TWI717217B - Display apparatus - Google Patents

Abstract

A display apparatus including a substrate, a plurality of first pixel units and a plurality of second pixel units is provided. The first pixel units are disposed in a central display region. Each first pixel unit includes a plurality of first bonding pads arranged along a first direction and a first light emitting diode device electrically connected to the first bonding pads. The light emitting diode devices of the first pixel units are arranged with a first distance along a second direction. The second pixel unit is disposed in a peripheral display region of the substrate and includes a plurality of second bonding pads and a second light emitting diode device electrically connected to the second bonding pads. A second distance between the second light emitting diode device and the adjacent first light emitting diode device arranged along the second direction is equal to the first distance. The first bonding pads of two adjacent first pixel units are arranged along the second direction with a third distance. The second bonding pads of the second pixel unit and the first bonding pads of the adjacent first pixel unit are arranged along the second direction with a fourth distance and the third distance is not equal to the fourth distance.

Description

Display device

The present invention relates to an electronic device, and more particularly to a display device.

The light emitting diode display panel includes an active device substrate and a plurality of light emitting diode devices transferred on the active device substrate. Inheriting the characteristics of light-emitting diodes, light-emitting diode display panels have the advantages of power saving, high efficiency, high brightness, and fast response time. In addition, compared with organic light-emitting diode display panels, light-emitting diode display panels also have advantages such as easy color adjustment, long light-emitting life, and no image burn-in. Therefore, LED display panels are regarded as the next generation of display technology. However, since a circuit with no display function is provided around the LED display panel, it is not easy to realize a LED display panel with a narrow frame or even without a frame.

The invention provides a display device with a narrow frame or no frame.

The display device of the present invention includes a substrate, a plurality of first pixel units and a second pixel unit. The substrate has a central display area and an edge display area. Edge display area Located between the first edge of the substrate and the central display area. The first pixel units are arranged in the central display area, and each includes a plurality of first pads and first light emitting diode elements. The first pads are arranged along the first direction and extend in the second direction. The first light emitting diode element is electrically connected to the first pads. The plurality of first light emitting diode elements of the plurality of first pixel units are arranged at a first distance in the second direction. The second pixel unit is arranged in the edge display area and arranged in the second direction with the plurality of first pixel units. The second pixel unit includes a plurality of second pads and second light emitting diode elements. The second pads are arranged along the first direction and extend in the second direction. The second light emitting diode device is electrically connected to the plurality of second pads. The second light-emitting diode element and the adjacent first light-emitting diode element are arranged at a second distance in the second direction, and the second distance is equal to the first distance. The plurality of first pads of two adjacent first pixel units are arranged in the second direction with a third distance. The second pads of the second pixel unit and the first pads of the adjacent first pixel unit are arranged in the second direction at a fourth distance, and the third distance is not equal to the fourth distance.

Based on the above, in the display device of an embodiment of the present invention, the plurality of first light emitting diode elements of the plurality of first pixel units located in the central display area and the second of the second pixel units located in the edge display area The light emitting diode elements are arranged in one direction at equal intervals. The distance between the first pads of the first pixel units arranged in this direction is not equal to the second pads of the second pixel unit arranged in this direction and the adjacent first pixels The distance between the first pads of the unit makes the layout space of the two pixel units for circuit configuration different. Accordingly, the design margin of the overall circuit of the display device can be increased, which is helpful to realize the narrow frame of the display device, and even It is a borderless design.

10, 11, 12, 13, 13R, 20, 21, 21R: display device

100: substrate

100a, 100b, 100c, 100d, 100e: edge

100S: Motherboard

BP0, BP0’, BP0A, BP1, BP2, BP2’, BP2”, BP2A, BP3: pad

BPG0, BPG0’, BPG1, BPG2, BPG2’: Pad group

BR0, BR1, BR2, BR3: junction area

C, C’: corner

D1, D2: direction

d1~d12: distance

CDR: Central display area

EC0, EC0’, EC0A, EC0B, EC0C, EC1, EC2, EC2A, EC2B, EC2C, EC2D, EC3, EC3A: drive circuit

LED1, LED1x, LED1r, LED2, LED2x, LED2r, LED3: light-emitting diode components

L0, L0’, L0”, L1, L2, L2’, L2”: length

PDR: Edge display area

PU0, PU0’, PU0A, PU0B, PU0C: corner pixel unit

PU1, PU1r: the first pixel unit

PU2, PU2A, PU2B, PU2C, PU2Cr, PU2D: second pixel unit

PU3, PU3A: the third pixel unit

RR0, RR0’, RR1, RR2, RR2’, RR2", RR2a, RR2b, RR3: spare area

SBR: Side pad area

S1, S2: Spacing

W: width

I, II, III: area

FIG. 1 is a schematic top view of a display device according to a first embodiment of the invention.

2 and 3 are enlarged schematic diagrams of two partial regions of the display device of FIG. 1.

4 is a schematic top view of a display device according to a second embodiment of the invention.

FIG. 5 is a schematic top view of a display device according to a third embodiment of the invention.

FIG. 6 is a schematic top view of a display device according to a fourth embodiment of the invention.

FIG. 7 is a schematic top view of the display device of FIG. 6 after repair.

FIG. 8 is a schematic top view of a display device according to a fifth embodiment of the present invention.

FIG. 9 is an enlarged schematic diagram of a partial area of the display device of FIG. 8.

