TWI667513B - Curved display panel and manufacturing method of the same - Google Patents

Abstract

A curved display panel includes a first substrate, a second substrate, and a plurality of liquid crystal molecules between the first substrate and the second substrate. The first substrate includes a first substrate and a plurality of auxiliary spacers on the first substrate. The second substrate includes a second substrate, the planar layer is on the second substrate, and the plurality of pixel units are located between the second substrate and the planar layer and are located in the display region. 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 thin film transistor. Each of the auxiliary spacers is located in the peripheral area and does not overlap with each pixel unit. The first substrate and the second substrate are curved. A method of fabricating a curved display panel has also been proposed.

Description

Curved display panel and manufacturing method thereof

The present invention relates to a display panel and a method of fabricating the same, and more particularly to a curved display panel and a method of fabricating the same.

With the advancement of technology, curved display panels are becoming more and more widely used. For example, curved display panels have been widely used in wearable devices, mobile phones, and televisions. The devices that are often used in life can be equipped with curved display panels, which also represents the 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 away from the user.

In the process of the conventional curved display panel, the substrate of the ultra-thin glass (having a thickness of about 0.1 to 0.05 mm) is biased, and the panel has a predetermined curvature due to the flexibility of the ultra-thin glass substrate. However, during the above-mentioned force application, the bending stress generated by the curved display panel may cause the liquid crystal to be pushed to both sides or the periphery of the curved display panel, for example, the left and right sides or the four corners of the curved display panel. The distribution of the liquid crystal amount is uneven, and abnormal liquid crystal layer gaps and mura phenomena are generated, resulting in poor display quality of the curved display panel.

A method for fabricating a curved display panel according to an embodiment of the present invention includes the steps of: 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 second flat layer is disposed on the second substrate; the first substrate and the second substrate are combined to form a plurality of pre-spaces between the auxiliary spacers and the planar layer; and a plurality of liquid crystal molecules are formed between the first substrate and the second substrate Forming a base panel; and performing a deformation process on the base panel, so that the front space is respectively converted into a plurality of accommodation spaces. The opening width of each of the accommodating spaces is larger than the opening width of each of the front spaces. One of the liquid crystal molecules is located in at least one of the accommodation spaces.

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 misalignment amount M is defined by relation 1: [Relationship 1] . L is the length of the curved display panel. T is the thickness of either of the first substrate or the second substrate, and the thickness of the first substrate and the second substrate are the same. 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 between the first substrate and the second substrate. The first substrate includes a first substrate and a plurality of auxiliary spacers on the first substrate. The second substrate includes a second substrate, the planar layer is on the second substrate, and the plurality of pixel units are located between the second substrate and the planar layer and are located in the display region. 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 of the auxiliary spacers 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 the 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 movement can be accommodated from the display area to the deformation area. Liquid crystal molecules in the peripheral region. In this way, the problem of uneven distribution of liquid crystal molecules in the curved display panel can be mediated through the accommodating space, and the local 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 objects of the present invention is to mediate the problem of uneven distribution of liquid crystal in a curved display panel.

One of the objects of the present invention is to avoid a local abnormal liquid crystal layer gap in a curved display panel.

One of the objects of the present invention is to reduce the streaking phenomenon of a curved display panel.

One of the objects of the present invention is to maintain the support requirements of a curved display panel.

One of the objects of the present invention is to improve the display quality of a curved display panel.

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

One of the objects of the present invention is to apply to a curved display panel having a narrow bezel.

The above described features and advantages of the invention will be apparent from the following description.

1A is a top plan view of a base panel according to an embodiment of the present invention. For convenience of description and observation, FIG. 1A omits drawing of a part of the components. Figure 1B is a cross-sectional view of the base panel of Figure 1A taken along section line A-A'. 2A is a top plan view of a curved display panel according to an embodiment of the present invention. For convenience of description and observation, FIG. 2A omits drawing of some components. Figure 2B is a cross-sectional view of the curved display panel of Figure 2A taken along section line B-B'. Referring to FIG. 1A and FIG. 1B , in the embodiment, the method for manufacturing the curved display panel 20 (shown in FIGS. 2A and 2B ) includes: providing the first substrate 100 . The first substrate 100 includes a first substrate 110 and a plurality of auxiliary spacers 120 on the first substrate 110. In the present embodiment, the auxiliary spacer 120 is located in the peripheral region 14 , and the first substrate 100 further includes a plurality of supporting spacers 160 located in the display region 12 . In the present embodiment, the peripheral zone 14 surrounds the display zone 12. In the present 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 the embodiment, the first substrate 100 is exemplified by a transparent substrate or a color filter substrate. For example, the color filter substrate may be provided with a light shielding layer and/or a color filter layer 130 and a protective layer 140 between the first substrate 110 and the auxiliary spacer 120, but the invention is not limited thereto.

