Display device and driving method thereof

Abstract

The present application provides a display device and a driving method thereof. The display device includes a first substrate and a second substrate. The first substrate has a first display unit area including first display units and a second display unit area including second display units. The second display unit area is located at a first side of the first display unit area, and the second display units are different from the first display units. The second substrate is at least partially stacked with the first substrate, and has a third display unit area including third display units. The driving method includes: inputting a first signal from a first signal input side of the first substrate to the first display units; inputting a second signal from the first signal input side to the second display units; and inputting a third signal from a second signal input side of the second substrate to drive the plurality of third display units on the second substrate.

Description

Technical Field

[0001] This invention relates to a display device and its driving method; more specifically, this invention relates to a display device for reducing dark bands around the bezel of a display screen. Background Technology

[0002] With the continuous advancement of display technology, the maturity of various display panels is also increasing. Whether it's liquid crystal display panels, organic light-emitting diode (OLED) display panels, or micro-LED display panels, these technologies have all undergone long-term development. However, in the development of large-size display technology, besides using single large-size panels, employing panel splicing to create large-size display devices is currently one of the mainstream technological trends.

[0003] However, since the display area of ​​individual LCD panels cannot easily cover the entire bezel, the seams between the LCD panels are easily noticeable when users view large-scale display devices composed of spliced ​​panels. Existing technology has attempted to add micro-light-emitting diodes (Micro LEDs) to one side of the substrate edge of the LCD panel, but when placed on the lower substrate, the existing liquid crystal pixel control circuitry often results in excessively high wiring density, affecting wiring design. When placed on the upper substrate, the excessive wiring also easily creates difficulties in circuit design. Summary of the Invention

[0004] Technical means to solve the problem

[0005] To address the aforementioned problems, a display device is provided according to an embodiment of the present invention, comprising a first substrate and a second substrate. The first substrate has a first display unit region comprising a plurality of first display units and a second display unit region comprising a plurality of second display units. The second display unit region is located on a first side of the first display unit region, and the second display units are different from the first display units. The second substrate is at least partially stacked with the first substrate and has a third display unit region comprising a plurality of third display units.

[0006] Another embodiment of the present invention provides a display device driving method, comprising the following steps: inputting a first signal from a first signal input side of a first substrate to at least one first display unit on the first substrate; inputting a second signal from the first signal input side of the first substrate to at least one second display unit on the first substrate, wherein the second display unit is different from the first display unit; and inputting a third signal from a second signal input side of a second substrate that at least partially overlaps with the first substrate to drive a plurality of third display units on the second substrate, wherein the second signal input side corresponds to the first signal input side.

[0007] Compare the technical effects with existing technologies.

[0008] The display devices and driving methods provided according to the various embodiments of the present invention can disperse the wiring and pad density on a single substrate, thereby reducing problems such as poor yield, reduced aperture ratio, or difficulties in circuit signal design caused by excessive wiring. In addition, the technical solutions proposed in some embodiments can also fill the display dark bands or display gaps between adjacent display unit areas in different directions, so as to improve the image integrity and user experience of the spliced ​​display device. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of a display device according to an embodiment of the present invention.

[0010] Figure 2 for Figure 1 A schematic diagram of the first substrate in the embodiment shown.

[0011] Figure 3 for Figure 1 A schematic diagram of the second substrate in the embodiment shown.

[0012] Figure 4 for Figure 1 Top view of the embodiment shown.

[0013] Figure 5 A schematic diagram of an embodiment where multiple display devices are spliced ​​together.

[0014] Figure 6 This is a schematic diagram of an embodiment of the first substrate.

[0015] Figure 7 This is a schematic diagram of an embodiment of the second substrate.

[0016] Figure 8 This is a cross-sectional schematic diagram of an embodiment of the display device.

[0017] Figure 9 This is a schematic diagram of an embodiment of the second display unit area.

[0018] Figure 10 This is a schematic diagram of another embodiment of the second display unit area.

