CN109471285B - Flexible substrate, flexible display panel and display device - Google Patents

Abstract

The invention provides a flexible substrate, a flexible display panel and a display device. The glass substrate is provided with a plurality of transverse channels and a plurality of longitudinal channels, and the transverse channels and the longitudinal channels are intersected to form a plurality of rectangular areas; and the transverse channel and the longitudinal channel respectively penetrate through the glass substrate, wherein a filling body is respectively arranged in the transverse channel and the longitudinal channel, so that the filling body fills the transverse channel and the longitudinal channel, and a groove is formed in the transverse channel and the longitudinal channel.

Description

Flexible substrate, flexible display panel and display device

technical field

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

Background technique

In recent years, with the popularity of flexible wearable devices and flexible mobile devices, flexible display technology has become more and more sought after by consumers. Due to the technical limitations of the display panel itself, organic light-emitting diode (OLED) display panels are mainly used in flexible display technology, and there are few reports on the application of liquid crystal display panels (LCD display panels) to flexible displays. .

Compared with OLED display panels, LCD display panels have advantages due to longer lifetime, more mature production process, higher yield and lower cost.

Please refer to FIG. 1 , which is a schematic structural diagram of a conventional LCD display panel. As shown in FIG. 1 , the LCD display panel 1 includes a first substrate 11 and a second substrate 12 that are laminated up and down, and a liquid crystal layer 13 sandwiched between the first substrate 11 and the second substrate 12 . The first substrate 11 and the second substrate 12 are both glass substrates. Therefore, the bendability of the LCD display panel 1 cannot be bent at any curvature due to the limitation of glass properties, and thus cannot be applied to flexible display technology.

Therefore, it is necessary to provide a new flexible substrate that can be applied to LCD display panels to solve the problem of traditional LCD

The problem that the display panel cannot be bent.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a flexible substrate, which can be applied to LCD display panels, especially TFT-LCD

In the display panel, the LCD display panel is made flexible.

In order to achieve the above object, the present invention provides a flexible substrate, which is applied to a flexible display panel. The flexible substrate includes: a glass substrate on which a plurality of lateral channels and a plurality of vertical channels are arranged, and the plurality of lateral channels and the plurality of vertical channels intersect to form a plurality of rectangles and the lateral channel and the vertical channel penetrate through the glass substrate; and the filling body partially fills the lateral channel and the vertical channel so as to fill the lateral channel and the vertical channel in the lateral channel. and a trench is formed in the longitudinal channel.

In an embodiment of the present invention, the flexible substrate further includes at least one layer of an elastomer formed on the surface of the glass substrate and covering the glass substrate to completely fill the lateral channel and the groove within the longitudinal channel.

In an embodiment of the present invention, the depths of the grooves are different according to different compositions of the glass substrate. In one embodiment, the trenches in each of the plurality of lateral channels have the same or different depths; the trenches in each of the plurality of longitudinal channels have the same or different depths from each other.

In a preferred embodiment of the present invention, the trenches in the plurality of lateral trenches have a uniform depth. In a preferred embodiment of the present invention, the grooves in the plurality of longitudinal channels have a uniform depth. Furthermore, in a preferred embodiment of the present invention, the grooves in the plurality of lateral channels and the grooves in the plurality of longitudinal channels have the same uniform depth.

In an embodiment of the present invention, the opening width of the groove is set differently according to the actual resolution. The grooves in each of the plurality of lateral channels have the same or different opening widths; the grooves in each of the plurality of longitudinal channels have the same or different opening widths.

In a preferred embodiment of the present invention, the grooves in the plurality of lateral channels have a uniform opening width. In a preferred embodiment of the present invention, the grooves in the plurality of longitudinal channels have a uniform opening width. Furthermore, in a preferred embodiment of the present invention, the grooves in the plurality of lateral channels and the grooves in the plurality of longitudinal channels have the same uniform opening width.

In an embodiment of the present invention, the cross-sectional shape of the groove is, for example, but not limited to, a rectangle, a triangle, a trapezoid or an arcuate shape.