Next, a second substrate 200 is provided. The second substrate 200 includes a second substrate 210 and a flat layer 240 on the second substrate 210. In the present 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 the embodiment, the second substrate 200 is exemplified as an array substrate, and the insulating layers 220 and 230 may be interposed between the second substrate 210 and the flat layer 240. The material of the insulating layers 220, 230 comprises yttrium oxide, tantalum nitride, ytterbium oxynitride or a stacked layer of at least two of the above materials, but the invention is not limited thereto. The material of the flat layer 240 comprises an organic material such as a photosensitive polyimide resin, a phenolic epoxy acrylic resin or other suitable materials, but the invention is not limited thereto.

In the embodiment, the second substrate 200 further includes a plurality of pixel units PX between the second substrate 210 and the flat layer 240. For example, the pixel unit PX is disposed on the second substrate 210 and covered by one of the insulating layers 220, 230 and located in the display area 12. In this embodiment, the pixel unit PX includes a thin film transistor TFT and the pixel electrode PE is electrically connected to the thin film transistor TFT. The thin film transistor TFT is exemplified by a bottom gate type TFT transistor, a top gate type TFT, or other suitable type of film transistor, 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 bonded to constitute the base panel 10. The plurality of liquid crystal molecules LC constitute a liquid crystal layer. In this embodiment, before the step of forming the liquid crystal molecules LC, the formation of the sealant 180 between the first substrate 100 and the second substrate 200 is further included. For example, the sealant 180 is located within the peripheral zone 14 and each of the auxiliary spacers 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 the liquid crystal molecules LC as the display medium, but the invention is not limited thereto. In other embodiments, the electrophoretic display medium or other applicable display medium may also be selectively used, and the invention is not limited thereto.

It should be noted that in the embodiment, when the steps of the first substrate 100 and the second substrate 200 are combined, a plurality of pre-spaces 310 may be formed between the auxiliary spacers 120 and the flat layer 240. Specifically, in the peripheral region 14, each of the auxiliary spacers 120 has a recess 122, and the flat layer 240 has a plurality of recesses 242 corresponding to the recesses 122, that is, the recesses 122 and the recesses 242 are opposite to each other and communicate with each other. These pre-spaces 310 are formed separately. In the present embodiment, these front spaces 310 may be selectively located on the left or right side, the upper side or the lower side, and/or all sides of the base panel 10. In other embodiments, the front space 310 may be located at at least one corner of the base panel 10, for example, four corners, and the invention is not limited thereto. Since the recess 122 of the auxiliary spacer 120 is located in the recess 242 of the flat layer 240, and the auxiliary spacer 120 abuts against the second substrate 200, the opening width of the front space 310 is 0 micrometers. 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 of the front spaces 310 is a closed space. However, the invention is not limited thereto, and in other embodiments, the front space has a very small opening. Under the above design, the auxiliary spacers 120 in the formed base panel 10 can provide the support requirements of the base panel 10, maintaining the liquid crystal layer gap of the substrate.

Then, referring to FIGS. 1A, 1B, 2A, and 2B, the deformation process is performed on the base panel 10. For example, the deformation program applies a force to the base panel 10 to bend the base panel 10 and form the curved display panel 20. The curved display panel 20 of the present embodiment is exemplified by a curved display panel 20 that is curved in the z-axis direction. For example, as shown in FIG. 2A, the curved display panel 20 is a concave display panel whose 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 the present embodiment, the rectangular curved display panel 20 has a long side 22 extending along the x-axis direction and curved, and a short side (not shown) extending along the y-axis direction, and the x-axis is perpendicular to the y-axis. In other words, the long side 22 series curved display panel 20 has sides of curvature and/or curvature. In the present embodiment, the long side 22 has a length L. In other words, the length L is the length of the curved display panel 20 being curved. However, the present invention is not limited thereto. In other embodiments, the curved display panel has a short side extending along the x-axis direction and curved, and a long side extending along the y-axis direction.

Referring to FIG. 2A and FIG. 2B , in the embodiment, the curved curved display panel 20 has a misalignment amount M formed between the first substrate 100 ′ and the second substrate 200 ′. The misalignment amount M is defined by relation 1: [Relationship 1] Where L is the 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' is the same thickness as the second substrate 210', R is The curved surface displays the curvature of the panel 20.