[0019] Figure 11 This is a schematic diagram of another embodiment of the first substrate.

[0020] Figure 12A This is a schematic diagram of another embodiment of the display device.

[0021] Figure 12B This is a schematic diagram of another embodiment of the display device.

[0022] Figure 13 This is a flowchart of an embodiment of a display device driving method.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10 Display devices

[0025] 100 First substrate

[0026] 101 First Side

[0027] 102 Second side

[0028] 110 First display unit area

[0029] 111 First Display Unit

[0030] 120 Second display unit area

[0031] 121 Second Display Unit

[0032] 1211 First End

[0033] 1212 Second End

[0034] 200 Second substrate

[0035] 230 Third Display Unit Area

[0036] 231 Third Display Unit

[0037] 301 First signal input side

[0038] 302 Second signal input side

[0039] 500 sector

[0040] 510 First Transfer Area

[0041] 511 First Adapter Pad

[0042] 513 conductor

[0043] 515 First Conductive Pad

[0044] 520 Second Transfer Area

[0045] 521 Second Adapter Pad

[0046] 523 conductor

[0047] 525 Second Conductive Pad

[0048] 530 Signal Input Area

[0049] 533 conductor

[0050] 550 Gold Sphere Layers

[0051] 601 First Drive Signal Source

[0052] 602 Second drive signal source

[0053] 610 First signal line

[0054] 620 Second signal line

[0055] 630 Third signal line

[0056] 650 gate signal line Detailed Implementation

[0057] Various embodiments will be described below, and those skilled in the art should readily understand the concept and principles of the invention by referring to the description and accompanying drawings. However, while specific embodiments will be described in detail herein, these embodiments are merely illustrative and are not intended to be limiting or exhaustive in any respect. Therefore, various changes and modifications to the invention will be readily apparent and easily implemented by those skilled in the art without departing from the concept and principles of the invention.

[0058] In the accompanying drawings, the thicknesses of layers, films, panels, regions, etc., are enlarged for clarity. Throughout the specification, the same element symbols denote the same elements. It should be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected" to another element, it may be directly on or connected to the other element, or intermediate elements may also be present. Conversely, when an element is referred to as being "directly on" or "directly connected" to another element, no intermediate elements are present. As used herein, "connection" can refer to physical and / or electrical connection. Furthermore, "electrical connection" or "coupling" may mean that other elements exist between the two elements.

[0059] The terminology used herein is for the purpose of describing particular embodiments only and is not restrictive. As used herein, unless the content clearly indicates otherwise, the singular forms “a,” “an,” and “the” are intended to include the plural forms, including “at least one.” “Or” means “and / or.” As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items. It should also be understood that, when used in this specification, the terms “comprising” and / or “including” specify the presence or addition of the stated features, areas, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, areas, integrals, steps, operations, elements, components, and / or combinations thereof.

[0060] This document describes exemplary embodiments with reference to cross-sectional views, which are schematic diagrams of idealized embodiments. Therefore, variations in shape as a result of, for example, manufacturing techniques and / or tolerances, are contemplated. Consequently, the embodiments described herein should not be construed as limited to the specific shapes of the regions shown herein, but rather include, for example, shape deviations caused by manufacturing processes. For example, regions shown or described as flat may generally have rough and / or non-linear characteristics. Furthermore, acute angles shown may be rounded. Therefore, the regions shown in the figures are schematic in nature, and their shapes are not intended to show the precise shapes of the regions, nor are they intended to limit the claims.

