KR101577237B1 - Multi view display device - Google Patents

Abstract

According to an embodiment of the present invention, a multi-view display device comprises a display panel and an optical path conversion panel. The display panel includes first and second substrates which face each other, and a plurality of pixels which are formed between the first and second substrates, wherein each of the pixels corresponds to one from at least two viewing directions. The optical path conversion panel includes a support film, a lenticular array formed of a resin material having scattering particles on one surface of the support film, and an adhesive film which bonds the lenticular array to the display panel. The lenticular array has a cross section in a convex lens shape protruding toward the display panel, and is made of a plurality of lenticular patterns arranged in one direction.

Description

[0001] MULTI VIEW DISPLAY DEVICE [0002]

The present invention relates to a multi-view display device for simultaneously displaying two or more different images in two or more different viewing directions.

As the era of informationization becomes full-scale, the display field for visually displaying electrical information signals is rapidly developing. Accordingly, studies are being continued to develop performance such as thinning, lightening, and low power consumption for various various flat display devices.

Typical examples of such flat panel display devices include a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display (FED) An electroluminescence display device (ELD), an electro-wetting display device (EWD), and an organic light emitting display device (OLED).

Such flat panel display devices commonly include flat panel display panels for realizing images. A flat panel display panel is a structure in which a pair of substrates sandwiching a unique light emitting material or a polarizing material are face-to-face bonded.

2. Description of the Related Art In recent years, a flat panel display device has selectively provided not only a general function of displaying one two-dimensional image corresponding to a single viewing direction but also a multi-viewing function of simultaneously displaying two or more different images corresponding to two or more viewing directions To be developed and commercialized. A flat panel display device capable of selectively providing a multi-view display function is referred to as a " multi-view display device ".

The multi-view display device includes a display panel that emits display light corresponding to two or more different images according to the multi-view display function, and a light path conversion panel that separates two or more images corresponding to two or more different viewing directions . Here, the optical path changing panel includes a structure including a parallax barrier (hereinafter referred to as a " parallax barrier system "), and a structure including a lenticular pattern (hereinafter referred to as a" lenticular system " . ≪ / RTI >

1A, a display panel 10a includes a plurality of pixels 13 (C, L, R) defined between first and second substrates 11 and 12, and a plurality of pixels C , L, R correspond to any one of two or more visual directions (VC, VL, VR).

Illustratively, the two or more viewing directions VC, VL and VR correspond to a first viewing direction VC corresponding to the center of the front of the multiple viewing device 10, The second viewing direction VL and the third viewing direction VR corresponding to the right side of the front of the multi-view display device 10 may be included. In this case, the first pixel C corresponding to the first visual direction VC, the second pixel L corresponding to the second visual direction VL, and the third pixel L corresponding to the second visual direction VL, And a third pixel R corresponding to the direction VR.

When the optical path changing panel 10b is of the parallax barrier type, the parallax barrier 15 and the parallax barrier 15 formed on one side of the supporting film 14, the supporting film 14, and the parallax barrier 15 are placed on the display panel 10a And an adhesive film 16 for attaching the adhesive film 16.

The parallax barrier 15 has a barrier 15a corresponding to neighboring first, second and third pixels C, L and R and shielding light, and a slit 15b serving as a spacing region between the barriers 15a 15b.

The multi-view display apparatus of the parallax barrier type can easily increase the viewing angle and the viewing area by adjusting the spacing D_P between the parallax barrier 15 and the plurality of pixels 13 and the spacing of the barrier 15a There are advantages to be able to. Here, the viewing angle corresponds to the width of each of the viewing directions (VC, VR, VL), and the viewing area corresponds to the appropriate distance between the display device 10 and the region where the image in each viewing direction is observed.

However, in the multi-view display device of the parallax barrier type, since the aperture ratio is reduced by the barrier 15a of the parallax barrier 15, the brightness is lowered and the power consumption is disadvantageously deteriorated.

1B, when the optical path changing panel 10b 'is of the lenticular type, the lenticular array 17 formed on one side of the supporting film 14, the lenticular array 17 formed on one side of the supporting film 14, And an adhesive film 16 for adhering between the other surface and the display panel 10a.

The lenticular array 17 includes a plurality of lenticular patterns 17a arranged in parallel in one direction.

The cross section of each lenticular pattern 17a is in the form of a convex lens having a width corresponding to the neighboring first, second and third pixels C, L and R, Is projected in a direction toward the display surface of the device 10 '.