In a preferred embodiment of the present invention, the grooves in the plurality of lateral channels have a uniform cross-sectional shape. In a preferred embodiment of the present invention, the grooves in the plurality of longitudinal channels have a uniform cross-sectional shape. Furthermore, in a preferred embodiment of the present invention, the grooves in the plurality of lateral channels and the grooves in the plurality of longitudinal channels have the same uniform cross-sectional shape.

In an embodiment of the present invention, the filling body and the elastic body are made of the same material or different materials.

In a preferred embodiment of the present invention, the elastomer is made of materials such as but not limited to polyvinyl alcohol (PVA), polyimide (PI) and the like.

The present invention also provides applications of the above glass substrate or flexible substrate in thin film transistor array substrates (TFT array substrates), color filter array substrates (CF substrates), flexible display panels, flexible LCD display panels, displays or electronic devices.

The present invention also provides a flexible display panel including at least one of the above-mentioned flexible substrates.

In an embodiment of the present invention, the flexible display panel includes a TFT array substrate, wherein the TFT array substrate includes a plurality of pixel units, and a rectangular area of the glass substrate of the flexible substrate is formed. The pixel units are described, and a thin film transistor device is formed in each pixel unit.

In an embodiment of the present invention, the flexible substrate includes at least one layer of an elastic body, the elastic body is formed on the surface of the glass substrate and covers the glass substrate, and the pixels of the TFT array substrate Cells are formed on the elastomer. That is, the TFT device layer of the TFT array substrate is formed on the elastic body of the flexible substrate, and the pixel units in the display area of the TFT array substrate correspond to the glass substrate of the flexible substrate on the rectangular area.

In an embodiment of the present invention, the flexible display panel includes a color filter substrate, wherein the color filter substrate has a plurality of sub-pixel units arranged in an array, and one of the glass substrates of the flexible substrate A sub-pixel unit is formed in the rectangular area.

In an embodiment of the present invention, the flexible substrate further includes at least one layer of an elastic body, and the elastic body is formed on the surface of the glass substrate and covers the glass substrate. The sub-pixel unit is formed on the elastic body.

In a preferred embodiment, the present invention provides a flexible LCD display panel, comprising a first substrate and a second substrate disposed opposite to each other, and a liquid crystal layer sandwiched between the first substrate and the second substrate wherein, at least one of the first substrate and the second substrate is the above-mentioned thin film transistor array substrate or the above-mentioned color filter substrate.

The present invention also provides a display comprising the above-mentioned flexible display panel. The flexible display panel is a flexible LCD display panel.

In the present invention, the depth of the trench refers to the distance between the lowest point in the cross-sectional shape of the trench in the lateral trench (or the longitudinal trench) and the plane where the trench opening is located.

In the flexible substrate of the present invention, by forming a channel on the glass substrate penetrating the glass substrate and filling the channel with the filler and the elastic body, the overall bending tension of the glass substrate is reduced, and the The toughness and elasticity of the glass substrate are increased, and the bending of the glass substrate is realized. Meanwhile, by making the rectangular area enclosed by the channel on the glass substrate correspond to the pixel unit of the TFT array substrate and/or the sub-pixel unit of the CF substrate, the glass between the pixel unit and the pixel unit is eliminated. surface cohesion, thereby obtaining a flexible LCD display panel.

Description of drawings

1 is a schematic structural diagram of an existing conventional LCD display panel;

FIG. 2 is a schematic structural diagram of a flexible substrate according to an embodiment of the present invention;

3 is a top view of a glass substrate of the flexible substrate shown in FIG. 2;

Fig. 4 is A-A' sectional view in Fig. 3;

5A to 5D are partial method diagrams of FIG. 4 .

6 is a schematic structural diagram of a TFT array substrate according to an embodiment of the present invention;

7 is a schematic structural diagram of a CF substrate according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a flexible LCD display panel according to an embodiment of the present invention.

