981; a plurality of driving units 2 are arranged along a second direction 982 intersecting the first direction 981, and are respectively located on both sides of the bending portion 99 in the second direction 982; each driving unit 2 includes a plurality of output terminals 3 arranged along the second direction 982; each introduction line 4 is connected to at least one output terminal 3, and at least some of the introduction lines 4 are connected to a plurality of output terminals 3 of different driving units 2.

[0055] Reference Figure 1The display substrate 9 is a plate-shaped structure, which may include a substrate and various structures disposed on the substrate. In this embodiment of the invention, the display substrate 9 includes a display area 91 for display, and the display area 91 is provided with a plurality of pixel units. Each pixel unit is a smallest unit that can independently emit light to display the required content, such as a "sub-pixel".

[0056] Each pixel unit contains pixel circuitry for emitting light, for example, a reference. Figure 3 The pixel circuit includes a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, a fifth transistor T5, a sixth transistor T6, a seventh transistor T7, and a storage capacitor Cst. These devices can drive light-emitting devices such as organic light-emitting diodes (OLEDs) to emit light. Because this pixel circuit has seven transistors and one capacitor, it is called a 7T1C pixel circuit.

[0057] The pixel circuit (pixel unit) requires multiple driving signals to function. These driving signals may include a positive driving signal used to power the positive electrode (anode) of the organic light-emitting diode (OLED). Figure 3 VDD in the text refers to the negative drive signal used to power the negative electrode (cathode) of the organic light-emitting diode (OLED). Figure 3 VSS in the image (VSS) is the initialization drive signal used to start the pixel circuit. Figure 3 The Viinit signal in the image is used to control the brightness of the light-emitting device D. Figure 3 Data in the middle), gate drive signal used to control the writing of data drive signals ( Figure 3 The Gate in the diagram represents the switch drive signal used to control whether the light-emitting device D emits light. Figure 3 The EM in the image, and the reset drive signal used to start the emission process of a new frame ( Figure 3 The Reset and Reset' in the middle.

[0058] Of course, the specific forms of pixel circuits and driving signals are not limited to these, but various forms of pixel circuits may require the above positive driving signal (VDD), negative driving signal (VSS), and initialization driving signal (Vinit), which will not be described in detail here.

[0059] Reference Figure 1 The display area 91 is surrounded by an introduction area 92 (or edge area, peripheral area, etc.). The introduction area 92 is used to set edge circuits (such as gate drive circuits), leads, etc., and can correspond to the bezel in the display device. In this embodiment of the invention, the introduction area 92 is provided with at least an introduction line 4. The introduction line 4 is used to introduce the above driving signals into the display area 91 and finally into the corresponding position of each pixel circuit.

[0060] The way the lead-in line 4 introduces the driving signal into the display area 91 is varied. For example, the display area 91 may have signal lines (such as grid-like signal lines) connected to each pixel unit, and the signal lines are connected to the lead-in line 4 in the lead-in area 92, thereby introducing the driving signal into the display area 91; or, the partial structure of each pixel circuit in the display area 91 may be a sheet structure integrated into one piece (such as the negative electrodes of each organic light-emitting diode can be connected into one piece), and this sheet structure is then connected to the lead-in line 4 in the lead-in area 92.

[0061] Obviously, the lead-in line 4 cannot be an ideal conductor and must have a certain resistance. Therefore, the signal will be attenuated (such as IR drop) in it. That is, the driving signal may be different at different distances from the actual signal source (such as the output terminal 3, which will be described similarly later) in the lead-in line 4. As a result, the driving signal introduced into the display area 91 from different positions of the lead-in line 4 will also be different. This difference will cause the display effect of different positions (different pixel units) of the display area 91 to be different, that is, affect the uniformity of the display.