[0061] Figure 1 The diagram illustrates an embodiment of a display device. In this embodiment, the display device 10 includes a first substrate 100 and a second substrate 200; the first substrate 100 and the second substrate 200 are at least partially stacked on top of each other. In this embodiment, both the first substrate 100 and the second substrate 200 are made of transparent material. Furthermore, the side of the second substrate 200 opposite to the first substrate 100 is the display surface of the display device. Figure 1 and Figure 2 As shown, the first substrate 100 has a first display unit region 110 and a second display unit region 120, with the second display unit region 120 located on a first side 101 of the first display unit region 110. Specifically, in this embodiment, the first display unit region 110 is located in the central region of the first substrate 100, and the first side 101 where the second display unit region 120 is located is the side opposite to the first signal input side 301 of the first display unit region 110. However, in different embodiments, the first side 101 may also be the side perpendicular to the first signal input side 301. Furthermore, the first display unit region 110 preferably covers the main area of ​​the first substrate 100 except for the area near the edge; while the second display unit region 120 is preferably distributed in a strip shape along the first side 101.

[0062] The components shown in the diagram, such as the display units (first, second, and third) and the signal lines, are exemplary and presented in a simplified manner for ease of understanding. Their quantities may be adjusted according to actual needs and are not limited by the quantities shown in the diagram.

[0063] like Figure 1 and Figure 2As shown, the first display unit area 110 includes a plurality of first display units 111. In this embodiment, the first display unit 111 is a pixel of a liquid crystal display panel, which may include a plurality of sub-pixels. However, in different embodiments, the first display unit 111 may also be an organic light-emitting diode (OLED), a micro light-emitting diode (Micro LED), or other different self-emissive or non-self-emissive display units. The second display unit area 120 includes a plurality of second display units 121 that are different from the first display units 111. In this embodiment, the second display unit 121 is a micro light-emitting diode (Micro LED), which may have different colors, such as red, green, and blue. However, in different embodiments, the second display unit 121 may also be an organic light-emitting diode (OLED) or other different self-emissive or non-self-emissive display units.

[0064] like Figure 1 and Figure 3 As shown, the second substrate 200 has a third display unit region 230. In this embodiment, the third display unit region 230 is arranged in a strip shape and is located on the side of the second substrate 200. Figure 4 As shown, when the first substrate 100 and the second substrate 200 are stacked, the vertical projection range of the third display unit area 230 on the first substrate 100 is at least partially located on the second side 102 of the first display unit area 110, and the vertical projection ranges of the second display unit area 120 and the third display unit area 230 on the first substrate 100 do not overlap. In this embodiment, the two ends of the second side 102 are respectively connected to the opposite first side 101 and the first signal input side 301; however, in different embodiments, the positions of the first side 101 and the second side 102 can also be reversed.

[0065] The third display unit 231 is a micro LED, which can have different colors, such as red, green, and blue. However, in different embodiments, the third display unit 231 can also be an organic light-emitting diode (OLED) or other different self-emissive or non-self-emissive display units. Furthermore, in this embodiment, the second display unit 121 and the third display unit 231 are the same type of light-emitting display unit, but in different embodiments, they can also be different types of display units.

[0066] exist Figure 4 In the illustrated embodiment, when the first substrate 100 and the second substrate 200 are stacked, the vertical projection ranges of the second display unit area 120 and the third display unit area 230 on the first substrate 100 are respectively located on the sides of the first display unit area 110; that is, the second display unit area 120 and the third display unit area 230 are located at the edge of the entire display device. Therefore, when several display devices 10 are connected adjacently, such as Figure 5As shown, the second display unit area 120 and the third display unit area 230 can be located between the first display unit areas 110 of the adjacent display devices 10 in different directions, thereby filling the display dark bands or display gaps between the adjacent display unit areas 110 in different directions, so as to improve the image integrity and user experience of the splicing display device.

