TWI719688B - Liquid crystal display panel - Google Patents

Abstract

The present disclosure relates to a liquid crystal display (LCD) panel. The LCD panel includes a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer located between the first substrate and the second substrate. The first substrate includes a display portion as a display region and at least two edge portions as a non-display regions. The second substrate is a flexible substrate. The second substrate includes a support portion, two first extending portions, and a second extending portion. A size of the support potion is equal to a size of the display portion. The two first extending portions correspond to the at least two edge portions. The second extending portion is extended from a side of the support portion facing away the first substrate, and is located below the display portion. A plurality of electronic elements are disposed on the second extending portion. Projections of the electronic elements along a light emitting direction are overlapped with the display region.

Description

LCD panel

The invention relates to a liquid crystal display panel.

The LCD screen has many advantages, such as light weight, thin body, and energy saving, so it has been widely used. The liquid crystal display device is usually provided with an outer lead bonding area (Outer Lead Bonding, OLB). Due to the existence of the pin bonding area, the liquid crystal display device cannot achieve a narrow frame design.

In view of this, it is necessary to provide a liquid crystal display panel that can realize a narrow frame design.

A liquid crystal display panel includes: a first substrate including a display portion as a display area and at least two edge portions as a non-display area; a second substrate arranged opposite to the first substrate; a liquid crystal layer , Arranged between the first substrate and the second substrate; the second substrate is a flexible substrate; the second substrate includes a support portion, two first extension portions, a second extension portion, and electronic components; The supporting portion is arranged opposite to the display portion and is of equal size; the first extending portion is arranged opposite to the at least two edge portions; the second extending portion is located away from the supporting portion by one side of the supporting portion. The first substrate extends in the direction, and is located below the display portion; the second extension portion is provided with a number of electronic components, and the electronic components are located on the light emitting side The upward projection overlaps the display portion; the display portion is in the shape of a rectangular flat plate; the at least two edge portions are bent and extend from two opposite sides of the display portion to the side close to the second substrate The liquid crystal display panel further includes a sealing portion provided around the liquid crystal layer; the sealing portion is used to seal and bond the first substrate and the second substrate into one body; a part of the sealing portion It is located below the at least two edge portions to reduce the area of the non-display area in the light emitting direction.

In the above-mentioned liquid crystal display panel, by arranging the electronic components on the extension part, the electronic components overlap the display part in the light emitting direction, so as to avoid the phenomenon of reducing the proportion of the liquid crystal display panel due to the arrangement of the electronic components, thereby achieving narrowness. Border or no border design.

100, 200: LCD panel

1011, 2011: Display Department

1013, 2013: Edge

1012: first side

1014: second side

101, 201: the first substrate

103, 203: second substrate

102, 202: Sealing part

104: gap

105,205: liquid crystal layer

107,207: spacer

1031, 2031: support part

1032, 2032: first extension

1033, 2033: second extension

1034: The first bending part

1036: Second bending part

106,206: electronic components

FIG. 1 is a three-dimensional schematic diagram of the liquid crystal display panel of the first embodiment.

FIG. 2 is a schematic plan view of the liquid crystal display panel in FIG. 1.

3 is a schematic cross-sectional view of the liquid crystal display panel in FIG. 1 along III-III.

4 is a schematic cross-sectional view of the liquid crystal display panel in FIG. 1 along IV-IV.

FIG. 5 is a schematic view of the laying before the second substrate shown in FIG. 3 is bent.

FIG. 6 is a three-dimensional schematic diagram of the liquid crystal display panel of the second embodiment.

FIG. 7 is a schematic cross-sectional view of the liquid crystal display panel in FIG. 6 along VII-VII.

In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is a part of the embodiment of the present invention, but not all Examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly defined and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. ; It can be a mechanical connection, an electrical connection, or a mutual communication; it can be a direct connection, or an indirect connection without an intermediate connection, it can be a connection between two components or an interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present invention can be immediately determined according to the specific situation.

The terms "first", "second", and "third" in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the term "including" and any variations of them are intended to cover non-exclusive inclusion.

The specific embodiments of the liquid crystal display panel of the present invention will be described below with reference to the accompanying drawings.