It is to be noted that since the misalignment occurs between the first substrate 100' and the second substrate 200', the groove 122' of the auxiliary spacer 120 may be misaligned in the recess 242' of the flat layer 240. As such, the front spaces 310 are converted into a plurality of accommodating spaces 320, respectively. In detail, as shown in FIG. 1B and FIG. 2B, in the process of bending the base panel 10 to form the curved display panel 20, the recessed portion formed in the peripheral region 14 and the recessed portion 242 form a sealed front space 310, The opening accommodating space 320 formed by the recess 122 ′ and the recess 242 ′ is formed by the misalignment. The recess 122 ′ and the recess 242 ′ are opposite to each other and communicate with each other, and a recess 122 ′ and the recess 242 ′ are 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 of the front spaces 310. The opening size of the accommodating space 320 is exemplified by the opening size of each of the front spaces 310, but the invention is not limited thereto. Under the above design, one of the liquid crystal molecules LC can enter the open accommodating spaces 320 through the openings 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 region 12 toward 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 mediate 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 streaking phenomenon of the curved display panel 20 can be further reduced to improve the display quality of the curved display panel 20.

Hereinafter, the configuration of the curved display panel 20 according to an embodiment of the present invention will be briefly described by taking the above-described embodiment as an example.

Referring to FIG. 2A and FIG. 2B, the curved display panel 20 of the present embodiment includes a first substrate 100', a second substrate 200', and a plurality of liquid crystal molecules LC between the first substrate 100' and the second substrate 200'. The first substrate 100' includes a first substrate 110' and a plurality of auxiliary spacers 120 are disposed on the first substrate 110'. The second substrate 200' includes a second substrate 210', the flat layer 240 is located on the second substrate 210', and the plurality of pixel units PX are located between the second substrate 210' and the flat layer 240 and are located within the display region 12. In the embodiment, the auxiliary spacers 120 correspond 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 of the auxiliary spacers 120 is located in the peripheral region 14 and does not overlap with each of the pixel units PX. Referring to FIG. 1B and FIG. 2B , in the 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.

3A is a top and side elevational view of a front panel formed before a deformation process according to an embodiment of the present invention. FIG. 3B is a top and side elevational view of the accommodating space formed by the curved display panel after the deformation process according to an embodiment of the present invention. FIG. Referring first to FIG. 1B and FIG. 3A , in the present 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 recess 122 . For example, each auxiliary spacer 120 has a width W1 of 10 micrometers to 50 micrometers, a groove 122 having a width W3 of 2 micrometers to 42 micrometers, and a recess 242 having a width W2 of 6 micrometers to 46 micrometers, but the present invention does not Limited. Further, the height H1 of each auxiliary spacer 120 is 2 micrometers to 4 micrometers, the depth H2 of the recess 122 is 0.5 micrometers to 4 micrometers, the depth H3 of the concave portion 242 is 0.25 micrometers to 3 micrometers, and the height H4 of the flat layer 240 is 1 micron to 3 micron, but the invention is not limited thereto. In the present embodiment, the design of each of the auxiliary spacers 120, the grooves 122, and the recesses 242 can be adjusted according to the requirements of the curved display panel 20 of different curvatures for the liquid crystal. For example, the depth H2 of the groove 122 is equal to or greater than the height H1 of the auxiliary spacer 120. The depth H2 is equal to or smaller than the height H1 of the auxiliary spacer 120. The depth H3 of the recess 242 is equal to or greater than the height H4 of the flat layer 340 And the depth H3 is equal to or smaller than the height H4 of the flat layer 240, but the invention is not limited thereto.