[0062] Reference Figure 1 The display area 91 is provided with a binding area 93 on one side along the first direction 981 (e.g., "vertical"), which is located outside the introduction area 92 on that side. Multiple drive units 2 are bound to the binding area 93 and are arranged sequentially along the second direction 982, that is, different drive units 2 are connected at different positions along the second direction 982.

[0063] Meanwhile, each drive unit 2 has multiple output terminals 3 arranged sequentially along the second direction 982, so that all the output terminals 3 are also arranged sequentially at different positions in the second direction 982.

[0064] The output terminal 3 is connected to the lead-in line 4 and provides the drive signal to the lead-in line 4 (i.e., for the display panel 9, the output terminal 3 is the actual signal source). Moreover, at least some of the lead-in lines 4 are simultaneously connected to the output terminals 3 of multiple different drive units 2. In other words, the output terminals 3 corresponding to these lead-in lines 4 can be located at multiple positions that differ significantly in the second direction 982, so these lead-in lines 4 also obtain drive signals from multiple positions that differ significantly in the second direction 982.

[0065] Wherein, the second direction 982 is the direction that intersects with the first direction 981, that is, the second direction 982 cannot be parallel to the first direction 981.

[0066] For example, refer to Figure 1 , Figure 4 The second direction 982 can be perpendicular to the first direction 981, that is, the second direction 982 is "horizontal".

[0067] Reference Figure 1 The display substrate 9 also has a bent portion 99 that extends through the display substrate 99 along a first direction 981 (i.e., the bent portion 99 passes through the display area 91, the introduction area 92, and the bonding area 93 along the first direction 981). The bent portion 99 has a flexible structure, thereby referring to... Figure 2 By deforming the bending portion 99, the relative angle between the portions of the display substrate 9 (display device) located on both sides of the bending portion 99 can be changed, thereby realizing the "bending" of the display device, and the arrangement includes complete "alignment". That is, the display assembly of the present invention is used in a foldable display device.

[0068] Since the bending portion 99 may deform, the above-mentioned drive unit is not installed at its location. Instead, multiple drive units 2 are located on both sides of the bending portion 99. That is, the multiple drive units 2 are relatively evenly distributed along the second direction 982. Naturally, the various output terminals 3 are also evenly distributed along the second direction 982.

[0069] In this embodiment of the invention, there are multiple driving units 2 located on both sides of the bend 99 of the display substrate 9 in the second direction 982. Therefore, the output terminals 3 of each driving unit 2 are uniformly distributed along the second direction 982. Moreover, at least some of the lead-in lines 4 are connected to the output terminals 3 of multiple different driving units 2. That is to say, these lead-in lines 4 can obtain driving signals from multiple positions with large differences in the second direction 982. As a result, the driving signals at each position of the lead-in lines 4 are relatively uniform, and the driving signals can be input to the display area 91 of the display substrate 9 in a relatively uniform manner, so that each position of the display area 91 can obtain a relatively uniform driving signal. Thus, the display effect at each position of the display area 91 is uniform, which can improve the display uniformity of the foldable display device.

[0070] In particular, when the size of the display substrate 9 increases, more driving units 2 can be set accordingly, so that the uniformity of the display effect can be guaranteed for large-sized foldable display devices, and other problems such as excessive current and heat generation will not be caused.

[0071] Optionally, in the second direction 982, the bending portion 99 is located in the middle of the display substrate 9; the number of driving units 2 located on both sides of the bending portion 99 in the second direction 982 is equal, and they are symmetrically arranged relative to the bending portion 99.

[0072] In one embodiment of the present invention, the bending portion 99 may be located in the middle of the display substrate 9, and the number of driving units 2 on both sides of the bending portion 99 is equal and symmetrically arranged. That is, the display assembly as a whole is symmetrically distributed relative to the bending portion 99. Figure 1 , Figure 4(The middle part is symmetrical on both sides), which on the one hand helps to further improve the uniformity of the driving signal, and on the other hand can also realize the complete "folding" of the display device.

