TW202008041A - Curved display panel and manufacturing method of the same - Google Patents

Abstract

A curved display panel includes a first substrate, a second substrate, and liquid crystal molecules between the first substrate and the second substrate. The first substrate includes a first base and auxiliary spacers on the first base. The second substrate includes a second base, a passivation layer on the second base, and pixel units between the second base and the passivation layer in a display area. The auxiliary spacers correspond to the passivation layer to form accommodating spaces respectively. Each pixel unit includes a thin film transistor and a pixel electrode electrically connected to the thin film transistor. Each auxiliary spacer is in a peripheral area and does not overlap with each pixel unit. The first substrate and the second substrate are curved. A manufacturing method of the curved display panel is also provided.

Description

Curved display panel and manufacturing method thereof

The invention relates to a display panel and a manufacturing method thereof, and particularly relates to a curved display panel and a manufacturing method thereof.

With the advancement of technology, the application of curved display panels is becoming more and more widespread. For example, curved display panels have been widely used in wearable devices, mobile phones, and televisions. The devices often used in life can be equipped with curved display panels, which also represents the great market potential of curved display panels. The curved display panel includes a convex display panel and a concave display panel. The display surface of the convex display panel is convex toward the user. The display surface of the concave display panel is convex in a direction away from the user.

In the manufacturing process of the existing curved display panel, a force is applied to the ultra-thin glass (thickness is about 0.1-0.05 mm) substrate, and due to the flexibility of the ultra-thin glass substrate, the panel generates a predetermined curvature. However, during the above-mentioned force application process, the bending stress generated by the curved display panel causes the liquid crystal to be pushed to the sides or the periphery of the curved display panel, such as the left and right sides or four corners of the curved display panel. As a result, the distribution of the amount of liquid crystal is uneven, and an abnormal liquid crystal layer gap (cell gap) and mura (mura) phenomenon occur, resulting in poor display quality of the curved display panel.

A method for manufacturing a curved display panel according to an embodiment of the present invention includes the following steps: providing a first substrate including a first substrate and a plurality of auxiliary spacers on the first substrate; providing a second substrate including the second substrate and the first Two flat layers are located on the second substrate; combining the first substrate and the second substrate to form a plurality of front spaces between the auxiliary spacers and the flat layer; forming a plurality of liquid crystal molecules between the first substrate and the second substrate Constitute a basic panel; and perform a deformation program on the basic panel, so that the front space is converted into multiple accommodation spaces. The opening width of each accommodating space is larger than the opening width of each pre-space. A part of the liquid crystal molecules are located in at least one of the accommodating spaces.

。L為曲面顯示面板彎曲的長度。T為第一基底或第二基底其中任一者的厚度，且第一基底與第二基底的厚度相同。R為曲面顯示面板彎曲的曲率。In an embodiment of the invention, the two adjacent auxiliary spacers are separated by a distance D. The distance D is greater than the amount of misalignment M between the first substrate and the second substrate. The amount of misalignment M is defined by relational formula 1: [relational formula 1]

. L is the curved length of the curved display panel. T is the thickness of either the first substrate or the second substrate, and the first substrate and the second substrate have the same thickness. R is the curvature of the curved display panel.

A curved display panel according to an embodiment of the present invention includes a first substrate, a second substrate, and a plurality of liquid crystal molecules located between the first substrate and the second substrate. The first substrate includes a first base and a plurality of auxiliary spacers located on the first base. The second substrate includes a second substrate, a flat layer on the second substrate, and a plurality of pixel units between the second substrate and the flat layer and in the display area. These auxiliary spacers correspond to the flat layer to form a plurality of accommodating spaces. Each pixel unit includes a thin film transistor and a pixel electrode electrically connected to the thin film transistor. Each auxiliary spacer is located in the peripheral area and does not overlap with each pixel unit. The first substrate and the second substrate are curved.

In the curved display panel and manufacturing method thereof according to an embodiment of the present invention, since the plurality of auxiliary spacers correspond to the flat layer to form a plurality of accommodating spaces in the peripheral area, the accommodating space can be accommodated to move from the display area to the Liquid crystal molecules in the surrounding area. In this way, the problem of uneven distribution of liquid crystal molecules in the curved display panel can be adjusted through the accommodating space, and the locally abnormal liquid crystal layer gap in the curved display panel can be avoided. In addition, the speckle phenomenon of the curved display panel can be reduced to improve the display quality of the curved display panel.

One of the objectives of the present invention is to mediate the problem of uneven liquid crystal distribution in curved display panels.

One of the objectives of the present invention is to avoid local abnormal liquid crystal layer gaps in curved display panels.

One of the objectives of the present invention is to reduce the speckle phenomenon of curved display panels.

One of the objectives of the present invention is to maintain the support requirements of curved display panels.

One of the objectives of the present invention is to improve the display quality of curved display panels.

One of the objects of the present invention is to constitute a liquid crystal storage space.

One of the objects of the present invention is to apply to a curved display panel with a narrow frame.

In order to make the above-mentioned features and advantages of the present invention more obvious and understandable, the embodiments are specifically described below in conjunction with the accompanying drawings for detailed description as follows.

FIG. 1A is a schematic top view of a base panel according to an embodiment of the present invention. For convenience of explanation and observation, FIG. 1A omits some drawing components. FIG. 1B is a schematic cross-sectional view of the basic panel of FIG. 1A along section line A-A'. FIG. 2A is a schematic top view of a curved display panel according to an embodiment of the present invention. For convenience of explanation and observation, FIG. 2A omits some components. Fig. 2B is a cross-sectional view of the curved display panel of Fig. 2A along the section line B-B'. Please refer to FIGS. 1A and 1B first. In this embodiment, the manufacturing method of the curved display panel 20 (shown in FIGS. 2A and 2B) includes: providing the first substrate 100. The first substrate 100 includes a first base 110 and a plurality of auxiliary spacers 120 located on the first base 110. In this embodiment, the auxiliary spacer 120 is located in the peripheral area 14, and the first substrate 100 further includes a plurality of support spacers 160 located in the display area 12. In this embodiment, the peripheral area 14 surrounds the display area 12. In this embodiment, the material of the first substrate 110 is, for example, glass, quartz, organic polymer, or other applicable materials. However, the invention is not limited thereto.