Please also refer to FIGS. 1-4, which are a three-dimensional view, a schematic plan view, a schematic cross-sectional view along the III-III direction, and a schematic cross-sectional view along the IV-IV direction of the liquid crystal display panel 100 according to the first embodiment of the present invention. The liquid crystal display panel 100 can be applied to a variety of electronic devices with a liquid crystal display structure, such as desktop displays, tablet computers, personal digital assistants (PDAs), car dashboards, and wearable display devices, but not Limited to this.

The liquid crystal display panel 100 includes a first substrate 101, a second substrate 103 disposed opposite to the first substrate 101, a sealing portion 102, a liquid crystal layer 105 and spacers 107.

The first substrate 101 is made of a transparent material, and is used to prevent impurities such as dust from entering the inside of the liquid crystal display panel 100. In this embodiment, the first substrate 101 may be a glass substrate, or other transparent substrates with high strength and high hardness, such as polycarbonate (PC), polyester (Polythylene terephthalate, PET), and polycarbonate. Polymethylmethacrylate (PMMA), Cyclic Olefin Copolymer, COC) or polyether sulfone (PES) and other materials. In this embodiment, the first substrate 101 is cover glass. In other embodiments, the first substrate 101 may be color filter glass (CF Glass). The first substrate 101 includes a display portion 1011 and at least two edge portions 1013. The display portion 1011 serves as a display area of the liquid crystal display panel 100. The display portion 1011 includes two opposite first sides 1012 and two opposite second sides 1014. The first side 1012 and the second side 1014 are adjacently arranged. In this embodiment, the display portion 1011 has a rectangular parallelepiped flat plate structure. Wherein, the first side 1012 is a long side, and the second side 1014 is a short side. In this embodiment, the first substrate 101 includes two opposite edge portions 1013. The edge portion 1013 is formed by bending and extending from the first side 1012 to the side close to the second substrate 103. The edge portion 1013 serves as a non-display area of the liquid crystal display panel 100. In other embodiments, the first substrate 101 includes three edge portions 1013. Wherein, the two edge portions 1013 are formed by bending and extending from two opposite first sides 1012 to the side close to the second substrate 103, and the other edge portion is formed from the second side The side 1014 is curved and extended toward the side close to the second substrate 103.

The sealing portion 102 is disposed between the first substrate 101 and the second substrate 103 and is located at the edges of the first substrate 101 and the second substrate 103. The sealing portion 102 has a frame shape and is disposed around the liquid crystal layer 105. The sealing portion 102 is used for sealing and tightly bonding the first substrate 101 and the second substrate 103 into one body, and a gap 104 is formed between the first substrate 101 and the second substrate 103. In this embodiment, the sealing portion 102 is a glue layer.

The second substrate 103 is a flexible substrate to reduce the weight and thickness of the liquid crystal display panel 100. In this embodiment, the second substrate 103 is a polyimide film (PI).

The liquid crystal layer 105 is sandwiched between the first substrate 101 and the second substrate 103 and is located in the gap 104. The liquid crystal layer 105 is composed of a plurality of liquid crystal molecules (not shown).

The spacers 107 are arranged between the first substrate 101 and the second substrate 103 and arranged in a matrix in the gap 104. The spacer 107 is also used to maintain the distance between the first substrate 101 and the second substrate 103 to provide uniform support for the first substrate 101.