10 is a schematic top view of a display device according to a sixth embodiment of the invention.

FIG. 11 is a schematic top view of the display device of FIG. 10 after repair.

As used herein, "approximately", "approximately", "essentially", or "substantially" includes the stated value and the average value within the acceptable deviation range of the specific value determined by a person of ordinary skill in the art, taking into account all The measurement in question and the specific number of errors associated with the measurement (ie, the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or, for example, within ±30%, ±20%, ±15%, ±10%, ±5%. Furthermore, "about", "approximately", "essentially", or "substantially" used in this article A more acceptable range of deviation or standard deviation can be selected according to the measurement properties, cutting properties or other properties, and one standard deviation can be used for all properties.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. 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 can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements. As used herein, "connection" can refer to physical and/or electrical connection. Furthermore, "electrical connection" can mean that there are other components between the two components.

In addition, relative terms such as "lower" or "bottom" and "upper" or "top" can be used herein to describe the relationship between one element and another element, as shown in the figure. It should be understood that relative terms are intended to include different orientations of the device other than those shown in the figures. For example, if the device in one figure is turned over, elements described as being on the "lower" side of other elements will be oriented on the "upper" side of the other elements. Therefore, the exemplary term "lower" may include an orientation of "lower" and "upper", depending on the specific orientation of the drawing. Similarly, if the device in one figure is turned over, elements described as "below" or "below" other elements will be oriented "above" the other elements. Thus, the exemplary terms "above" or "below" can include an orientation of above and below.

Reference will now be made in detail to the exemplary embodiments of the present invention, and examples of the exemplary embodiments are illustrated in the accompanying drawings. Whenever possible, the same component symbols are used in the drawings and descriptions to indicate the same or similar parts.

FIG. 1 is a schematic top view of a display device according to a first embodiment of the invention. FIG. 2 is an enlarged schematic diagram of a partial area I of the display device in FIG. 1. FIG. 3 is an enlarged schematic diagram of a partial area II of the display device in FIG. 1. For clarity of presentation, FIG. 1 omits the illustration of the pads, light-emitting diode elements, driving circuits, and side pad regions SBR of FIGS. 2 and 3. Specifically, FIGS. 1 to 3 show the substrate 100 that has not been cut from the mother board 100S, and the substrate 100 cut from the mother board 100S has its edges roughly located at the numbers 100a, 100b, 100c and The dotted line indicated by 100d.

1 and 2, the display device 10 includes a substrate 100 and a plurality of pixel units. The substrate 100 has a central display area CDR and an edge display area PDR, and the edge display area PDR is located between the edge 100a of the substrate 100 (or the edge 100e of the mother board 100S) and the central display area CDR. The plurality of pixel units include a first pixel unit PU1, a second pixel unit PU2, and a corner pixel unit PU0. The first pixel unit PU1 is disposed in the central display area CDR of the substrate 100. The second pixel unit PU2 is disposed in the edge display area PDR of the substrate 100. The corner pixel unit PU0 is arranged at the corner C of the edge display area PDR. In this embodiment, the material of the substrate 100 can be glass, quartz, organic polymer, or opaque/reflective material (for example, wafer, ceramic, or other applicable materials), or other applicable materials. material.

Furthermore, the pixel unit includes a plurality of pads and light-emitting diode elements, and the light-emitting diode elements are electrically connected to these pads. In this embodiment, the number of pads of each pixel unit and the number of light-emitting diode elements are exemplified by six (ie three groups) and three respectively, which does not mean that the present invention is The content of the schema disclosure is limited. In other embodiments, the number of pads and the number of light-emitting diode elements of each pixel unit can also be adjusted to one, two, or more than four according to actual design requirements. For example, in this embodiment, each pixel unit (such as the first pixel unit PU1, the second pixel unit PU2, and the corner pixel unit PU0) has three light emitting diode elements arranged in the direction D1, respectively It is a light-emitting diode element LED1, a light-emitting diode element LED2, and a light-emitting diode element LED3, and the light-emitting colors of these light-emitting diode elements can be selected from red, green, and blue, respectively, to meet the requirements of color mixing, but Not limited to this.

Specifically, the length of the light emitting diode element of the first pixel unit PU1 in the direction D1 is equal to the length of the light emitting diode element of the second pixel unit PU2 in the direction D1. Similarly, the length of the light emitting diode element of the first pixel unit PU1 in the direction D2 is equal to the length of the light emitting diode element of the second pixel unit PU2 in the direction D2. In other words, the sizes of the light emitting diode elements of the first pixel unit PU1 and the second pixel unit PU2 are the same.

On the other hand, the multiple pads BP1 of the first pixel unit PU1 are arranged in the direction D1 and extend in the direction D2, and the pads BP1 have a length L1 in the direction D2. The pads BP2 of the second pixel unit PU2 are arranged in the direction D1 and extend in the direction D2, and the pads BP2 have a length L2 in the direction D2. In this embodiment, the length L1 of the pad BP1 of the first pixel unit PU1 is equal to the length L2 of the pad BP2 of the second pixel unit PU2, but the invention is not limited thereto. The pad BP0 of the corner pixel unit PU0 has a length L0 in the direction D2, and the length L0 of the pad BP0 can be selectively equal to the length L2 of the pad BP2 of the second pixel unit PU2 (or the first picture The length L1 of the pad BP1 of the element unit PU1), but the invention is not limited to this.