In this embodiment, the first substrate 100 is exemplified by a transparent substrate or a color filter substrate. Taking the color filter substrate as an example, a light shielding layer and/or a color filter layer 130 and a protective layer 140 may be interposed between the first base 110 and the auxiliary spacer 120, but the invention is not limited thereto.

Next, the second substrate 200 is provided. The second substrate 200 includes a second base 210 and a flat layer 240 on the second base 210. In this embodiment, the material of the second substrate 210 is, for example, glass, quartz, organic polymer, or other applicable materials. However, the invention is not limited thereto.

In this embodiment, the second substrate 200 is an array substrate, in which insulating layers 220 and 230 may be interposed between the second base 210 and the flat layer 240. The materials of the insulating layers 220 and 230 include silicon oxide, silicon nitride, silicon oxynitride, or a stacked layer of at least two materials, but the invention is not limited thereto. The material of the flat layer 240 includes organic materials, such as photosensitive polyimide resin, phenolic epoxy acrylic resin, or other suitable materials, but the invention is not limited thereto.

In this embodiment, the second substrate 200 further includes a plurality of pixel units PX located between the second substrate 210 and the flat layer 240. For example, the pixel unit PX is disposed on the second substrate 210, is covered by one of the insulating layers 220, 230, and is located in the display area 12. In this embodiment, the pixel unit PX includes a thin film transistor TFT and a pixel electrode PE electrically connected to the thin film transistor TFT. The thin film transistor TFT is exemplified by a bottom gate thin film transistor (bottom gate TFT), a top gate thin film transistor (top gate TFT), or other suitable types of thin film transistors, and the invention is not limited thereto.

Next, a plurality of liquid crystal molecules LC are formed between the first substrate 100 and the second substrate 200 and the first substrate 100 and the second substrate 200 are combined to constitute the base panel 10. A plurality of liquid crystal molecules LC constitute a liquid crystal layer. In this embodiment, before the step of forming these liquid crystal molecules LC, it further includes forming a sealant 180 between the first substrate 100 and the second substrate 200. For example, the sealant 180 is located in the peripheral area 14, and each auxiliary spacer 120 does not overlap the sealant 180. The base panel 10 and the curved display panel 20 in the following embodiments of the present invention use liquid crystal molecules LC as the display medium, but the present invention is not limited thereto. In other embodiments, electrophoretic display media or other applicable display media can also be selectively used, and the invention is not limited thereto.

It is worth noting that, in this embodiment, during the step of combining the first substrate 100 and the second substrate 200, a plurality of front spaces 310 may be formed between the auxiliary spacer 120 and the flat layer 240. Specifically, in the peripheral region 14, each auxiliary spacer 120 has a groove 122, and the flat layer 240 has a plurality of concave portions 242 corresponding to the grooves 122, that is, the groove 122 and the concave portion 242 are opposed to and communicate with each other, These front spaces 310 are formed separately. In this embodiment, these front spaces 310 may be selectively located on the left or right side, the upper or lower side of the base panel 10, and/or all sides. In other embodiments, these front spaces 310 may be located in at least one corner of the base panel 10, for example, four corners, and the invention is not limited thereto. Since the groove 122 of the auxiliary spacer 120 is located in the concave portion 242 of the flat layer 240 and the auxiliary spacer 120 abuts to the second substrate 200, the opening width of the front space 310 is 0 μm. In other words, the front space 310 formed by the recess 122 and the recess 242 does not have any openings, and in fact each front space 310 is a closed space. However, the present invention is not limited to this. In other embodiments, the front space has a very small opening. Under the above design, the auxiliary spacer 120 in the formed base panel 10 can provide support requirements for the base panel 10 and maintain the liquid crystal layer gap of the substrate (cell gap).

Then, please refer to FIG. 1A, FIG. 1B, FIG. 2A, and FIG. 2B to perform a deformation process on the base panel 10. For example, the deformation procedure applies a force to the base panel 10 to bend the base panel 10 and form a curved display panel 20. The curved display panel 20 of this embodiment takes the curved display panel 20 curved in the z-axis direction as an example. For example, as shown in FIG. 2A, the curved display panel 20 is a concave display panel, and its display surface is convex away from the user, but the invention is not limited thereto. In other embodiments, the curved display panel 20 may also be a convex display panel whose display surface is convex toward the user. In this embodiment, the rectangular curved display panel 20 has a long side 22 that extends and curves along the x-axis direction and a short side (not labeled) that extends along the y-axis direction, and the x-axis is perpendicular to the y-axis. In other words, the long side 22 is a curved display panel 20 with curved and/or curved sides. In this embodiment, the long side 22 has a length L. In other words, the length L is the curved length of the curved display panel 20. However, the present invention is not limited to this. In other embodiments, the curved display panel has a short side extending along the x-axis direction and a long side extending along the y-axis direction.

，其中L為曲面顯示面板20彎曲的長度，T為第一基底110’或第二基底210’其中任一者的厚度，且第一基底110’與第二基底210’的厚度相同，R為曲面顯示面板20的曲率。Please refer to FIGS. 2A and 2B. In this embodiment, the curved display panel 20 after bending has a misalignment amount M formed between the first substrate 100 ′ and the second substrate 200 ′. The amount of misalignment M is defined by relational formula 1: [Relational formula 1]

, Where L is the curved length of the curved display panel 20, T is the thickness of either the first substrate 110' or the second substrate 210', and the first substrate 110' and the second substrate 210' have the same thickness, and R is The curvature of the curved display panel 20.