[0073] Optionally, the driving unit 2 includes at least one of the following: a flip-chip film; a driving chip; and a circuit board assembly, the circuit board assembly including a circuit board and a driving chip connected to the circuit board.

[0074] In this embodiment of the invention, the driving unit 2 may be a flexible chip-on-film (COF), a driving chip (IC) directly bonded to the display substrate 9, or a circuit board (including a flexible circuit board) bonded to the display substrate 9 and a driving chip disposed on the circuit board, etc.

[0075] Of course, the specific form of the driving unit 2 is not limited to this, as long as it can be bonded and connected to the display substrate 9 and has multiple output terminals 3 that can provide driving signals.

[0076] Optionally, the bonding area 93 is provided with a plurality of pads 51 arranged sequentially in the second direction 982; the pads 51 are connected to the output terminal 3; at least a portion of the pads 51 are connected to the lead-in line 4 via a connecting line 52 extending along the first direction 981, so that the lead-in line 4 is connected to the output terminal 3.

[0077] As one embodiment of the present invention, the display substrate 9 may have a plurality of pads 51 arranged along the second direction 982 in the bonding area 93. These pads 51 are connected to the corresponding lead-in lines 4 by connecting lines 52 extending along the first direction 981 (e.g., upward). The output terminal 3 of the driving unit 2 may be connected to the pads 51 (e.g., by anisotropic photoresist).

[0078] Therefore, the signal from the output terminal 3 of the drive unit 2 can sequentially enter the pad 51, the connecting line 52, and the lead-in line 4; that is, the lead-in line 4 is connected to the output terminal 3 through the connecting line 52 and the pad 51.

[0079] It should be understood that the output terminal 3 of the driving unit 2 refers to the structure that can be connected to the pad 51, such as a connector (Pad) on the surface of the driving unit 2. The connector may also need to be connected to the actual signal-providing port of the driving chip through leads (such as leads on the flip-chip film), such as connecting to the pin of the driving chip.

[0080] It should be understood that, based on the limitations of the output capability and maximum current of a single port, multiple pins of the driver chip can output the same signal. These multiple pins are connected to multiple connectors, which in turn are connected to multiple pads 51. These multiple pads 51 are then connected to a connecting line 52 (such as a relatively thick connecting line 52), which is connected to a location of the lead-in line 4. Therefore, the above multiple connectors should be regarded as "one" output terminal 3 on the driver unit 2.

[0081] Optionally, the lead-in line 4 includes a positive lead-in line 41 for providing a positive drive signal to the display area 91; the positive lead-in line 41 is located between the display area 91 and the bonding area 93 and extends along the second direction 982; the output terminal 3 includes a positive output terminal 31 connected to the positive lead-in line 41; each drive unit 2 includes two positive output terminals 31.

[0082] Reference Figure 4 In this embodiment of the invention, the lead-in line 4 may include a positive lead-in line 41 for providing the above-mentioned positive drive signal (VDD). The positive lead-in line 41 extends along the second direction 982 (lateral) in the lead-in area 92 on the side where the bonding area 93 is located. Each drive unit 2 has two connections (e.g., connected via connecting line 52) to the positive output terminal 31 of the positive lead-in line 41, so that each drive unit 2 can provide a positive drive signal to the positive lead-in line 41 from two positions, ensuring that the signal at each position of the positive lead-in line 41 is uniform, and uniformly providing a positive drive signal to the display area 91.

[0083] Optionally, the lead-in line 4 also includes a negative lead-in line for providing a negative drive signal to the display area 91; the output terminal 3 also includes a negative output terminal connected to the negative lead-in line; each drive unit 2 includes at least two negative output terminals.

[0084] Reference Figure 4 The lead-in line 4 also includes a negative lead-in line for providing the above negative drive signal (VSS), which is connected to the negative output terminal of the drive unit 2.