Detailed ways

Hereinafter, the technology of the present invention will be described in detail with reference to the specific embodiments. It should be understood that the following specific embodiments are only for helping those skilled in the art to understand the present invention, rather than limiting the present invention.

Referring to FIG. 2 , in this embodiment, a flexible substrate 100 is provided, which can be applied to a flexible display panel. The flexible substrate 100 includes: a glass substrate 110 , at least one layer of an elastic body 130 and a filling body 150 . The filling body 150 and the elastic body 130 may be made of the same material or different materials. When the filler 150 and the elastic body 130 are made of the same material, the flexible substrate 100 actually includes a glass substrate 110 and a layer of the elastic body 130 formed on the glass substrate 110 . Of course, for a clearer description, in this embodiment, the elastic body 130 and the filling body 150 are made of different materials. The elastic body 130 (or the filling body 150 ) is made of materials such as but not limited to polyvinyl alcohol (PVA), polyimide (PI) and the like.

The glass substrate 110 will be described in detail below with reference to FIGS. 3 , 4 , and FIGS. 5A to 5D .

As shown in FIG. 3 , the glass substrate 110 is provided with a plurality of lateral channels 112 and a plurality of longitudinal channels 114, and the plurality of lateral channels 112 and the plurality of longitudinal channels 114 intersect to form a plurality of a rectangular area 116 .

In this embodiment, the lateral channel 112 and the vertical channel 114 have the same structure, and only the lateral channel 112 is used as an example for explanation.

As shown in FIG. 4 , the lateral channel 112 penetrates the glass substrate 110 . A portion of the lateral channel 112 fills the filler 150 to form a trench 118 . 5A to 5D are partial enlarged views of FIG. 4, showing several grooves 118 with different cross-sectional shapes. As shown in FIGS. 5A to 5D , the cross-sectional shape of the groove 118 is, for example, but not limited to, rectangle ( FIG. 5A ), triangle ( FIG. 5B ), trapezoid ( FIG. 5C ) or arcuate ( FIG. 5D ). Of course, those skilled in the art should know that the cross-sectional shape of the groove 118 is not limited to the shapes listed in FIG. 5A to FIG. 5D in this embodiment, and different cross-sectional shapes can also be formed according to the requirements of the glass substrate 110 and the actual curvature. of the groove 118. The groove 118 is then filled with the elastomer 130 .

The depths of the grooves 118 are different according to different compositions of the glass substrate 110 . That is, the depth of the grooves 118 is determined by the flexibility of the glass substrate 110 . The trenches 118 in each of the plurality of lateral channels 112 have the same depth.

In an embodiment of the present invention, the opening width of the groove 118 is set differently according to the actual resolution of the display panel. The trenches 118 in each of the plurality of lateral channels 114 have the same opening width.

The arrangement of the filler 150 is used to further improve the toughness of the glass substrate 110 , so the filler 150 has elasticity.

In addition, in this embodiment, the glass substrate 110 is etched by a known method to form the lateral channel 112 as shown in FIG. 4 and FIGS. 5A to 5D , within the lateral channel 112 The filling body 150 is filled, and finally a layer of elastic body 130 is formed on the glass substrate 110 to finally obtain the flexible substrate 100 as shown in FIG. 2 .

As shown in FIG. 6 , this embodiment further provides a TFT array substrate 200 . The TFT array substrate 200 includes the flexible substrate 100 and has a conventional structure known in the art. A plurality of pixel units 210 are formed by a plurality of data lines D1 to D4 and a plurality of scan lines G1 to G4 on the elastic body. The pixel units 210 are formed within each rectangular area 116 (reference numerals shown in FIG. 3 ) corresponding to the glass substrate. Those skilled in the art can understand that the TFT array substrate 200 forms a TFT device 211 in each of the pixel units 210 .

