TWI678689B - Display device and repair method thereof - Google Patents

Abstract

A display device includes a substrate, a scanning line, a data line, a pixel structure, a first gate driving circuit, a second gate driving circuit, a first transmission circuit board, a second transmission circuit board, a control circuit board, and a first flexible circuit. board. The first gate driving circuit and the second gate driving circuit are respectively disposed on opposite sides of the substrate. The first pin of the first transmission circuit board is electrically connected to the first gate driving circuit. The second pin of the second transmission circuit board is electrically connected to the control circuit board. The first flexible circuit board has a conductive structure. The conductive structure is connected between the first pin and the second pin and has a disconnection portion, or is electrically connected to one of the first pin and the second pin, and is electrically isolated from the first pin and the second pin. The other of the second pin. In addition, various repair methods for display devices have been proposed.

Description

Display device and repairing method thereof

The invention relates to a display device and a repairing method of the display device.

In order to enable the display to have a narrow frame design, the current process technology of the display has developed a technology in which a gate driving circuit is fabricated on the side of the array substrate, which is a gate driver on array (GOA). The gate signal is provided to the gate driving circuit through the control circuit board to drive the scanning lines in the display, so that the pixel structure in the display can be turned on or off. Generally, as the size of a display increases, a technology of two-sided driving in which two gate driving circuits are respectively located on opposite sides of the display has been developed.

However, when there is a defect in the gate driving circuit on one side, the picture displayed on the display will be abnormal, and therefore the display needs to be repaired to restore normal display. However, if the gate driving circuit on the one side is directly repaired, it will take a lot of repair time and the repair yield is low. Therefore, there is a need to find a repair method that is simple, fast, and can improve the repair yield.

The invention provides a display device and a method for modifying the display device, reducing the repair time of the display device, and / or improving the repair yield of the display device.

The display device of the present invention includes a substrate, a plurality of scanning lines, a plurality of data lines, a plurality of pixel structures, a first gate driving circuit, a second gate driving circuit, a first transmission circuit board, a second transmission circuit board, A control circuit board and a first flexible circuit board. The substrate has a first side and a second side opposite to each other. A plurality of scanning lines and a plurality of data lines are arranged on the substrate and are interlaced with each other. A plurality of pixel structures are disposed on the substrate, and are electrically connected to a plurality of scanning lines and a plurality of data lines. The first gate driving circuit is disposed on a first side of the substrate. The second gate driving circuit is disposed on the second side of the substrate, wherein the first gate driving circuit and the second gate driving circuit are electrically connected to a plurality of scanning lines. The first transmission circuit board has a plurality of first pins, and one of the first pins of the plurality of first pins is electrically connected to the first gate driving circuit. The second transmission circuit board has a plurality of second pins, and one of the plurality of second pins is electrically connected to the control circuit board. The first flexible circuit board is connected between a plurality of first pins of the first transmission circuit board and a plurality of second pins of the second transmission circuit board, and has a plurality of conductive structures. A conductive structure of the plurality of conductive structures of the first flexible circuit board is connected between the first pin of the first transmission circuit board and the second pin of the second transmission circuit board with a disconnection portion. Alternatively, a conductive structure of the plurality of conductive structures of the first flexible circuit board is electrically connected to one of the first pins of the first transmission circuit board and the second pins of the second transmission circuit board, and is electrically isolated. The other of the first pin of the first transmission circuit board and the second pin of the second transmission circuit board.

In an embodiment of the present invention, the conductive structure of the first flexible circuit board includes a first conductive pad and a first wire. The first pin of the first transmission circuit board is connected. The first wire is electrically connected to the first conductive pad, wherein the first wire of the conductive structure of the first flexible circuit board is separated from the second pin of the second transmission circuit board.

In an embodiment of the present invention, the first flexible circuit board further includes a flexible substrate having a first end and a second end that overlap with the first transmission circuit board and the second transmission circuit board, respectively. A plurality of conductive structures are not provided on a part of the second end of the flexible substrate.

In an embodiment of the present invention, the conductive structure of the first flexible circuit board is a first conductive structure having a plurality of conductive structures. The first conductive structure includes a first conductive structure separated from a second pin of the second transmission circuit board. wire. The second conductive structures of the plurality of conductive structures include a second conductive pad connected to the second pin of the second transmission circuit board and a second wire electrically connected to the second conductive pad. The first flexible circuit board further includes a transition pattern interleaved with the first and second wires, and the first and second wires are electrically connected through the transition pattern.