It is worth noting that due to the misalignment between the first substrate 100' and the second substrate 200', the groove 122' of the auxiliary spacer 120 may be staggered in the concave portion 242' of the flat layer 240. In this way, these pre-spaces 310 are respectively transformed into a plurality of accommodation spaces 320. In detail, as shown in FIGS. 1B and 2B, in the process of bending the base panel 10 to form the curved display panel 20, the closed front space 310 formed by the recess 122 and the recess 242 in the peripheral area 14, It will be transformed into an open accommodating space 320 formed by the groove 122' and the concave portion 242' through misalignment. The groove 122' and the concave portion 242' are opposed to and communicate with each other, and the groove 122' and the concave portion 242' will be formed The opening 322 communicates with the accommodating space 320. The opening width of the accommodating space 320 is greater than the opening width of each pre-space 310. The example of the opening size of the accommodating space 320 is larger than the opening size of each pre-space 310, but the invention is not limited thereto. Under the above-mentioned design, a part of the liquid crystal molecules LC can enter each of the open accommodating spaces 320 through the opening 322 and be located in at least one of the accommodating spaces 320. As such, when the bending stress applied to the curved display panel 20 pushes the liquid crystal molecules LC from the display area 12 to the peripheral regions 14 on both sides or four corners of the curved display panel 20, the accommodating spaces 320 can accommodate the liquid crystal molecules LC In order to adjust the problem of uneven distribution of liquid crystal molecules LC in the curved display panel 20, and to avoid local abnormal liquid crystal layer gaps in the curved display panel 20. In addition, the speckle phenomenon of the curved display panel 20 can be reduced to improve the display quality of the curved display panel 20.

The structure of the curved display panel 20 according to an embodiment of the present invention will be briefly described below using the above embodiment as an example.

2A and 2B, the curved display panel 20 of this embodiment includes a first substrate 100', a second substrate 200', and a plurality of liquid crystal molecules LC located between the first substrate 100' and the second substrate 200'. The first substrate 100' includes a first base 110' and a plurality of auxiliary spacers 120 located on the first base 110'. The second substrate 200' includes a second substrate 210', a flat layer 240 on the second substrate 210', and a plurality of pixel units PX between the second substrate 210' and the flat layer 240 and in the display area 12. In this embodiment, the auxiliary spacer 120 corresponds to the flat layer 240 to form a plurality of accommodating spaces 320. In addition, each pixel unit PX includes a thin film transistor TFT and a pixel electrode PE electrically connected to the thin film transistor TFT. Each auxiliary spacer 120 is located in the peripheral area 14 and does not overlap with each pixel unit PX. 1B and 2B, in this embodiment, the first substrate 100 and the second substrate 200 of the base panel 10 are planar, and the first substrate 100' and the second substrate 200' of the curved display panel 20 are It is curved.

倍，且深度H2等於或小於輔助間隙物120的高度H1。凹部242的深度H3等於或大於平坦層340的高度H4的

，且深度H3等於或小於平坦層240的高度H4，但本發明不以此為限。FIG. 3A is a schematic top view and a side view of a front space formed by a base panel before a deformation process according to an embodiment of the invention. FIG. 3B is a schematic diagram of a top view and a side view of an accommodating space formed by a curved display panel according to an embodiment of the present invention after a deformation process. Please refer to FIGS. 1B and 3A first. In this embodiment, the width W1 of each auxiliary spacer 120 is greater than the width W2 of the concave portion 242, and the width W2 of the concave portion 242 is greater than the width W3 of the groove 122. For example, the width W1 of each auxiliary spacer 120 is 10 μm to 50 μm, the width W3 of the groove 122 is 2 μm to 42 μm, and the width W2 of the recess 242 is 6 μm to 46 μm, but the present invention does not use this Limited. In addition, the height H1 of each auxiliary spacer 120 is 2 μm to 4 μm, the depth H2 of the groove 122 is 0.5 μm to 4 μm, the depth H3 of the recess 242 is 0.25 μm to 3 μm, and the height H4 of the flat layer 240 is 1 micron to 3 microns, but the invention is not limited to this. In this embodiment, the design of the auxiliary spacers 120, the grooves 122, and the recesses 242 can be adjusted according to the liquid crystal requirements of the curved display panel 20 with different curvatures. For example, the depth H2 of the groove 122 is equal to or greater than the height H1 of the auxiliary spacer 120

Times, and the depth H2 is equal to or less than the height H1 of the auxiliary spacer 120. The depth H3 of the concave portion 242 is equal to or greater than the height H4 of the flat layer 340

And the depth H3 is equal to or less than the height H4 of the flat layer 240, but the invention is not limited thereto.

d1。在上述的設計下，以基礎面板10為例，錯位前的輔助間隙物120的側壁抵接平坦層240的重疊寬度K2之寬d2為

d1。也就是說，若以側視圖觀察，上述左側壁與右側壁重疊平坦層240的重疊寬度K2之寬d2之總和為d1。以本實施例中的曲面顯示面板20為例，若以側視圖觀察，錯位後的輔助間隙物120的左側壁完全抵接平坦層240，而右側壁完全不抵接平坦層240，因此輔助間隙物120的側壁與平坦層240重疊的寬度所定義的重疊寬度K2’之寬d2’等於間距K1之長度d1，也就是說，d2’=d1。藉此，在基礎面板10或曲面顯示面板20中，錯位前的輔助間隙物120與平坦層240的重疊寬度K2之寬d2之總和與錯位後的重疊寬度K2’之寬d2’可以相同，均等於間距K1的長度d1。如此，輔助間隙物120可以提供基礎面板10與曲面顯示面板20相同的支撐需求，亦即輔助間隙物120可以提供彎折前後實質上相同的支撐需求，維持第一基板100、100’與第二基板200、200’之間的液晶層間隙。It is worth noting that please refer to FIGS. 3A and 3B. In this embodiment, the groove 122 and the concave portion 242 on the base panel 10 form a closed front space 310. After performing the deformation process, the groove 122 ′ and the concave portion 242 ′ on the curved display panel 20 will form an opening 322 due to misalignment and constitute an open receiving space 320. In this embodiment, the auxiliary spacer 120 can abut against the second substrates 200 and 200 ′ and provide support requirements for the base panel 10 or the curved display panel 20 to maintain the liquid crystal layer gap between the substrates. For example, the difference between the width W1 of each auxiliary spacer 120 and the width W3 of the groove 122 may define the pitch K1 as the width of the side wall, and the width of the side wall of each auxiliary spacer 120 overlapping the flat layer 240 may be defined The overlapping width K2 is used as the width of the side wall abutting the flat layer 240. The length d1 of the pitch K1 is about 4 μm to 20 μm, and the width d2 of the overlap width K2 is about 2 μm to 10 μm, but the invention is not limited to this. The overlap width K2 is at least half of the pitch K1. For example, d2=

