TWI425285B - Liquid crystal display panel and thin film transistor substrate thereof - Google Patents

Description

Liquid crystal display panel and thin film transistor substrate thereof

The present invention relates to a liquid crystal display device and a thin film transistor substrate thereof, and more particularly to a liquid crystal display device having a peripheral line and a thin film transistor substrate therefor.

The liquid crystal display panel has the advantages of "light, thin, short, and small", and various electronic devices can easily carry the liquid crystal display panel, and the liquid crystal display panel is gradually becoming the mainstream in the market.

The liquid crystal display panel is mainly composed of a thin film transistor substrate, a color filter substrate and a liquid crystal layer. The liquid crystal layer is disposed between the thin film transistor substrate and the color filter substrate. Since the liquid crystal layer possesses the properties of viscosity, elasticity, and polarizalility, the characteristics of the polarized light are changed when a bias voltage is applied. When the light passes through the liquid crystal layer, it will have different degrees of brightness. When light of different brightness passes through the color filter substrate, a picture can be formed.

The liquid crystal layer seals the liquid crystal layer through the sealant to prevent leakage of the liquid crystal layer. In general, there is no air intrusion into the liquid crystal layer, which will seriously affect the image quality. In particular, when the sealant is placed on a rugged surface, the sealant may not completely adhere to the surface, and the external air pressure may easily utilize the uneven surface to invade the liquid crystal layer. Therefore, the industry is constantly striving to improve the design of the components or the design of the process to reduce the phenomenon of air intrusion into the liquid crystal layer.

The invention relates to a liquid crystal display device and a thin film transistor substrate thereof, which utilizes the design of the surrounding lines, so that the sealant can be disposed on the surrounding circuit with high and low unevenness, and the phenomenon that air invades the liquid crystal layer can be effectively prevented.

According to a first aspect of the invention, a liquid crystal display panel is proposed. The liquid crystal display panel comprises a thin film transistor substrate, a color filter substrate, a liquid crystal layer and a Plastic closures. The thin film transistor substrate includes a surrounding line. The surrounding lines are disposed around the thin film transistor substrate. The surrounding circuit includes two first wires and one second wire. The first wires are substantially parallel to each other. One of the first wires has a first connection point, and the other of the first wires has a second connection point. The second wire is connected to at least the first connection point and the second connection point. One of the first connection point and the second connection point is inclined to the first wires. The liquid crystal layer is disposed between the thin film transistor substrate and the color filter substrate. The encapsulant surrounds the liquid crystal layer and covers the surrounding lines.

According to a second aspect of the invention, a thin film transistor substrate is provided. The thin film transistor substrate includes a surrounding line. The surrounding lines are disposed around the thin film transistor substrate. The surrounding circuit includes two first wires and one second wire. The first wires are substantially parallel to each other. One of the first wires has a first connection point, and the other of the first wires has a second connection point. The second wire is connected to at least the first connection point and the second connection point. One of the first connection point and the second connection point is oblique to the first wires.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

First embodiment

Please refer to FIG. 1 , which is a schematic diagram of a display panel 1000 according to a first embodiment of the present invention. The display panel 1000 includes a thin film transistor substrate 100, a color filter substrate 200, a liquid crystal layer 300, and an adhesive 400. The liquid crystal layer 300 is disposed between the thin film transistor substrate 100 and the color filter substrate 200. The encapsulant 400 surrounds the liquid crystal layer 300 and is disposed between the thin film transistor substrate 100 and the color filter substrate 200.

Please refer to FIG. 1 and FIG. 2 simultaneously. FIG. 2 is a plan view showing the thin film transistor substrate 100 of FIG. 1. The thin film transistor substrate 100 includes a surrounding line 110. The surrounding line 110 is disposed around the thin film transistor substrate 100 and connected to the Common voltage electrode. The sealant 400 covers a portion of the surrounding line 110.

In the manufacturing process, the sealant 400 is first applied to the surrounding circuit 110. Then, the thin film transistor substrate 100 and the color filter substrate 200 are bonded together. Next, the sealant 400 is cured by UV light. The material of the surrounding line 110 is made of metal, and ultraviolet light cannot pass through the metal. Please refer to FIG. 3, which shows an enlarged view of the surrounding line 110 of the first embodiment of the present invention. In order to allow ultraviolet light to pass through the surrounding line 110 to cure the sealant 400, the surrounding line 110 of the present embodiment is composed of a plurality of wires, such as the first wire 111 and the second wire 112 of FIG. When the surrounding line 110 of the embodiment is formed by using a plurality of wires, it can help the ultraviolet light to pass through the surrounding line 110, thereby curing the sealant 400.