In an embodiment of the present invention, the first flexible circuit board includes a flexible substrate having a first end overlapping the first transmission circuit board, a second end overlapping the second transmission circuit board, and being connected to the first end. And the second end. The conductive structure includes a first conductive pad overlapping the first pin of the first transmission circuit board or a second conductive pad overlapping the second pin of the second transmission circuit board, and the transmission portion of the flexible substrate is not provided. Multiple conductive structures.

In an embodiment of the present invention, the conductive structure includes a first conductive structure. A pad, a second conductive pad, and a lead. The first conductive pad is connected to the first pin of the first transmission circuit board. The second conductive pad is connected to the second pin of the second transmission circuit board. The lead is connected between the first conductive pad and the second conductive pad, wherein the lead has a disconnected portion.

A method for repairing a display device according to an embodiment of the present invention includes the following steps: providing a substrate, the substrate having opposite first and second sides; and forming a plurality of scan lines, a plurality of data lines, and a plurality of pixel structures on the substrate A first gate driving circuit and a second gate driving circuit, in which a plurality of scanning lines and a plurality of data lines are staggered with each other, a plurality of pixel structures are electrically connected to a plurality of scanning lines and a plurality of data lines, and the first gate The gate driving circuit and the second gate driving circuit are respectively disposed on the first side of the substrate and the second side of the substrate, and the first gate driving circuit and the second gate driving circuit are electrically connected to a plurality of scanning lines; A transmission circuit board having a plurality of first pins, and one first pin of the plurality of first pins is electrically connected to the first gate driving circuit; a control circuit board is provided; and a second transmission circuit board is provided. Two second pins, one second pin of the plurality of second pins is electrically connected to the control circuit board; a first flexible circuit board is provided with a plurality of conductive structures, wherein the plurality of conductive structures of the first flexible circuit board Conductive junction A second pin connected between the first transmission circuit board first pin and the second transmission circuit board; when the display means displays abnormal, the cut-off portion is formed of a conductive structure.

A method for repairing a display device according to an embodiment of the present invention includes the following steps: providing a substrate, the substrate having opposite first and second sides; and forming a plurality of scan lines, a plurality of data lines, and a plurality of pixel structures on the substrate The first gate driving circuit starts with And a second gate driving circuit, in which a plurality of scanning lines and a plurality of data lines are staggered with each other, a plurality of pixel structures are electrically connected to a plurality of scanning lines and a plurality of data lines, and the first gate driving circuit and the second gate The pole driving circuits are respectively disposed on the first side of the substrate and the second side of the substrate, and the first gate driving circuit and the second gate driving circuit are electrically connected to a plurality of scanning lines; a first transmission circuit board is provided, which has multiple First pins, one first pin of the plurality of first pins is electrically connected to the first gate driving circuit; a control circuit board is provided; a second transmission circuit board is provided, having a plurality of second pins, and more A second pin of each of the second pins is electrically connected to the control circuit board; a first flexible circuit board is provided with a plurality of conductive structures, wherein one conductive structure of the plurality of conductive structures of the first flexible circuit board is connected to the first circuit board; Between the first pin of a transmission circuit board and the second pin of the second transmission circuit board; when the display device displays an abnormality, remove the first flexible circuit from the first transmission circuit board and the second transmission circuit board Plate, and make repairs another The opposite first and second ends of the first flexible circuit board are connected to the plurality of first pins of the first transmission circuit board and the plurality of second pins of the second transmission circuit board, of which the other for repair One conductive structure of the plurality of conductive structures of the first flexible circuit board is electrically connected to one of the first pins of the first transmission circuit board and the second pins of the second transmission circuit board and is electrically isolated from the first The other of the first pin of the transmission circuit board and the second pin of the second transmission circuit board.

Based on the above, in the display device and the repair method thereof according to the embodiments of the present invention, the first flexible circuit board connected between the first transmission circuit board and the second transmission circuit board is repaired, and the repair method is based on the first soft circuit. A break is formed on the board, or another first flexible circuit is removed for repairing the original first flexible circuit board The board is connected to the first transmission circuit board and the second transmission circuit board, wherein a conductive structure of another first flexible circuit board for repair is electrically insulated from one of the first transmission circuit board and the second transmission circuit board. Thereby, the display device can be driven by the first gate driving circuit and the second gate driving circuit to drive a plurality of scanning lines at the same time in a bilateral driving mode, and the display device can be repaired to a single side where the plurality of scanning lines are driven by the second gate driving circuit. Driven mode. Compared to repairing directly on the first gate driving circuit or the first transmission circuit board, repairing on the first flexible circuit board or replacing the original first flexible circuit board with another first flexible circuit for repairing The board is relatively simple and can also effectively reduce the repair time of the display device and improve the repair yield of the display device.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