d1. Under the above design, taking the base panel 10 as an example, the width d2 of the overlapping width K2 of the side wall of the auxiliary spacer 120 before the dislocation is in contact with the flat layer 240 is

d1. In other words, when viewed in a side view, the sum of the widths d2 of the overlapping widths K2 of the overlapping layers of the left and right walls with the flat layer 240 is d1. Taking the curved display panel 20 in this embodiment as an example, if viewed from a side view, the left side wall of the misaligned auxiliary spacer 120 completely abuts the flat layer 240, while the right side wall does not abut the flat layer 240 at all, so the auxiliary gap The width d2′ of the overlap width K2′ defined by the width of the overlap between the sidewall of the object 120 and the flat layer 240 is equal to the length d1 of the pitch K1, that is, d2′=d1. Thus, in the base panel 10 or the curved display panel 20, the sum of the width d2 of the overlapping width K2 of the auxiliary spacer 120 and the flat layer 240 before the dislocation and the width d2' of the overlapping width K2' after the dislocation can be the same, both It is equal to the length d1 of the pitch K1. As such, the auxiliary spacer 120 can provide the same support requirements as the base panel 10 and the curved display panel 20, that is, the auxiliary spacer 120 can provide substantially the same support requirements before and after bending, maintaining the first substrate 100, 100' and the second The liquid crystal layer gap between the substrates 200, 200'.

In other embodiments, there may be other film layers between the auxiliary spacer 120 and the liquid crystal layer, and other film layers between the flat layer 240 and the liquid crystal layer, but it does not substantially affect the front space 310 and the accommodating space The formation of 320.

4A is a schematic top view of an auxiliary spacer according to an embodiment of the invention. In this embodiment, as shown in FIGS. 3A and 4A, a plurality of auxiliary spacers 120 are arranged in multiple rows and columns, and the cross-sections of these auxiliary spacers 120 are circular, but the present invention is not limited to this . In this embodiment, these auxiliary spacers 120 are not connected to each other. For example, before performing the deformation procedure, the groove 122 of each auxiliary spacer 120 aligns the concave portion 242. Two adjacent auxiliary spacers 120 are separated by a distance D. In this embodiment, the distance D is greater than the amount of misalignment M between the first substrate 100' and the second substrate 200' (as shown in FIG. 2B). Under the above design, please refer to FIG. 3A and FIG. 3B, the groove 122' of the auxiliary spacer 120 after the misalignment will not be aligned to the adjacent concave portion 242', but can ensure that the closed front space 310 is turned into an open To accommodate the liquid crystal molecules LC. In this way, the problem of uneven distribution of liquid crystal molecules LC in the curved display panel 20 can be adjusted, and the locally abnormal liquid crystal layer gap in the curved display panel 20 can be avoided. In addition, the speckle phenomenon of the curved display panel 20 can be reduced to improve the display quality of the curved display panel 20.

In short, in the curved display panel 20 according to an embodiment of the present invention, since the plurality of auxiliary spacers 120 correspond to the flat layer 240 to form a plurality of accommodating spaces 320 in the peripheral area 14, they can be accommodated from the display area 12 Liquid crystal molecules LC in the peripheral region 14. In addition, there is a distance D between adjacent auxiliary spacers 120, and the distance D is greater than the amount of misalignment M. In this way, the groove 122 will not be aligned with the adjacent concave portion 242, but can ensure that the closed front space 310 is transformed into an open accommodating space 320. In this way, the accommodating space 320 can be used to adjust the uneven distribution of the liquid crystal molecules LC in the curved display panel 20, and to avoid locally abnormal liquid crystal layer gaps in the curved display panel 20. In addition, the speckle phenomenon of the curved display panel 20 can be reduced to improve the display quality of the curved display panel 20. In addition, the sum of the width d2' of the overlap width K2' of the auxiliary spacer 120 and the flat layer 240 of the curved display panel 20 after the misalignment and the sum of the width d2 of the overlap width K2 before the misalignment can be the same, both equal to the pitch K1 The length d1 can therefore provide the same support requirements for the base panel 10 and the curved display panel 20, maintaining the liquid crystal layer gap between the first substrate 100, 100' and the second substrate 200, 200.

The following embodiments continue to use the element numbers and partial contents of the previous embodiments, wherein the same reference numerals are used to denote the same or similar elements. For the description of the parts that omit the same technical content, please refer to the previous embodiments. Repeat the details.

4B is a schematic top view of an auxiliary spacer according to another embodiment of the invention. 4A and 4B, the auxiliary spacer 120A of this embodiment is similar to the auxiliary spacer 120 of FIG. 4A, the main difference is that the cross section of the auxiliary spacer 120A is square. In addition, the cross sections of the groove 122A and the concave portion 242A are also square. In this way, the auxiliary spacer 120A can obtain the same technical effects as the above-mentioned embodiment.