The second substrate 103 further includes a support portion 1031, two first extension portions 1032 (as shown in FIG. 3), and a second extension portion 1033 (as shown in FIG. 4). The supporting portion 1031 is disposed opposite to the display portion 1011 and completely overlaps. The supporting portion 1031 is substantially in the shape of a rectangular parallelepiped plate. The two first extension portions 1032 are formed by bending and extending two sides of the supporting portion 1031 opposite to the two edge portions 1013 in a direction away from the first substrate 101. Viewed from the light emitting direction, the first extension portion 1032 is located below the edge portion 1013. The bending direction and radius of curvature of the first extension portion 1032 and the edge portion 1013 are the same. The sealing portion 102 is further disposed between the first extension portion 1032 and the edge portion 1013 to reduce the area of the non-display area in the front view direction, thereby providing a screen-to-body ratio of the liquid crystal display panel 100. The second extension portion 1033 is formed by bending and extending the side of the support portion 1031 that is not opposite to the edge portion 1013 in a direction away from the first substrate 101. The second extension portion 1033 includes a first bending portion 1034 and a second bending portion 1036. The first bending portion 1034 is formed by bending and extending at least one side of the supporting portion 1031 that is not opposite to the edge portion 1013 in a direction away from the first substrate 101. In this embodiment, the first bending portion 1034 is perpendicular to the supporting portion 1031. The second bending portion 1036 is formed by extending the end of the first bending portion 1034 away from the first substrate 101 in a direction parallel to the supporting portion 1031 and is located below the supporting portion 1031. A number of electronic components 106 are provided on the surface of the second bending portion 1036 away from the second substrate 103, so as to avoid the reduction of the LCD panel 100 screen occupancy due to the arrangement of the electronic components 106. The phenomenon of ratio. In other words, the projection of the electronic component 106 in the light emitting direction is located in the display portion 1011 and is not coplanar with the display portion 1011. In this embodiment, the electronic component 106 may be IC (Integrated Circuit), COF (Chip On Flex), FPC (Flexible Printed Circuit Board), PCB (Printed Circuit) Board, printed circuit board), resistors, capacitors, etc., but not limited to this. In other embodiments, part of the electronic components 106 may also be disposed between the first extension portion 1032 and the edge portion 1013.

Please also refer to FIG. 5, which is a schematic view of the tiling of the second substrate 103 before bending. During the manufacturing process, the second substrate 103 is attached to the first substrate 101 in a flat structure, and then the first extension portion 1032 and the second extension portion 1033 are bent to make the A bending portion 1034 is perpendicular to the supporting portion 1031, and the second bending portion 1036 is located below the supporting portion 1031.

Please refer to FIGS. 6 and 7, which are a perspective view of the liquid crystal display panel 200 and a schematic cross-sectional view along VII-VII of the second embodiment.

The liquid crystal display panel 200 includes a first substrate 201, a second substrate 203 disposed opposite to the first substrate 201, a sealing portion 202, a liquid crystal layer 205 and a spacer 207.

The first substrate 201 is made of a transparent material and is used to prevent impurities such as dust from entering the inside of the liquid crystal display panel 200. In this embodiment, the first substrate 201 may be a glass substrate, or other transparent substrates with high strength and high hardness, such as polycarbonate (PC), polyester (Polythylene terephthalate, PET), and It is made of polymethylmethacrylate (PMMA), Cyclic Olefin Copolymer (COC) or Polyether sulfone (PES) and other materials. In this embodiment, the first substrate 201 is cover glass. In other embodiments, the first substrate 201 may be color filter glass (CF Glass). The first substrate 201 has a curved structure. The first substrate 201 includes a display portion 2011 and at least two edge portions 2013. The display portion 2011 serves as a display area of the liquid crystal display panel 200. The display portion 2011 has a curved structure. In this embodiment, the first substrate 201 includes two opposite edge portions 2013. The edge portion 2013 serves as a non-display area of the liquid crystal display panel 200. In other embodiments, the first substrate 201 includes three adjacently arranged edge portions 2013.

The sealing portion 202 is disposed between the first substrate 201 and the second substrate 203 and located at the edges of the first substrate 201 and the second substrate 203. The sealing portion 202 has a frame shape and is disposed around the liquid crystal layer 205. The sealing portion 202 is used to seal and tightly bond the first substrate 201 and the second substrate 203 into one body, and form a gap between the first substrate 201 and the second substrate 203 (not shown in the figure) Marked). In this embodiment, the sealing portion 202 is a glue layer.

The second substrate 203 is a flexible substrate to reduce the weight and thickness of the liquid crystal display panel 100. In this embodiment, the second substrate 203 is a polyimide film (PI).

The liquid crystal layer 205 is sandwiched between the first substrate 201 and the second substrate 203 and is located in the gap. The liquid crystal layer 205 is composed of a plurality of liquid crystal molecules (not shown).