100‧‧‧ display device

110‧‧‧ substrate

110a‧‧‧first side

110b‧‧‧second side

121‧‧‧first gate drive circuit

122‧‧‧Second gate driving circuit

131‧‧‧The first transmission circuit board

131b‧‧‧First buckle

131p‧‧‧first pin

132‧‧‧Second transmission circuit board

132b‧‧‧Second snap

132p‧‧‧second pin

133‧‧‧Third transmission circuit board

134‧‧‧Fourth transmission circuit board

140‧‧‧Control circuit board

151, 151 ’, 151 ″ ‧‧‧ the first flexible circuit board

151c‧‧‧Wire

151c1‧‧‧First wire

151c2‧‧‧Second Lead

151s‧‧‧flexible substrate

151sa‧‧‧First end

151sb‧‧‧ second end

151sc‧‧‧Transmission Department

151a, 151a1, 151a2‧‧‧ the first conductive pad

151b, 151b1, 151b2‧‧‧Second conductive pad

152‧‧‧Second flexible circuit board

C‧‧‧ conductive structure

C1‧‧‧First conductive structure

C2‧‧‧Second conductive structure

Cd, Cd1, Cd2‧‧‧ disconnected

T, T1, T2 ‧‧‧ transfer pattern

161‧‧‧The first flexible package

162‧‧‧Second flexible package

163‧‧‧Third flexible package

164‧‧‧The fourth flexible package

170‧‧‧Connector

A‧‧‧ local area

DL‧‧‧Data Line

SL‧‧‧scan line

P‧‧‧ pixel structure

FIG. 1 is a schematic diagram of a display device according to an embodiment of the invention.

FIG. 2 is an enlarged schematic diagram of a first flexible circuit board, a portion of a first transmission circuit board, and a portion of a second transmission circuit board according to an embodiment of the present invention.

FIG. 3 is an enlarged schematic diagram of a first flexible circuit board, a portion of a first transmission circuit board, and a portion of a second transmission circuit board according to another embodiment of the present invention.

FIG. 4 is an enlarged schematic view of a first flexible circuit board, a portion of a first transmission circuit board, and a portion of a second transmission circuit board according to another embodiment of the present invention.

FIG. 1 is a schematic diagram of a display device according to an embodiment of the invention. FIG. 2 is an enlarged schematic diagram of a first flexible circuit board, a portion of a first transmission circuit board, and a portion of a second transmission circuit board according to an embodiment of the present invention. FIG. 2 corresponds to a partial area A of the display device 100 of FIG. 1. Please refer to FIGS. 1 and 2. In this embodiment, the display device 100 includes a substrate 110, a plurality of scan lines SL, a plurality of data lines DL, a plurality of pixel structures P, a first gate driving circuit 121, and a second The gate driving circuit 122, the first transmission circuit board 131, the second transmission circuit board 132, the control circuit board 140, and the first flexible circuit board 151. The substrate 110 has a first side 110a and a second side 110b opposite to each other. For example, in this embodiment, the first side 110 a may be the left side of the substrate 110, and the second side 110 b may be the right side of the substrate 110. However, the present invention is not limited thereto. In other embodiments, the first side 110 a may be the right side of the substrate 110, and the second side 110 b may also be the left side of the substrate 110.

In this embodiment, the substrate 110 is provided with a plurality of scanning lines SL and a plurality of data lines DL interlaced with each other. The multiple scan lines SL and multiple data lines DL can define multiple pixel regions (not labeled). For example, in this embodiment, each pixel region may be an area surrounded by the scan lines SL and the data lines DL adjacent to each other, but the present invention is not limited thereto. The plurality of pixel structures P are respectively disposed in a plurality of pixel regions of the substrate 110 and are electrically connected to the plurality of scanning lines SL and the plurality of data lines DL. For example, in this embodiment, each pixel structure P may include a thin film transistor (not shown) and a pixel electrode (not shown), wherein the thin film transistor (not shown) of each pixel structure P The control terminal (not shown) is electrically connected to the scanning line SL. One end (not labeled) is electrically connected to the data line DL, and the second end (not labeled) of each pixel structure P is electrically connected to the pixel electrode.

In this embodiment, another substrate (not shown) and a display medium (such as, but not limited to, a liquid crystal and an organic light emitting diode) located between the substrate 110 and the other substrate may be disposed opposite to the substrate 110. Or a micro-light-emitting diode (not shown) to form a display panel with the substrate 110. However, in order to clearly show the scanning lines SL, the data lines DL, the pixel structure P, and the first gate driving circuit 121, the second gate driving circuit 122, the first transmission circuit board 131, and the second transmission circuit board in FIG. For the connection relationship of components such as 132, the illustration of the other substrate and the display medium is omitted.

