CN104698690B - Liquid crystal display panel and preparation method thereof - Google Patents

Abstract

A liquid crystal display panel and a method for manufacturing the same, the liquid crystal display panel includes: the first substrate is provided with a display area and a frame rubber area, and the frame rubber area surrounds the display area; a second substrate opposite to the first substrate; the frame glue is arranged in the frame glue area of the first substrate and comprises a plurality of corner parts and a plurality of strip parts, wherein two adjacent strip parts meet at one of the corner parts; the corner portions comprise a plurality of first corner portions and a plurality of second corner portions, wherein each first corner portion has an arc-shaped periphery adjacent to the display area, and each second corner portion has an angular periphery adjacent to the display area.

Description

Liquid crystal display panel and manufacturing method thereof

technical field

The invention relates to a liquid crystal display panel and a preparation method thereof, in particular to a liquid crystal display panel with a narrow frame and a preparation method thereof.

Background technique

Today's display technology is developing rapidly, and consumers' demand for display devices is also increasing. Whether it is for small-sized portable display products or large-scale display devices, their appearance is moving towards lighter and thinner. Display devices with high image quality, good space utilization, low power consumption, and no radiation have gradually become mainstream.

For small-sized panels, such as mobile phones or tablet computers, the development trend is to have the characteristics of the largest display area under the same panel size, and in order to meet the requirements of narrow borders, it must be efficiently narrow The frame outside the display area of the customized panel.

Currently widely used liquid crystal displays, in the preparation process, if the liquid crystal is injected using the liquid crystal low method (One Drop Filling), it is necessary to apply a frame glue on the substrate first, and inject the liquid crystal after curing. Among them, the frame glue The enclosed area is filled with liquid crystals and serves as a panel display area. However, most of the current methods of coating frame glue use the die coating method, and when using the die coating method, it will be limited by the turning radius of the frame glue coating machine, so that the corners at the corners The frame glue forms an arc and approaches the display area of the panel, and overlaps into the display area of the panel. In this way, the area of the display area of the panel is limited, and the width of the frame of the display panel is increased, which cannot achieve a narrow frame display The requirements of the panel, and there will be the problem of frame glue overflow.

Therefore, there is an urgent need to develop a sealant suitable for narrow-frame display panels and its coating method, so as to effectively increase the area of the display area and improve the tensile strength of the panel.

Contents of the invention

The object of the present invention is to provide a liquid crystal display panel.

Another object of the present invention is to provide a method for preparing the above-mentioned liquid crystal display panel.

In order to achieve the above object, the liquid crystal display panel provided by the present invention includes: a first substrate having a display area and a sealant area, and the sealant area surrounds the display area; a second substrate and the first substrate opposite; and a frame glue, which is arranged on the frame glue area of the first substrate, and the frame glue includes a plurality of corner portions and a plurality of strip-shaped portions, wherein two adjacent strip-shaped portions intersect at the corners One of the parts; the corners include a plurality of first corners and a plurality of second corners, wherein each of the first corners has an arc-shaped peripheral edge adjacent to the display area, and each of the first corners The two corners have an angular periphery adjacent to the display area.

In an embodiment of the present invention, the liquid crystal display panel further includes at least one spacer disposed on the first substrate or the second substrate, and the position of the spacer is between the display area and the second substrate. between the two corners.

In an embodiment of the present invention, the first substrate includes at least one groove, and the position of the groove corresponds to the second corner portion.

In an implementation aspect of the present invention, the distance between the bar adjacent to the two first corners and the display area is greater than that of the bar adjacent to the first corner and the second corner at the same time. distance from the display area.

In an embodiment of the present invention, the distance between the bar-shaped portions adjacent to the two first corner portions and the display area is greater than the distance between the bar-shaped portions adjacent to the two second corner portions at the same time. area distance.