It should be noted that, referring to FIG. 3A and FIG. 3B, in the present embodiment, the groove 122 and the recess 242 on the base panel 10 constitute a sealed front space 310. After the groove 122' and the recess 242' on the curved display panel 20 are deformed, the opening 322 is formed and constitutes an open accommodating space 320. In the present embodiment, the auxiliary spacers 120 may abut against the second substrate 200, 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 a pitch K1 as the width of the sidewall, and the width of the sidewall of each auxiliary spacer 120 overlapping with the flat layer 240 may be defined. The width K2 is overlapped to serve as the width of the side wall abutting the flat layer 240. The length d1 of the pitch K1 is about 4 micrometers to 20 micrometers, and the width d2 of the overlapping width K2 is about 2 micrometers to 10 micrometers, but the invention is not limited thereto. The overlap width K2 is at least half of the pitch K1. For example, d2= D1. In 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 misalignment abuts the flat layer 240 is D1. That is, when viewed in a side view, the sum of the width d2 of the overlapping width K2 of the flat layer 240 overlapping the left side wall and the right side wall is d1. Taking the curved display panel 20 in this embodiment as an example, if viewed in a side view, the left side wall of the misaligned auxiliary spacer 120 completely abuts the flat layer 240, and 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 side wall of the object 120 overlapping the flat layer 240 is equal to the length d1 of the pitch K1, that is, d2' = d1. Therefore, 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 before the misalignment and the flat layer 240 may be the same as the width d2' of the overlapping width K2' after the displacement. It is equal to the length d1 of the pitch K1. As such, the auxiliary spacers 120 can provide the same support requirements of the base panel 10 and the curved display panel 20, that is, the auxiliary spacers 120 can provide substantially the same support requirements before and after bending, maintaining the first substrates 100, 100' and the second A liquid crystal layer gap between the substrates 200, 200'.

In other embodiments, the auxiliary spacers 120 and the liquid crystal layer may have other film layers. The flat layer 240 and the liquid crystal layer may have other film layers, but substantially do not affect the front space 310 and the receiving space. The formation of 320.

4A is a top plan view of an auxiliary spacer according to an embodiment of the present invention. In this embodiment, as shown in FIG. 3A and FIG. 4A , the plurality of auxiliary spacers 120 are arranged in a plurality of rows and columns, and the auxiliary spacers 120 have a circular cross section, but the invention is not limited thereto. . In the present embodiment, these auxiliary spacers 120 are not connected to each other. For example, the grooves 122 of the auxiliary spacers 120 align the recesses 242 prior to performing the deformation process. Two adjacent auxiliary spacers 120 are separated by a distance D. In the present 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). With the above design, referring to FIG. 3A and FIG. 3B, the groove 122' of the misaligned auxiliary spacer 120 will not be aligned to the adjacent recess 242', and the sealed front space 310 can be ensured to be opened. The accommodating space 320 is for accommodating 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 a local abnormal liquid crystal layer gap in the curved display panel 20 can be avoided. In addition, the streaking phenomenon of the curved display panel 20 can be further reduced to improve the display quality of the curved display panel 20.

In a curved surface 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 region 14, the accommodating region 12 can be accommodated. The liquid crystal molecules LC of the peripheral region 14. In addition, the adjacent auxiliary spacers 120 also have a distance D between them, and the distance D is greater than the displacement amount M. Thereby, the groove 122 is not aligned to the adjacent recess 242, and the sealed front space 310 can be ensured to be converted into the open accommodating space 320. In this way, the problem of uneven distribution of liquid crystal molecules LC in the curved display panel 20 can be adjusted through the accommodating space 320, and a local abnormal liquid crystal layer gap in the curved display panel 20 can be avoided. In addition, the streaking phenomenon of the curved display panel 20 can be further reduced to improve the display quality of the curved display panel 20. In addition, since the sum of the width d2' of the overlap width K2' of the auxiliary spacer 120 of the curved display panel 20 and the flat layer 240 after the misalignment and the width d2 of the overlap width K2 before the misalignment may be the same, both are equal to the pitch K1. The length d1 can provide the same support requirement of 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 use the same reference numerals and parts in the foregoing embodiments, wherein the same reference numerals are used to refer to the same or similar elements, and the description of the parts in which the same technical content is omitted may refer to the foregoing embodiments, and the following embodiments are no longer used. Repeat the details.

4B is a top plan view of an auxiliary spacer according to another embodiment of the present invention. Referring to FIG. 4A and FIG. 4B, the auxiliary spacer 120A of the present embodiment is similar to the auxiliary spacer 120 of FIG. 4A. The main difference is that the auxiliary spacer 120A has a square cross section. Further, the cross section of the recess 122A and the recess 242A is also square. As such, the auxiliary spacer 120A can achieve the same technical effects as the above embodiments.

4C is a top plan view of an auxiliary spacer according to another embodiment of the present invention. Referring to FIG. 4A and FIG. 4C, the auxiliary spacer 120B of the present embodiment is similar to the auxiliary spacer 120 of FIG. 4A. The main difference is that the auxiliary spacer 120B has a rectangular cross section. Further, the cross section of the recess 122B and the recess 242B is also rectangular. As such, the auxiliary spacer 120B can achieve the same technical effects as the above embodiments.