[0085] Optionally, the negative lead-in line includes a first negative lead-in line 421 located between the display area 91 and the bonding area 93 and extending along the second direction 982; any two adjacent drive units 2 in the second direction 982 correspond to one first negative lead-in line 421; the negative output terminal includes a first negative output terminal 321 connected to the first negative lead-in line 421; both ends of each first negative lead-in line 421 are respectively connected to one of the first negative output terminals 321 of its two corresponding drive units 2; and in the second direction 982, each of the two first negative output terminals 321 connected to a first negative lead-in line 421 is closer to the other first negative output terminal 321 than any positive output terminal 31 on the drive unit 2 to which it is located.

[0086] Reference Figure 4 The aforementioned negative lead-in line may include a first negative lead-in line 421, which also extends along the second direction 982 (laterally) in the lead-in area 92 on the side where the bonding area 93 is located. Each first negative lead-in line 421 is connected (e.g., via connecting line 52) between two adjacent driving units 2, or in other words, "connected in series" between two adjacent driving units 2; and the two first negative output terminals 321 connected to a first negative lead-in line 41 should be located between the two closest positive output terminals 31 of the corresponding two driving units 2. Thus, the first negative lead-in line 421 can provide a negative driving signal to the display area 91 from a position between two adjacent driving units 2, improving display uniformity.

[0087] Optionally, the negative lead-in line includes a second negative lead-in line 422 located between the display area 91 and the bonding area 93 and extending along the second direction 982; each driving unit 2 corresponds to one second negative lead-in line 422; the negative output terminal includes a second negative output terminal 322 connected to the second negative lead-in line 422; each driving unit 2 includes at least one first output terminal 3 located in the second direction 982 between its two positive output terminals 31; each second negative lead-in line 422 connects to all the second negative output terminals 322 of its corresponding driving unit 2.

[0088] Reference Figure 4 The aforementioned negative lead-in line may include a second negative lead-in line 422, which also extends along the second direction 982 (laterally) in the lead-in area 92 on the side where the bonding area 93 is located. Each second negative lead-in line 422 is connected to only one second negative output terminal 322 on a driving unit 2 (e.g., via connecting line 52), and the second negative output terminal 322 on each driving unit 2 is located between its two positive output terminals 31. Thus, the second negative lead-in line 422 can provide a negative drive signal to the display area 91 from the location of each driving unit 2, improving display uniformity.

[0089] Optionally, in addition to the two drive units 2 located at both ends in the second direction 982, each of the other drive units 2 includes two second negative output terminals 322, which are respectively connected to the two ends of a second negative lead-in line 422; each of the two drive units 2 located at both ends in the second direction 982 includes a second negative output terminal 322, which is connected to the end of a second negative lead-in line 422 near the bend 99.

[0090] Furthermore, refer to Figure 4Except for the two drive units 2 located at both ends (such as the left and right ends) on the second direction 982, each other drive unit 2 has two second negative output terminals 322, which are respectively connected to the two ends of the corresponding second negative lead-in line 422.

[0091] For the two drive units 2 located at both ends (such as the left and right ends) in the second direction 982, each has only one second negative output terminal 322, and the second negative output terminal 322 is connected to the end of the corresponding second negative lead-in line 422 near the bend 99 (that is, the second negative output terminal 322 of the drive unit 2 at the left end is connected to the right end of the second negative lead-in line 422, and the second negative output terminal 322 of the drive unit 2 at the right end is connected to the left end of the second negative lead-in line 422).

[0092] Simulation calculations revealed that when the second negative lead-in line 422 is connected to the corresponding second negative output terminal 322 in the above manner, the negative drive signal provided by the second negative lead-in line 422 to the display area 91 can be made the most uniform.

[0093] In the two driving units 2 located at both ends (such as the left and right ends) in the second direction 982, an output terminal 3 may also be provided at the position of the other second negative output terminal 322 of the other driving unit 2. The output terminal 3 can be used to output other driving signals, such as GOA driving signals for the gate driving circuit (GOA) to work, that is, the output terminal 3 can be a GOA output terminal 334, etc.