The method for preparing the liquid crystal display panel provided by the present invention includes: (A) providing a first substrate having a display area and a sealant area surrounding the display area, and the display area has a first edge and a connection The second edge of the first edge; (B) coating a first glue strip on the frame glue area along the first edge of the display area to form a plurality of strip-shaped parts and a plurality of strips connecting the strips (C) coating a second adhesive strip on the frame glue area along a second edge of the display area to form at least one strip; and (D) providing a second Substrate, the second substrate is pressed onto the first substrate, so that the first adhesive strip and the second adhesive strip are located between the first substrate and the second substrate; wherein, the second adhesive strip and the The first adhesive strips intersect to form two second corners, and each of the first corners has an arc-shaped peripheral edge adjacent to the display area, and each of the second corners has a corner adjacent to the display area perimeter.

In an embodiment of the method for preparing a liquid crystal display panel provided by the present invention, step (C) can be performed before step (B).

In an embodiment of the method for preparing a liquid crystal display panel provided by the present invention, after the step (D), it further includes: (E) cutting along the strips adjacent to the two second corners .

In an embodiment of the manufacturing method of a liquid crystal display panel provided by the present invention, the angular peripheral edge is composed of a first peripheral edge and a second peripheral edge, and the first peripheral edge and the second peripheral edge An included angle of substantially 90 degrees is formed.

Description of drawings

1 to 5 are schematic diagrams of a method for preparing a liquid crystal display panel according to Embodiment 1 of the present invention.

6 to 7 are schematic diagrams of a method for preparing a liquid crystal display panel according to Embodiment 2 of the present invention.

8 and 9 are schematic diagrams of a liquid crystal display panel according to a preferred embodiment of the present invention.

10 and 11 are schematic diagrams of a liquid crystal display panel according to a preferred embodiment of the present invention.

12 and 13 are schematic diagrams of a liquid crystal display panel according to a preferred embodiment of the present invention. Explanation of symbols in the attached drawings:

The first substrate 10; the frame glue area 11; the edges 111, 112, 113; the lower substrate 101; the protective layer 103; the display area 12; the thin film transistor 102; Rubber strip 22; first strip part 211, 211'; second strip part 213; third strip part 215, 215'; fourth strip part 221, 221'; RGB color layer 202; first corner part 212a, 212a', 212b, 212b'; second corner portion 222a, 222a', 222b, 222b'; spacer 31; groove 32; liquid crystal layer 51; first edge A; second edge B; arc-shaped peripheral edge C, C'; angular perimeter D, D'; first perimeter D1; second perimeter D2.

Detailed ways

The implementation of the present invention is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied by other different specific embodiments, and various modifications and changes can be made to the details in this specification for different viewpoints and applications without departing from the spirit of the present invention.

Example 1

The manufacturing steps of the liquid crystal display panel provided in this embodiment are shown in FIGS. 1-4 . Wherein, as shown in FIG. 1 , a first substrate 10 is provided, the first substrate 10 has a sealant area 11 and a display area 12, wherein the sealant area 11 surrounds the display area 12, and the display area 12 has a first edge A and A second edge B connected to the first edge A; the width of the three sides of the sealant area 11 is smaller than the width of the other side. However, in other embodiments, the width of the sealant area 11 can be changed according to the shape of the display and the design of the signal routing, and preferably, the side where the driver IC is disposed has a larger width than the other three sides.

Next, glue is applied along the first edge A of the sealant area 11 to form a first rubber strip 21 having three strips and two first corners, as shown in FIG. 2 , wherein the first The rubber strip 21 includes a first strip portion 211, a second strip portion 213, a third strip portion 215, a first corner portion 212a between the first strip portion 211 and the second strip portion 213, and The first corner portion 212 b between the second strip portion 213 and the third strip portion 215 . Since the first rubber strip 21 is continuously coated, at the corner of the rubber strip, due to the limitation of the turning radius of the frame glue coating machine and the influence of the viscosity of the frame glue itself, the first rubber strip 21 The two first corner portions 212 a , 212 b have an arc-shaped peripheral edge C adjacent to the display area 12 .

Furthermore, glue is applied along the second edge B of the frame glue area 11 to form the second rubber strip 22 as shown in FIG. The second strip 22 intersects with the first strip portion 211 and the third strip portion 215 of the first strip 21 to form two second corner portions 222a, 222b, wherein the two second corner portions 222a, 222b There is an angular peripheral edge D adjacent to the display area 12 . The angular peripheral edge D is composed of a first peripheral edge and a second peripheral edge, and the first peripheral edge and the second peripheral edge form an angle of substantially 90 degrees.

