TW202004279A - Display panel and display device - Google Patents

Abstract

A display panel has a display area and a frame area surrounding the display area. The display panel includes a color filter substrate and a TFT substrate disposed opposite to each other, and a liquid crystal layer and a sealant disposed between the color filter substrate and the TFT substrate. The sealant is disposed corresponding to the frame area and seals the liquid crystal layer to be between the color filter substrate and the TFT substrate. The display panel further includes at least one first retaining wall located in the sealant and surrounding the display area. The first retaining wall connects the color filter substrate and the TFT substrate. The present invention also provides a display device including the above display panel. Due to the at least one first retaining wall provided in the sealant, the area for supporting the color filter substrate and the TFT substrate is increased, and the supporting effect of the partial sealant can be partially replaced, so that the width of the sealant can be narrowed, thereby achieving a narrow bezel design.

Description

Display panel and display device

The present invention relates to the field of display technology, and in particular, to a display panel and a display device.

Liquid crystal display (LCD) has the advantages of light weight, thin thickness, low power consumption and small radiation. It has been widely used in information technology, multimedia technology and other fields, and has gradually become the mainstream of various display devices. With the development of display technology, liquid crystal displays with high transmittance, large size, low power consumption, and low cost have become the future development direction.

The liquid crystal display panel generally includes a color filter substrate, a thin film transistor (Thin Film Transistor, TFT) substrate, a liquid crystal layer, and a sealant. Among them, the sealant is located in the frame area of the liquid crystal display panel to restrict the liquid crystal in the liquid crystal cell. However, in order to enhance the combining ability of the color filter substrate and the TFT substrate, the conventional liquid crystal display panel sealant has a large size, which is not conducive to the realization of the narrow border of the liquid crystal display panel.

A display panel having a display area and a frame area surrounding the display area, the display panel includes a color filter substrate and a TFT substrate disposed oppositely, and a color filter substrate and the TFT substrate disposed between the color filter substrate and the TFT substrate A liquid crystal layer and a sealant, the sealant is provided corresponding to the frame area and seals the liquid crystal layer between the color filter substrate and the TFT substrate, and the display panel further includes the sealant And at least one first blocking wall surrounding the display area, the first blocking wall is connected to the color filter substrate and the TFT substrate.

The display panel provided by the present invention is installed in the first retaining wall in the frame glue, so that the area supporting the color filter substrate and the TFT substrate is increased, and can replace part of the support effect of the frame glue, so the width of the frame glue can be made narrow to achieve Narrow border design.

A display device includes a body and a display panel disposed in the body. The display panel is the above-mentioned display panel. Since the above display panel has a narrow bezel, the display device provided by the present invention also has a narrow bezel.

FIG. 1 is a schematic top view of a display panel 100 according to an embodiment of the invention. As shown in FIG. 1, the display panel 100 has a display area 101 and a frame area 102 surrounding the display area 101. The frame area 102 is an area covered with a black shading layer, which is opaque. The frame area 102 includes a frame area 103 and a non-frame area 104. The frame area 103 surrounds the non-frame area 104 and the frame The area 104 adjoins and surrounds the display area 101.

As shown in FIG. 1, the display panel 100 further includes at least one first barrier wall 11 disposed corresponding to the frame area 103 and surrounding the display area 101 and a plurality of spaced first spacers 12 located in the non-frame area 104 and surrounding The display area 101 is provided with at least one second retaining wall 14 and a plurality of second spacers 13 arranged at intervals. The at least one first retaining wall 11 and the at least one second retaining wall 14 are all closed rectangles surrounding the display area 101. It can be understood that the first retaining wall 11 may be four strip-shaped retaining walls that are respectively located around the display area 101 and are not closed. The second retaining wall 14 may be four strip-shaped retaining walls that are respectively located around the display area 101 and are not closed.

FIG. 2 is a schematic cross-sectional view of FIG. 1 taken along section line II-II after the color filter substrate 20 and the TFT substrate 30 are aligned. As shown in FIG. 2, the display panel 100 includes a color filter substrate 20 and a TFT substrate 30 disposed oppositely, and a liquid crystal layer 10 and a sealant 40 disposed between the color filter substrate 20 and the TFT substrate 30. The sealant 40 Corresponding to the sealant area 103, the liquid crystal layer 10 is sealed between the color filter substrate 20 and the TFT substrate 30.