[0067] Figure 6 The diagram shown is a schematic representation of an embodiment of the first substrate 100. (As shown...) Figure 6 As shown, the first substrate 100 has a first signal input side 301 and fan-connected areas 500 distributed along the first signal input side 301. The fan-connected areas 500 have a first transition area 510 and a signal input area 530 spaced apart. In this embodiment, the first transition area 510 and the signal input area 530 are respectively formed by a plurality of parallel conductive lines 513 / 533, and both conductive lines have a pad at one end near the edge of the first substrate 100. The conductive lines 513 in the first transition area 510 each have a first transition pad 511 at the end opposite to the edge of the first substrate 100. Figure 6 As shown, the first adapter pad 511 is located between the first display unit area 110 and the first signal input side 301, that is, it does not enter the display effective area formed by the first display unit area 110. In the signal input area 530, the end of the conductor 533 opposite to the first signal input side 301 extends into the interior of the first substrate 100, thereby forming a first signal line 610 and a second signal line 620, which are electrically connected to each of the first display units 111 and each of the second display units 121, respectively, to control or drive each of the first display units 111 and each of the second display units 121. The pads, adapter pads, conductive pads, or similar terms used herein can be formed directly from the end of a conductor; however, in different embodiments, they can also be formed from other externally connected pads, solder pads, or other conductive elements.

[0068] exist Figure 6 In the illustrated embodiment, a plurality of gate signal lines 650 are arranged on the first substrate 100, each corresponding to a different column of first display units 111. These gate signal lines 650 are arranged side by side and extend along a direction that cuts through the first signal line 610 (e.g., parallel to the first signal input side 301). These gate signal lines 650 are located on different metal layers from the first signal line 610, but each gate signal line 650 is electrically connected to a first signal line 610, for example, via a via. With this arrangement, the signal transmitted by each signal line 610 can be transmitted to each of the first display units 111 in the corresponding column via the corresponding gate signal line 650.

[0069] like Figure 6As shown, the display device includes a first driving signal source 601 and a second driving signal source 602. The first driving signal source 601 and the second driving signal source 602 are electrically connected to the signal input area 530 and the first transition area 510, respectively, for example, to the pads of wires 513 / 533. The first driving signal source 601 provides driving signals to the first display unit 111 and the second display unit 121, while the second driving signal source 602 provides driving signals to the third display unit 231. For example, the first driving signal source 601 can provide a gate signal, transmitted to the first display unit 111 on the corresponding column via the first signal line 610 and the gate signal line 650; the first driving signal source 601 can also simultaneously provide a driving signal, transmitted to the corresponding second display unit 121 via the second signal line 620, to control the lighting of the second display unit 121. Furthermore, in this embodiment, the first driving signal source 601 and the second driving signal source 602 are made of chip on film (COF) elements, but are not limited to this. For example, they can also be made of chip on glass (COG) or other methods.

[0070] Figure 7 The diagram shown is a schematic representation of an embodiment of the second substrate 200. (As shown...) Figure 7 As shown, the second substrate 200 has a second signal input side 302 corresponding to the first signal input side 301 and at least a second transition region 520 distributed along the second signal input side 302. The correspondence between the first signal input side 301 and the second signal input side 302 includes, but is not limited to, the first signal input side 301 and the second signal input side 302 being located on the same side of the display device, or both being located at the relative positions of the first substrate 100 and the second substrate 200 when they are stacked. In this embodiment, the second transition region 520 is formed by a plurality of parallel wires 523, and the wires 533 have a second transition pad 521 at one end near the edge of the second substrate 200. The other end of the wires 523 extends into the interior of the second substrate 200 to form a third signal line 630, which is electrically connected to each of the third display units 231 to control or drive the third display units 231.

[0071] exist Figure 7In the illustrated embodiment, the second side 102 where the third display unit area 230 is located is perpendicular to the second signal input side 302. Therefore, the third signal line 630 extends from the second signal input side 302 and then bends (e.g., at 90 degrees) before extending towards the third display unit area 230. The third signal line 630 can be located entirely within the same metal layer without changing layers. However, in different embodiments, the third signal line 630 can also be configured by changing layers, for example, by setting the vertical and horizontal lines in different layers and connecting them with vias. In different embodiments, when the second side 102 is located on the opposite side of the second signal input side 302, the third signal line 630 can also be configured in different ways, for example, without bending. Furthermore, when the first substrate 100 and the second substrate 200 are stacked, the projection range of the third signal line 630 on the first substrate 100 can be located at or near the boundary of the first display unit 111, or between adjacent first display units 111, to reduce the impact on the overall aperture ratio of the display device.