Since the lenticular optical path changing unit 10b 'does not include the barrier (15a in Fig. 1A) which is a factor for decreasing the aperture ratio of the display apparatus, the luminance of the multi-time display apparatus 10' Can be improved and advantageous in reducing power consumption.

On the other hand, the lenticular-type optical path changing unit 10b 'is disadvantageous in that the viewing angle and the viewing area are smaller than the parallax barrier mode due to the condensation of each lenticular pattern 17a.

Since the width and thickness of the lenticular pattern 17a are limited, a method for increasing the viewing angle and the viewing area of the multi-view display device 10 'is performed by the lenticular array 17 and the plurality of pixels 13, Only the distance D_L between them is adjusted. However, in order to adjust the separation distance D_L between the lenticular array 17 and the plurality of pixels 13, the substrate disposed between the lenticular array 17 and the plurality of pixels 13 is deleted or the thickness of the substrate is set to There is a limitation in reducing the thickness of the second substrate 12. Particularly, a process for reducing the thickness of the second substrate 12 or the like is added, which raises manufacturing costs and manufacturing time and complicates the process.

The present invention is intended to provide a multi-view display device which can easily increase the viewing angle and viewing area while being a lenticular system.

According to an aspect of the present invention, there is provided a liquid crystal display device including first and second substrates facing each other, and a plurality of pixels formed between the first and second substrates, A display panel corresponding to either one; And a lenticular array formed of a resin material including scattering particles on one surface of the support film and an adhesive film for attaching the lenticular array to the display panel, wherein the lenticular array is protruded toward the display panel And a light path changing panel including a plurality of lenticular patterns each having a convex lens-shaped cross section and arranged side by side in one direction.

The multi-view display device according to each embodiment of the present application includes a plurality of pixels between the first and second substrates, and a lenticular array formed of a plurality of lenticular patterns having convex lens-shaped cross sections protruding toward the display panel.

Thus, the convex surface of the lenticular pattern and the spacing distance between the plurality of pixels can be reduced by not including the thickness of the lenticular array, thereby increasing the viewing angle and viewing area of the multi-view display device.

Since the process of reducing the thickness of the second substrate may not be performed in order to reduce the distance between the convex surface of the lenticular pattern and the plurality of pixels, an increase in manufacturing time and an increase in manufacturing cost can be prevented .

Further, since the lenticular array is formed of a resin containing scattering particles, the light emitted from the display device is scattered by the scattering particles in the lenticular pattern array, so that the stain caused by mutual interference of the light in the adjacent viewing directions can be prevented, The brightness of the multi-view display device can be improved.

1A is a cross-sectional view illustrating a general time-lag display device of a parallax barrier type.
1B is a cross-sectional view showing a general lenticular multi-view display device.
2 is a cross-sectional view illustrating a multi-view display device according to a first embodiment of the present invention.
3 is a plan view showing a plurality of pixels and a lenticular pattern in the multiple visual display device of FIG.
4 is a cross-sectional view illustrating a multi-view display device according to a second embodiment of the present invention.
5 is a cross-sectional view illustrating a multi-view display device according to a third embodiment of the present invention.
6 is a cross-sectional view illustrating a multi-view display device according to a fourth embodiment of the present invention.
7 is a cross-sectional view illustrating a multi-view display apparatus according to a fifth embodiment of the present invention.
8 is a cross-sectional view illustrating a multi-view display device according to a sixth embodiment of the present invention.
Fig. 9 is a plan view showing a plurality of pixels, a lenticular pattern, and a small lenticular pattern in the multiple visual display device of Fig. 8;
10 is a cross-sectional view illustrating a multi-view display device according to a seventh embodiment of the present invention.

Hereinafter, a multi-view display according to each embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a cross-sectional view showing a multi-view display device according to a first embodiment of the present invention, and FIG. 3 is a plan view showing a plurality of pixels and a lenticular pattern in the multiple display device of FIG. 4 is a cross-sectional view illustrating a multi-view display device according to a second embodiment of the present invention.

2, the multi-view display device 100A according to the first embodiment of the present invention includes light for displaying two or more different images corresponding to two or more different viewing directions (hereinafter referred to as "display light" And a light path changing panel 120 for separating the display light into images in respective viewing directions.

