TWI815644B - Display device - Google Patents

Abstract

A display device includes a substrate, a first wiring layer, a second wiring area, an alignment film, and a frame sealant. The substrate includes a display area and a wiring area. The display area is located at a center of the substrate. The wiring area is located adjacent to the display area and an edge area of the substrate. The first wiring layer is located on the wiring area and includes first wires. The second wiring layer is located over the first wiring layer and includes second wires. Each of the second wires have at least one opening. The openings located on two adjacent second wires are arranged dislocated to each other. The alignment film covers the display area. The frame sealant is located adjacent to a side of the wiring area which is away from the display area.

Description

display device

The present disclosure relates to a display device.

With the development of display technology, liquid crystal display devices are used in various display devices, such as mobile phones, televisions, computers, etc. The liquid crystal display device includes an opposing color filter substrate, an array substrate, and a liquid crystal layer between the two substrates. The liquid crystal display device can control the alignment direction of the liquid crystal molecules in the liquid crystal layer through the array substrate. The array substrate has a display area and a non-display area surrounding the display area. The non-display area includes a conductor area having a plurality of conductors and a sealing frame area for packaging the liquid crystal display device.

However, the sealing material used to encapsulate the liquid crystal display device contacts the liquid crystal layer, causing air and water vapor to enter the display area, thereby affecting the display effect of the liquid crystal display device.

Therefore, how to propose a display device that can solve the above problems is one of the problems that the industry is currently eager to invest in research and development resources to solve.

In view of this, one purpose of the present disclosure is to provide a display device that can effectively solve the above problems.

The present disclosure relates to a display device including a substrate, a first conductor layer, a second conductor layer, an alignment film and a frame sealant. The substrate includes a display area and a wire area. The display area is located in the central area of the substrate. The wire area is adjacent to the display area and located at the edge area of the substrate. The first conductive layer is located on the conductive area and contains the first conductive line. The second conductive layer is located on the first conductive layer and contains the second conductive line. Each second conductor contains an opening. The openings in two adjacent ones of the second conductive lines are offset from each other. The alignment film covers the display area. The frame sealant is disposed adjacent to the side of the wire area away from the display area.

In some current implementations, the second wire extends along the first direction. The number of openings in the second conductor is plural. Two adjacent openings in one of the second conductors have a first spacing in the first direction, and the other two adjacent openings in the two adjacent second conductors have a second spacing in the first direction. . The first spacing is greater than the second spacing.

In some current implementations, the second spacing is greater than the opening length of each opening.

In some current implementations, the first wire connections form a grid-like structure.

In some current implementations, at least a portion of the first conductive line and the second conductive line are aligned with each other in a top view.

In some current implementations, the second wire extends along the first direction. Non-adjacent openings in the second conductor are arranged along a second direction perpendicular to the first direction.

In some current implementations, at least one of the second conductive lines is interposed between openings of two non-adjacent ones of the second conductive lines along the second direction.

In some current implementations, the second conductor is divided by the opening into a plurality of line segments that are disconnected from each other.

In some current implementations, the alignment film and the frame sealant respectively cover a part of the conductor area but are separated from each other.

In some current implementations, the alignment film covers a portion of the first conductive layer but does not cover the second conductive layer. The alignment film passes through the opening of the portion.

To sum up, in the display device of the present disclosure, blocking obstacles (for example, second conductive lines and openings therein) are appropriately provided in the conductive line area around the display area to prevent the alignment film from interfering with the other side of the conductive line area. of frame sealant contact. Specifically, the double-layer conductor structure composed of the first conductor layer and the second conductor layer in the conductor area, combined with the periodically arranged openings, can evenly distribute the flow path of the alignment film, so that the alignment film can be evenly distributed on the conductor lines. area, and divert the flow to multiple openings located in the wire area to reduce the possibility of the alignment film converging and contacting the frame sealant. Furthermore, the openings in the second conductor layer are arranged in a staggered manner, which will help extend the flow path distance of the alignment film in the conductor area and also help reduce the possibility of the alignment film contacting the frame sealant. In addition, the arrangement period of the openings in the second conductive layer is appropriately defined by the first pitch, the second pitch, and the third pitch, which can reduce the surface area of the second conductive layer and avoid static electricity accumulated in the second conductive layer. The charge affects the electrical signal transmission on the first conductor layer.