[0094] Optionally, the negative lead-in line may include a third negative lead-in line 423; the third negative lead-in line 423 surrounds the display area 91 on the side other than the side where the bonding area 93 is located; the negative output terminal includes a third negative output terminal 323 connected to the third negative lead-in line 423; each of the two drive units 2 located at both ends in the second direction 982 includes a third negative output terminal 323, and the two third negative output terminals 323 are respectively connected to the two ends of the third negative lead-in line 423; in the second direction 982, each third negative output terminal 323 is further away from the bend 99 than any positive output terminal 31 of the drive unit 2 to which it is located.

[0095] Reference Figure 4 The above negative lead-in line may include a third negative lead-in line 423, which is not distributed in the lead-in area 92 on the side where the binding area 93 is located, but surrounds the display area 91 in the lead-in area 92 on other sides (e.g., surrounds the display area 91 from the left, top, and right sides), or the third negative lead-in line 423 "semi-encloses" the display area 91.

[0096] In the two drive units 2 located at both ends (e.g., left and right ends) on the second direction 982, the two outermost output terminals 3 are third negative output terminals 323 (i.e., the third negative output terminal 323 is located at the position of a first negative output terminal 321 corresponding to the other drive unit 2). These two third negative output terminals 323 are respectively connected (e.g., connected via connecting line 52) to the two ends of the third negative lead-in line 423. Thus, the third negative lead-in line 423 can provide negative drive signals to the display area 91 from all directions except the side where the bonding area 93 is located, improving display uniformity.

[0097] It should be understood that the display substrate 9 may also have other lead-in lines 4 that "semi-enclose" the display area 91 in the above manner to provide other driving signals. For example, there may also be lead-in lines 4 that are connected to the two ends of the positive lead-in line 41 and the subsequent initialization lead-in line 43 respectively, and "semi-enclose" the display area 91 to make the corresponding driving signals more uniform.

[0098] Optionally, any negative lead wire located in the lead area 92 between the display area 91 and the bonding area 93 is further away from the display area 91 than the positive lead wire 41.

[0099] Reference Figure 4 All of the above negative lead-in lines (first negative lead-in line 421, second negative lead-in line 422, and third negative lead-in line 423) can be further away from the display area 91 (e.g., further down) than the positive lead-in line 41, that is, closer to the bonding area 93. Therefore, the connecting line 52 of the corresponding negative lead-in line does not need to be extended (upward) to the positive lead-in line 41 in the first direction 981.

[0100] Therefore, referring to Figure 4 All negative lead-in lines (first negative lead-in line 421, second negative lead-in line 422, third negative lead-in line 423) and negative output terminals (first negative output terminal 321, second negative output terminal 322, third negative output terminal 323) are located "between" adjacent positive output terminals 31; and the connecting lines 52 corresponding to the negative lead-in lines do not overlap with the positive lead-in lines 41.

[0101] In summary, following the above method, the negative lead-in line (and its corresponding connecting line 52) will not overlap with the positive lead-in line 41 (and its corresponding connecting line 52). Therefore, the negative lead-in line, the positive lead-in line 41, and their connecting lines 52 can all be arranged on the same layer, and will not cause any conduction with the positive drive signal or the negative drive signal, thus avoiding interference and simplifying the product structure.

[0102] Optionally, the lead-in line 4 further includes an initialization lead-in line 43 for providing an initialization drive signal to the display area 91; the initialization lead-in line 43 is located between the display area 91 and the bonding area 93 and extends along the second direction 982; the output terminal 3 further includes an initialization output terminal 33 connected to the initialization lead-in line 43; each positive output terminal 31 corresponds to two initialization output terminals 33; in each drive unit 2, in the second direction 982, the two initialization output terminals 33 corresponding to each positive output terminal 31 are respectively located on both sides of the positive output terminal 31, and there is no negative output terminal between the positive output terminal 31 and its corresponding initialization output terminal 33.