The display panel 110 includes first and second substrates 111 and 112 opposed to each other and a plurality of pixels 113 defined between the first and second substrates 111 and 112.

Each of the plurality of pixels 113 corresponds to any one of two or more viewing directions V1, V2, and V3.

Illustratively, when the multi-view display device 100a is a device that provides different images in the first, second, and third viewing directions V1, V2, and V3 corresponding to the front left, center, and right, The plurality of pixels 113 includes a first pixel P1 corresponding to the first viewing direction V1, a second pixel P2 corresponding to the second viewing direction P2, and a third pixel P2 corresponding to the third viewing direction, And a pixel P3.

At this time, in one direction, pixels corresponding to the same viewing direction are arranged in a predetermined arrangement period (PP) (Pixel Arrangement Period). For example, the pixel arrangement periods PP may correspond to the overall widths of the first, second, and third pixels P1, P2, and P3, which are arranged one after the other in a single direction. Alternatively, the pixel arrangement periods PP may correspond to the entire widths of the first, second, and third pixels P1, P2, and P3 arranged in two or more lines in a single direction.

The display panel 110 further includes a black matrix 114 formed in a boundary region between a plurality of pixels P1, P2, and P3. The black matrix 114 is for blocking light leakage generated in a boundary region between a plurality of pixels P1, P2, and P3.

Although not separately shown in FIG. 2, the first substrate 111 of the display panel 110 includes a gate line and a data line crossing each other such that a plurality of pixels P1, P2, and P3 are defined, and a crossing region May be a thin film transistor array substrate including a plurality of thin film transistors formed corresponding to a plurality of pixels (P1, P2, P3). A light emitting material or a polarizing material is interposed between the first and second substrates 111 and 112.

In this case, the display panel 110 is formed between the first and second substrates 111 and 112 and includes a plurality of pixels P1 and P2 , And P3).

Alternatively, the display panel 110 may be a liquid crystal panel. In this case, the display panel 110 includes a liquid crystal layer formed between the first and second substrates 111 and 112. At this time, the multi-view display device 100A includes a backlight unit (not shown) for irradiating light toward the display panel 110, and upper and lower polarizers 131 and 132 formed at the upper and lower portions of the display panel 110 . Here, the upper polarizer 131 may be formed between the display panel 110 and the light path conversion panel 120.

It is needless to say that the display panel 110 can be applied to any flat panel display panel driven by an active matrix method.

The optical path changing panel 120 includes a support film 121 opposed to the display panel 110, a lenticular array 122 formed on one surface of the support film 121, and a lenticular array 122 on the display panel 110 And an adhesive film 123 for attaching the adhesive film 123.

The lenticular array 122 is composed of a plurality of lenticular patterns (LPs) arranged in parallel in one direction.

Each lenticular pattern LP has a convex lens-shaped cross section projecting toward the display panel 110 side. That is, each lenticular pattern LP includes a convex surface (CS) toward the display panel 110 side. At this time, the vertex (CENTER POINT) of the convex surface (CS) of each lenticular pattern (LP) can contact the adhesive film (123).

Each lenticular pattern LP is formed of a resin material containing scattering particles (SP: scattering particles). At this time, the scattering particles SP are formed of at least one of air bubbles (AIR) and beads (BEADS) having a refractive index smaller than that of the resin material.

Accordingly, the display light emitted from the display panel 110 is divided into the respective viewing directions V1, V2, and V3 by the lenticular pattern LP, and the scattered particles SP in the lenticular pattern LP, Lt; / RTI > Thereby, a smear phenomenon due to interference between the plurality of pixels (P1, P2, P3) can be prevented, so that the image quality of the display device 100A can be improved.

As shown in Fig. 3, the plurality of pixels P1, P2, and P3 are arranged in a matrix.

Illustratively, the pixels arranged side by side in one direction (the lateral direction in Fig. 3) correspond to different viewing directions. On the other hand, the pixels arranged side by side in the other one direction (vertical direction in Fig. 3) correspond to the same viewing direction. At this time, the pixels arranged in one direction in parallel can emit any one of red, green, blue and white colors equally.

Each of the plurality of lenticular patterns LP is formed into a semi-cylindrical shape having a height parallel to the direction in which pixels corresponding to the same viewing direction are arranged (the vertical direction in Fig. 3). The width LW of each lenticular pattern LP corresponds to the pixel arrangement period PP.