The following disclosure provides many different embodiments or examples for implementing different features of the provided subject matter. Specific examples of components and arrangements are described below to simplify the present disclosure. Of course, these are examples only and are not intended to be limiting. For example, the following description where a first feature is formed on or on a second feature may include embodiments in which the first feature and the second feature are formed in direct contact, and may also include embodiments in which additional features may be Embodiments are formed between a first feature and a second feature such that the first feature and the second feature may not be in direct contact. Additionally, the present disclosure may repeat reference symbols and/or letters in various instances. This repetition is for simplicity and clarity and does not in itself represent a relationship between the various embodiments and/or configurations discussed.

In addition, for simplicity of description, spatially relative terms such as "below", "below", "lower", "above", "upper" and similar terms may be used herein. Describe the relationship of one element or feature to another (additional) element or feature as illustrated in the figures. These spatially relative terms are intended to encompass different orientations of elements in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As used herein, "about," "approximately," "approximately" or "substantially" generally means falling within twenty percent, within ten percent, or within one hundred percent of a given value or range. Out of five. Numerical quantities given herein are approximations, meaning that terms such as "about," "approximately," "approximately" or "substantially" may be inferred when not expressly stated otherwise.

FIG. 1 is a partial schematic diagram of a display device 100 according to some embodiments of the present disclosure. Referring to FIG. 1 , an embodiment of the present disclosure relates to a display device 100 including a substrate 110 , a first conductor layer 132 , a second conductor layer 134 , an alignment film 140 and a frame sealant 150 . The substrate 110 includes a display area 120 and a conductor area 130 . The display area 120 is located in the central area of the substrate 110 . The wire area 130 is adjacent to the display area 120 and located at the edge area of the substrate 110 . The first conductor layer 132 is located on the conductor area 130 and includes the first conductors 132a, 132b. The second conductive wire layer 134 is located on the first conductive wire layer 132 and includes the second conductive wire 134a. Each second wire 134a includes an opening 134b. The openings 134b located in adjacent two of the second conductive lines 134a are offset from each other. The alignment film 140 covers the display area 120. The sealant 150 is disposed adjacent to the side of the wire area 130 away from the display area 120 . In some embodiments, the alignment film 140 and the sealant 150 respectively cover a part of the conductor area 130 but are separated from each other. In other words, the conductor area 130 is located between the display area 120 and the frame sealant 150, and is used to structurally separate the alignment film 140 and the frame sealant 150.

Figure 2A is a partially enlarged schematic diagram of the conductor area 130. FIG. 2B is a partially enlarged schematic diagram of the first conductive layer 132 . FIG. 2C is a partially enlarged schematic diagram of the first conductor layer 132 and the second conductor layer 134 . Please refer to Figure 1, Figure 2A, Figure 2B and Figure 2C. The first conductor layer 132 and the second conductor layer 134 are located on the conductor area 130 of the substrate 110. The first conductive wire layer 132 includes first conductive wires 132a and 132b. In some embodiments, the first conductor 132a extends along the first direction A1, and the first conductor 132b extends along the second direction A2 that is not parallel to the first direction A1 and is connected to the first conductor 132a. In some embodiments, the first wires 132a and 132b are connected to form a grid-like structure. For example, in a bird's-eye view, there are a first direction A1 and a second direction A2 that are perpendicular to each other. The plurality of first conductive wires 132a extend along the first direction A1, and the plurality of first conductive wires 132b extend along the second direction A2 and are connected with the first conductive wires 132a to form a mesh structure (see Figure 2B). The second conductive wire layer 134 is located on the first conductive wire layer 132 and includes the second conductive wire 134a. The second conductor 134a has an opening 134b therein. Each second conductive line 134a includes an opening 134b, and the openings 134b located in two adjacent second conductive lines 134a are staggered with each other. In some embodiments, the second wire 134a is separated into a plurality of line segments that are disconnected from each other by the opening 134b. Furthermore, in the embodiments shown in FIGS. 1 , 2A, 2B and 2C, in a top view, at least a portion of the first conductor 132a and the second conductor 134a are aligned with each other and along the A part of the first conductor 132b extending in the second direction A2 is not covered by the second conductor 134a. In this way, the first conductor layer 132 and the second conductor layer 134 form a double-layer conductor structure in the conductor area 130 .