4C is a schematic top view of an auxiliary spacer according to another embodiment of the invention. 4A and 4C, the auxiliary spacer 120B of this embodiment is similar to the auxiliary spacer 120 of FIG. 4A, the main difference is that the cross section of the auxiliary spacer 120B is rectangular. In addition, the cross sections of the groove 122B and the concave portion 242B are also rectangular. In this way, the auxiliary spacer 120B can obtain the same technical effects as the above-mentioned embodiment.

FIG. 5A is a schematic top view of an auxiliary spacer according to another embodiment of the invention. Please refer to FIGS. 4A and 5A. The auxiliary spacer 120C of this embodiment is similar to the auxiliary spacer 120 of FIG. 4A. The main difference is that the multiple auxiliary spacers 120C are arranged in multiple rows and columns, and are adjacent to each other. The auxiliary spacers 120C in two rows are arranged in a misaligned manner. In detail, in this embodiment, two adjacent auxiliary spacers 120C are separated by a distance D', and the distance D'is a horizontal distance. In this embodiment, the distance D'is smaller than the amount of misalignment M between the first substrate 100' and the second substrate 200' (as shown in FIG. 2B). Under the above design, please refer to FIG. 3A, FIG. 3B and FIG. 5A, because the two adjacent rows of auxiliary spacers 120C are misaligned and will not be aligned, so the groove 122C of the auxiliary spacer 120C after misalignment will not align Located in the adjacent concave portion 242C, the closed front space 310 can be ensured to be converted into an open accommodating space 320 to accommodate the liquid crystal molecules LC. In this way, more accommodating space 320 can be formed in the peripheral area 14 and/or applied to the curved display panel 20 with a narrow bezel to mediate the uneven distribution of liquid crystal molecules LC in the curved display panel 20 and avoid the curved display panel 20. Partially abnormal liquid crystal layer gap. In addition, the speckle phenomenon of the curved display panel 20 can be reduced to improve the display quality of the curved display panel 20. In other embodiments, the distance D'may also be equal to or greater than the amount of misalignment M, which is not limited in the present invention.

5B is a schematic top view of an auxiliary spacer according to another embodiment of the invention. 5A and 5B, the auxiliary spacer 120D of this embodiment is similar to the auxiliary spacer 120C of FIG. 5A, the main difference is that the cross section of the auxiliary spacer 120D is square. In addition, the cross sections of the groove 122D and the concave portion 242D are also square. In this way, the auxiliary spacer 120D can obtain the same technical effects as the above-mentioned embodiment.

5C is a schematic top view of an auxiliary spacer according to another embodiment of the invention. 5A and 5C, the auxiliary spacer 120E of this embodiment is similar to the auxiliary spacer 120C of FIG. 5A, the main difference is that the cross section of the auxiliary spacer 120E is rectangular. In addition, the cross sections of the groove 122E and the concave portion 242E are also rectangular. In this way, the auxiliary spacer 120E can achieve the same technical effects as the above-mentioned embodiment.

6A is a schematic top view and a side view of a front space formed by a base panel before a deformation process according to another embodiment of the invention. 6B is a schematic cross-sectional view of a curved display panel according to another embodiment of the invention. Please refer to FIGS. 3A and 6A and FIGS. 2B and 6B at the same time. The curved display panel 20A of this embodiment is similar to the display panel 20 of FIG. 2B. The main difference is that the auxiliary spacer 120F does not have a groove. In detail, before the deformation process is performed, the flat layer 240 has a plurality of concave portions 242 corresponding to the plurality of auxiliary spacers 120F to respectively constitute a plurality of pre-spaces 310A. It should be noted here that FIG. 6A only schematically illustrates a front space 310A, but those skilled in the art of the present invention should understand that each auxiliary spacer 120F corresponds to the flat layer 240 to form multiple front spaces. Set space 310A.

，且深度H3等於或小於平坦層240的高度H4。In this embodiment, the width W1A of each auxiliary spacer 120F is larger than the width W2 of the recess. For example, the width W1A of each auxiliary spacer 120F is 10 μm to 50 μm, and the width W2 of the concave portion 242 is 6 μm to 46 μm, but the invention is not limited thereto. In addition, the height H1A of each auxiliary spacer 120F is 2 μm to 4 μm, the depth H3 of the concave portion 242 is 0.25 μm to 3 μm, and the height H4 of the flat layer 240 is 1 μm to 3 μm, but the present invention does not use this as limit. In this embodiment, the design of each auxiliary spacer 120F and the concave portion 242 can be adjusted according to the liquid crystal requirements of the curved display panel 20A with different curvatures. For example, the depth H3 of the concave portion 242 is equal to or greater than the height H4 of the flat layer 240

And the depth H3 is equal to or less than the height H4 of the flat layer 240.

In this embodiment, the auxiliary spacer 120F can abut against the second substrate 200' and provide support requirements for the curved display panel 20A, maintaining the liquid crystal layer gap between the substrates. For example, the difference between the width W1A of each auxiliary spacer 120F and the width W2 of the concave portion 242 may define the pitch K1A, and the width of each auxiliary spacer 120F abutting the flat layer 240 may define the overlap width K2A. In this embodiment, the length d1A of the pitch K1A is about 2 μm to 20 μm, and the width d2A of the overlap width K2A is about 2 μm to 20 μm, but the invention is not limited to this. The overlap width K2A is equal to or greater than the pitch K1A, for example, d2A=d1A. Under the above-mentioned design, the width d2A of the overlap width K2A of the auxiliary spacer 120F before dislocation abuts against the flat layer 240 is the same as the length d1A of the pitch K1A, respectively. In this embodiment, as shown in FIG. 6B, after the deformation procedure is performed, since the amount of misalignment M between the first substrate 100A' and the second substrate 200' may be greater than the length d1A of the pitch K1A, the first substrate 100A' A misalignment occurs with the second substrate 200'. Thereby, the width d2A' of the overlap width K2A' of the auxiliary spacer 120F after the misalignment with the flat layer 240 can be increased to be greater than the length d1A of the pitch K1A. In this way, the overlap width K2A' of the auxiliary spacer 120F after misalignment with the flat layer 240 may be greater than the overlap width K2A before misalignment, so that the support requirement of the curved display panel 20A can be further provided to maintain the first substrate 100A' and the second substrate Liquid crystal layer gap between 200'

In addition, after the transformation procedure is performed, the front space 310A can be transformed into the accommodation space 320A. As shown in FIG. 6B, a receiving space 320A having an opening 322A is formed between the auxiliary spacer 120F and the concave portion 242'. Under the above-mentioned design, a part of these liquid crystal molecules LC can enter each of the open accommodating spaces 320A through the opening 322A and be located in at least one of the accommodating spaces 320A. In this way, the curved display panel 20A can obtain the same technical effects as the above embodiment.