In this embodiment, the six pads of each pixel unit (for example, the first pixel unit PU1, the second pixel unit PU2, and the corner pixel unit PU0) can form three pad groups, and three light-emitting Diode elements (such as light-emitting diode element LED1, light-emitting diode element LED2, and light-emitting diode element LED3) are respectively electrically connected to the three pad groups, but not limited thereto.

It is worth noting that the two light-emitting diode elements (such as light-emitting diode element LED1, light-emitting diode element LED2, or light-emitting diode element) of two adjacent first pixel units PU1 arranged in direction D2 The elements LED3) are arranged at intervals in the direction D2 by the first distance d1. The two light-emitting diode elements of the first pixel unit PU1 and the second pixel unit PU2 arranged in the direction D2 and adjacent to each other (e.g., light-emitting diode element LED1, light-emitting diode element LED2 or light-emitting diode The element LED3) is arranged at intervals in the direction D2 by a second distance d2, and the second distance d2 is equal to the first distance d1.

On the other hand, any two adjacent first pixel units PU1 arranged in the direction D2 and two light-emitting diode elements (such as light-emitting diode element LED1, light-emitting diode element LED2 or light-emitting diode The two pad groups BPG1 electrically connected to the body element LED3) are spaced apart in the direction D2 by the third distance d3. The second pixel unit PU2 and the first pixel unit PU1 that are arranged in the direction D2 and are adjacent to each other are connected to two light-emitting diode elements (such as light-emitting diode element LED1, light-emitting diode element LED2 or light-emitting diode). The body element LED3) the pad group BPG2 and the pad group BPG1 that are electrically joined are spaced apart in the direction D2 by the fourth distance d4, and the third distance d3 Not equal to the fourth distance d4. That is, the bonding position of the light emitting diode element of the first pixel unit PU1 on the pad is different from the bonding position of the light emitting diode element of the second pixel unit PU2 on the pad.

More specifically, the pad BP1 of the first pixel unit PU1 has a bonding area BR1 overlapping a light emitting diode element (for example, light emitting diode element LED1, light emitting diode element LED2, or light emitting diode element LED3) And the spare area RR1 other than the junction area BR1. The pad BP2 of the second pixel unit PU2 has the junction area BR2 and the junction area BR2 overlapping the light emitting diode element (for example, light emitting diode element LED1, light emitting diode element LED2, or light emitting diode element LED3) The spare area RR2. It should be noted that the light emitting diode elements of the first pixel unit PU1 and the second pixel unit PU2 are located between the spare area RR1 of the pad BP1 and the spare area RR2 of the pad BP2 in the direction D2. In other words, the spare area RR1 of the pad BP1 of the first pixel unit PU1 and the spare area RR2 of the pad BP2 of the second pixel unit PU2 are arranged in a mirror image with respect to the light emitting diode elements of the two pixel units. Accordingly, the circuit layout space of the PDR in the edge display area can be increased, which helps to realize a narrow frame or even a frameless design of the display device 10.

On the other hand, the two pad groups BPG1 in which the two adjacent first pixel units PU1 are arranged in the direction D1 and are electrically connected to the two light emitting diode elements LED1 are arranged at intervals of a fifth distance d5. The two pad groups BPG2 in which the two adjacent second pixel units PU2 arranged in the direction D1 are electrically connected to the two light emitting diode elements LED1 are arranged at intervals of a sixth distance d6, and the fifth distance d5 is equal to the sixth distance d6. From another point of view, multiple light beams of the same color The light-emitting diode elements (for example, the light-emitting diode element LED1, the light-emitting diode element LED2, or the light-emitting diode element LED3) are arranged along the direction D1 or the direction D2 at equal intervals.

In this embodiment, the corner pixel unit PU0 located in the edge display area PDR is adjacent to the edge 100a and the edge 100b connected to the substrate 100. In other words, the corner pixel unit PU0 is located between the edge 100b of the substrate 100 and the second pixel unit PU2. The corner pixel unit PU0 includes a plurality of pads BP0 and light emitting diode elements electrically connected to the pads BP0. It is worth noting that the two light-emitting diode elements of the first pixel unit PU1 and the corner pixel unit PU0 arranged in the direction D2 and adjacent to each other (such as light-emitting diode element LED1, light-emitting diode element LED2 or The light emitting diode elements LED3) are arranged at intervals in the direction D2 by a seventh distance d7, and the seventh distance d7 is equal to the first distance d1.

On the other hand, the corner pixel unit PU0 and the first pixel unit PU1 that are arranged in the direction D2 and are adjacent to each other are connected to two light emitting diode elements (such as light emitting diode element LED1, light emitting diode element LED2, or The pad group BPG0 and the pad group BPG1 electrically connected to the light emitting diode element LED3) are spaced apart in the direction D2 by the eighth distance d8. In this embodiment, the eighth distance d8 is not equal to the third distance d3, and is equal to the fourth distance d4, but it is not limited thereto. That is, the bonding position of the light-emitting diode element of the corner pixel unit PU0 on the pad is different from the bonding position of the light-emitting diode element of the first pixel unit PU1 on the pad.