Figure 3A is a partial cross-sectional side view drawn along the section indicator line 3-3 in Figure 2C. FIG. 3B is a partial cross-sectional side view of another embodiment shown along the cross-section indicator line 3-3 in FIG. 2C. Please refer to Figures 2C, 3A and 3B. In some embodiments (as shown in Figure 3A), there is a spacer layer 160 between the first conductive layer 132 and the second conductive layer 134 to separate them. By. In some embodiments, the spacer layer 160 may be an amorphous silicon layer, but the disclosure is not limited thereto. In some other embodiments (as shown in FIG. 3B ), there is no spacer layer 160 between the first conductive layer 132 and the second conductive layer 134 . Specifically, whether to form the spacer layer 160 depends on the selection of the mask during the process. In the structure of the embodiment shown in FIG. 3A , the same mask can be used to form the spacer layer 160 and the second conductive layer 134 , which will help reduce process steps. On the other hand, the structure of the embodiment in Figure 3B does not have the spacer layer 160, so that the double-layer wire structure composed of the first wire layer 132 and the second wire layer 134 has a better quality factor (Q factor). . The first conductive layer 132 will be used to transmit electrical signals (for example, counting signals), and the second conductive layer 134 will be used to form a barrier structure with openings 134b to inhibit the alignment film 140 from flowing toward the sealant 150 (please refer to Figure 1) .

In some embodiments, there is a dielectric layer 170 between the first conductive layer 132 and the spacer layer 160 . The dielectric layer 170 completely covers the first conductive line layer 132 so that the first conductive line 132a and the spacer layer 160 do not contact each other. Specifically, the dielectric layer 170 may be in the same layer as the gate dielectric layer of the active element located on the display area 120 , and the spacer layer 160 may be in the same layer as the channel layer of the active element located in the display area 120 . After the insulating layer 162 is formed, the dielectric layer 170 and the second conductive layer 134 will be covered by the insulating layer 162 together. Specifically, the insulating layer 162 blanket covers the dielectric layer 170 , the spacer layer 160 and the second conductive layer 134 . In this way, each second conductor 134a is independently separated from each other by the insulating layer 162 . On the other hand, at the opening 134b of the second conductive layer 134, the insulating layer 162 will directly contact the dielectric layer 170.

Please continue to refer to FIG. 1 , FIG. 2C , FIG. 3A and FIG. 3B . In some embodiments, the alignment film 140 covers a part of the first conductive layer 132 but does not cover the second conductive layer 134 . The alignment film 140 passes through part of the opening 134b. When the alignment film 140 flows into the opening 134b (as shown in the right area of FIG. 3A and FIG. 3B ), it will cover the first conductive layer 132 and part of the insulating layer 162 . Subsequently, when the alignment film 140 flows to the adjacent second conductive line layer 134, it will be blocked by the second conductive line 134a, guiding the alignment film 140 to flow along the first direction A1 as shown in FIG. 2C to elongate the alignment film 140. The flow distance prevents the alignment film 140 from contacting the frame sealant 150 .

As shown in the embodiments shown in FIGS. 1 to 2C , the first conductor layer 132 and the second conductor layer 134 form a double-layer conductor structure on the conductor region 130 . At the same time, openings 134b are periodically disposed in the second conductor layer 134 according to rules (details will be described in subsequent paragraphs) to evenly distribute the flow path of the alignment film 140. In this way, the concentration of openings 134b in the conductor area 130 causing the alignment film 140 to flow along a specific path can be further reduced, and the possibility of the alignment film 140 coming into contact with the frame sealant 150 through the conductor area 130 can also be reduced. In addition, as mentioned in the previous paragraph, the second conductive line 134a and the opening 134b located in the second conductive line layer 134 of the double-layer conductive structure form obstacles in the flow path of the alignment film 140, so that the alignment film 140 can only follow the second conductive line. The flow of multiple openings 134b in 134a can further prevent the alignment film 140 from contacting the sealant 150 located on the other side of the conductor area 130. If the alignment film 140 comes into contact with the frame sealant 150 , the effect of the frame sealant 150 in sealing the liquid crystal display device 100 will be reduced. The frame sealant 150 will generate holes, allowing air or water vapor to enter the liquid crystal layer, and form multiple bubble-shaped holes in the display device 100 , affecting the imaging of the display device 100 and reducing the reliability of the liquid crystal display device 100 .