As shown in FIG. 7 , the present embodiment further provides a color filter substrate 300 . The color filter substrate 300 includes the flexible substrate 100 and has a conventional structure known in the art, such as a plurality of sub-pixels arranged in an array. The unit 310 (including: R color resistance, G color resistance, and B color resistance) forms a plurality of sub-pixel units 310 distributed in an array on the elastic body 130 (see FIG. 2 ) of the flexible substrate 100 . The sub-pixel unit 310 corresponds to a rectangular area 116 of the glass substrate (see FIG. 3 for reference numerals). For example, an R color resist is formed on a rectangular area 116 of the elastic body 130 (see FIG. 2 ) corresponding to the glass substrate.

As shown in FIG. 8 , the present embodiment further provides a flexible LCD display panel 400 , including a first substrate 410 and a second substrate 420 disposed opposite to each other, and sandwiched between the first substrate 410 and the second substrate 420 A liquid crystal layer 430 in between. At least one of the first substrate 410 and the second substrate 420 is the above-mentioned thin film transistor array substrate 200 or the above-mentioned color filter substrate 300 .

Of course, those skilled in the art can understand that this embodiment can also provide a display, the display includes the above-mentioned thin film transistor array substrate 200 or the above-mentioned color filter substrate 300 , or includes the above-mentioned display panel 400 .

In the flexible substrate of the present invention, by forming a channel on the glass substrate penetrating the glass substrate and filling the channel with the filler and the elastic body, the overall bending tension of the glass substrate is reduced, and the The toughness and elasticity of the glass substrate are increased, and the bending of the glass substrate is realized. Meanwhile, by making the rectangular area enclosed by the channel on the glass substrate correspond to the pixel unit of the TFT array substrate and/or the sub-pixel unit of the CF substrate, the glass between the pixel unit and the pixel unit is eliminated. surface cohesion, thereby obtaining a flexible LCD display panel.

The present invention has been described by the above-mentioned related embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the invention. Rather, modifications and equivalent arrangements included within the spirit and scope of the claims are intended to be included within the scope of the invention.

Claims (9)

1. A flexible substrate for a display panel, the flexible substrate comprising:

the glass substrate is provided with a plurality of transverse channels and a plurality of longitudinal channels, and the transverse channels and the longitudinal channels are intersected to form a plurality of rectangular areas; and the transverse channels and the longitudinal channels penetrate through the glass substrate,

a filler partially filling the lateral and longitudinal channels to form a trench in both the lateral and longitudinal channels, an

At least one layer of elastomer, the elastomer is formed on one surface of the glass substrate and covers the glass substrate so as to completely fill the grooves in the transverse channels and the longitudinal channels.

2. The flexible substrate of claim 1, wherein the filler and the elastomer are made of the same material or different materials.

3. The flexible substrate of claim 1 or 2, wherein the grooves have a cross-sectional shape that is rectangular, triangular, trapezoidal, or arcuate.

4. A flexible display panel comprising at least one flexible substrate according to claim 1.

5. The flexible display panel of claim 4, wherein the flexible display panel comprises a thin film transistor array substrate, wherein the thin film transistor array substrate comprises a plurality of pixel cells, wherein a pixel cell is formed in a rectangular region of the glass substrate of the flexible substrate, and wherein a thin film transistor device is formed in each pixel cell.

6. The flexible display panel according to claim 5, wherein the flexible substrate further comprises at least one layer of elastomer, the elastomer is formed on one surface of the glass substrate and covers the glass substrate, and the pixel unit of the thin film transistor array substrate is formed on the elastomer.

7. The flexible display panel according to claim 6, wherein the flexible display panel comprises a color filter substrate, wherein the color filter substrate has a plurality of sub-pixel units arranged in an array, and a sub-pixel unit is formed in a rectangular region of the glass substrate of the flexible substrate.

8. The flexible display panel according to claim 7, wherein the flexible substrate further comprises at least one layer of elastomer, the elastomer is formed on one surface of the glass substrate and covers the glass substrate, and the sub-pixel units of the color filter substrate are formed on the elastomer.

9. A display device comprising a flexible display panel according to claim 4.

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