7A is a schematic diagram of a top view and a side view of a front space formed by a base panel before a deformation process according to another embodiment of the present invention. 7B is a schematic cross-sectional view of a curved display panel according to another embodiment of the invention. Please refer to FIGS. 3A and 7A and FIGS. 2B and 7B at the same time. The curved display panel 20B of this embodiment is similar to the curved display panel 20 of FIG. 2B. The main difference is that the flat layer 240G has a plurality of convex portions 242G. In detail, before the deformation process is performed, the flat layer 240G has a plurality of convex portions 242G corresponding to the grooves 122G of the plurality of auxiliary spacers 120G to respectively constitute a plurality of pre-spaces 310B. It should be noted that FIG. 7A only schematically illustrates a front space 310B, but those skilled in the art of the present invention should understand that each auxiliary spacer 120G corresponds to the convex portion 242G to form multiple front spaces. Set space 310B.

倍，且深度H2B等於或小於輔助間隙物120G的高度H1B，但本發明不以此為限。在本實施例中，輔助間隙物120G的高度H1B與凸部242G的高度H3B之總和實質上為第一基板100B’與第二基板200B’之間的液晶層間隙，但本發明不以此為限。In this embodiment, the width W1B of each auxiliary spacer 120G is greater than the width W2B of the convex portion 242G, and the width W2B of the convex portion 242G is greater than the width W3B of the groove 122G. For example, the width W1B of each auxiliary spacer 120G is 10 μm to 50 μm, the width W3B of the groove 122G is 2 μm to 42 μm, and the width W2B of the convex portion 242G is 6 μm to 46 μm, but the present invention does not This is limited. In addition, the height H1B of each auxiliary spacer 120G is 1 μm to 3 μm, the depth H2B of the groove 122G is 0.25 μm to 3 μm, the height H3B of the convex portion 242G is 0.2 μm to 1 μm, and the height H4 of the flat layer 240G It is 1 micrometer to 3 micrometers, but the invention is not limited thereto. In this embodiment, the design of the auxiliary spacers 120G, the grooves 122G, and the convex portions 242G can be adjusted according to the liquid crystal requirements of the curved display panel 20B with different curvatures. For example, the depth H2B of the groove 122G is equal to or greater than the height H1B of the auxiliary spacer 120G

Times, and the depth H2B is equal to or less than the height H1B of the auxiliary spacer 120G, but the invention is not limited thereto. In this embodiment, the sum of the height H1B of the auxiliary spacer 120G and the height H3B of the convex portion 242G is substantially the liquid crystal layer gap between the first substrate 100B' and the second substrate 200B', but the present invention does not use this as limit.

d1B。在上述的設計下，錯位前的輔助間隙物120G的側壁抵接凸部242G的重疊寬度K2B之寬d2B為

d1B。也就是說，若以側視圖觀察，左側壁與右側壁抵接凸部242G的重疊寬度K2B之寬d2B之總和為d1B。在本實施例中，如圖6B所示，在執行變形程序後，由於第一基板100B’與第二基板200B’之間的錯位量M可以大於間距K1B之長度d1B，藉此，錯位後的輔助間隙物120G的右側壁完全抵接凸部242G，而左側壁完全不抵接凸部242G，因此輔助間隙物120G與凸部242G抵接的寬度所定義的重疊寬度K2B’之寬d2B’等於間距K1B之長度d1B，也就是說，d2B’=d1B。如此，錯位前的輔助間隙物120G與凸部242G的重疊寬度K2B之寬d2B之總和與錯位後的重疊寬度K2B’之寬d2B’ 之總和可以相同，均等於間距K1B的長度d1B。如此，輔助間隙物120G在錯位前後均可提供曲面顯示面板20B相同的支撐需求，維持第一基板100B’與第二基板200B’之間的液晶層間隙。In this embodiment, the auxiliary spacer 120G can abut against the convex portion 242G of the flat layer 24G0 and provide support requirements for the curved display panel 20B, maintaining the liquid crystal layer gap between the substrates. For example, the difference between the width W1B of each auxiliary spacer 120G and the width W3B of the groove 122G may define the pitch K1B, and the width of the contact between each auxiliary spacer 120G and the convex portion 242G may define the overlap width K2B. In this embodiment, the length d1B of the pitch K1B is about 4 μm to 20 μm, and the width d2B of the overlap width K2B is about 2 μm to 10 μm, but the invention is not limited thereto. The overlap width K2B is at least half of the pitch K1B, for example, d2B=

d1B. Under the above design, the width d2B of the overlapping width K2B of the side wall abutting protrusion 242G of the auxiliary spacer 120G before the displacement is

d1B. In other words, when viewed in a side view, the sum of the widths d2B of the overlapping widths K2B of the left and right wall contacting convex portions 242G is d1B. In this embodiment, as shown in FIG. 6B, after the deformation process is performed, since the amount of misalignment M between the first substrate 100B' and the second substrate 200B' can be greater than the length d1B of the pitch K1B, The right side wall of the auxiliary spacer 120G completely abuts the convex portion 242G, and the left side wall does not completely abut the convex portion 242G, so the width d2B' of the overlap width K2B' defined by the width of the auxiliary gap 120G and the convex portion 242G abutting is equal to The length d1B of the pitch K1B, that is, d2B'=d1B. In this way, the sum of the width d2B of the overlap width K2B of the auxiliary spacer 120G and the convex portion 242G before the misalignment and the sum of the width d2B' of the overlap width K2B′ after the misalignment may be the same, both equal to the length d1B of the pitch K1B. In this way, the auxiliary spacer 120G can provide the same support requirements for the curved display panel 20B before and after the misalignment, and maintain the liquid crystal layer gap between the first substrate 100B' and the second substrate 200B'.