On the other hand, another purpose of providing the plurality of openings 134b in the second conductive layer 134 is to reduce the surface area of the second conductive layer 134. If too few openings 134b are formed on the second conductive line layer 134 or the spacing between each opening 134b is too large, the surface area of the second conductive line layer 134 will be too large, causing excessive static charges to accumulate on the second conductive line layer 134 and thereby affecting the first conductive line. Electrical signals transmitted by layer 132. Therefore, providing a plurality of openings 134b in the second conductive layer 134 can effectively control the amount of charge accumulation in the second conductive layer 134, further reducing the impact of the second conductive layer 134 on the first conductive layer 132 when transmitting electrical signals.

Referring to Figures 2A to 2C, the second wire 134a extends along the first direction A1. The second wire 134a has a plurality of openings 134b, and the opening length L1 of each opening 134b is 50 μm. According to some exemplary embodiments of the present disclosure, the openings 134b are offset from each other according to three different spacings. First, in some embodiments, the second wire 134a extends along the first direction A1. The number of openings 134b in the second conductor 134a is a plurality. Two adjacent openings 134b in one of the second conductive lines 134a have a first distance D1 in the first direction A1, and the other two adjacent openings 134b in the second conductive line 134a are in the second direction A1. A2 has a second distance D2. The first distance D1 is greater than the second distance D2. In some embodiments, the length of the first distance D1 is 9900 μm. In some embodiments, the length of the second distance D2 is 1100 μm. In some embodiments, the second distance D2 is greater than the opening length L1 of each opening 134b. In other words, the first distance D1 will be greater than the second distance D2 and the opening length L1 of the opening 134b. On the other hand, in some embodiments, the second conductive line 134a extends along the first direction A1. The non-adjacent openings 134b in the second conductive lines 134a are arranged along the second direction A2 perpendicular to the first direction A1. Furthermore, in some embodiments, at least one of the second conductive lines 134a is between the openings 134b of two non-adjacent ones of the second conductive lines 134a along the second direction A2. Specifically, the openings 134b in the second conductive line 134a are periodically arranged according to a specific pitch (for example, the third pitch D3) along the second direction A2 (as shown in FIG. 2C). In addition, the openings 134b spaced apart by the third distance D3 in the second direction A2 will be separated by one or more second conductive lines 134a. In some embodiments, the length of the third distance D3 is 250 μm. It should be noted that the third spacing can also be defined according to the number of second conductive lines 134a spaced between the two openings 134b. For example, referring to the embodiment of FIG. 2C , nine second wires 134a are spaced between the openings 134b arranged along the second direction A2. In other words, the openings 134b are disposed in the second direction A2 in such a manner that ten second conductive lines 134a constitute one cycle. However, the present disclosure is not limited to this, and other suitable periodic arrangements can also be used.

In the embodiments shown in FIGS. 2A to 2C , the purpose of staggering the openings 134 b is to increase the difficulty of the alignment film 140 crossing the conductor area 130 . Specifically, in the above embodiment, both the first distance D1 and the second distance D2 are much larger than the opening length L1. The purpose of this design is to increase the distance length of the alignment film 140 through the conductor area 130 in the first direction A1. to prevent the alignment film 140 from contacting the frame sealant 150 located on the other side of the conductor area 130 . Furthermore, nine second wires 134a are spaced between the openings 134b arranged along the second direction A2, so that adjacent openings 134b also have appropriate spacing in the second direction A2 to elongate the path of the alignment film through the wire area 130, It can also prevent the alignment film 140 from contacting the frame sealant 150 on the other side of the conductive area 130.

From the above detailed description of the specific embodiments of the present disclosure, it can be clearly seen that in the display device of the present disclosure, by appropriately arranging blocking obstacles (for example, the second conductive line and the second conductive line) in the conductor area located around the display area opening) to avoid contact between the alignment film and the sealant on the other side of the conductor area. Specifically, the double-layer conductor structure composed of the first conductor layer and the second conductor layer in the conductor area, combined with the periodically arranged openings, can evenly distribute the flow path of the alignment film, so that the alignment film can be evenly distributed on the conductor lines. area, and divert the flow to multiple openings located in the wire area to reduce the possibility of the alignment film converging and contacting the frame sealant. Furthermore, the openings in the second conductor layer are arranged in a staggered manner, which will help extend the flow path distance of the alignment film in the conductor area and also help reduce the possibility of the alignment film contacting the frame sealant. In addition, the arrangement period of the openings in the second conductive layer is appropriately defined by the first pitch, the second pitch, and the third pitch, which can reduce the surface area of the second conductive layer and avoid static electricity accumulated in the second conductive layer. The charge affects the electrical signal transmission on the first conductor layer.