More specifically, the pad BP0 of the corner pixel unit PU0 has a light-emitting diode element (such as light-emitting diode element LED1, light-emitting diode element The bonding area BR0 of the LED2 or the light emitting diode element LED3) and the spare area RR0 other than the bonding area BR0. It should be noted that the light emitting diode elements of the corner pixel unit PU0 and the first pixel unit PU1 are located between the spare area RR1 of the pad BP1 and the spare area RR0 of the pad BP0 in the direction D2. In other words, the spare area RR0 of the pad BP0 of the corner pixel unit PU0 and the spare area RR1 of the pad BP1 of the first pixel unit PU1 are arranged in mirror images with respect to the light-emitting diode elements of the two pixel units, but The present invention is not limited to this.

Furthermore, the display device 10 may further include another corner pixel unit PU0' located at another corner C'of the edge display area PDR. The corner pixel unit PU0' is adjacent to the edge 100a and the edge 100c connected to the substrate 100, wherein the edge 100c and the edge 100b are arranged opposite to each other. That is, the corner pixel unit PU0' is located between the edge 100c of the substrate 100 and the second pixel unit PU2. It is worth noting that the corner pixel unit PU0' and the first pixel unit PU1 arranged in the direction D2 and adjacent to each other are connected to two light-emitting diode elements (such as light-emitting diode element LED1, light-emitting diode element The pad group BPG0' and the pad group BPG1 electrically connected to the LED2 or the light emitting diode element LED3) are spaced apart in the direction D2 by a ninth distance d9. The ninth distance d9 is not equal to the eighth distance d8, but is equal to the third distance d3. That is, the bonding position of the light emitting diode element of the corner pixel unit PU0' on the pad is the same as the bonding position of the light emitting diode element of the first pixel unit PU1 on the pad.

More specifically, the spare area RR0 of the pad BP0' of the corner pixel unit PU0' is located between the light emitting diode element of the corner pixel unit PU0' and the adjacent light emitting diode element of the first pixel unit PU1. And the light emission of the first pixel unit PU1 The pole body element is located between the spare area RR0 of the pad BP0' of the corner pixel unit PU0' and the spare area RR1 of the pad BP1 of the first pixel unit PU1. That is to say, the spare area RR0 of the pad BP0' of the corner pixel unit PU0' and the spare area RR1 of the pad BP1 of the first pixel unit PU1 do not appear mirror images with respect to the light emitting diode elements of the two-pixel unit. Configuration. It should be noted that in this embodiment, the first distance d1 to the ninth distance d9 are all defined by the distance between the geometric centers of two components (such as pads or light-emitting diode elements), but not Is limited. For example, the first distance d1 to the ninth distance d9 can also be defined by the distance between the edges of the two members.

Furthermore, the pixel unit further includes a driving circuit. For example, the first pixel unit PU1 has a drive circuit EC1, the second pixel unit PU2 has a drive circuit EC2, the corner pixel unit PU0 has a drive circuit EC0, and the corner pixel unit PU0' has a drive circuit EC0', and these The driving circuits can be respectively electrically connected to the corresponding pads to provide the current (or voltage) required when the light-emitting diode element is activated. The driving circuit includes a pixel driving circuit for driving the pixel unit. In order to realize the narrow border (or no border) design of the display device 10, the driving circuit EC2 of the second pixel unit PU2, the driving circuit EC0 of the corner pixel unit PU0, and the driving circuit EC0' of the corner pixel unit PU0' can also be used separately. Including non-pixel drive circuit. For example, the non-pixel drive circuit is, for example, a multiplexer (MUX), an integrated gate driver-on-array (GOA), an electrostatic protection (ESD) circuit, a test (TEST) circuit or Its combination.

From another point of view, since the spare area RR1 of the pad BP1 of the first pixel unit PU1 is opposite to the spare area RR2 of the pad BP2 of the second pixel unit PU2 The light-emitting diode elements in the two pixel units are arranged in mirror images, which can increase the circuit layout space of the edge display area PDR to configure non-pixel driving circuits. Accordingly, it is helpful to realize the narrow frame (or frameless) design of the display device 10. On the other hand, the increased circuit layout space in the edge display area can also be used to configure the side pad area SBR, and the side pad area SBR can be provided with side pads (not shown). The side pads can be electrically connected to wires (not shown) located on the sidewalls of the substrate 100, and signal lines (such as data lines, scan lines, power lines, common lines, Or other circuit traces) can be electrically connected to the fan-out traces (not shown) and/or the chip (not shown) on the other side surface of the substrate 100 through the side pads and the wires located on the side wall of the substrate 100 .

Other embodiments will be listed below to describe the disclosure in detail, wherein the same components will be marked with the same symbols, and the description of the same technical content will be omitted. For the omitted parts, please refer to the foregoing embodiments, and will not be repeated hereafter.

4 is a schematic top view of a display device according to a second embodiment of the invention. Please refer to FIG. 4, the main difference between the display device 11 of this embodiment and the display device 10 of FIG. 2 is that the pad configuration of the second pixel unit is different. Specifically, the second pixel unit PU2A of the display device 11 has two types of pad groups arranged in different ways, such as a pad group BPG2 and a pad group BPG2'. In this embodiment, the spare area RR2' of the pad BP2' of the pad group BPG2' and the spare area RR2 of the pad BP2 of the pad group BPG2 are located opposite to the light emitting diode element of the second pixel unit PU2A. On both sides. That is, the light-emitting diode element LED1, the light-emitting diode element LED2, and the light-emitting diode element LED3 of the second pixel unit PU2A are located in the spare of the pad BP2 Between the area RR2 and the spare area RR2' of the pad BP2'.