Illustratively, the cross-sectional width LW of the lenticular pattern LP is equal to or larger than a threshold width at which light of each of the pixels P1, P2, and P3 corresponding to one pixel arrangement period PP can enter, (PP) or less.

As described above, according to the first embodiment of the present invention, the plurality of lenticular patterns LP are formed so that each convex surface CS protrudes toward the display panel 110 side. Thus, the distance DA between the convex surface CS of the lenticular pattern LP and the plurality of pixels 113 is reduced by not including the thickness of the lenticular array 122 itself.

As the distance DA between the convex surface CS of the lenticular pattern LP and the plurality of pixels 113 decreases, the viewing angle and the viewing area of the multi-viewing display device 100A can be easily increased There is an advantage.

Thus, in order to increase the viewing angle and the viewing area, an etching process for reducing the thickness of the structure disposed between the lenticular array 122 and the plurality of pixels 113, that is, the second substrate 112, Lapping and polishing may not be performed, so that an increase in manufacturing time and manufacturing cost can be prevented.

In addition, when the uniformity of brightness of each pixel P1, P2, and P3 is low, there is a process error in alignment of the black matrix 114, and when alignment of the first and second substrates 111 and 112 As a result of mutual interference between the light of adjacent pixels due to at least one of the cases where there is an error, the unevenness easily occurs and the image quality may be deteriorated.

However, according to the first embodiment of the present application, since the lenticular array 122 is formed of a resin material containing scattering particles SP, there is an advantage that stain can be prevented. As a result of the simulation, it was confirmed that the scattering particles (SP) reduce the spots by about 20%.

The upper polarizer 131 is formed between the display panel 110 and the light path changing panel 120 so that the distance between the lenticular array 122 and the plurality of pixels 113 DA), the thickness of the upper polarizer 131 is added. Thereby, there may be a limit in reducing the separation distance DA between the lenticular array 122 and the plurality of pixels 113. [

Thus, as shown in FIG. 4, according to the second embodiment of the present invention, the upper polarizer 131 'is formed on the other surface of the support film 121. Accordingly, since the thickness of the upper polarizer 131 'is not included in the distance DB between the lenticular pattern LP and the plurality of pixels 113, the separation distance DB according to the second embodiment is smaller than that of the first Is reduced in comparison with the separation distance DA according to the embodiment.

As shown in FIG. 4, the multi-view display device 100B according to the second embodiment includes the upper polarizer 131 'formed on the other surface of the support film 121, 3, the description of the duplicate description will be omitted below.

On the other hand, the light in the adjacent visual direction interferes with each other and, as a result, unevenness may occur, and the image quality may deteriorate. In particular, when the planes of the pixels P1, P2, and P3 extend in two or more directions, that is, in a multi-domain form as shown in FIG. 3, moire irregularities due to mutual interference may occur .

Hereinafter, the third to seventh embodiments of the present invention will be described in which stains caused by mutual interference of lights in adjacent visual directions can be prevented.

5 is a cross-sectional view illustrating a multi-view display device according to a third embodiment of the present invention. 6 is a cross-sectional view illustrating a multi-view display device according to a fourth embodiment of the present invention. 7 is a cross-sectional view illustrating a multi-view display apparatus according to a fifth embodiment of the present invention. FIG. 8 is a cross-sectional view illustrating a multi-view display device according to a sixth embodiment of the present invention, and FIG. 9 is a plan view showing a plurality of pixels, a lenticular pattern, and a small lenticular pattern in the multi-view display device of FIG. 10 is a cross-sectional view illustrating a multi-view display device according to a seventh embodiment of the present invention.

As shown in Fig. 5, the multi-view display device 100C according to the third embodiment of the present invention further includes a barrier layer 140 blocking interfering light between a plurality of lenticular patterns LP.

The barrier layer 140 includes a light shielding pattern 141 corresponding to an interference region between a plurality of lenticular patterns LP. At this time, the width of the light shielding pattern 141 is less than the sectional width (LW in Fig. 3) of the lenticular pattern LP.

Here, the upper polarizer 131 'may be formed on the other surface of the support film 121. Alternatively, as in the first embodiment of FIG. 2, the upper polarizer 131 may be formed between the display panel 110 and the light path conversion panel 120.

As shown in FIG. 5, the multi-view display 100C according to the third embodiment of the present invention includes the barrier layer 140, 100A, and 100B, so that redundant description will be omitted below.