As shown in FIG. 2, the at least one first retaining wall 11 is located in the frame glue 40. The first retaining wall 11 includes a first part 111 and a second part 112 that is connected to the first part 111. Wherein, the first portion 111 and the second portion 112 are respectively disposed around the display area 101, and the first portion 111 and the second portion 112 each include a first end (1111, 1121) with a larger cross-sectional area and a second portion with a smaller cross-sectional area At the two ends (1112, 1122), the first end 1111 of the first part 111 is fixed to the color filter substrate 20, the first end 1121 of the second part 112 is fixed to the TFT substrate 30, the second end 1112 of the first part 111 and The second end 1122 of the second part 112 is connected in alignment. The cross-sectional dimension of the second end 1112 of the first part 111 is larger than the cross-sectional dimension of the second end 1122 of the second part 112. The longitudinal section of the first part 111 and the longitudinal section of the second part 112 are both trapezoidal. Wherein, the cross-section is a cross-section along the direction parallel to the TFT substrate 30, and the longitudinal cross-section is a longitudinal cross-section parallel to the thickness direction of the display panel 100, that is, a longitudinal cross-section perpendicular to the direction of the TFT substrate 30.

In this embodiment, the first blocking wall 11 is fixed on both ends of the color filter substrate 20 and the TFT substrate 30 to be thicker, so that the area supporting the color filter substrate 20 and the TFT substrate 30 is increased, thereby increasing the first block The supporting force of the wall 11 on the color filter substrate 20 and the TFT substrate 30 can replace the supporting effect of a part of the frame glue 40, so the width of the frame glue 40 can be made narrow to realize a narrow bezel design.

FIG. 4 is a schematic diagram of the structure of the first retaining wall 11 in the display panel 100 according to an embodiment of the invention. As shown in FIG. 4, the longitudinal section of the first portion 111 and the longitudinal section of the second portion 112 are both trapezoidal. That is, the first part 111 tapers from its first end to its second end, the second part 112 tapers from its first end to its second end, and the cross-sectional dimension of the second end 1112 of the first part 111 is greater than The cross-sectional dimension of the second end 1122 of the second part 112, that is, the second end 1112 of the first part 111 is thicker, and the second end 1122 of the second part 112 is thinner, by this arrangement, the first retaining wall 11 can be ensured The first part 111 and the second part 112 can be accurately connected in position, and when the color filter substrate 20 and the TFT substrate 30 are vibrated or squeezed, they are not likely to shift between the two, which can be effective Improve the reliability of the connection between the two.

FIG. 3 is a schematic cross-sectional view of FIG. 1 taken along section line II-II before the color filter substrate 20 and the TFT substrate 30 are aligned. 2 and FIG. 3 together, the display panel 100 further includes a plurality of third spacers 15 and a plurality of fourth spacers 16 provided corresponding to the display area 101. In an embodiment, the first spacer 12, the second spacer 13, the third spacer 15, and the fourth spacer 16 are all column spacers arranged at intervals.

As shown in FIGS. 2 and 3, the color filter substrate 20 includes a glass substrate 21, a black matrix 22 formed on a surface of the glass substrate 21, and a plurality of color filter layer patterns formed on the surface of the black matrix 22 away from the glass substrate 21 23 and the dummy pattern 24, and the flat layer 25 covering the plural color filter layer patterns 23 and the dummy pattern 24. The plural color filter layer patterns 23 and the dummy patterns 24 have the same thickness. The plural color filter layer patterns 23 correspond to the display area 101, the dummy pattern 24 corresponds to the frame area 103, and the corresponding non-frame area 104 has no virtual pattern. 24或彩色滤层模型23。 24 or color filter layer pattern 23. Thereby, the corresponding glue area 103 is used to form the height of the flat layer 25 at the first retaining wall 11 and the first spacer 12 and the corresponding display area 101 is used to form the flat at the third spacer 15 and the fourth spacer 16 The height of the layer 25 is the same, and the height is greater than the height of the flat layer 25 at the corresponding non-frame glue area 104 for forming the second retaining wall 14 and the second spacer 13.

As shown in FIG. 3, before the color filter substrate 20 and the TFT substrate 30 are aligned, the height of the first spacer 12 in the natural state, the height of the second spacer 13 in the natural state, and the third spacer 15 are The heights in the natural state are equal, the height of the first retaining wall 11 in the natural state, the height of the second retaining wall 14 in the natural state, the height of the fourth spacer 16 in the natural state are equal, and the first spacer 12 The height in the natural state, the height of the second spacer 13 in the natural state, and the height of the third spacer 15 in the natural state are greater than the height of the first retaining wall 11 in the natural state, and the height of the second retaining wall 14 in the natural state The height in the state and the height of the fourth spacer 16 in the natural state.