It is worth noting that the spare area RR2' of the pad BP2' of the second pixel unit PU2A and the spare area RR1 of the pad BP1 of the adjacent first pixel unit PU1 are relative to the light emitting diodes of the two pixel units. The body element does not present a mirror configuration. For example, the second pixel unit PU2A and the first pixel unit PU1 that are arranged in the direction D2 and are adjacent to each other are connected to two light-emitting diode elements (such as light-emitting diode element LED1 and light-emitting diode element LED2). Or the light-emitting diode element LED3) the pad group BPG2' and the pad group BPG1 that are electrically connected are spaced apart in the direction D2 by the tenth distance d10. In this embodiment, the tenth distance d10 is not equal to the fourth distance d4, and is equal to the third distance d3, but it is not limited thereto.

In this embodiment, the light-emitting color of the light-emitting diode element (such as the light-emitting diode element LED1) electrically connected to the pad group BPG2' is red, for example, while the light-emitting diode electrically connected to the pad group BPG2 The light-emitting color of the body element (such as the light-emitting diode element LED2 or the light-emitting diode element LED3) is, for example, green or blue, but not limited to this. That is, the light-emitting color of the light-emitting diode element electrically connected to the pad group BPG2' is different from the light-emitting color of the light-emitting diode element electrically connected to the pad group BPG2.

In this embodiment, the arrangement relationship of the pad BP2 of the second pixel unit PU2A and the pad BP1 of the first pixel unit PU1 with respect to the multiple light-emitting diode elements of the two pixel units is similar to the previous embodiment.的display device 10. Therefore, for detailed description, please refer to the relevant paragraphs of the foregoing embodiment, which will not be repeated here. It is worth mentioning that because the spare area RR1 of the pad BP1 of the first pixel unit PU1 and the second picture The spare area RR2 of the pad BP2 of the pixel unit PU2A is arranged in a mirror image with respect to the light emitting diode elements of the two pixel units, which can increase the circuit layout space of the edge display area PDR. For example, the layout area of the driving circuit EC2A of the second pixel unit PU2A may be larger than the layout space of the driving circuit EC1 of the first pixel unit PU1. Accordingly, it is helpful to realize a narrow frame or even a frameless design of the display device 11.

FIG. 5 is a schematic top view of a display device according to a third embodiment of the invention. Referring to FIG. 5, the main difference between the display device 12 of this embodiment and the display device 10 of FIG. 2 is that the pad lengths of the second pixel unit and the corner pixel unit are different. Specifically, the length L2' of the pad BP2" of the second pixel unit PU2B of the display device 12 in the direction D2 may be smaller than the length L1 of the pad BP1 of the first pixel unit PU1 in the direction D2. For example, In this embodiment, the ratio of the length L2' of the pad BP2" to the length L1 of the pad BP1 is 2:3, so that the layout space of the driving circuit EC2B of the second pixel unit PU2B is larger than that of the first picture. The layout space of the driving circuit EC1 of the element unit PU1 is not limited to this. In other words, the circuit layout space of the PDR in the edge display area can be increased, which helps to realize a narrow frame or even a frameless design of the display device 12.

On the other hand, the ratio of the length L0' of the pad BP0A of the corner pixel unit PU0A to the length L1 of the pad BP1 of the first pixel unit PU1 in this embodiment may also be 2:3. In other words, the length L0' of the pad BP0A of the corner pixel unit PU0A and the length L2' of the pad BP2" of the second pixel unit PU2B may be the same, but not limited to this. In other embodiments, the first The length L1 of the pad BP1 of one pixel unit PU1, the length L2' of the pad BP2" of the second pixel unit PU2B, and the corner pixel unit The ratio of the length L0' of the pad BP0A of PU0A can also be 3:2:1. More specifically, the pad of the corner pixel unit is not provided with a spare area RR0 (that is, the corner pixel unit cannot be repaired).

In particular, pads of different lengths can provide different repair times for light-emitting diode devices. For example, in this embodiment, the spare area RR1 of the pad BP1 of the first pixel unit PU1 is adapted to provide two repairs, and the spare area RR2" of the pad BP2" of the second pixel unit PU2B and the corner The spare area RR0' of the pad BP0A of the pixel unit PU0A is suitable for providing one-time repair, but the present invention is not limited to this. According to other embodiments, the number of repairs (or pad length) of the pixel unit can also be adjusted according to actual product requirements (such as process yield, circuit design).

FIG. 6 is a schematic top view of a display device according to a fourth embodiment of the invention. FIG. 7 is a schematic top view of the display device of FIG. 6 after repair. Please refer to FIG. 6, the main difference between the display device 13 of this embodiment and the display device 12 of FIG. 5 is that the configuration of the pads of the second pixel unit and the corner pixel unit are different. Specifically, the second pixel unit PU2C includes a pad BP2 and a pad BP2" having different lengths. In this embodiment, the length L2" of the pad BP2 in the direction D2 of the second pixel unit PU2C is the same as the The ratio of the length L2' of the pad BP2" in the direction D2 may be 3:2, but is not limited to this. On the other hand, the corner pixel unit PU0B may also include pads BP0 and pads BP0A having different lengths. In this embodiment, the ratio of the length L0" of the pad BP0 in the direction D2 of the corner pixel unit PU0B to the length L0' of the pad BP0A in the direction D2 may be 3:2, but is not limited thereto.