According to the third embodiment, since the barrier layer 140 is disposed between the lenticular array 122 and the plurality of pixels 113, the spacing DA between the lenticular array 122 and the plurality of pixels 113 The thickness of the barrier layer 140 is added. Thereby, there may be a limit in reducing the separation distance DA between the lenticular array 122 and the plurality of pixels 113. [

6, the barrier layer 140 'is formed on the other surface of the support film 121, according to the fourth embodiment of the present invention. The distance DD between the lenticular array 122 and the plurality of pixels 113 does not include the thickness of the barrier layer 140 ' (DC in Fig. 5) according to the embodiment.

6, the barrier layer 140 'and the upper polarizer 131' may be formed on the other surface of the support film 121 in this order, but this is merely an example, and the barrier layer 140 ' And the upper polarizer 131 'may be formed in the reverse order.

6, the multiple time display device 100D according to the fourth embodiment includes a barrier layer 140 'formed on the other surface of the support film 121, 100A, 100B, and 100C shown in FIGS. 5A and 5B, and thus redundant description will be omitted below.

7, according to the fifth embodiment of the present invention, in order to prevent interference between a plurality of lenticular patterns LP, a plurality of lenticular patterns LP may have a predetermined separation distance (SD) Respectively. At this time, the spacing distance SD between the plurality of lenticular patterns LP is smaller than the width SW of the light shielding pattern 141.

7, the multi-view display device 100E according to the fifth embodiment includes a plurality of lenticular patterns LP spaced apart from each other by a distance SD less than the width of the light shielding pattern 141 And 100D, 100C and 100D shown in Figs. 5 and 6, and thus redundant description will be omitted below.

8, the multi-view display device 100F according to the sixth embodiment is formed on the other surface of the support film 121 in order to further prevent interference between the plurality of lenticular patterns LP And further includes a small lenticular array 150.

The small lenticular array 150 is formed of a plurality of small lenticular patterns (SLPs) formed in a smaller width than a plurality of lenticular patterns LP.

The plurality of small lenticular patterns SLP are arranged on one surface of the base film 151 opposite to the display panel 110 in parallel with the plurality of lenticular patterns LP in one direction.

Each of the small lenticular patterns SLP is formed to have a convex lens-shaped cross section protruded to the other side.

The plurality of small lenticular patterns SLP are formed of a resin material including scattering particles SP similarly to the plurality of lenticular patterns LP. At this time, the scattering particles SP may be air bubbles (AIR) or beads (BEADS) having a smaller refractive index than the resin material.

Illustratively, a plurality of small lenticular patterns (SLP) may be formed of the same material as the plurality of lenticular patterns (LP).

The small lenticular array 150 is attached to the other surface of the support film 121 through a separate adhesive layer 152.

9, when a plurality of lenticular patterns LP are arranged in parallel in the first direction AXIS_1 (left and right direction in Fig. 9), the plurality of small lenticular patterns SLP are arranged in the first direction AXIS_1, (AXIS_2 (direction between upper left and lower right in Fig. 9) intersecting with an angle ANG of less than 90 degrees. That is, the internal angle ANG between the first direction AXIS_1 and the second direction AXIS_2 is 0 degrees or more and less than 90 degrees. For reference, ANG in Fig. 9 is 37 degrees.

An angle ANG in which the second direction AXIS_2 is inclined with respect to the first direction AXIS_1 is a moire pattern according to the multi-domain plane shape of the plurality of lenticular patterns LP and pixels (P1, P2, and P3 in FIG. 3) As shown in FIG.

As described above, the multi-view display device 100F according to the sixth embodiment of the present invention further includes the small lenticular array 150 in addition to the lenticular array 122, thereby preventing spots and moiré. Particularly, since the small lenticular array 150 is formed of a resin material including scattering particles SP, like the lenticular array 122, moire can be further prevented by light scattering by the small lenticular array 9150) .

Since the small lenticular array 150 according to the sixth embodiment is formed on the base film 151 and is attached to the other surface of the support film 121 by a separate adhesive layer 152, The thickness of the adhesive layer 152 may deteriorate the thinness of the display device 100F.

As shown in FIG. 10, according to the seventh embodiment, the small lenticular array 150 'includes a plurality of small lenticular patterns SLP' formed on the other surface of the support film 121. At this time, each small lenticular pattern SLP 'has a convex lens-shaped cross section protruding in a direction in which display light of the display panel 110 is emitted (upward in FIG. 10).