The spacers 207 are arranged between the first substrate 201 and the second substrate 203, and arranged in a matrix in the gap. The spacer 207 is also used to maintain the distance between the first substrate 201 and the second substrate 203 to provide uniform support for the first substrate 201.

The second substrate 203 further includes a supporting portion 2031, two first extending portions 2032, and a second extending portion 2033 (as shown in FIG. 6). The supporting portion 2031 is disposed opposite to the first substrate 201 and has the same curvature and bending direction as the first substrate 201. The first extension portion 2032 is formed by extending two opposite sides of the second substrate 203 in a direction away from the first substrate 201. Viewed from the light emitting direction, the first extension portion 2032 is located at the edge portion 2013 Below. The bending direction and radius of curvature of the first extension portion 2032 and the edge portion 2013 are the same. Part of the sealing portion 202 is further disposed between the first extension portion 2032 and the edge portion 2013 to reduce the area of the non-display area in the front view direction, thereby providing the screen-to-body ratio of the liquid crystal display panel 200. The second extension portion 2033 is formed by extending the side of the supporting portion 2031 that is not opposite to the edge portion 2013 in a direction away from the first substrate 201. In this embodiment, the second extension portion 2033 is arranged in parallel with the light emitting direction of the liquid crystal display panel 200. A number of electronic components 206 are arranged on the second extension portion 2033 to avoid the phenomenon that the screen-to-body ratio of the liquid crystal display panel 100 is reduced due to the arrangement of the electronic components 206. In this embodiment, the electronic component 206 may be IC (Integrated Circuit), COF (Chip On Flex), FPC (Flexible Printed Circuit Board), PCB (Printed Circuit) Board, printed circuit board), resistors, capacitors, etc., but not limited to this.

In summary, the present invention meets the requirements of an invention patent, and Yan filed a patent application in accordance with the law. However, the above are only the preferred embodiments of the present invention. For those who are familiar with the technique of this case, equivalent modifications or changes made in accordance with the creative spirit of this case should be included in the scope of the following patent applications.

100: LCD panel

1013: Edge

106: electronic components

102: Sealing part

1031: Support

1032: first extension

1033: second extension

1034: The first bending part

1036: Second bending part

Claims (5)

A liquid crystal display panel includes: a first substrate including a display portion as a display area and at least two edge portions as a non-display area; a second substrate arranged opposite to the first substrate; a liquid crystal layer , Arranged between the first substrate and the second substrate; wherein the second substrate is a flexible substrate; the second substrate includes a support portion, two first extension portions, a second extension portion, and electronic Element; the support portion is opposite to the display portion and is arranged at the same size; the first extension portion is arranged opposite to the at least two edge portions; the second extension portion is directed from one side of the support portion It extends away from the first substrate and is located below the display portion; the second extension portion is provided with a number of electronic components, and the projection of the electronic components in the light emitting direction overlaps the display portion; The display portion is in the shape of a rectangular flat plate; the at least two edge portions are bent and extended from two opposite sides of the display portion to a side close to the second substrate; the liquid crystal display panel further includes A sealing portion provided around the liquid crystal layer; the sealing portion is used to seal and bond the first substrate and the second substrate into one body; a part of the sealing portion is located below the at least two edge portions, In order to reduce the area of the non-display area in the light emitting direction. The liquid crystal display panel according to claim 1, wherein the first extension portion is bent and extends from two sides of the support portion opposite to the at least two edge portions in a direction away from the first substrate The first extension portion and the at least two edge portions have the same bending direction and radius of curvature. The liquid crystal display panel according to claim 1, wherein the second extension portion includes a first bending portion and a second bending portion; the first bending portion and the supporting portion are arranged perpendicularly; The second bending portion is formed by extending the end of the first bending portion away from the first substrate in a direction parallel to the support portion, and is located below the support portion. The liquid crystal display panel according to claim 3, wherein the electronic component is provided on a surface of the second bending portion opposite to the supporting portion. The liquid crystal display panel according to claim 1, wherein the liquid crystal display panel further includes a plurality of spacers; the sealing portion forms a gap between the first substrate and the second substrate; the spacers It is located between the first substrate and the second substrate, and is arranged in a matrix in the gap; the spacer is used to provide uniform supporting force to the first substrate.

Images