[0072] Figure 8 The image shown is a cross-sectional view of an embodiment in which the first substrate 100 and the second substrate 200 are stacked. Figure 8 As shown, the first transition region 510 and the second transition region 520 are opposite to each other, and the first transition pad 511 and the second transition pad 521 are electrically connected to each other to enable signal transmission between the boards. Specifically, in this embodiment, a gold ball layer 550 is disposed between the first transition region 510 and the second transition region 520, and a first conductive pad 515 is disposed on the first transition pad 511, and a second conductive pad 525 is disposed on the second transition pad 521. The first conductive pad 515 and the second conductive pad 525 are respectively connected to the upper and lower ends of the gold ball layer 550 to form a conductivity between the first transition pad 511 and the second transition pad 521. The first conductive pad 515 and the second conductive pad 525 are preferably formed of indium tin oxide (ITO). Furthermore, as... Figure 6 As shown, the gold ball layer 550 can be formed in a strip distribution and extends along the first signal input side 301, and can span the spaced-apart first transition area 510 and signal input area 530. As mentioned above, the first transition pad 511 and the second transition pad 521 can be directly formed from the ends of the wires 513 and 523, rather than being external pads. However, in different embodiments, the first transition pad 511 and the second transition pad 521 can be external pads added to the ends of the wires 513 and 523.

[0073] Figure 9The diagram illustrates one embodiment of the second display unit area 120. In this embodiment, each second signal line 620 is electrically connected to the first terminal 1211 of three second display units 121. In this embodiment, the three second display units 121 connected to the same second signal line 620 are three different colored micro-light-emitting diodes (LEDs) of different colors: red, green, and blue. The first terminal 1211 is the P-terminal of the second display unit 121. The second terminals, i.e., the N-terminals, of the three second display units 121 are electrically connected to different common voltage sources Vss1 to Vss3. In other words, every three second display units 121 (e.g., red, green, and blue) form a group, each group is connected to one second signal line 620, and the three common voltage sources Vss1 to Vss3 are connected to different second display units 121 within each group. This arrangement reduces the number of second signal lines 620 required, thereby reducing difficulties in circuit design and wiring, and improving aperture ratio and process yield. Especially when the first signal input side 301 is the short side of the first substrate 100, the number of lines can be reduced due to the limited line space.

[0074] The above Figure 9 The circuit configuration shown can also be used in the circuit design of the third display unit 231 on the second substrate 200, depending on requirements. However, in different embodiments, for example... Figure 10 In the illustrated embodiment, different second signal lines 620 can be used to electrically connect different second display units 121, and these second display units 121 are electrically connected to the same common power supply line Vss. For example, when the first signal input side 301 is the long side of the first substrate 100, this design can be adopted because there is sufficient line space.

[0075] Figure 11 Another embodiment of the first substrate 100 is shown. For example... Figure 11As shown, the second signal line 620, in addition to providing the driving signal for the second display unit 231, also provides display driving signals (i.e., display data signals) to each of the first display units 111 in the same row according to a timing sequence. In other words, the second display unit 231 shares a data signal line with the first display unit 111, while the first driving signal source 601 provides driving signals to the second display unit 231 during the blanking time between two frames displayed in the first display unit area 110. The blanking time is much shorter than the display time of one frame in the first display unit area 110; for example, the blanking time may only be 7.7% to 12.2% of the full frame time (i.e., the blanking time plus the display time of the first display unit area 110). Therefore, sufficient display brightness of the second display unit 121 can be maintained by increasing the current supplied to it. By designing the second display unit 231 to share data signal lines with the first display unit 111, the vertical lines on the first substrate 100 can be reduced. Therefore, the extra space can be used to increase the number of vertical gate signal lines during wiring design, thereby improving the charging rate of the first display unit 111.