[0103] In this embodiment of the invention, the lead-in line 4 may further include an initialization lead-in line 43 for providing the above initialization drive signal (Vinit); and each of the above positive output terminals 31 corresponds to two initialization output terminals 33, which "sandwich" the positive output terminal 31 in the middle, and there are no other negative output terminals in between.

[0104] Therefore, referring to Figure 4 The above initialization output terminal 33 (and its corresponding connection line 52) is equivalent to "separating" the positive output terminal 31 (and its corresponding connection line 52) from the negative output terminal (and its corresponding connection line 52), and also "separating" the GOA output terminal 34 (and its corresponding connection line 52), thereby "isolating" the positive drive signal and the negative drive signal and avoiding mutual interference between them.

[0105] Optionally, the initialization lead-in line 43 is closer to the display area 91 than the positive lead-in line 41.

[0106] Reference Figure 4 The initialization lead-in line 43 can be closer to the display area 91 (e.g., higher) than the positive lead-in line 41, that is, farther away from the bonding area 93. In other words, the initialization lead-in line 43 is at the innermost side of the display substrate 9, the negative lead-in line is at the outermost side, and the positive lead-in line 41 is in the middle.

[0107] Of course, at this time, the connection line 52 corresponding to the initialization lead-in line 43 will overlap with the positive lead-in line 41 and the negative lead-in line. Therefore, it should be placed on a different layer from the positive lead-in line 41 and separated from it by an insulating layer.

[0108] Optionally, at least some of the output terminals 3 are redundant output terminals 39 that are not connected to the lead-in line 4.

[0109] Reference Figure 5 Some output terminals 3 of the drive unit 2 (and their corresponding connectors) may not actually be connected to the lead-in line 4 (and of course, not to the connecting line 52). That is, these output terminals 3 do not actually output signals and are redundant (dummy) output terminals 39.

[0110] By setting redundant output terminals 39, the load of the drive unit 2 (or drive chip) can be balanced, and the interval between other output terminals 3 (the output terminals 3 of the actual output signals) can be increased, thereby better "isolating" different drive signals and further improving the display effect.

[0111] Of course, in the display component of this embodiment, the driving unit 2 should also provide other driving signals, such as the above-mentioned data driving signal (Data), etc. These driving signals can be provided through the corresponding output terminal 3, connecting line 52, lead-in line 4, etc., or they can be provided in other different ways, which will not be described in detail here.

[0112] Secondly, referring to Figure 6 The present invention also provides a display device, which includes any of the display components described above.

[0113] In this embodiment of the invention, the above display components can be combined with other structures (such as a substrate, power supply components, housing, etc.) to form a display device with complete display functions.

[0114] In this embodiment of the invention, the display substrate of the display device has a bending portion, so the display device is a foldable display device. That is, the display device can be bent at the bending portion, thereby changing the relative angle between the two sides of the bending portion, including bending to a complete fold.

[0115] Specifically, the display device in this embodiment of the invention can be any product or component with display function, such as an organic light-emitting diode (OLED) display panel, electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, navigator, etc., which will not be described in detail here.