FIG. 5A is a top view of an auxiliary spacer according to another embodiment of the present invention. FIG. Referring to FIG. 4A and FIG. 5A, the auxiliary spacer 120C of the present embodiment is similar to the auxiliary spacer 120 of FIG. 4A. The main difference is that the plurality of auxiliary spacers 120C are arranged in a plurality of rows and columns, and adjacent to each other. The two rows of auxiliary spacers 120C are arranged offset from each other. In detail, in the present embodiment, the two adjacent auxiliary spacers 120C are apart from the distance D', and the distance D' is a horizontal distance. In the present 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). In the above design, referring to FIG. 3A, FIG. 3B and FIG. 5A, since the auxiliary spacers 120C of the adjacent two rows are misaligned and are not aligned, the groove 122C of the auxiliary spacer 120C after the misalignment is not correct. The adjacent pre-pits 242C are positioned to ensure that the sealed pre-space 310 is transformed into an open accommodating space 320 for accommodating the liquid crystal molecules LC. In this manner, more of the accommodation space 320 may be formed in the peripheral area 14 and/or applied to the curved display panel 20 of the narrow frame to mediate the problem of uneven distribution of liquid crystal molecules LC in the curved display panel 20, and avoid the curved display panel. A partial abnormal liquid crystal layer gap in 20. In addition, the streaking phenomenon of the curved display panel 20 can be further 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, and the invention is not limited thereto.

FIG. 5B is a top view of an auxiliary spacer according to another embodiment of the present invention. Referring to FIG. 5A and FIG. 5B, the auxiliary spacer 120D of the present embodiment is similar to the auxiliary spacer 120C of FIG. 5A. The main difference is that the auxiliary spacer 120D has a square cross section. In addition, the cross section of the groove 122D and the recess 242D is also square. As such, the auxiliary spacer 120D can achieve the same technical effects as the above embodiment.

FIG. 5C is a top view of an auxiliary spacer according to another embodiment of the present invention. Referring to FIG. 5A and FIG. 5C, the auxiliary spacer 120E of the present embodiment is similar to the auxiliary spacer 120C of FIG. 5A. The main difference is that the auxiliary spacer 120E has a rectangular cross section. Further, the cross section of the groove 122E and the recess 242E is also rectangular. As such, the auxiliary spacer 120E can achieve the same technical effects as the above embodiments.

6A is a top and side elevational view of a front panel formed before a deformation process according to another embodiment of the present invention. 6B is a cross-sectional view of a curved display panel according to another embodiment of the present invention. Referring to FIG. 3A and FIG. 6A simultaneously and FIG. 2B and FIG. 6B simultaneously, the curved display panel 20A of the present 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 front spaces 310A. It should be noted that FIG. 6A only schematically illustrates a front space 310A, but it should be understood by those skilled in the art that each auxiliary spacer 120F corresponds to the flat layer 240 to form a plurality of fronts. Space 310A is placed.

In the present embodiment, the width W1A of each of the auxiliary spacers 120F is larger than the width W2 of the recesses. For example, the width W1A of each auxiliary spacer 120F is 10 micrometers to 50 micrometers, and the width W2 of the concave portion 242 is 6 micrometers to 46 micrometers, but the invention is not limited thereto. In addition, the height H1A of each auxiliary spacer 120F is 2 micrometers to 4 micrometers, the depth H3 of the concave portion 242 is 0.25 micrometers to 3 micrometers, and the height H4 of the planarization layer 240 is 1 micrometer to 3 micrometers, but the present invention does not limit. In the present embodiment, the design of each of the auxiliary spacers 120F and the recesses 242 can be adjusted by the requirements of the curved display panel 20A of different curvatures for the liquid crystal. For example, the depth H3 of the recess 242 is equal to or greater than the height H4 of the flat layer 240. And the depth H3 is equal to or smaller than the height H4 of the flat layer 240.