It is worth mentioning that because the spare area RR1 of the pad BP1 of the first pixel unit PU1 and the spare area RR2 of the pad BP2 of the second pixel unit PU2C (or the pad BP2 of the second pixel unit PU2C" The spare areas RR2") are respectively located on opposite sides of the light emitting diode elements of the two pixel units, which can increase the circuit layout space of the edge display area PDR. For example, the layout area of the driving circuit EC2C of the second pixel unit PU2C may be larger than the layout space of the driving circuit EC1 of the first pixel unit PU1. Similarly, the spare area RR0 of the pad BP0 of the corner pixel unit PU0B (or the spare area RR0' of the pad BP0A) and the spare area RR1 of the pad BP1 of the first pixel unit PU1 are respectively located in the two pixel units. The opposite sides of the light-emitting diode element can further increase the circuit layout space of the PDR in the edge display area. For example, the layout area of the driving circuit EC0B of the corner pixel unit PU0B may be larger than the layout space of the driving circuit EC1 of the first pixel unit PU1. Accordingly, it is helpful to realize a narrow frame or even a frameless design of the display device 13.

Furthermore, when several pixel units of the display device 13 are detected to be abnormal, for example, during the lighting test, the second pixel unit PU2C cannot be activated due to the light-emitting diode element LED2x (that is, it cannot emit light). ) Is judged to be abnormal and can be repaired. The repairing step may include removing the abnormal light emitting diode element LED2x and transferring and bonding the repaired light emitting diode element to the pad BP2" where the original abnormal light emitting diode element LED2x is joined. Please refer to Figure 7, the repaired display device 13R, the repaired second pixel unit PU2Cr between the light-emitting diode element LED2r and the light-emitting diode element LED3 has a spacing S1 (or offset) in the direction D2 Shift), and the light-emitting diode element has a direction D2 There is a width W, and the ratio of the distance S1 to the width W can be in the range of 0.8 to 1, but the invention is not limited thereto. In other embodiments, when the light-emitting diode element LED1 of the second pixel unit PU2C is determined to be abnormal, the position of the repaired light-emitting diode element on the pad BP2 is the same as that of the original abnormal light-emitting diode. The ratio of the distance (or offset) between the positions of the components on the same pad BP2 and the width W can also be in the range of 1 to 2.

FIG. 8 is a schematic top view of a display device according to a fifth embodiment of the present invention. FIG. 9 is an enlarged schematic diagram of a partial area of the display device of FIG. 8. Referring to FIGS. 8 and 9, the main difference between the display device 20 of this embodiment and the display device 10 of FIGS. 1 and 2 is that the display device 20 further includes a third pixel unit PU3 disposed in the edge display area PDR. In detail, the third pixel unit PU3 is located between the edge 100a of the substrate 100 and the second pixel unit PU2. The plurality of pads BP3 of the third pixel unit PU3 are arranged in the direction D1 and extend in the direction D2. It is worth noting that the light emitting diode elements of the second pixel unit PU2 and the light emitting diode elements of the third pixel unit that are arranged in the direction D2 and are adjacent to each other are spaced in the direction D2 by the eleventh distance d11 Set, and the eleventh distance d11 is equal to the second distance d2 (or the first distance d1).

On the other hand, the second pixel unit PU2 and the third pixel unit PU3 that are arranged in the direction D2 and are adjacent to each other are connected to two light-emitting diode elements (such as light-emitting diode element LED1 and light-emitting diode element LED2). Or the light-emitting diode element LED3) electrically bonded pads BP2 are arranged at intervals in the direction D2 by the twelfth distance d12. In this embodiment, the twelfth distance d12 is not equal to the fourth distance d4, and is equal to the third distance d3, but it is not limited thereto. In other words, the light emission of the third pixel unit PU3 The bonding position of the diode element on the pad BP3 is the same as the bonding position of the light emitting diode element of the second pixel unit PU2 on the pad BP2, but is different from the light emitting diode element of the first pixel unit PU1 The bonding position on the pad BP1.

More specifically, the pad BP3 of the third pixel unit PU3 has a bonding area BR3 overlapped with a light emitting diode element (for example, a light emitting diode element LED1, a light emitting diode element LED2, or a light emitting diode element LED3) And the spare area RR3 outside the junction area BR3. The light emitting diode element of the third pixel unit PU3 is located between the spare area RR3 of the pad BP3 and the spare area RR2 of the pad BP2 in the direction D2, and the spare area RR2 of the pad BP2 is located in the third direction D2. Between the light emitting diode element of the pixel unit PU3 and the light emitting diode element of the second pixel unit PU2. In other words, the spare area RR3 of the pad BP3 of the third pixel unit PU3 and the spare area RR2 of the pad BP2 of the second pixel unit PU2 are not mirror images of the light emitting diode elements of the two pixel units. Configuration.

From another point of view, the spare area RR1 of the pad BP1 of the first pixel unit PU1 and the spare area RR3 of the pad BP3 of the third pixel unit PU3 (or the spare area of the pad BP2 of the second pixel unit PU2 The region RR2) is arranged in a mirror image with respect to the light emitting diode elements of the two pixel units. Accordingly, the circuit layout space of the PDR in the edge display area can be increased, which is helpful to realize a narrow frame or even a frameless design of the display device 20.