In Fig. 3, the upper side of the surrounding line 110 is outside the thin film transistor substrate 100 (shown in Fig. 2), and the lower side of the surrounding line 110 is the thin film transistor substrate 100 (shown in Fig. 2). Inside. The first wires 111 of this embodiment are substantially parallel to each other. One of the first wires 111 has a first connection point P11, and the other first wire 111 has a second connection point P12. The second wire 112 is connected to the first connection point P11 and the second connection point P12. One of the first connection point P11 and the second connection point P12 is obliquely connected to the first wire 111. That is, the connection between the first connection point P11 and the second connection point P12 is not perpendicular to the first wire 111.

When the encapsulant 400 (shown in FIG. 2) covers the surrounding line 110, a portion of the encapsulant 400 will fill the gap between the first wire 111 and the second wire 112. Since the surrounding line 110 forms a rugged surface, the encapsulant 400 may not be filled. When the outside air pressure is large, the gas may invade the inside of the thin film transistor substrate 100 (shown in FIG. 2) along the second wire 112 (this phenomenon is also referred to as "outer punch"). In more detail, the second wire 112 of the present embodiment is a straight line that is not perpendicular to the first wire 111. When the gas invades, the gas must follow the oblique second wire 112 walking. The oblique connection of the second wire 112 of the present embodiment at the connection between the first connection point P11 and the second contact point P12 can effectively reduce the force of gas intrusion.

When the line connecting the first connection point P11 and the second contact point P12 has an angle θ11 with the first wire 111, the force of gas intrusion can be effectively reduced at least twice. In the present embodiment, the angle θ11 is less than 45 degrees, so that the force of gas intrusion can be effectively reduced to at least 0.707 times.

In addition, the second wires 112 of the embodiment are in a staggered arrangement, and the second wires 112 adjacent to the inner and outer sides of the first wire 111 are not located on the same vertical line of the first wires 111. As a result, the difficulty of invading the gas along the second wire 112 adjacent to the inner and outer sides of the first wire 111 is further increased.

In addition, the oblique directions of the lines connecting the first connection point P11 and the second contact point P12 corresponding to the staggered second wires 112 are not the same. For example, the tilting direction corresponding to the three second wires 112 from left to right in FIG. 3 is alternately changed.

For the width design of the first wire 111 and the second wire 112, the width W11 of the first wire 111 and the width W12 of the second wire 112 of the embodiment are substantially equal. On the one hand, the structural strength of the first wire 111 and the second wire 112 can be taken into consideration, and the design of the reticle is also convenient.

In terms of the density of the second wires 112, when the pitch W13 of the second wires 112 in the direction parallel to the first wires 111 is greater than the widths W11 and W12 of the first wires 111 and the second wires 112, the second wires 112 can be used. Great blocking performance.

Second embodiment

Referring to FIG. 4, an enlarged view of the surrounding line 210 of the second embodiment of the present invention is shown. The surrounding line 210 of this embodiment is different from the surrounding line 110 of the first embodiment in the design of the second wire 212. The second wire 212 of the embodiment is A fold line, the rest of the same points are not repeated.

As shown in FIG. 4, the second wire 212 includes a first straight line L1, a second straight line L2, and a third straight line L3. One end of the first straight line L1 is connected to the first connection point P21. One end of the second straight line L2 is connected to the second connection point P22. The third straight line L3 is connected to the first straight line L1 and the second straight line L2. The first straight line L1, the second straight line L2, and the third straight line L3 form a lightning-type structure.

The first straight line L1 and the second straight line L2 of the embodiment are inclined to the first conductive line 211, and the third straight line L3 is substantially parallel to the first conductive line 211. Therefore, when the gas is to invade along the second wire 212, it must travel along the first straight line L1, the third straight line L3, and the second straight line L2 in sequence. The turning points of the first straight line L1, the third straight line L3, and the second straight line L2 exert an effect of blocking the gas, and the phenomenon of external punching can be effectively reduced.

Third embodiment

Referring to FIG. 5, an enlarged view of the surrounding line 310 of the third embodiment of the present invention is shown. The surrounding line 310 of the present embodiment is different from the surrounding line 110 of the first embodiment in the design of the second wire 312. The second wire 212 of the embodiment is a broken line, and the rest of the same is not repeated.

As shown in FIG. 5, the second wire 312 includes a fourth line L4, a fifth line L5, and a sixth line L6. One end of the fourth straight line L4 is connected to the first connection point P31. One end of the fifth straight line L5 is connected to the second connection point P32. The sixth straight line L6 is connected to the fourth straight line L4 and the fifth straight line L5. The fourth straight line L4, the fifth straight line L5, and the sixth straight line L6 form a lightning-type structure.