In the present embodiment, the auxiliary spacers 120F can abut against the second substrate 200' and provide support for the curved display panel 20A to maintain 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 a pitch K1A, and the width of each auxiliary spacer 120F abutting the flat layer 240 may define an overlapping width K2A. In the present embodiment, the length d1A of the pitch K1A is about 2 micrometers to 20 micrometers, and the width d2A of the overlapping width K2A is about 2 micrometers to 20 micrometers, but the invention is not limited thereto. The overlap width K2A is equal to or larger than the pitch K1A, for example, d2A = d1A. Under the above design, the width d2A of the overlapping width K2A of the auxiliary spacer 120F before the misalignment abutting 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 process 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 between the second substrate 200' and the second substrate 200'. Thereby, the width d2A' of the overlapping width K2A' of the offset auxiliary layer 120F against the flat layer 240 can be increased to be larger than the length d1A of the pitch K1A. In this way, the overlapping width K2A′ of the offset auxiliary layer 120F against the flat layer 240 may be greater than the overlapping width K2A before the displacement, so that the support requirement of the curved display panel 20A may be further provided to maintain the first substrate 100A′ and the second substrate. Liquid crystal layer gap between 200'

In addition, after the deformation process is performed, the pre-space 310A can be converted into the accommodating space 320A. As shown in Fig. 6B, an accommodating space 320A having an opening 322A is formed between the auxiliary spacer 120F and the recess 242'. Under the above design, one of the liquid crystal molecules LC can enter the open accommodating spaces 320A through the openings 322A and be located in at least one of the accommodating spaces 320A. As such, the curved display panel 20A can achieve the same technical effects as the above embodiment.

FIG. 7A is a top and side elevational view of a front panel formed before a deformation process according to still another embodiment of the present invention. FIG. 7B is a cross-sectional view of a curved display panel according to still another embodiment of the present invention. Referring to FIG. 3A and FIG. 7A simultaneously and FIG. 2B and FIG. 7B simultaneously, the curved display panel 20B of the present 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 front spaces 310B. It should be noted that FIG. 7A only schematically illustrates a front space 310B, but it should be understood by those skilled in the art that each auxiliary spacer 120G corresponds to the convex portion 242G to form a plurality of front portions. Space 310B is placed.

In the present embodiment, the width W1B of each auxiliary spacer 120G is larger than the width W2B of the convex portion 242G, and the width W2B of the convex portion 242G is larger than the width W3B of the groove 122G. For example, the width W1B of each auxiliary spacer 120G is 10 micrometers to 50 micrometers, the width W3B of the recess 122G is 2 micrometers to 42 micrometers, and the width W2B of the convex portion 242G is 6 micrometers to 46 micrometers, but the present invention does not This is limited. Further, the height H1B of each of the auxiliary spacers 120G is 1 micrometer to 3 micrometers, the depth H2B of the groove 122G is 0.25 micrometers to 3 micrometers, the height H3B of the convex portion 242G is 0.2 micrometers to 1 micrometer, and the height H4 of the flat layer 240G It is from 1 micrometer to 3 micrometers, but the invention is not limited thereto. In the present embodiment, the design of each of the auxiliary spacers 120G, the grooves 122G, and the convex portions 242G can be adjusted according to the requirements of the curved display panel 20B of different curvatures for the liquid crystal. For example, the depth H2B of the groove 122G is equal to or greater than the height H1B of the auxiliary spacer 120G. The depth H2B is equal to or smaller than the height H1B of the auxiliary spacer 120G, but the invention is not limited thereto. In the present 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 limit.

In the present embodiment, the auxiliary spacers 120G can abut the convex portions 242G of the flat layer 24G0 and provide support requirements for the curved display panel 20B to maintain 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 a pitch K1B, and the width of the abutment of each auxiliary spacer 120G and the convex portion 242G may define an overlapping width K2B. In the present embodiment, the length d1B of the pitch K1B is about 4 micrometers to 20 micrometers, and the width d2B of the overlapping width K2B is about 2 micrometers to 10 micrometers, but the invention is not limited thereto. The overlap width K2B is at least half of the pitch K1B, for example, d2B= d1B. In the above design, the width d2B of the overlapping width K2B of the side wall abutting convex portion 242G of the auxiliary spacer 120G before the misalignment is d1B. That is, when viewed in a side view, the sum of the widths d2B of the overlapping width K2B of the left side wall and the right side wall abutting convex portion 242G is d1B. In this embodiment, as shown in FIG. 6B, after the deformation process is performed, since the misalignment amount M between the first substrate 100B' and the second substrate 200B' may be greater than the length d1B of the pitch K1B, thereby, after the misalignment The right side wall of the auxiliary spacer 120G completely abuts the convex portion 242G, and the left side wall does not abut the convex portion 242G at all, so the width d2B' of the overlapping width K2B' defined by the width of the auxiliary spacer 120G abutting the convex portion 242G is equal to The length of the spacing K1B is d1B, that is, d2B'=d1B. Thus, the sum of the width d2B of the overlap width K2B before the misalignment and the width d2B of the overlap width K2B of the convex portion 242G may be the same as the sum of the width d2B' of the overlap width K2B' after the misalignment, and is equal to the length d1B of the pitch K1B. In this way, the auxiliary spacer 120G can provide the same support requirement of 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 deformation process is performed, the pre-space 310B can be converted into the accommodating space 320B. As shown in FIG. 7B, an accommodating space 320B having an opening 322B is formed between the auxiliary spacer 120G and the convex portion 242G. Under the above design, one of the liquid crystal molecules LC can enter the open accommodating space 320B through the opening 322B and be located in at least one of the accommodating spaces 320B. As such, the curved display panel 20B can achieve the same technical effects as the above embodiment.