In particular, in this embodiment, the spare area RR0 of the pad BP0 of the corner pixel unit PU0C is located in the direction D2 of the light emitting diode element of the corner pixel unit PU0C and the light emission of the first pixel unit PU1 Between diode components. and also In other words, the spare area RR0 of the pad BP0 of the corner pixel unit PU0C and the spare area RR1 of the pad BP1 of the first pixel unit PU1 are not mirrored with respect to the light emitting diode elements of the two pixel units. Accordingly, the layout space of the driving circuit EC0C of the corner pixel unit PU0C can be increased.

10 is a schematic top view of a display device according to a sixth embodiment of the invention. FIG. 11 is a schematic top view of the display device of FIG. 10 after repair. Please refer to FIG. 10, the main difference between the display device 21 of this embodiment and the display device 20 of FIG. 9 is that the pad configuration of the second pixel unit is different. Specifically, the pad BP2A of the second pixel unit PU2D of the display device 21 has two separate spare areas, which are a spare area RR2a and a spare area RR2b, respectively. The two spare areas of the pad BP2A are located on opposite sides of the junction area BR2.

In this embodiment, the light emitting diode element of the third pixel unit PU3A is located between the spare area RR3 of the pad BP3 and the spare area RR2a of the pad BP2A of the second pixel unit PU2D, and the second pixel unit The light emitting diode element of PU2D is located between the spare area RR2a and the spare area RR2b of the pad BP2A. In other words, the spare area RR3 of the pad BP3 of the third pixel unit PU3A and the spare area RR2a of the pad BP2A of the second pixel unit PU2D are not mirror images of the light-emitting diode elements of the two pixel units. Configuration. Accordingly, the layout space of the driving circuit EC3A of the third pixel unit PU3A can be increased, which is helpful to realize a narrow frame or even a frameless design of the display device 21. It is worth mentioning that the arrangement of the pad BP2A can also increase the flexibility of the arrangement of the driving circuit in the edge display area PDR.

Furthermore, when several pixel units of the display device 21 are detected Often, for example, during the lighting test, the first pixel unit PU1 is judged to be abnormal because the light emitting diode element LED1x cannot be activated (that is, cannot emit light), and a repair step can be performed. The repairing step may include removing the abnormal light emitting diode element LED1x and transferring and bonding the repaired light emitting diode element to the pad BP1 to which the original abnormal light emitting diode element LED1x is bonded. 11, the repaired display device 21R, the repaired first pixel unit PU1r light-emitting diode element LED1r and the original abnormal light-emitting diode element LED1x has a distance S2 in the direction D2 ( Or offset), and the light emitting diode element LED1r has a width W in the direction D2, and the ratio of the spacing S2 to the width W can be in the range of 0.8 to 2.

In summary, in the display device of an embodiment of the present invention, the plurality of first light-emitting diode elements of the plurality of first pixel units located in the central display area and the plurality of second pixel units located in the edge display area The second light emitting diode elements are arranged in one direction at equal intervals. The distance between the first pads of the first pixel units arranged in this direction is not equal to the second pads of the second pixel unit arranged in this direction and the adjacent first pixels The distance between the first pads of the unit makes the layout space of the two pixel units for circuit configuration different. Accordingly, the design margin of the overall circuit of the display device can be increased, and it is helpful to realize a narrow frame or even a frameless design of the display device.

10: Display device

100: substrate

100a, 100b, 100e: edge

100S: Motherboard

BP0, BP1, BP2: pad

BPG0, BPG1, BPG2: pad set

BR0, BR1, BR2: junction area

C: corner

D1, D2: direction

d1~d8: distance

CDR: Central display area

EC0, EC1, EC2: drive circuit

LED1, LED2, LED3: light-emitting diode components

L0, L1, L2: length

PDR: Edge display area

PU0: corner pixel unit

PU1: The first pixel unit

PU2: second pixel unit

RR0, RR1, RR2: spare area

SBR: Side pad area

I: area

Claims (16)