The fourth line L4 and the fifth line L5 of the embodiment are inclined to the first wire 311, and the sixth line L6 is inclined to the first wire 311. Therefore, when the gas is to invade along the second wire 312, it must sequentially follow the fourth straight line L4 and the sixth straight line L6. The fifth straight line L5 walks. The turning point of the fourth straight line L4, the sixth straight line L6, and the fifth straight line L5 exerts an effect of blocking the gas, and the phenomenon of external punching can be effectively reduced.

In the present embodiment, the angle θ31 between the fourth straight line L4 and the sixth straight line L6 is smaller than the angle θ32 between the fourth straight line L4 and the first wire 311. The angle θ33 between the fifth straight line L5 and the sixth straight line L6 is smaller than the angle θ34 between the fifth straight line L5 and the first wire 311. In other words, when viewed from the outside of the thin film transistor substrate 100 (shown in FIG. 2) (the upper side of the drawing is the outer side, the lower side of the drawing is the inner side), the fourth straight line L4 extends toward the inner side, and then The sixth straight line L6 extends toward the outside, and then the fifth straight line L5 extends inward. In this way, when the gas is to invade along the fourth straight line L4, the sixth straight line L6, and the fourth straight line L4, the sixth straight line L6 extending outward can effectively increase the blocking effect.

Fourth embodiment

Please refer to FIG. 6, which is an enlarged view of the surrounding line 410 of the fourth embodiment of the present invention. The surrounding line 410 of the present embodiment is different from the surrounding line 110 of the first embodiment in the design of the second wire 412. The second wire 212 of the embodiment is a broken line, and the rest are not repeated.

As shown in FIG. 6, the second wire 412 includes a seventh straight line L7, an eighth straight line L8, a ninth straight line L9, a tenth straight line L10, and a tenth straight line L11. One end of the seventh straight line L7 is connected to the first connection point P41. One end of the eighth straight line L8 is connected to the second connection point P42. One end of the ninth straight line L9 is connected to the third connection point P43. The second connection point P42 and the third connection P43 are on the same first wire 411, but spaced apart by a predetermined distance. The distance D41 between the second connection point P42 and the first connection point P41 is substantially equal to the distance D42 between the third connection point P43 and the first connection point P41. That is, the first connection point P41 is located at a middle position between the second connection point P42 and the third connection point P43.

The tenth straight line L10 connects the seventh straight line L7 and the eighth straight line L8. The eleventh straight line L11 connects the seventh straight line L7 and the ninth straight line L9. The eighth straight line L8, the ninth straight line L9, the tenth straight line L10, and the tenth straight line L11 are inclined to the first wire 411, and the seventh straight line L7 is substantially perpendicular to the first wire 411. The seventh straight line L7, the eighth straight line L8, the ninth straight line L9, the tenth straight line L10, and the tenth straight line L11 form a mountain-shaped structure.

With the structure of this embodiment, when the gas is to invade along the second wire 412, it must be sequentially followed along the seventh straight line L7, the tenth straight line L11, and the ninth straight line L9, or along the seventh straight line L7, The tenth straight line L10 and the eighth straight line L8 travel. The turning point of the seventh straight line L7, the tenth straight line L11, and the ninth straight line L9 exerts a blocking effect on the gas, and the turning points of the seventh straight line L7, the tenth straight line L10, and the eighth straight line L8 also block the gas. The effect can effectively reduce the phenomenon of external punching.

Further, when the gas is to enter along the seventh straight line L7, the tenth straight line L10 and the tenth straight line L11 are divided into two paths, so that the force of gas intrusion can be effectively reduced.

In the present embodiment, the angle θ41 between the tenth straight line L10 and the seventh straight line L7 is less than 90 degrees, and the angle θ42 between the tenth straight line L11 and the seventh straight line L7 is less than 90 degrees. In other words, when viewed from the outside of the thin film transistor substrate 100 (shown in FIG. 2) (the upper side of the drawing is the outer side, the lower side of the drawing is the inner side), the seventh straight line L7 extends toward the inner side, and then The tenth straight line L10 or the tenth straight line L11 extends toward the outside, and then the eighth straight line L8 or the ninth straight line L9 extends inward. In this way, when the gas is to enter along the seventh straight line L7, the tenth straight line L10, and the eighth straight line L8, or the gas is to enter along the seventh straight line L7, the tenth straight line L11, and the ninth straight line L9, The tenth straight line L10 and the tenth straight line L11 extending outward can effectively increase the blocking effect.