In this embodiment, the first gate driving circuit 121 is disposed on the first side 110a of the substrate 110, the second gate driving circuit 122 is disposed on the second side 110b of the substrate 110, and the first gate driving circuit 121 and the first gate driving circuit 121 The two gate driving circuits 122 are electrically connected to the plurality of scanning lines SL. In this embodiment, the first gate driving circuit 121 and the second gate driving circuit 122 may be formed together with the pixel structure P. That is, the first gate driving circuit 121 and the second gate driving circuit 122 may be gate driver on array (GOA) circuits, but the present invention is not limited thereto.

In this embodiment, the first transmission circuit board 131 has a plurality of first pins 131p (shown in FIG. 2), and at least one of the plurality of first pins 131p is electrically connected to the first gate driving circuit. 121. The second transmission circuit board 132 has a plurality of second pins 132 p (shown in FIG. 2). At least one of the plurality of second pins 132 p is electrically connected to the control circuit board 140. For example, the first pins 131p1 and 131p2 can be electrically connected to the first gate driving circuit 121, and the second pins 132p1 and 132p2 can be electrically connected To the control circuit board 140, and the other plurality of first pins 131p may be selectively electrically connected to the first gate driving circuit 121 and / or the plurality of data lines DL, and the other plurality of second pins 132p may be It is selectively electrically connected to the control circuit board 140 and / or a plurality of data lines DL. The number of the first pins 131p and the number of the second pins 132p can be set according to actual needs, and are not limited to the number of the first pins 131p and the second pins 132p in the embodiment of FIG. 2.

In this embodiment, the display device 100 may further include a third transmission circuit board 133 and a fourth transmission circuit board 134. The third transmission circuit board 133 has a plurality of third pins (not shown), and at least one of the plurality of third pins is electrically connected to the second gate driving circuit 122. The fourth transmission circuit board 134 has a plurality of fourth pins (not shown), and at least one of the plurality of fourth pins is electrically connected to the control circuit board 140.

In this embodiment, the display device 100 may further include a first flexible package 161, a second flexible package 162, a third flexible package 163, a fourth flexible package 164, and a connecting member 170. The first flexible package 161 is connected between the substrate 110 and the first transmission circuit board 131, and is electrically connected to a plurality of data lines DL and the first gate driving circuit 121. The second flexible package 162 is connected between the substrate 110 and the second transmission circuit board 132, and is electrically connected to a plurality of data lines DL. The third flexible circuit board 163 is connected to the substrate 110 and the third transmission circuit board 133, and is electrically connected to a part of the plurality of data lines DL and the second gate driving circuit 122. The fourth flexible package 164 is connected between the substrate 110 and the fourth transmission circuit board 134, and is electrically connected to some of the data lines DL. The first flexible package 161, the second flexible package 162, the third flexible package 163, and / or the fourth flexible package 164 are, for example, Chip on film (COF), but the invention is not limited to this. The connecting member 170 is connected between the control circuit board 140 and the second transmission circuit board 132 and between the control circuit board 140 and the fourth transmission circuit board 134. The connecting member 170 is, for example, multiple cables, but the present invention is not limited thereto.

In this embodiment, the first flexible circuit board 151 is connected between a plurality of first pins 131 p of the first transmission circuit board 131 and a plurality of second pins 132 p of the second transmission circuit board 132. For example, the first transmission circuit board 131 may be selectively disposed on the first buckle 131b on the plurality of first pins 131p, and the first end 151sa of the first flexible circuit board 151 may use the first buckle 131b and The plurality of first pins 131p are connected; the second transmission circuit board 132 may be selectively disposed on the second buckles 132b on the plurality of second pins 132p, and the second end 151sb of the first flexible circuit board 151 may use the first The two buckles 132b are connected to the plurality of second pins 132p. However, the present invention is not limited to this. According to other embodiments, the first flexible circuit board 151 may use other appropriate methods to communicate with the plurality of first pins 131p of the first transmission circuit board 131 and the plurality of second transmission circuit boards 132. The second pin 132p is connected.

In this embodiment, the display device 100 further includes a second flexible circuit board 152. The second flexible circuit board 152 is connected to a plurality of third pins of the third transmission circuit board 133 and a plurality of first pins of the fourth transmission circuit board 134. There are multiple conductive structures (not shown) between the four pins. In this embodiment, a plurality of electrical signals (not shown) output by the control circuit board 140 may be transmitted to the first gate driving circuit 121 and other electrical signals may be transmitted to the second gate. Driving circuit 122. That is, the control circuit board 140 may be selectively connected to the first gate driving circuit 121 and / or the second gate The driving circuit 122 is electrically connected.