Next, a liquid crystal layer 51 is formed in the display area 12 of the first substrate 10 .

Next, a second substrate 20 is provided, and the second substrate 20 is pressed onto the first substrate 10 so that the first adhesive strip 21 and the second adhesive strip 22 are located between the first substrate 10 and the second substrate. Between 20.

Next, the first substrate 10 and the first strip portion 211 , the third strip portion 215 , and the fourth strip portion formed thereon are cut along the three side edges 111 , 112 , and 113 of the sealant area 11 . part 221 to form the sealant pattern as shown in FIG. 4 .

As shown in FIG. 4 , the completed sealant includes a first strip portion 211 ′, a second strip portion 213 , a third strip portion 215 ′, and a fourth strip portion 221 ′. After the cutting step, the figure The distance between the first bar 211' and the display area 12 shown in is a'; the distance between the third bar 215' and the display area 12 is c', and the distance between the fourth bar 221' and the display area 12 The distance between the second bar 213 and the display area 12 is b'. In addition, the completed sealant also includes two first corner parts 212a', 212b', and two second corner parts 222a', 222b', wherein the first corner part 212a' is interposed between the first strip part 211' and the second strip part 213, the first corner part 212b' is between the third strip part 215' and the second strip part 213, and the two first corner parts 212a', 212b' It has an arc-shaped peripheral edge C' on the side close to the display area 12; and the second corner part 222a' is between the first strip part 211' and the fourth strip part 221', and the second corner part 222b' It is between the third strip part 215' and the fourth strip part 221', and the two second corner parts 222a', 222b' have an angular peripheral edge D' on the side close to the display area 12. The shaped peripheral edge D' is composed of a first peripheral edge D1 and a second peripheral edge D2, and the first peripheral edge D1 and the second peripheral edge D2 form an included angle of substantially 90 degrees.

In addition, the distance b' between the second strip portion 213 adjacent to the two first corner portions 212a', 212b' and the display area 12 is greater than the distance b' between the first corner portion 212a' and the second corner portion 212a'. The distance a' between the first strip portion 211' of the corner portion 222a' and the display area 12 is larger than the third strip portion 215' adjacent to the first corner portion 212b' and the second corner portion 222b' at the same time. The distance c' from the display area 12 is greater than the distance d' from the display area 12 to the fourth strip portion 221 ′ adjacent to the second corner portions 222a', 222b'.

Please refer to FIG. 5 , which is a cross-sectional view along the X-axis of FIG. 4 . In this embodiment, the first substrate 10 is a thin film transistor array substrate (TFT array substrate), and includes a lower substrate 101 , a thin film transistor 102 , and a protective layer 103 . However, in other implementations, the first substrate 10 can be other types of active device array substrates; and in this embodiment, the second substrate 20 is a color filter, including RGB color layers 202 and an upper substrate 201 . However, in other implementations, the second substrate 20 may be an opposite substrate having a black matrix or a common electrode.

Example 2

The manufacturing method of the liquid crystal display panel disclosed in this embodiment is roughly the same as that in Embodiment 1, except that the coating order of the first adhesive strip 21 and the second adhesive strip 22 is reversed. Please refer to FIG. 6, FIG. 6 is to apply glue along the second edge B of the frame rubber area 11 to form a second strip 22 with a strip, which is the fourth strip 221, and then as shown in FIG. 7, Coating the first strip 21 along the first edge A of the sealant area 11 to form the first strip 21 having three strips and two first corners, including the first strip 211, The second strip portion 213, the third strip portion 215, the fourth strip portion 221, and the first corner portion 212a between the first strip portion 211 and the second strip portion 213, between the second The first corner portion 212b between the strip portion 213 and the third strip portion 215, and the first strip portion 211 and the third strip portion 215 of the first strip 21 are the fourth corner of the second strip 22. The strips 221 intersect to form two second corners, which include a second corner 222a between the first strip 211 and the fourth strip 221, and a second corner 222a between the third strip 215 and The second corner portion 222b between the fourth strip portions 221 . Follow the preparation method shown in Example 1 to form the sealant pattern as shown in FIG. 4 , and complete the liquid crystal display panel as shown in FIG. 5 .