Fifth embodiment

Referring to FIG. 7, an enlarged view of a surrounding line 510 of a fifth embodiment of the present invention is shown. The surrounding line 510 of this embodiment is different from the surrounding line 110 of the first embodiment in the design of the second wire 512. The second wire 212 of the embodiment is a broken line, and the rest of the same is not repeated.

As shown in FIG. 7, the second wire 512 includes a plurality of twelfth straight lines L12 and a plurality of thirteenth straight lines L13. In one of the second wires 512, one end of the outermost twelfth straight line L12 is connected to the first connection point P51, and one end of the innermost twelfth straight line L12 is connected to the second connection point P52 (the upper side of the figure is the outer side) The bottom of the figure is the inner side). The twelfth straight line L12 and the thirteenth straight lines L13 are connected in rotation. The twelveth straight line L12 is substantially perpendicular to the first wire 511, and the thirteenth straight line L13 is substantially parallel to the first wire 511. The twelfth straight line L12 and the thirteenth straight lines L13 form a stepped structure.

When the gas intrudes along the second wire 512, it is necessary to sequentially follow the twelfth straight line L12 and the thirteenth straight line L13 of the rotation. The turning point of the twelfth straight line L12 and the thirteenth straight line L13 exerts a blocking effect on the gas, and the phenomenon of external punching can be effectively reduced.

In the present embodiment, the second wire 512 is described by taking three twelfth straight lines L12 and two thirteenth straight lines L13 as an example. However, the number of the twelfth straight line L12 and the thirteenth straight line L13 is not limited thereto, and the second wire 512 may also be composed of N twelfth lines L12 and N-1 thirteenth straight lines L13 (N is greater than Or equal to a positive integer of two).

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

1000‧‧‧LCD panel

100‧‧‧thin film substrate

110, 210, 310, 410, 510‧‧‧ surrounding lines

111, 211, 311, 411, 511‧‧‧ first wire

112, 212, 312, 412, 512‧‧‧ second conductor

200‧‧‧Color filter substrate

300‧‧‧Liquid layer

400‧‧‧Packing

D41, D42‧‧‧ distance

L1‧‧‧ first straight line

L2‧‧‧Second straight line

L3‧‧‧ third straight line

L4‧‧‧ fourth straight line

L5‧‧‧ fifth straight line

L6‧‧‧ sixth straight line

L7‧‧‧ seventh straight line

L8‧‧‧8th straight line

L9‧‧‧ ninth straight line

L10‧‧‧10th straight line

L11‧‧‧ tenth straight line

L12‧‧‧ twelfth straight line

P11, P21, P31, P41, P51‧‧‧ first connection point

P12, P22, P32, P42, P52‧‧‧ second connection point

P43‧‧‧ third connection point

Θ11, θ31, θ32, θ33, θ34, θ41, θ42‧‧‧ angle

W11, W12‧‧‧ width

W13‧‧‧ spacing

FIG. 1 is a schematic view showing a display panel according to a first embodiment of the present invention.

Fig. 2 is a plan view showing the thin film transistor substrate of Fig. 1.

Figure 3 is an enlarged view of the surrounding circuit of the first embodiment of the present invention.

Figure 4 is an enlarged view of the surrounding circuit of the second embodiment of the present invention.

Figure 5 is an enlarged view of the surrounding circuit of the third embodiment of the present invention.

Figure 6 is an enlarged view of the surrounding circuit of the fourth embodiment of the present invention.

Figure 7 is an enlarged view of the surrounding circuit of the fifth embodiment of the present invention.

110‧‧‧around lines

111‧‧‧First wire

112‧‧‧Second wire

P11‧‧‧ first connection point

P12‧‧‧second connection point

W11, W12‧‧‧ width

W13‧‧‧ spacing

Θ11‧‧‧ angle

Claims (16)