In this embodiment, when the color filter substrate 20 and the TFT substrate 30 are opposite to each other, the first spacer 12 with a larger height of the frame area 103 and the third spacer 15 with a higher height of the display area 101 first contact the TFT substrate 30. The first blocking wall 11 with a small height of the frame area 103, the fourth spacer 16 with a small height of the display area 101, the second blocking wall 14 and the second spacer 13 of the non-frame area 104 face the TFT substrate 30 No TFT substrate 30 is extended and touched. When the display panel 100 is further squeezed, the first spacer 12 of the frame area 103 and the third spacer 15 of the display area 101 are compressed to provide the main support effect; the first retaining wall 11 of the frame area 103 The first part 111 and the second part 112 are connected in alignment, and the other end of the fourth spacer 16 with a small height in the display area 101 contacts the TFT substrate 30 to provide further support.

As shown in FIG. 2, when the color filter substrate 20 and the TFT substrate 30 are aligned to each other, the first spacer 12 and the third spacer 15 having a relatively large height can provide a main supporting role to maintain the color filter substrate 20 and the The thickness of the box between the TFT substrates 30; the first retaining wall 11 and the fourth spacer 16 with a small height can provide further support; the second spacer 13 and the second retaining wall 14 corresponding to the non-frame glue area 104 are both One end is fixed on the color filter substrate 20, and the other end is suspended, that is, the other end extends toward the TFT substrate 30 and does not contact the TFT substrate 30. That is, the compression deformation of the first spacer 12 in the thickness direction of the display panel 100 is greater than the compression deformation of the first blocking wall 11 in the thickness direction of the display panel 100, and the third spacer 15 in the thickness direction of the display panel 100 The compression deformation amount is greater than the compression deformation amount of the fourth spacer 16 in the thickness direction of the display panel 100. In addition, the second spacer 13 and the second barrier wall 14 are used to guide the flowing liquid crystal to reduce or avoid the leakage of the sealant 40 caused by the impact of the liquid crystal flow on the sealant 40.

In this embodiment, the color filter substrate 20 further includes a first electrode layer (not shown). The first electrode layer may be a common electrode, which may be made of a transparent conductive material, such as indium tin oxide (Indium Tin Oxide, ITO) or Indium-doped Zinc Oxide (IZO). The TFT substrate 30 may include scan lines and data lines staggered, a thin film transistor array, and a second electrode layer. Each thin film transistor is disposed at a crossing of the scan line and a data line, and the smallest area defined by the adjacent two scan lines and the two adjacent data lines defines a pixel area. The second electrode layer includes a plurality of pixel electrodes, and each pixel area is provided with a pixel electrode. A driving electric field is formed between the first electrode layer and the second electrode layer to drive the liquid crystal molecules in the liquid crystal layer 10 to rotate.

As shown in FIG. 2, the display panel 100 includes a side surface 105 that surrounds and connects the frame area 102. The side surface 105 is covered with an adhesive layer 50. The adhesive layer 50 covers the frame adhesive 40 and the color filter substrate 20 and the TFT substrate 30. The gap between the connections. In this embodiment, the adhesive layer 50 is disposed on the side 105 surrounding the display panel 100 and connected to the frame area 102, so that the firmness of the connection between the color filter substrate 20 and the TFT substrate 30 is further enhanced, and thus the sealant 40 The width can be further reduced to achieve a narrower border design.

Specifically, the adhesive layer 50 is at least one of a waterproof adhesive layer, an antistatic adhesive layer, a light-shielding adhesive layer, or a buffer adhesive layer with a mechanical buffer function. With this arrangement, the display panel 100 can simultaneously achieve at least one of the narrow frame and the functions of waterproof, antistatic, shading, or mechanical strength enhancement.

Understandably, the adhesive layer 50 may also be a multi-layer glue formed by a combination of two, three, or even four of a waterproof adhesive layer, an antistatic adhesive layer, a light-shielding adhesive layer, or a buffer adhesive layer with a mechanical buffer function. In the case of multi-layer glue combination, the coating order of each glue layer can be arranged arbitrarily.