In addition, after the transformation procedure is performed, the front space 310B can be transformed into the accommodation space 320B. As shown in FIG. 7B, a receiving space 320B having an opening 322B is formed between the auxiliary spacer 120G and the convex portion 242G. Under the above design, a part of the liquid crystal molecules LC may enter the open accommodating space 320B through the opening 322B, and be located in at least one of the accommodating spaces 320B. In this way, the curved display panel 20B can obtain the same technical effects as the above embodiment.

In summary, according to an embodiment of the present invention, a curved display panel and a method for manufacturing the same Zone of liquid crystal molecules. In addition, there is a distance between adjacent auxiliary spacers, and the distance is greater than the amount of misalignment. In this way, the groove will not be aligned to the adjacent concave portion, but can ensure that the closed front space is transformed into an open accommodating space. In this way, the problem of uneven distribution of liquid crystal molecules in the curved display panel can be adjusted through the accommodating space, and the locally abnormal liquid crystal layer gap in the curved display panel can be avoided. In addition, the speckle phenomenon of the curved display panel can be reduced to improve the display quality of the curved display panel. In addition, since the overlap width of the auxiliary spacer and the flat layer of the curved display panel after misalignment can be the same or larger than the overlap width before misalignment, it can provide the same or better support requirements for the panel and maintain the liquid crystal layer between the substrates gap. In addition, the auxiliary spacers in the two adjacent rows can also be staggered and misaligned, so the auxiliary spacers after the misalignment will not be aligned to the adjacent recesses, but can ensure that the closed front space is converted into an open accommodation space . In this way, the distance between adjacent auxiliary spacers may be smaller than the amount of misalignment, so as to form more accommodation space in the peripheral area and/or be applied to a curved display panel with a narrow bezel.

Although the present invention has been disclosed as above with examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the scope defined in the appended patent application.

10‧‧‧Basic panel 12‧‧‧Display area 14‧‧‧ Peripheral area 20, 20A, 20B‧‧‧Curved display panel 22‧‧‧Long side 100, 100', 100A', 100B'‧‧‧ Substrate 110, 110'‧‧‧ First base 120, 120A, 120B, 120C, 120D, 120E, 120F, 120G‧‧‧Auxiliary spacers 122, 122', 122A, 122B, 122C, 122D, 122E, 122G‧‧ ‧Groove 130‧‧‧Light-shielding layer and/or color filter layer 140‧‧‧Protection layer 160‧‧‧‧Support spacer 180‧‧‧Frame glue 200, 200', 200B'‧‧‧Second substrate 210, 210'‧‧‧ Second substrate 220, 230‧‧‧ Insulation layer 240, 240G‧‧‧ Flat layer 242, 242′, 242A, 242B, 242C, 242D, 242E‧‧‧Concave portion 242G‧‧‧Convex portion 310, 310A, 310B‧‧‧ Front space 320, 320A, 320B ‧‧‧Accommodation space 322, 322A, 322B ‧‧‧ opening D, D'‧‧‧ distance d1, d2, d2', d1A, d2A, d2A' , D1B, d2B, d2B'‧‧‧ length d2, d2', d2A, d2A', d2B, d2B'‧‧‧ width H1, H1A, H1B, H3B, H4‧‧‧ height H2, H2B, H3‧‧ ‧Depth K1, K1A, K1B‧‧‧Pitch K2, K2', K2A, K2A', K2B, K2B'‧‧‧Overlap width L‧‧‧Length LC‧‧‧Liquid crystal molecule PE‧‧‧Pixel electrode PX‧ ‧‧Pixel unit R‧‧‧Curve T‧‧‧thickness TFT‧‧‧thin film transistors W1, W1A, W1B, W2, W2B, W3, W3B‧‧‧ width X, Y, Z‧‧‧ axis

FIG. 1A is a schematic top view of a base panel according to an embodiment of the invention. FIG. 1B is a schematic cross-sectional view of the basic panel of FIG. 1A along section line A-A'. 2A is a schematic top view of a curved display panel according to an embodiment of the invention. Fig. 2B is a cross-sectional view of the curved display panel of Fig. 2A along the section line B'B'. FIG. 3A is a schematic top view and a side view of a front space formed by a base panel before a deformation process according to an embodiment of the invention. FIG. 3B is a schematic diagram of a top view and a side view of an accommodating space formed by a curved display panel according to an embodiment of the present invention after a deformation process. 4A is a schematic top view of an auxiliary spacer according to an embodiment of the invention. 4B is a schematic top view of an auxiliary spacer according to another embodiment of the invention. 4C is a schematic top view of an auxiliary spacer according to another embodiment of the invention. FIG. 5A is a schematic top view of an auxiliary spacer according to another embodiment of the invention. 5B is a schematic top view of an auxiliary spacer according to another embodiment of the invention. 5C is a schematic top view of an auxiliary spacer according to another embodiment of the invention. 6A is a schematic top view and a side view of a front space formed by a base panel before a deformation process according to another embodiment of the invention. 6B is a schematic cross-sectional view of a curved display panel according to another embodiment of the invention. 7A is a schematic diagram of a top view and a side view of a front space formed by a base panel before a deformation process according to another embodiment of the present invention. 7B is a schematic cross-sectional view of a curved display panel according to another embodiment of the invention.