In this embodiment, the display device 100 may not be limited to having the first transmission circuit board 131, the second transmission circuit board 132, the third transmission circuit board 133, the fourth transmission circuit board 134, the first flexible circuit board 151, and the second flexible circuit board. Circuit board 152. In other embodiments, the number of flexible circuit boards and the number of transmission circuit boards may be selectively increased or decreased according to the size of the display device 100, which is not limited in the present invention.

Referring to FIG. 2, the first flexible circuit board 151 has a plurality of conductive structures C. In this embodiment, the plurality of conductive structures C include a plurality of first conductive pads 151a, a plurality of second conductive pads 151b, and a plurality of wires 151c. The plurality of first conductive pads 151 a are electrically connected to the plurality of first pins 131 p of the first transmission circuit board 131. The plurality of second conductive pads 151 b are electrically connected to the plurality of second pins 132 p of the second transmission circuit board 132. The plurality of wires 151c are connected between the plurality of first conductive pads 151a and the plurality of second conductive pads 151b. In this embodiment, the number of the first conductive pads 151a, the second conductive pads 151b, and the wires 151c can be set according to actual needs. Generally speaking, the number of the first conductive pads 151a is the same as that of the first pins. The number of 131p and the number of the second conductive pads 151b are the same as the number of the second pins 132p. However, the present invention is not limited to this. In other embodiments, the number of the first conductive pads 151a may be less than the number of 131p of the first pins, and the number of the second conductive pads 151b may be less than the number of the second pins 132p.

In this embodiment, the first flexible circuit board 151 includes a flexible substrate 151s. The flexible substrate 151s has a first end 151sa overlapping with the first buckle 131b of the first transmission circuit board 131 and a first end 151sa overlapping with the second transmission circuit board 132. Two snaps 132b overlap The second end is 151sb. In this embodiment, a plurality of first conductive pads 151a and a plurality of second conductive pads 151b are provided on the first end 151sa and the second end 151sb, respectively. In this embodiment, the first buckle 131b and the second buckle 132b have a buckle design (not shown), and the first end 151sa and the second end 151sb of the first flexible circuit board 151 can be connected through the buckle design. Respectively fixed in the first buckle 131b and the second buckle 132b, so that a plurality of first conductive pads 151a are electrically connected to a plurality of first pins 131p of the first transmission circuit board 131, and a plurality of first The two conductive pads 151 b are electrically connected to the plurality of second pins 132 p of the second transmission circuit board 132. That is, when the first flexible circuit board 151 needs to be replaced, the first end 151sa and the second end 151sb of the first flexible circuit board 151 can be directly replaced by the first snap 131b and the second snap through the snap-in design. Removed in 132b.

In detail, in this embodiment, the plurality of conductive structures C include a first conductive structure C1, a second conductive structure C2, and a disconnection portion Cd. The first conductive structure C1 is connected between the first pin 131p1 of the first transmission circuit board 131 and the second pin 132p1 of the second transmission circuit board 132 and has a disconnection portion Cd1. The second conductive structure C2 is connected between the first pin 131p2 of the first transmission circuit board 131 and the second pin 132p2 of the second transmission circuit board 132 and has a disconnection portion Cd2. Specifically, in this embodiment, the first conductive structure C1 includes a first conductive pad 151a1, a second conductive pad 151b1, a first wire 151c1, and a disconnection portion Cd1. The second conductive structure C2 includes a first conductive pad 151a2, a second conductive pad 151b2, a second conductive wire 151c2, and a disconnection portion Cd2. In this embodiment, the first conductive pads 151a1 and 151a2 are electrically connected to the first pins 131p1 and 131p2 of the first transmission circuit board 131, respectively, and the second conductive pad The pads 151b1 and 151b2 are electrically connected to the first pins 132p1 and 132p2 of the second transmission circuit board 132 respectively, and the first wire 151c1 is connected between the first conductive pad 151a1 and the second conductive pad 151b1 and is disconnected The portion Cd1 is disconnected, and the second wire 151c2 is connected between the first conductive pad 151a2 and the second conductive pad 151b2 and is disconnected by the disconnected portion Cd2. In this embodiment, the position where the disconnected portion Cd is disposed on the first flexible circuit board 151 can be adjusted according to actual needs, and the position where the disconnected portion Cd is disposed is not limited to FIG. 2.