[0116] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A display component, comprising a display substrate and a plurality of driving units, characterized in that, The display substrate includes a display area, an introduction area surrounding the display area, and a bonding area located on one side of the display area in a first direction and further away from the display area than the introduction area on that side; the introduction area is provided with an introduction line for providing a drive signal to the display area; the drive unit is bonded to the bonding area; The display substrate has a flexible bend that extends through a first direction; a plurality of driving units are arranged along a second direction that intersects the first direction and are respectively located on both sides of the bend in the second direction. Each of the drive units includes a plurality of output terminals arranged along the second direction; each lead-in line connects to at least one output terminal, and at least a portion of the lead-in line connects to a plurality of output terminals of different drive units; The lead-in line includes a positive lead-in line for providing a positive drive signal to the display area; the positive lead-in line is located between the display area and the bonding area and extends along the second direction; The output terminal includes a positive output terminal connected to the positive lead wire; each drive unit includes two positive output terminals. The lead-in line also includes a negative lead-in line for providing a negative drive signal to the display area; The output terminal also includes a negative output terminal connected to the negative lead wire; each drive unit includes at least two negative output terminals; The negative electrode lead-in line includes a third negative electrode lead-in line; the third negative electrode lead-in line surrounds the display area on all sides except the side where the bonding area is located; The negative output terminal includes a third negative output terminal connected to the third negative lead-in line; each of the two drive units located at both ends in the second direction includes a third negative output terminal, and the two third negative output terminals are respectively connected to the two ends of the third negative lead-in line; in the second direction, each of the third negative output terminals is further away from the bend than any positive output terminal of the drive unit to which it belongs.

2. The display component according to claim 1, characterized in that, The negative electrode lead-in line includes a first negative electrode lead-in line located between the display area and the bonding area and extending along the second direction; any two adjacent driving units in the second direction correspond to one first negative electrode lead-in line; The negative output terminal includes a first negative output terminal connected to a first negative lead-in line; each of the two ends of the first negative lead-in line is respectively connected to a first negative output terminal of its two corresponding driving units; and in the second direction, each of the two first negative output terminals connected to a first negative lead-in line is closer to the other first negative output terminal than any positive output terminal on the driving unit to which it is located.

3. The display component according to claim 1, characterized in that, The negative electrode lead-in line includes a second negative electrode lead-in line located between the display area and the bonding area and extending along the second direction; each driving unit corresponds to one second negative electrode lead-in line; The negative output terminal includes a second negative output terminal connected to the second negative lead-in line; each drive unit includes at least one first output terminal located in the second direction between its two positive output terminals; each second negative lead-in line connects to all the second negative output terminals of its corresponding drive unit.

4. The display component according to claim 3, characterized in that, Except for the two drive units located at both ends in the second direction, each other drive unit includes two second negative output terminals, which are respectively connected to the two ends of a second negative lead-in line; The two drive units located at both ends in the second direction each include a second negative output terminal, which is connected to one end of a second negative lead wire near the bend.

5. The display component according to claim 1, characterized in that, The lead-in line also includes an initialization lead-in line for providing an initialization drive signal to the display area; the initialization lead-in line is located between the display area and the binding area and extends along the second direction; The output terminal also includes an initialization output terminal connected to the initialization lead-in line; each positive output terminal corresponds to two initialization output terminals; in each driving unit, in the second direction, the two initialization output terminals corresponding to each positive output terminal are respectively located on both sides of the positive output terminal, and there is no negative output terminal between the positive output terminal and its corresponding initialization output terminal.

6. The display component according to claim 5, characterized in that, The initialization lead-in line is closer to the display area than the positive lead-in line.

7. The display component according to claim 1, characterized in that, Let any negative lead-in line located in the lead-in area between the display area and the bonding area be further away from the display area than the positive lead-in line.

8. The display component according to claim 1, characterized in that, The bonding area has a plurality of pads arranged sequentially in a second direction; the pads are connected to the output terminal; at least a portion of the pads are connected to the lead-in line via a connecting line extending along the first direction, so that the lead-in line is connected to the output terminal.

9. The display component according to claim 1, characterized in that, At least some of the output terminals are redundant output terminals without connected lead wires.

10. The display component according to claim 1, characterized in that, The drive unit includes at least one of the following: Chip-on-chip film; Driver chip; A circuit board assembly, the circuit board assembly including a circuit board and a driver chip connected to the circuit board.

11. The display component according to claim 1, characterized in that, In the second direction, the bent portion is located in the middle of the display substrate; The number of drive units located on both sides of the bend in the second direction is equal, and they are arranged symmetrically relative to the bend.

12. A display device, characterized in that, include: The display component according to any one of claims 1 to 11.

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