An embodiment of the present invention further provides a display device (not shown). The display device includes a body (not shown) and a display panel 100 disposed in the body. The display panel 100 is the display panel 100 described above. Specifically, the type of the display device is not limited, for example, it can be any product with a display function such as a display, a flat-screen TV, a tablet computer, a mobile phone, an advertising display screen, an information indication screen, a car display screen, a smart watch, a smart bracelet, etc. Components are not limited here. For the implementation of the display device, reference may be made to the above-mentioned embodiment of the display panel 100, and the repetition is not repeated here.

The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solution of the present invention.

100‧‧‧Display panel 101‧‧‧Display area 102‧‧‧Border area 103‧‧‧frame rubber area 104‧‧‧Non-frame rubber area 105‧‧‧Side 10‧‧‧Liquid crystal layer 20‧‧‧Color filter substrate 21‧‧‧Glass substrate 22‧‧‧ Black Matrix 23‧‧‧Color filter layer pattern 24‧‧‧Virtual pattern 25‧‧‧flat layer 30‧‧‧TFT substrate 40‧‧‧ frame glue 11‧‧‧The first retaining wall 111‧‧‧Part 1 1111‧‧‧The first part of the first part 1112‧‧‧The second end of the first part 112‧‧‧Part 2 1121‧‧‧The first end of the second part

FIG. 1 is a schematic top view of a display panel according to an embodiment of the invention.

FIG. 2 is a schematic cross-sectional view of FIG. 1 taken along section line II-II after the color filter substrate and the TFT substrate are aligned with each other.

FIG. 3 is a schematic cross-sectional view of FIG. 1 taken along section line II-II before the color filter substrate and the TFT substrate are aligned with the cell.

4 is a schematic structural diagram of a first retaining wall in a display panel according to an embodiment of the invention.

100‧‧‧Display panel

101‧‧‧Display area

102‧‧‧Border area

103‧‧‧frame rubber area

104‧‧‧Non-frame rubber area

11‧‧‧The first retaining wall

12‧‧‧ First spacer

13‧‧‧Second spacer

14‧‧‧Second retaining wall

Claims (10)

A display panel having a display area and a frame area surrounding the display area, the display panel includes a color filter substrate and a TFT substrate disposed oppositely, and a color filter substrate and the TFT substrate disposed between the color filter substrate and the TFT substrate A liquid crystal layer and a sealant, the sealant is provided corresponding to the frame area and seals the liquid crystal layer between the color filter substrate and the TFT substrate. The improvement is that the display panel further includes At least one first blocking wall in the frame glue and surrounding the display area, the first blocking wall is connected to the color filter substrate and the TFT substrate. The display panel according to claim 1, wherein the first blocking wall includes a first part and a second part butted with the first part, the first part is fixed on the color filter substrate, and the second part It is fixed on the TFT substrate. The display panel according to claim 2, wherein the first portion and the second portion each include a first end with a larger cross-sectional area and a second end with a smaller cross-sectional area, the cross-section is along A cross section parallel to the direction of the TFT substrate, the first end of the first portion is connected to the color filter substrate, the first end of the second portion is connected to the TFT substrate, the second end of the first portion and the The second end of the second part is connected in alignment. The display panel according to claim 3, wherein the cross-sectional dimension of the second end of the first portion is larger than the cross-sectional dimension of the second end of the second portion. The display panel according to claim 3, wherein the longitudinal section of the first portion and the longitudinal section of the second portion are both trapezoidal, and the longitudinal section is a longitudinal section parallel to the thickness direction of the display panel . The display panel according to claim 1, wherein the display panel further includes a plurality of first spacers arranged at intervals in the frame glue, and a compression deformation of the first spacer in a thickness direction of the display panel is greater than The compression deformation of the first retaining wall along the thickness direction of the display panel. The display panel according to claim 6, wherein the frame area includes a frame area and a non-frame area, the frame area surrounds the non-frame area, and the non-frame area is adjacent to and surrounds the In the display area, the frame glue corresponds to the frame glue area, and the display panel further includes at least one second retaining wall located in the non-frame glue area and surrounding the display area, and one end of the second retaining wall is fixed The other end of the color filter substrate extends toward the TFT substrate and does not contact the TFT substrate. The display panel according to claim 7, wherein the display panel further includes a plurality of second spacers arranged corresponding to the intervals provided in the non-framed area, and one end of the plurality of second spacers is fixed to the The other end of the color filter substrate extends toward the TFT substrate and does not contact the TFT substrate. The display panel according to claim 1, wherein the display panel includes a side surrounding and connecting the frame area, and an adhesive layer is coated on the side. A display device includes a main body and a display panel provided in the body, wherein the display panel is the display panel according to any one of request items 1 to 9.

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