[0076] Figure 12A and Figure 12B Variations of the display device 10 are shown respectively. Figure 12A In the first substrate 100, the second display unit area 120 can be disposed on the side perpendicular to the first signal input side 301. On the second substrate 200, the third display unit area 230 is disposed not only on the side perpendicular to the second signal input side 302, but also on the side opposite to the second signal input side 302. By reducing the number of second display units 121 on the first substrate, the number of first signal lines 620 can be reduced simultaneously, thereby increasing the aperture ratio of the display device.

[0077] In addition Figure 12B In the illustrated embodiment, on the first substrate 100, the second display unit 120 can be disposed on the side perpendicular to the first signal input side 301, or it can be disposed only at a position closer to the first signal input side 301 to reduce signal delay. On the second substrate 200, the third display unit area 230 is disposed on both the side perpendicular to and opposite to the second signal input side 302, and is located at a position farther away from the second signal input side 302. Since the trace distance between the second signal input side 302 and the third display unit area 230 is relatively long, a wider linewidth can be used to reduce signal delay. Since the line and component density on the second substrate 200 is relatively low, the limitations of using a wider linewidth design are also less.

[0078] Figure 13 The diagram shown is a flowchart of an embodiment of the display device driving method of the present invention. Figure 13 and Figure 6 As shown, the driving method includes the following steps. Step 1310 includes inputting a first signal S1, such as a gate control signal, from the first signal input side 301 of the first substrate 100 to the first display unit 111. Step 1330 includes inputting a second signal S2 from the first signal input side 301 to a second display unit 121 on the first substrate, wherein the second display unit 121 is different from the first display unit 111. In one embodiment, as... Figure 9 As shown, this step includes inputting the same second signal S2 to the first terminal 1211 of the three second display units 121; and electrically connecting the second terminal 1212 of each of the three second display units 121 to different common voltage sources Vss1 to Vss3. In another embodiment, as Figure 11 As shown, the same signal path is used to provide the display drive signal to the first display unit and the second signal S2 to the second display unit in a timing sequence.

[0079] Step 1350 includes inputting a third signal S3 from a second signal input side 302 of a second substrate 200 that at least partially overlaps with the first substrate 100 to drive a third display unit 231 on the second substrate 200, wherein the second signal input side 302 corresponds to the first signal input side 301, such as... Figure 7 As shown. In one embodiment, as Figure 8 As shown, this step may include inputting a third signal S3 on the first signal input side 301; and performing inter-board signal transmission between the first transition area 510 of the first signal input side 301 and the second transition area 520 of the second signal input side 302 to transmit the third signal S3 to the second signal input side 302.

[0080] The above description is merely a selection of preferred embodiments of the present invention. It should be noted that various changes and modifications can be made to the present invention without departing from its concept and principles. Those skilled in the art should understand that the present invention is defined by the appended claims, and that various possible substitutions, combinations, modifications, and uses, etc., within the spirit of the present invention, do not exceed the scope defined by the appended claims.

Claims

1. A display device comprising: A first substrate having: A first display unit area, comprising a plurality of first display units; and A second display unit area, at least partially located on a first side of the first display unit area, and comprising a plurality of second display units; wherein the second display units are different from the first display units; and A second substrate, at least partially stacked with the first substrate, and having: A third display unit area, the vertical projection range of which is at least partially located on a second side of the first display unit area on the first substrate; wherein the third display unit area includes a plurality of third display units.

2. The display device of claim 1, wherein the first substrate has a first signal input side and a sector area distributed along the first signal input side, the sector area including at least a first transition area; and The second substrate has a second signal input side corresponding to the first signal input side and at least one second transition area distributed along the second signal input side. The first transition area has a plurality of first transition pads that are electrically connected to the plurality of second transition pads in the second transition area to perform inter-board signal transmission.

3. The display device as claimed in claim 2, further comprising a first driving signal source and a second driving signal source, wherein the sector includes at least one signal input area and the at least one first transition area spaced apart; the first driving signal source is electrically connected to the signal input area, and the second driving signal source is electrically connected to the first transition area.