In summary, the curved display panel and the manufacturing method thereof according to an embodiment of the present invention, because a plurality of auxiliary spacers correspond to the flat layer to form a plurality of accommodating spaces in the peripheral region, can be accommodated from the display region to the periphery The liquid crystal molecules in the area. In addition, there is a distance between adjacent auxiliary spacers, and the distance is greater than the amount of misalignment. Thereby, the groove does not align to the adjacent recess, and the sealed front space can be ensured to be converted into an open accommodating space. In this way, the problem of uneven distribution of liquid crystal molecules in the curved display panel can be mediated through the accommodating space, and the local 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 overlapping width of the auxiliary spacer and the flat layer of the curved display panel after the misalignment may be the same as or larger than the overlapping width before the misalignment, the same or better support requirement of the panel may be provided to maintain the liquid crystal layer between the substrates. gap. In addition, the adjacent two rows of auxiliary spacers can also be arranged in a staggered manner without alignment, so that the misaligned auxiliary spacers do not align to the adjacent recesses, and can ensure that the sealed front space is transformed into an open accommodating space. . As such, the distance between adjacent auxiliary spacers can be less than the amount of misalignment to form more housing space in the peripheral region and/or a curved display panel applied to the narrow bezel.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

10‧‧‧Basic panel

12‧‧‧ display area

14‧‧‧The surrounding area

20, 20A, 20B‧‧‧ curved display panel

22‧‧‧Longside

100, 100', 100A', 100B'‧‧‧ first substrate

110, 110’‧‧‧ first base

120, 120A, 120B, 120C, 120D, 120E, 120F, 120G‧‧‧ auxiliary spacers

122, 122', 122A, 122B, 122C, 122D, 122E, 122G‧‧‧ grooves

130‧‧‧Lighting layer and / or color filter

140‧‧‧Protective layer

160‧‧‧Support spacers

180‧‧‧Box glue

200, 200', 200B'‧‧‧ second substrate

210, 210'‧‧‧ second substrate

220, 230‧‧‧ insulation

240, 240G‧‧‧ flat layer

242, 242', 242A, 242B, 242C, 242D, 242E‧‧‧ recess

242G‧‧‧ convex

310, 310A, 310B‧‧‧ front space

320, 320A, 320B‧‧‧ accommodating space

322, 322A, 322B‧‧‧ openings

D, D’‧‧‧ distance

D1, d2, d2', d1A, d2A, d2A', d1B, d2B, d2B'‧‧‧ wide length

D2, d2', d2A, d2A', d2B, d2B'‧‧ wide

H1, H1A, H1B, H3B, H4‧‧‧ height

H2, H2B, H3‧‧‧ Depth

K1, K1A, K1B‧‧‧ spacing

K2, K2', K2A, K2A', K2B, K2B'‧‧‧ overlap width

L‧‧‧ length

LC‧‧‧liquid crystal molecules

PE‧‧‧ pixel electrode

PX‧‧‧ pixel unit

R‧‧‧ curvature

T‧‧‧ thickness

TFT‧‧‧thin film transistor

W1, W1A, W1B, W2, W2B, W3, W3B‧‧‧ width

X, Y, Z‧‧‧ axes

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

Claims (10)