8 and 9, except that a small lenticular array 150 'is formed on the other surface of the support film 121, the multi-time display device 100G according to the seventh embodiment, as shown in FIG. 10, Is the same as the sixth embodiment 100F shown in FIG.

As described above, the multiple visual display devices 100A, 100B, 100C, 100D, 100E, 100F, and 100G according to the embodiments of the present invention are configured such that a convex lens (not shown) protruding toward the display panel 110 on one surface of the support film 121, And a plurality of lenticular patterns LP that are not the support film 121 are formed on the display panel 110 through the adhesive film 123. The lenticular lens array 122 includes a plurality of lenticular patterns LP, Respectively. The thickness of the supporting film 121 and the thickness of the lenticular pattern LP itself are not added to the convex surface CS of the lenticular pattern LP and the spacing DA between the plurality of pixels 113, The distances DA, DB, DC, and DD between the array 122 and the plurality of pixels 113 can be reduced. Illustratively, the separation distances DA, DB, DC and DD may be between 100 and 750 nm.

This reduces the luminance of the lenticular system and reduces the separation distances DA, DB, DC, and DD between the lenticular array 122 and the plurality of pixels 113 through the structural change, The area can be easily increased.

Since the lenticular array 122 is formed of a resin material containing scattering particles SP, scattering due to light scattering by the scattering particles SP can be reduced and thereby image quality can be improved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of.

100A, 100B, 100C, 100D, 100E, 100F, and 100G:
110: display panel 111: first substrate
112: second substrate 113: plural pixels
114: Black Matrix
V1, V2, V3: first, second and third viewing directions
P1, P2, and P3: first, second, and third pixels
131, 131 ': Upper polarizer
LP, LP ': lenticular pattern SP: scattering particle
CS: convex surface of lenticular pattern
140, 140 ': barrier layer 141: shielding pattern
150, 150 ': Small lenticular array
SLP, SLP ': Small lenticular pattern

Claims (10)

A liquid crystal display device comprising first and second substrates facing each other and a plurality of pixels defined between the first and second substrates and corresponding to at least one of two or more viewing directions, A display panel for emitting display light for displaying different images; And
And a light path changing panel disposed on the display panel and separating the display light into the images in the respective directions of the eyes,
Wherein the optical path changing panel comprises a support film opposed to the display panel, a lenticular array formed of a plurality of lenticular patterns arranged in one direction on one surface of the support film, and an adhesive film for attaching the lenticular array to the display panel / RTI >
Wherein the lenticular array is formed of a resin material containing scattering particles composed of at least one of bubbles and beads,
Wherein each of the lenticular patterns has a cross section of a convex lens shape protruding toward the display panel. delete The method according to claim 1,
Further comprising upper and lower polarizers formed on upper and lower portions of the display panel,
Wherein the upper polarizer is formed between the display panel and the light path changing panel. The method according to claim 1,
Further comprising upper and lower polarizers formed on upper and lower portions of the display panel,
And the upper polarizer is formed on the other surface of the support film. The method according to claim 1,
And a barrier layer formed between the lenticular array and the display panel, the barrier layer including a shielding pattern corresponding to an interference region between the plurality of lenticular patterns. The method according to claim 1,
And a barrier layer formed on the other surface of the support film, the barrier layer including a light shielding pattern corresponding to an interference region between the plurality of lenticular patterns. The method according to claim 5 or 6,
Wherein the plurality of lenticular patterns are spaced apart from each other by a distance smaller than the width of the light shielding pattern. The method according to claim 1,
Further comprising a small lenticular array formed of a resin material containing the scattering particles on the other surface of the support film,
Wherein the small lenticular array is formed of a plurality of small lenticular patterns formed in a smaller width than the plurality of lenticular patterns,
Wherein the plurality of small lenticular patterns are arranged side by side in one direction in which the plurality of lenticular patterns are arranged and in another direction intersecting at an angle of less than 90 degrees. 9. The method of claim 8,
Wherein the small lenticular pattern is formed on one surface of the base film so as to have a convex lens-shaped cross section projecting to the other surface of the support film. 9. The method of claim 8,
Wherein the small lenticular pattern is formed on the other surface of the support film so as to have a convex lens-shaped cross section protruding in a direction in which light of the display panel is emitted.

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