In this embodiment, the conductive structure C further includes a plurality of transition patterns T, wherein the plurality of transition patterns T include the transition patterns T1 and T2. The transfer pattern T1 is staggered and electrically connected to the first conductive line 151c1 and the second conductive line 151c2. The transfer pattern T2 is staggered and electrically connected to the second conductive line 151c2 and another conductive line 151c different from the first conductive line 151c1. In this embodiment, the number of the plurality of transfer patterns T may be increased or decreased according to actual needs, and the connection relationship of the transfer patterns T may be adjusted according to actual needs, which is not limited in the present invention. The disconnected portion Cd and the transfer pattern T are formed when an abnormality is displayed on the display device 100 (for example, an array of pixel areas parallel to the scanning line SL displays an abnormality near the first side 110a of the substrate 110). Repair the display device 100. For example, the mechanism of repairing the display device 100 is as follows.

When the display device 100 displays an abnormality, the disconnection portion Cd and the transition pattern T are formed. The second lead 151c2 disconnected by the disconnected portion Cd2 can be electrically connected to the first lead 151c1 through the transfer pattern T1, so that the electrical signals input to the second pin 132p2 can be sequentially passed through the second conductive pad 151b2 , The second wire 151c2, the transfer pattern T1, the first wire 151c1, the first conductive pad 151a1, and the first pin 131p1. It is then transmitted to the first gate driving circuit 121. However, the electrical signal input to the second pin 132p1 is electrically isolated from the first conductive pad 151a1 of the first conductive structure C1 due to the disconnection portion Cd1, and cannot be transmitted to the first gate driving circuit 121. That is, when the display device 100 displays an abnormality, a disconnection portion Cd is formed in the wire structure C of the first flexible circuit board 151, so that the electrical signal of the control circuit board 140 for driving the first gate driving circuit 121 is not changed. It is transmitted to the first gate driving circuit 121 and the control circuit board 140 drives the second gate driving circuit 122. That is, the display device 100 is changed from the bilateral driving mode to the unilateral driving mode, so that the display device 100 resumes normal display.

In addition, the present embodiment describes only an exemplary repair method when an abnormality is displayed near the first side 110 a of the substrate 110 of the display device 100. Similarly, the repair method when the abnormality is displayed near the second side 110b of the substrate 110 is similar to the repair method of the abnormality displayed on the first side 110a. Those skilled in the art can implement this after referring to this embodiment. I won't go into details here.

FIG. 3 is an enlarged schematic diagram of a first flexible circuit board, a portion of a first transmission circuit board, and a portion of a second transmission circuit board according to another embodiment of the present invention. FIG. 3 corresponds to a partial area A of the display device 100 of FIG. 1. Please refer to FIG. 1 and FIG. 3 at the same time. In this embodiment, the same components in the first flexible circuit board 151 ′ and the first flexible circuit board 151 in FIG. 2 will not be described in detail. The different technical features of the circuit board 151 will be described. In this embodiment, the first flexible circuit board 151 ′ has one of the plurality of conductive structures C and is electrically connected to the first pin 131 p of the first transmission circuit board 131 and the second connection of the second transmission circuit board 132. One of the pins 132p, and is electrically isolated from the first pin 131p and the second pin of the first transmission circuit board 131 The other of the second pins 132p of the transmission circuit board 132.

In detail, in this embodiment, the plurality of conductive structures C of the first flexible circuit board 151 'include a first conductive structure C1 and a second conductive structure C2. The first conductive structure C1 includes a first conductive pad 151a1 and a first wire 151c1, and the second conductive structure C2 includes a first conductive pad 151a2, a second conductive pad 151b2, and a second wire 151c2. The first conductive pad 151a1 of the first conductive structure C1 is electrically connected to the first pin 131p1 of the first transmission circuit board 131. The first conductive structure C1 does not have the second conductive pad 151b and is electrically isolated from the second pin 132p1 of the second transmission circuit board 132. The first lead 151c1 is separated from the second pin 132p1 of the second transmission circuit board 132. The first conductive pad 151a2 of the second conductive structure C2 is electrically connected to the first pin 131p2 of the first transmission circuit board 131, and the second conductive pad 151b2 of the second conductive structure C2 is electrically connected to the second transmission circuit. The second pin 132p2 of the board 132, and the second wire 151c2 is electrically connected to the second conductive pad 151b2.

In this embodiment, the conductive structure C further includes a plurality of transition patterns T, wherein the plurality of transition patterns T include the transition patterns T1 and T2. The transfer pattern T1 is staggered and electrically connected with the first conductive line 151c1 and the second conductive line 151c2, and the transfer pattern T2 is staggered and electrically connected with the second conductive line 151c2 and another conductive line 151c different from the first conductive line 151c1. The electrical signal input to the second pin 132p1 cannot be transmitted to the first gate driving circuit 121 through the first flexible circuit board 151 '.