A method of manufacturing a curved display panel, comprising: providing a first substrate, comprising: a first substrate; and a plurality of auxiliary spacers on the first substrate; and providing a second substrate, comprising: a second substrate; a flat layer is disposed on the second substrate; the first substrate and the second substrate are combined to form a plurality of pre-spaces between the auxiliary spacers and the planar layer; forming a plurality of liquid crystal molecules on the first substrate and Forming a base panel between the second substrates; and performing a deformation process on the base panel, so that the pre-spaces are respectively converted into a plurality of accommodating spaces, wherein an opening width of each of the accommodating spaces is greater than each of the front The width of the opening of the space, one of the liquid crystal molecules is located in at least one of the accommodating spaces. The method for manufacturing a curved display panel according to claim 1, wherein each of the front spaces has an opening width of 0 μm, and each of the front spaces is a closed space, wherein the deformation program bends the basic panel. . The method of manufacturing the curved display panel of claim 1, wherein the second substrate further comprises a plurality of pixel units located between the second substrate and the flat layer and located in a display area, wherein each of the pixels The auxiliary spacer is located in a peripheral region and does not overlap with each of the pixel units; wherein the first substrate further comprises a plurality of supporting spacers located in the display region. The method of manufacturing the curved display panel of claim 1, 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, wherein each The auxiliary spacer does not overlap the sealant. The method for manufacturing a curved display panel according to claim 1, wherein each of the auxiliary spacers has a recess, and the flat layer has a plurality of recesses respectively corresponding to the recesses to respectively form the pre-spaces. The width of each of the auxiliary spacers is greater than the width of the recesses is greater than the width of the recesses, wherein a difference between a width of each of the auxiliary spacers and a width of the recess defines a distance, and one side wall of each of the auxiliary spacers The overlap width with the flat layer is at least half of the pitch; wherein each of the auxiliary spacers has a width of 10 micrometers to 50 micrometers, the recess has a width of 2 micrometers to 42 micrometers, and the recess has a width of 6 micrometers to 46 micrometers. The micron, wherein each of the auxiliary spacers has a height of 2 micrometers to 4 micrometers, the recess has a depth of 0.5 micrometers to 4 micrometers, and the recess has a depth of 0.25 micrometers to 3 micrometers. The method for fabricating a curved display panel according to claim 1, wherein the flat layer has a plurality of recesses respectively corresponding to the auxiliary spacers to respectively form the pre-spaces, wherein the width of each of the auxiliary spacers is greater than a width of the recess, wherein a difference between a width of each of the auxiliary spacers and a width of the recess defines a pitch, and an overlap width of each of the auxiliary spacers abutting the flat layer is equal to or larger than the pitch; wherein each of the auxiliary gaps The width of the object is from 10 micrometers to 50 micrometers, and the width of the recess is from 6 micrometers to 46 micrometers, wherein each of the auxiliary spacers has a height of from 2 micrometers to 4 micrometers, and the recess has a depth of from 0.25 micrometers to 3 micrometers. The method for manufacturing a curved display panel according to claim 1, wherein each of the auxiliary spacers has a groove, and the flat layer has a plurality of convex portions respectively corresponding to the grooves to respectively form the front spaces. The width of each of the auxiliary spacers is greater than the width of the protrusions is greater than the width of the recesses, wherein a difference between a width of each of the auxiliary spacers and a width of the recess defines a spacing, and each of the auxiliary spacers The width of overlap of a sidewall and each of the protrusions is at least half of the pitch; wherein each of the auxiliary spacers has a width of 10 micrometers to 50 micrometers, and the width of the recesses is 2 micrometers to 42 micrometers, and the width of the convex portion is 6 μm to 46 μm, wherein each of the auxiliary spacers has a height of 2 μm to 4 μm, and each of the grooves has a depth of 0.5 μm to 4 μm, and each of the protrusions has a height of 0.2 μm to 1 μm. The method of fabricating a curved display panel according to claim 1, wherein the auxiliary spacers are not connected to each other. The method for fabricating a curved display panel according to claim 8, wherein two adjacent auxiliary spacers are separated by a distance D, and the distance D is greater than a displacement amount M between the first substrate and the second substrate. , where the misalignment amount M is defined by relation 1: [Relationship 1] Where L is the length of the curved display panel, T is the thickness of any of the first substrate or the second substrate, and the first substrate is the same thickness as the second substrate, and R is the curved display panel The curvature of the bend, wherein each of the auxiliary spacers has a circular, square or rectangular cross section. A curved display panel comprising: a first substrate comprising: a first substrate; and a plurality of auxiliary spacers on the first substrate; a second substrate comprising: a second substrate; a flat layer located at the first On the two substrates, wherein the auxiliary spacers correspond to the flat layer to form a plurality of accommodating spaces; and the plurality of pixel units are located between the second substrate and the flat layer and are located in a display area, each of the pixels The unit 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 region and does not overlap with each of the pixel units; and a plurality of liquid crystal molecules are located at the first Between the substrate and the second substrate, wherein the first substrate and the second substrate are curved.