12‧‧‧Display area

14‧‧‧ surrounding area

20‧‧‧curved display panel

100’‧‧‧ First substrate

110’‧‧‧First base

120‧‧‧Auxiliary gap

122’‧‧‧groove

130‧‧‧ shading layer and/or color filter layer

140‧‧‧Protective layer

160‧‧‧Support gap

180‧‧‧frame glue

200’‧‧‧Second substrate

210’‧‧‧Second base

220、230‧‧‧Insulation

240‧‧‧flat layer

242’‧‧‧recess

320‧‧‧accommodating space

322‧‧‧ opening

LC‧‧‧Liquid crystal molecules

PE‧‧‧Pixel electrode

PX‧‧‧Pixel unit

T‧‧‧thickness

TFT‧‧‧thin film transistor

Z‧‧‧axis

Claims (10)

A method for manufacturing a curved display panel, comprising: providing a first substrate, comprising: a first substrate; and a plurality of auxiliary spacers on the first substrate; providing a second substrate, comprising: a second substrate; and A flat layer is located on the second base; combining the first substrate and the second substrate makes a plurality of front spaces between the auxiliary spacers and the flat layer; forming a plurality of liquid crystal molecules on the first substrate and A basic panel is formed between the second substrates; and a deformation process is performed on the basic panel, so that the front spaces are respectively converted into a plurality of accommodating spaces, wherein the opening width of each of the accommodating spaces is greater than that of each front In the opening width of the accommodation space, a part of the liquid crystal molecules is located in at least one of the accommodation spaces. The method for manufacturing a curved display panel as described in item 1 of the patent application scope, wherein the opening width of each of the front spaces is 0 μm, and each of the front spaces is a closed space, wherein the deformation procedure is to bend the basic panel . The method for manufacturing a curved display panel as described in item 1 of the patent scope, wherein the second substrate further includes a plurality of pixel units located between the second substrate and the flat layer and located in a display area, wherein each of the The auxiliary spacer is located in a peripheral area and does not overlap with each pixel unit; wherein the first substrate further includes a plurality of support spacers located in the display area. The method for manufacturing a curved display panel as described in item 1 of the patent application scope, wherein before the step of forming the liquid crystal molecules, the method further comprises: forming a sealant between the first substrate and the second substrate, each of which The auxiliary spacer does not overlap with the sealant. The method for manufacturing a curved display panel as described in item 1 of the patent scope, wherein each of the auxiliary spacers has a groove, and the flat layer has a plurality of concave portions corresponding to the grooves to form the front spaces, respectively, Wherein the width of each auxiliary spacer is greater than the width of the concave portion than the width of the groove, wherein the difference between the width of each auxiliary spacer and the width of the groove defines a distance, and one side wall of each auxiliary spacer The overlap width with the flat layer is at least half of the pitch; wherein each auxiliary spacer has a width of 10 μm to 50 μm, a width of the groove of 2 μm to 42 μm, and a width of the concave portion of 6 μm to 46 Micrometers, wherein the height of each auxiliary spacer is 2 micrometers to 4 micrometers, the depth of the groove is 0.5 micrometers to 4 micrometers, and the depth of the concave portion is 0.25 micrometers to 3 micrometers. The method for manufacturing a curved display panel as described in item 1 of the patent application range, wherein the flat layer has a plurality of concave portions corresponding to the auxiliary spacers to form the front spaces, wherein the width of each auxiliary spacer is greater than The width of the recess, wherein the difference between the width of each auxiliary spacer and the width of the recess defines a distance, and the overlapping width of each auxiliary spacer against the flat layer is equal to or greater than the distance; wherein each of the auxiliary gaps The width of the object is 10 microns to 50 microns, the width of the recess is 6 microns to 46 microns, wherein the height of each auxiliary spacer is 2 microns to 4 microns, and the depth of the recess is 0.25 microns to 3 microns. The method for manufacturing a curved display panel as described in item 1 of the patent scope, wherein each of the auxiliary spacers has a groove, and the flat layer has a plurality of convex portions corresponding to the grooves to form the front spaces, respectively , Wherein the width of each auxiliary spacer is greater than the width of the convex portion is greater than the width of the groove, wherein the difference between the width of each auxiliary spacer and the width of the groove defines a distance, and each of the auxiliary spacers The overlapping width of a side wall and each convex portion is at least half of the pitch; wherein the width of each auxiliary spacer is 10 μm to 50 μm, the width of the groove is 2 μm to 42 μm, and the width of the convex portion is 6 μm to 46 μm, wherein the height of each auxiliary spacer is 2 μm to 4 μm, the depth of each groove is 0.5 μm to 4 μm, and the height of each convex portion is 0.2 μm to 1 μm. The method for manufacturing a curved display panel as described in item 1 of the patent application scope, wherein the auxiliary spacers are not connected to each other. The method for manufacturing a curved display panel as described in item 8 of the patent application range, wherein two adjacent auxiliary spacers are separated by a distance D that is greater than a misalignment M between the first substrate and the second substrate , Where the amount of misalignment M is defined by relational formula 1: [relational formula 1]

Where L is the curved length of the curved display panel, T is the thickness of either the first substrate or the second substrate, and the first substrate and the second substrate have the same thickness, and R is the curved display panel Curved curvature, wherein the cross-section of each auxiliary spacer is circular, square or rectangular. A curved display panel includes: a first substrate including: a first substrate; and a plurality of auxiliary spacers on the first substrate; a second substrate including: a second substrate; a flat layer on the first substrate Two substrates, wherein the auxiliary spacers correspond to the flat layer to form a plurality of accommodating spaces; and a plurality of pixel units are located between the second substrate and the flat layer and in a display area, each of the pixels The cell includes a thin film transistor and a pixel electrode electrically connected to the thin film transistor, wherein each of the auxiliary spacers is located in a peripheral area and does not overlap with each of the pixel cells; and a plurality of liquid crystal molecules are located in the first Between the substrate and the second substrate, wherein the first substrate and the second substrate are curved.

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