Therefore, when the display device 100 displays an abnormality, the original first flexible circuit board (not shown) may be replaced by the first buckle 131b of the first transmission circuit board 131 and the second buckle 132b of the second transmission circuit board 132. Dismantled inside and replaced as the repair of this embodiment Another complementary first flexible circuit board 151 '(i.e., the state shown in Fig. 3). As a result, the electrical signals used to drive the first gate driving circuit 121 cannot be transmitted to the first gate driving circuit 121, so that the control circuit board 140 drives only the second gate driving circuit 122. That is, the display device 100 is changed from the bilateral driving mode to the unilateral driving mode, so that the display device 100 resumes normal display.

FIG. 4 is an enlarged schematic view of a first flexible circuit board, a portion of a first transmission circuit board, and a portion of a second transmission circuit board according to another embodiment of the present invention. FIG. 4 corresponds to a partial area A of the display device 100 of FIG. 1. Please refer to FIG. 1 and FIG. 4 at the same time. In this embodiment, the same components in the first flexible circuit board 151 ″ as in the first flexible circuit board 151 in FIG. 2 will not be described in detail. The different technical features of the circuit board 151 will be described.

When the display device 100 displays an abnormality, the original first flexible circuit board (not shown) may be removed from the first buckle 131b of the first transmission circuit board 131 and the second buckle 132b of the second transmission circuit board 132. Except, replace the first flexible circuit board 151 "(ie, the state shown in Fig. 4) for repair in this embodiment. Specifically, in this embodiment, the first flexible circuit board 151" includes a flexible substrate 151s, The flexible substrate 151s has a first end 151sa overlapping the first transmission circuit board 131, a second end 151sb overlapping the second transmission circuit board, and a transmission portion 151sc connected between the first end 151sa and the second end 151sb. In addition, the first lead 151c1 of the first conductive structure C1 of the conductive structure C is not provided on the transmission portion 151sc of the flexible substrate 151s. Since the first wire 151c1 is not provided on the first flexible circuit board 151 ", the electric signal inputted to the second pin 132p1 cannot be transmitted to the first gate driving circuit 121, and the control circuit The circuit board 140 drives the second gate driving circuit 122. That is, the display device 100 is changed from the bilateral driving mode to the unilateral driving mode, so that the display device 100 resumes normal display.

In summary, in the display device and the repair method thereof according to the embodiments of the present invention, the first flexible circuit board connected between the first transmission circuit board and the second transmission circuit board is repaired, and the repair method is based on the first A disconnection is formed on the flexible circuit board, or the original first flexible circuit board is removed and the conductive structure of another first flexible circuit board for repair is electrically insulated from the first transmission circuit board and the second transmission circuit board One of them. Thereby, the display device can be driven by the first gate driving circuit and the second gate driving circuit to drive a plurality of scanning lines at the same time in a bilateral driving mode, and the display device can be repaired to a single side where the plurality of scanning lines are driven by the second gate driving circuit. Driven mode. Compared to repairing directly on the first gate driving circuit or the first transmission circuit board, repairing on the first flexible circuit board or replacing the original first flexible circuit board with another first flexible circuit for repairing The board is relatively simple, which can also effectively reduce the repair time of the display device, and at the same time improve the repair yield of the display device.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

Claims (8)