4. The display device as claimed in claim 1, wherein the first substrate has a first signal input side, the first signal input side and the first side are opposite sides of the first display unit area, and the two ends of the second side are respectively connected to the first side and the first signal input side.

5. The display device as claimed in claim 4, wherein the first substrate comprises: Multiple first signal lines extend from the first signal input side and are electrically connected to the at least one first display unit; and Multiple second signal lines extend from the first signal input side and are electrically connected to at least one of the second display units.

6. The display device of claim 5, wherein the first substrate further has a plurality of gate signal lines, the gate signal lines being on a different layer from the first signal lines and extending in a direction traversing the first signal lines; each of the first signal lines being electrically connected to each of the gate signal lines.

7. The display device of claim 5, wherein each of the second signal lines is electrically connected to a first terminal of the three second display units, and a second terminal of each of the three second display units is connected to a different common voltage source.

8. The display device of claim 5, wherein each of the second signal lines is simultaneously electrically connected to a plurality of the first display units to provide display drive signals for the first display units and display drive signals for the at least one second display unit in a timing sequence.

9. A display device, comprising: A first substrate includes a first signal input side; wherein, The first substrate has: Multiple first display units; Multiple first signal lines extend from the first signal input side and are electrically connected to at least one of the first display units. Multiple second display units; wherein the second display unit is different from the first display unit; and Multiple second signal lines extend from the first signal input side and are electrically connected to at least one of the second display units. A second substrate, at least partially stacked with the first substrate, and including a second signal input side corresponding to the first signal input side; wherein the second substrate has: Multiple third display units; and Multiple third signal lines extend from the second signal input side and are electrically connected to at least one of the third display units.

10. The display device of claim 9, wherein the first substrate has a sector area distributed along the first signal input side, the sector area including at least a first transition area; and The second substrate has at least one second transition region distributed along the second signal input side, and the first transition region is electrically connected to the second transition region to perform inter-board signal transmission.

11. The display device of claim 10, further comprising a first driving signal source and a second driving signal source, the sector area including at least one signal input area and the at least one first transition area spaced apart; the first driving signal source is electrically connected to the signal input area, and the second driving signal source is electrically connected to the first transition area.

12. The display device of claim 9, wherein the first substrate further has a plurality of gate signal lines, the gate signal lines being on a different layer from the first signal lines and extending in a direction traversing the first signal lines; each of the first signal lines being electrically connected to each of the gate signal lines.

13. The display device of claim 9, wherein each of the second signal lines is electrically connected to a first terminal of the three second display units, and a second terminal of each of the three second display units is connected to a different common voltage source.

14. The display device of claim 9, wherein each of the second signal lines is simultaneously electrically connected to a plurality of the first display units to provide display drive signals for the first display units and display drive signals for the at least one second display unit in a timing sequence.

15. A method for driving a display device, comprising the following steps: A first signal is input from a first signal input side of a first substrate to at least one first display unit on the first substrate; A second signal is input from the first signal input side of the first substrate to at least one second display unit on the first substrate, wherein the second display unit is different from the first display unit; and A third signal is input from a second signal input side of a second substrate that at least partially overlaps with the first substrate to drive a plurality of third display units on the second substrate, wherein the second signal input side corresponds to the first signal input side.

16. The driving method of claim 15, wherein the third signal input step comprises: The third signal is input to the first signal input side; and Inter-board signal transmission is performed between a first transition area on the first signal input side and a second transition area on the second signal input side to transmit the third signal to the second signal input side.

17. The driving method of claim 15, wherein the first signal input step includes inputting a gate control signal as the first signal.

18. The driving method of claim 15, wherein the second signal input step comprises: The same second signal is input to a first terminal of one of the three second display units; and The second terminal of each of the three second display units is electrically connected to a different common voltage source.

19. The driving method of claim 15, wherein the second signal input step comprises providing display driving signals to the first display units in a timing sequence via the same signal path and providing the second signal to the at least one second display unit.

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