A liquid crystal display panel comprising: a thin film transistor substrate, comprising: a surrounding circuit disposed around the thin film transistor substrate, the surrounding circuit comprising: two first wires, the first wires are substantially parallel to each other, One of the first wires has a first connection point, and the other of the first wires has a second connection point; and a second wire connected to the first connection point And the second connection point, the first connection point and the second connection point are connected to the first wires, and the second wire is a fold line; a color filter substrate; a liquid crystal layer, And disposed between the thin film transistor substrate and the color filter substrate; and a glue surrounding the liquid crystal layer and covering a portion of the surrounding line. The liquid crystal display panel of claim 1, wherein the second wire comprises: a first straight line, one end connected to the first connecting point; a second straight line, one end connected to the second connecting point; a third straight line Connected to the first line and the second line; wherein the first line and the second line are inclined to the first wires, the third line being substantially parallel to the first wires. The liquid crystal display panel of claim 1, wherein the second wire comprises: a fourth straight line, one end connected to the first connection point; a fifth straight line, one end connected to the second connection point; and a first a six-line connected to the fourth line and the fifth line; wherein the fourth line, the fifth line, and the sixth line are inclined to the first wires. The liquid crystal display panel of claim 3, wherein the fourth straight line The angle between the fifth line and the first line is smaller than the angle between the fifth line and the sixth line is smaller than the angle between the five lines and the first wires. The liquid crystal display panel of claim 1, wherein the other one of the first wires further has a third connection point, wherein the second connection point and the third connection point are located at the same And a second connection point is spaced apart from the third connection point by a predetermined distance, and the second wire is further connected to the third connection point. The liquid crystal display panel of claim 5, wherein the distance between the second connection point and the first connection point is substantially equal to the distance between the third connection point and the first connection point. The liquid crystal display panel of claim 5, wherein the second wire comprises: a seventh straight line, one end connected to the first connection point; an eighth straight line, one end connected to the second connection point; a straight line, one end connected to the third connecting point; a tenth straight line connecting the seventh straight line and the eighth straight line; and a tenth straight line connecting the seventh straight line and the ninth straight line; wherein the eighth straight line The ninth straight line, the tenth straight line, and the tenth straight line are inclined to the first conductive lines, and the seventh straight line is substantially perpendicular to the first conductive lines. The liquid crystal display panel of claim 7, wherein an angle between the tenth straight line and the seventh straight line is less than 90 degrees, and an angle between the tenth straight line and the seventh straight line is less than 90 degrees. The liquid crystal display panel of claim 1, wherein the second wire comprises: a plurality of twelfth straight lines, one end of one of the twelfth straight lines is connected to the first connection point, and the One end of the other of the twelve straight lines is connected to the second connecting point; and a plurality of thirteenth straight lines, the second straight lines and the thirteenth straight lines are connected; The twelveth straight lines are substantially perpendicular to the first conductive lines, and the thirteenth straight lines are substantially parallel to the first conductive lines. The liquid crystal display panel of claim 1, wherein an angle between the connection and the first wires is less than 45 degrees. The liquid crystal display panel of claim 1, wherein the width of the first wires and the width of the second wires are substantially equal. A thin film transistor substrate comprising: a surrounding circuit disposed around the thin film transistor substrate, the surrounding circuit comprising: two first wires, the first wires are substantially parallel to each other, wherein the first wires are One having a first connection point, the other of the first wires has a second connection point; and a second wire connected to the first connection point and the second connection point, One of the first connection point and the second connection point is oblique to the first wires, and the second wire is a fold line. The thin film transistor substrate of claim 12, wherein the second wire comprises: a first straight line, one end connected to the first connection point; a second straight line, one end connected to the second connection point; a straight line connected to the first line and the second line; wherein the first line and the second line are inclined to the first wires, the third line being substantially parallel to the first wires. The thin film transistor substrate of claim 12, wherein the second wire comprises: a fourth straight line, one end connected to the first connection point; a fifth straight line, one end connected to the second connection point; a six-line connected to the fourth line and the fifth line; wherein the fourth line, the fifth line, and the sixth line are inclined to the first wires. The thin film transistor substrate of claim 12, wherein the The other one of the wires further has a third connecting point, the second connecting point and the third connecting point are located at the same one of the first wires, and the second connecting point is spaced apart from the third connecting point by a predetermined distance. The second wire includes: a seventh straight line, one end connected to the first connecting point; an eighth straight line, one end connected to the second connecting point; a ninth straight line, one end connected to the third connecting point; a tenth straight line, Connecting the seventh straight line and the eighth straight line; and a tenth straight line connecting the seventh straight line and the ninth straight line; wherein the eighth straight line, the ninth straight line, the tenth straight line, and the eleventh line The line is inclined to the first wires, and the seventh line is substantially perpendicular to the first wires. The thin film transistor substrate of claim 12, wherein the second wire comprises: a plurality of twelfth straight lines, one end of one of the twelfth straight lines connecting the first connection point, the One end of the other of the twelfth straight line is connected to the second connecting point; and a plurality of thirteenth straight lines, the twelfth straight lines and the thirteenth straight lines are connected; wherein the twelfth straight lines Substantially perpendicular to the first wires, the thirteenth lines are substantially parallel to the first wires.