In addition, in the process of coating the sealant in the above-mentioned embodiment 1 and embodiment 2, if the amount of sealant applied is too much, it is easy to be in the process of pressing the first substrate 10 and the second substrate 20 The occurrence of overflow will affect the display performance of the display area 12 and reduce the reliability of the product. In the liquid crystal display panel provided by the present invention, when coating the sealant, since the plastic frames of the second corner portion 222a and the second corner portion 222b are formed by the intersection of the first rubber strip 21 and the second rubber strip 22, Therefore, the two second corner portions 222a and 222b will have a large amount of sealant, which may cause overflow of the sealant during pressing.

Therefore, in order to avoid overflow of the sealant, the second substrate 20 of Embodiment 1 and Embodiment 2 may include one or more spacers 31, as shown in FIG. 8 and FIG. 9 , wherein FIG. 9 is a In the cross-sectional view of '-a tangent line, the spacer 31 is arranged between the sealant of the two second corners 222a', 222b' and the display area 12, and is located in the sealant area 11, so as to block the sealant during the pressing process Overflow to display area 12. However, in other implementations, the spacer 31 can be of other types, and there is no special limitation, as long as the frame glue can be prevented from overflowing, and the spacer 31 can be formed on the first substrate 10 .

In addition, the first substrate 10 of Embodiment 1 and Embodiment 2 may include a groove 32, as shown in FIG. 10 and FIG. 11 , wherein FIG. 11 is a cross-sectional view of a'-a line in FIG. 10 . The groove 32 is disposed on the first substrate 10 and corresponds to the second corner portion 222a' and the second corner portion 222b'. In this way, excess sealant can be filled in the groove 32 during pressing to avoid overflow into the display area12. The groove 32 shown in FIG. 10 is a triangular groove. However, in other embodiments, the shape of the groove 32 is not particularly limited, as long as it can prevent the overflow of the sealant. In an embodiment, the trench 32 may be formed on the second substrate 20 .

Alternatively, the liquid crystal display panel provided by the present invention may have one or more spacers 31 and grooves 32 at the same time, as shown in FIG. 12 and FIG. 13 , wherein FIG. cutaway view. Wherein, the spacer 31 is arranged on the second substrate 20, between the sealant of the second corner part 222a', 222b' and the display area 12, and is located in the sealant area 11; and the groove 32 is arranged in the first on the substrate 10 and correspond to the second corner portions 222a', 222b'.

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the present invention should be based on the scope of the patent application, rather than limited to the above-mentioned embodiments.

Claims (16)

1. a kind of liquid crystal display panel, including：

One first substrate, there is a viewing area and a frame glue area, and the frame glue area is around the viewing area；

One second substrate is relative with the first substrate；And

One frame glue, the frame glue area of the first substrate being arranged at, the frame glue includes a plurality of corner portions and a plurality of stripes, Wherein, two adjacent stripes intersect at one of those corner portions；Those corner portions include a plurality of first turns Corner and a plurality of second corner portions, wherein, each first corner portion has an arcuation periphery in the adjacent viewing area, And each second corner portion has a horn shape periphery in the adjacent viewing area；

Wherein, while it is adjacent to the distance of the stripes of two first corner portions at a distance of the viewing area and is more than while is adjacent to Distance of the stripes of first corner portion and second corner portion at a distance of the viewing area.

2. liquid crystal display panel as claimed in claim 1, wherein, the horn shape periphery is by one first periphery and one second periphery Formed, first periphery forms the angle of 90 degree of an essence with second periphery.

3. liquid crystal display panel as claimed in claim 1, wherein, including at least one be arranged at the first substrate or second base Separation material on plate, the position of the separation material is between the viewing area and second corner portion.

4. liquid crystal display panel as claimed in claim 1, wherein, the first substrate includes an at least groove, the position of the groove Put and correspond to second corner portion.