The foregoing summarizes the features of several embodiments so that those skilled in the art can better understand the aspects of the present disclosure. Those skilled in the art should appreciate that they may readily use the present disclosure as a basis for designing or modifying other processes and structures for carrying out the same purposes and/or achieving the same advantages of the embodiments introduced herein. Those skilled in the art should also realize that such equivalent structures do not depart from the spirit and scope of the disclosure, and they can make various changes, substitutions and substitutions herein without departing from the spirit and scope of the disclosure.

100:Display device 110:Substrate 120:Display area 130: Wire area 132: First conductor layer 132a, 132b: first conductor 134: Second wire layer 134a: Second wire 134b:Open your mouth 140:Alignment film 150: Frame sealing glue 160: spacer layer 162:Insulation layer 170: Dielectric layer A1: first direction A2: Second direction D1: first distance D2: second distance D3: The third distance L1: opening length

Aspects of the present disclosure are best understood from the following detailed description when read in conjunction with the accompanying figures. It should be noted that in accordance with standard industry practice, various features are not drawn to scale. In fact, the dimensions of the various features may be arbitrarily increased or reduced for clarity of discussion. Figure 1 is a partial schematic diagram of a display device according to some embodiments of the present disclosure. FIG. 2A is a partially enlarged schematic diagram of the lead area of the display device in FIG. 1 . FIG. 2B is a partially enlarged schematic diagram of the first conductor layer in the conductor area of the display device in FIG. 2A. FIG. 2C is a partially enlarged schematic diagram of the first conductor layer and the second conductor layer in the conductor area of the display device in FIG. 2A. FIG. 3A is a partial cross-sectional side view of the embodiment of FIG. 2C shown along the cross-section indicator line 3-3 in FIG. 2C. Figure 3B is a partial cross-sectional side view of another embodiment of Figure 2C shown along the section indicator line 3-3 in Figure 2C.

Domestic storage information (please note in order of storage institution, date and number) without Overseas storage information (please note in order of storage country, institution, date, and number) without

100:Display device

110:Substrate

120:Display area

130: Wire area

140:Alignment film

150: Frame sealing glue

Claims (9)

A display device includes: a substrate including a display area and a conductor area, the display area is located in a central area of the substrate, the conductor area is adjacent to the display area and located in an edge area of the substrate; a first a conductor layer located on the conductor area and including a plurality of first conductors; a second conductor layer located on the first conductor layer and including a plurality of second conductors, wherein each of the second conductors includes an opening , and the openings located in adjacent two of the second conductors are arranged staggered to each other, wherein in a top view, at least a part of the first conductors and the second conductors are aligned with each other; an alignment film , covering the display area; and a sealant, disposed adjacent to the side of the wire area away from the display area. The display device of claim 1, wherein the second conductive lines extend along a first direction, the number of the openings in each of the second conductive lines is a plurality, and one of the second conductive lines has Two adjacent openings have a first spacing in the first direction, and the other two adjacent openings of the second conductors have a first spacing in the first direction. Two spacings, wherein the first spacing is greater than the second spacing. The display device as claimed in claim 2, wherein the second room The distance is greater than an opening length of each of the openings. The display device of claim 1, wherein the first wires are connected to form a grid structure. The display device of claim 1, wherein the second conductive lines extend along a first direction, and the openings of non-adjacent two of the second conductive lines extend along a first direction perpendicular to the first direction. Arranged in two directions. The display device of claim 5, wherein at least one of the second conductive lines is between the openings of non-adjacent ones of the second conductive lines along the second direction. The display device of claim 1, wherein the second conductors are separated by the openings into a plurality of line segments that are disconnected from each other. The display device of claim 1, wherein the alignment film and the frame sealant respectively cover a part of the conductor area but are separated from each other. The display device of claim 1, wherein the alignment film covers a portion of the first conductive line layer but does not cover the second conductive line layer, and the alignment film passes through the openings in the portion.