A display device includes: a substrate having a first side and a second side opposite to each other; a plurality of scanning lines and a plurality of data lines disposed on the substrate and interlaced with each other; a plurality of pixel structures disposed on The substrate is electrically connected to the scanning lines and the data lines. A first gate driving circuit and a second gate driving circuit are respectively disposed on the first side of the substrate and the substrate. The second side is electrically connected to the scan lines; a first transmission circuit board having a plurality of first pins, wherein a first pin of the first pins is electrically connected to the first gate; Pole driving circuit; a control circuit board; a second transmission circuit board having a plurality of second pins, wherein a second pin of the second pins is electrically connected to the control circuit board; a first soft The circuit board is connected between the first pins of the first transmission circuit board and the second pins of the second transmission circuit board, and has a plurality of conductive structures; wherein the first flexible circuit board A conductive structure of the conductive structures is connected to the first pass There is a disconnection between the first pin of the circuit board and the second pin of the second transmission circuit board; or, a conductive structure of the conductive structures of the first flexible circuit board is electrically connected One of the first pin of the first transmission circuit board and the second pin of the second transmission circuit board is electrically isolated from the first pin of the first transmission circuit board and the second pin of the first transmission circuit board. The other of the second pins of the second transmission circuit board. The display device according to item 1 of the scope of patent application, wherein the conductive structure of the first flexible circuit board includes: a first conductive pad connected to the first pin of the first transmission circuit board; and The first wire is electrically connected to the first conductive pad, wherein the first wire of the conductive structure of the first flexible circuit board is separated from the second pin of the second transmission circuit board. The display device according to item 2 of the scope of patent application, wherein the first flexible circuit board further comprises: a flexible substrate having a first end and a first end overlapping the first transmission circuit board and the second transmission circuit board, respectively; A second end; the conductive structures are not provided on a part of the second end of the flexible substrate. The display device according to item 1 of the scope of patent application, wherein the conductive structure of the first flexible circuit board is a first conductive structure of the conductive structures, and the first conductive structure includes the first conductive structure and the second transmission circuit board. A first wire separated by the second pin; a second conductive structure of the conductive structures includes a second conductive pad connected to the second pin of the second transmission circuit board and the second conductive A second wire electrically connected to the pad; the first flexible circuit board further includes a transition pattern interleaved with the first wire and the second wire, and the first wire and the second wire pass through the transition pattern Electrical connection. The display device according to item 1 of the scope of patent application, wherein the first flexible circuit board comprises: a flexible substrate having a first end overlapping the first transmission circuit board, and a first substrate overlapping the second transmission circuit board. A second end and a transmission part connected between the first end and the second end; wherein the conductive structure includes a first conductive pad overlapping the first pin of the first transmission circuit board Or a second conductive pad overlapped with the second pin of the second transmission circuit board, and the conductive portions of the flexible substrate are not provided with the conductive structures. The display device according to item 1 of the patent application scope, wherein the conductive structure comprises: a first conductive pad connected to the first pin of the first transmission circuit board; a second conductive pad connected to the first The second pin connection of the second transmission circuit board; and a wire connected between the first conductive pad and the second conductive pad, wherein the wire has the disconnection portion. A method for repairing a display device includes: providing a substrate having a first side and a second side opposite to each other; forming a plurality of scanning lines, a plurality of data lines, a plurality of pixel structures, and a plurality of pixel structures on the substrate; A first gate driving circuit and a second gate driving circuit, wherein the scan lines and the data lines are interleaved with each other, the pixel structures are electrically connected to the scan lines and the data lines, and The first gate driving circuit and the second gate driving circuit are respectively disposed on the first side of the substrate and the second side of the substrate. The first gate driving circuit and the second gate driving circuit are connected to the first gate driving circuit and the second gate driving circuit. The scan lines are electrically connected; a first transmission circuit board is provided with a plurality of first pins, and a first pin of the first pins is electrically connected to the first gate driving circuit; a control is provided A circuit board; providing a second transmission circuit board having a plurality of second pins, a second pin of the second pins is electrically connected to the control circuit board; providing a first flexible circuit board having multiple Conductive structures, wherein the first flexible circuit board A conductive structure of the conductive structures is connected between the first pin of the first transmission circuit board and the second pin of the second transmission circuit board; when the display device displays an abnormality, the conductive structure is formed A broken section. A method for repairing a display device includes: providing a substrate having a first side and a second side opposite to each other; forming a plurality of scanning lines, a plurality of data lines, a plurality of pixel structures, and a plurality of pixel structures on the substrate; A first gate driving circuit and a second gate driving circuit, wherein the scan lines and the data lines are interleaved with each other, the pixel structures are electrically connected to the scan lines and the data lines, and The first gate driving circuit and the second gate driving circuit are respectively disposed on the first side of the substrate and the second side of the substrate. The first gate driving circuit and the second gate driving circuit are connected to the first gate driving circuit and the second gate driving circuit. The scan lines are electrically connected; a first transmission circuit board is provided with a plurality of first pins, and a first pin of the first pins is electrically connected to the first gate driving circuit; a control is provided A circuit board; providing a second transmission circuit board having a plurality of second pins, a second pin of the second pins is electrically connected to the control circuit board; providing a first flexible circuit board having multiple Conductive structures, wherein the first flexible circuit board A conductive structure of the conductive structures is connected between the first pin of the first transmission circuit board and the second pin of the second transmission circuit board. When the display device displays an abnormality, The first flexible circuit board is removed from the transmission circuit board and the second transmission circuit board, and a first end and a second end of the other first flexible circuit board for repair are respectively connected to the first transmission The first pins of the circuit board and the second pins of the second transmission circuit board are connected, wherein a conductive structure of the plurality of conductive structures of the other first flexible circuit board for repair is electrically connected to One of the first pin of the first transmission circuit board and the second pin of the second transmission circuit board is electrically isolated from the first pin of the first transmission circuit board and the second pin The other of the second pins of the transmission circuit board.