5. a kind of liquid crystal display panel, including：

One first substrate, there is a viewing area and a frame glue area, and the frame glue area is around the viewing area；

One second substrate is relative with the first substrate；And

One frame glue, the frame glue area of the first substrate being arranged at, the frame glue includes a plurality of corner portions and a plurality of stripes, Wherein, two adjacent stripes intersect at one of those corner portions；Those corner portions include a plurality of first turns Corner and a plurality of second corner portions, wherein, each first corner portion has an arcuation periphery in the adjacent viewing area, And each second corner portion has a horn shape periphery in the adjacent viewing area；

Wherein, while it is adjacent to the distance of the stripes of two first corner portions at a distance of the viewing area and is more than while is adjacent to Distance of the stripes of two second corner portions at a distance of the viewing area.

6. liquid crystal display panel as claimed in claim 5, wherein, the horn shape periphery is by one first periphery and one second periphery Formed, first periphery forms the angle of 90 degree of an essence with second periphery.

7. liquid crystal display panel as claimed in claim 5, wherein, including at least one be arranged at the first substrate or second base Separation material on plate, the position of the separation material is between the viewing area and second corner portion.

8. liquid crystal display panel as claimed in claim 5, wherein, the first substrate includes an at least groove, the position of the groove Put and correspond to second corner portion.

9. a kind of preparation method of liquid crystal display panel, including：

(A) first substrate is provided, it has a viewing area and one around the frame glue area of the viewing area, and the viewing area has One first edge and one connect the first edge second edge；

(B) one first adhesive tape is coated with the frame glue area along a first edge of the viewing area, to form a plurality of stripes And a plurality of the first corner portions for connecting those stripes；

(C) one second adhesive tape is coated with the frame glue area along a second edge of the viewing area, to form at least one shape portion； And

(D) second substrate is provided, the second substrate is pressure bonded on the first substrate, makes first adhesive tape and second adhesive tape Between the first substrate and the second substrate；

Wherein, second adhesive tape is intersected with first adhesive tape to form two the second corner portions, and each first corner portion There is an arcuation periphery in the adjacent viewing area, and each second corner portion has horn shape week in the adjacent viewing area Edge；

Wherein, while it is adjacent to the distance of the stripes of two first corner portions at a distance of the viewing area and is more than while is adjacent to Distance of the stripes of first corner portion and second corner portion at a distance of the viewing area.

10. preparation method as claimed in claim 9, wherein, the step (C) can be carried out before the step (B).

11. preparation method as claimed in claim 9, wherein, include after the step (D)：

(E) cut along those stripes for being adjacent to two second corner portion.

12. preparation method as claimed in claim 9, wherein, the horn shape periphery is by one first periphery and one second periphery institute Composition, first periphery form the angle of 90 degree of an essence with second periphery.

13. a kind of preparation method of liquid crystal display panel, including：

(A) first substrate is provided, it has a viewing area and one around the frame glue area of the viewing area, and the viewing area has One first edge and one connect the first edge second edge；

(B) one first adhesive tape is coated with the frame glue area along a first edge of the viewing area, to form a plurality of stripes And a plurality of the first corner portions for connecting those stripes；

(C) one second adhesive tape is coated with the frame glue area along a second edge of the viewing area, to form at least one shape portion； And

(D) second substrate is provided, the second substrate is pressure bonded on the first substrate, makes first adhesive tape and second adhesive tape Between the first substrate and the second substrate；

Wherein, second adhesive tape is intersected with first adhesive tape to form two the second corner portions, and each first corner portion There is an arcuation periphery in the adjacent viewing area, and each second corner portion has horn shape week in the adjacent viewing area Edge；

Wherein, while it is adjacent to the distance of the stripes of two first corner portions at a distance of the viewing area and is more than while is adjacent to Distance of the stripes of two second corner portions at a distance of the viewing area.

14. preparation method as claimed in claim 13, wherein, the step (C) can be carried out before the step (B).

15. preparation method as claimed in claim 13, wherein, include after the step (D)：

(E) cut along those stripes for being adjacent to two second corner portion.

16. preparation method as claimed in claim 13, wherein, the horn shape periphery is by one first periphery and one second periphery institute Composition, first periphery form the angle of 90 degree of an essence with second periphery.