A display device includes: A substrate having a central display area and an edge display area, wherein the edge display area is located between a first edge of the substrate and the central display area; A plurality of first pixel units are arranged in the central display area, and the first pixel units include: A plurality of first pads, arranged along a first direction and extending in a second direction; and A first light emitting diode element electrically connected to the first pads, and the first light emitting diode elements of the first pixel units are arranged at a first distance in the second direction; as well as A second pixel unit is arranged in the edge display area and arranged in the second direction with the first pixel units. The second pixel unit includes: A plurality of second pads, arranged along the first direction and extending in the second direction; and A second light-emitting diode element is electrically connected to the second pads. The second light-emitting diode element and the adjacent first light-emitting diode element have a second light-emitting diode element in the second direction Distance arrangement, and the second distance is equal to the first distance, The first pads of two adjacent first pixel units are arranged in the second direction at a third distance, and the second pads of the second pixel unit are aligned with the adjacent first pixel units. The first pads of a pixel unit are arranged in the second direction at a fourth distance, and the third distance is not equal to the fourth distance. The display device according to claim 1, wherein the first pad of the first pixel unit has a first pad that overlaps the first light-emitting diode element and is located on one side of the first pad. Bonding area and a first spare area other than the first bonding area, the second pad of the second pixel unit has a second pad overlapping the second light emitting diode element and located on one side of the second pad The second bonding area and a second spare area other than the second bonding area, and the first light-emitting diode element and the second light-emitting diode element are located in the first standby area of the first pad and the Between the second spare area of the second pad. The display device according to the second item of the scope of patent application, wherein the first light-emitting diode element and the second light-emitting diode element have the same light-emitting color and are blue or green. According to the display device described in item 2 of the scope of patent application, the second pixel unit further includes: A plurality of third pads arranged along the first direction and extending in the second direction; and A third light-emitting diode device electrically connected to the third pads, wherein the third pad has a third light-emitting diode device that overlaps the third light-emitting diode device and is located on the side of the third pad Bonding area and a third spare area other than the third bonding area, and the second light emitting diode element and the third light emitting diode element are located in the second standby area and the third area of the second pad Between the third spare area of the pad. The display device according to claim 4, wherein the light-emitting color of the first light-emitting diode element and the second light-emitting diode element are the same, and the light-emitting color of the third light-emitting diode element is different from The light-emitting color of the first light-emitting diode element. According to the display device described in item 5 of the scope of patent application, the light-emitting color of the third light-emitting diode element is red. The display device described in item 2 of the scope of patent application further includes: A third pixel unit is disposed in the edge display area, the third pixel unit is located between the second pixel unit and the first edge of the substrate, and includes: A plurality of third pads arranged along the first direction and extending in the second direction; and A third light emitting diode device electrically connected to the third pads, The third pad has a third bonding area overlapping the third light-emitting diode device and located on one side of the third pad, and a third spare area outside the third bonding area, and the first The light emitting diode element and the third light emitting diode element are located between the third standby area of the third pad and the first standby area of the first pad. The display device described in item 2 of the scope of patent application further includes: A first corner pixel unit is disposed in the edge display area and is adjacent to the first edge of the substrate and a second edge connecting the first edge, and the first corner pixel unit is located at the second edge and Between the second pixel unit and include: A plurality of third pads arranged along the first direction and extending in the second direction; and A third light-emitting diode element electrically connected to the third pads, and the third light-emitting diode element and the second light-emitting diode element are arranged in the first direction, The third pad has a third bonding area overlapping the third light-emitting diode device and located on one side of the third pad, and a third spare area outside the third bonding area, and the third spare area The area is located between the third light-emitting diode element and the first light-emitting diode element, and the first light-emitting diode element is located between the third standby area and the first standby area. The display device described in item 8 of the scope of patent application further includes: A second corner pixel unit is disposed in the edge display area and is adjacent to the first edge of the substrate and a third edge connecting the first edge. The third edge is opposite to the second edge, and the second edge is The two-corner pixel unit is located between the third edge and the second pixel unit, and includes: A plurality of fourth pads arranged along the first direction and extending in the second direction; and A fourth light-emitting diode element electrically connected to the fourth pads, and the fourth light-emitting diode element and the second light-emitting diode element are arranged in the first direction, The fourth pad has a fourth bonding area overlapping the fourth light-emitting diode element and located on one side of the fourth pad, and a fourth spare area outside the fourth bonding area, and the first The light emitting diode element and the fourth light emitting diode element are located between the first standby area and the fourth standby area. The display device according to claim 1, wherein the first pad of the first pixel unit has a first pad that overlaps the first light-emitting diode element and is located on one side of the first pad. Bonding area and a first spare area other than the first bonding area, the second pad of the second pixel unit has a second bonding area overlapping the second light-emitting diode element and located in the second bonding area A second spare area and a third spare area on opposite sides of the area, the first light emitting diode element is located between the first spare area and the third spare area, and the third spare area is located in the first light emitting diode Between the diode element and the second light emitting diode element. The display device described in item 10 of the scope of patent application further includes: A third pixel unit is disposed in the edge display area, the third pixel unit is located between the second pixel unit and the first edge of the substrate, and includes: A plurality of third pads arranged along the first direction and extending in the second direction; and A third light emitting diode device electrically connected to the third pads, The third pad has a third bonding area overlapping the third light-emitting diode device and located on one side of the third pad, and a fourth spare area outside the third bonding area, and the third The light emitting diode element is located between the second spare area of the second pad and the fourth spare area of the third pad. As for the display device described in claim 1, wherein the first pad and the second pad respectively have a first length and a second length in the second direction, and the first pad has a The first length is greater than the second length of the second pad. According to the display device described in claim 1, wherein the second pixel unit further includes: A plurality of third pads arranged along the first direction and extending in the second direction; and A third light emitting diode element electrically connected to the third pads, wherein the second pad and the third pad have a first length and a second length in the second direction, respectively, And the first length is not equal to the second length. According to the display device described in claim 1, wherein the second pixel unit further includes: A plurality of third pads arranged along the first direction and extending in the second direction; and A third light-emitting diode element electrically connected to the third pad, wherein the second light-emitting diode element and the third light-emitting diode element have a distance in the second direction, and the third The light emitting diode element has a width in the second direction, and the ratio of the pitch to the width is between 0.8 and 2. According to the display device described in claim 1, wherein the first pixel unit further includes: A plurality of third pads arranged along the first direction and extending in the second direction; and A third light-emitting diode element electrically connected to the third pad, wherein the first light-emitting diode element and the third light-emitting diode element have a distance in the second direction, and the third The light emitting diode element has a width in the second direction, and the ratio of the pitch to the width is between 0.8 and 2. As for the display device described in claim 1, wherein the first pads of the first pixel units are arranged along the first direction at a fifth distance, and the second pixel units The second pads are arranged along the first direction at a sixth distance, the light-emitting color of the first light-emitting diode element and the second light-emitting diode element are the same, and the fifth distance is equal to the sixth distance .

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