KR20200026501A - Light route control member and display device - Google Patents

Abstract

The present invention relates to a light path control member and a display device including the same. According to an embodiment of the present invention, the light path control member comprises: a base substrate; a resin layer disposed on the base substrate and including a plurality of intaglio parts and a plurality of embossing parts spaced apart from each other; a plurality of pattern parts disposed within the intaglio parts and spaced apart from each other; and a pattern layer disposed on the resin layer. The pattern layer includes a substrate and a plurality of patterns on the substrate and the diameter of each of the patterns is 15 μm or less. According to an embodiment of the present invention, the display device comprises: a display panel; a light path control member disposed on the display panel; and a pattern layer disposed between the display panel and the light path control member. The light path control member includes: a resin layer disposed on the display panel and including a plurality of intaglio parts and a plurality of embossing parts spaced apart from each other; a plurality of pattern parts disposed within the intaglio parts and spaced apart from each other; and a base material disposed on the resin layer. The pattern layer is disposed between the display panel and the resin layer. The pattern layer includes a substrate and a plurality of patterns on the substrate and the diameter of each of the patterns is 15 μm or less.

Description

LIGHT ROUTE CONTROL MEMBER AND DISPLAY DEVICE}

Embodiments are directed to an optical path control member and a display device including the same.

The light shielding film blocks light from being transmitted from the light source. The light blocking film is attached to the front of a display panel, which is a display device used for a mobile phone, a notebook, a tablet PC, a car navigation device, a car touch, and the like. By adjusting the viewing angle of the light according to the user is used for the purpose of expressing a clear image quality at the required viewing angle.

In addition, it may be used for windows of vehicles or buildings to shield some external light to prevent glare or to make the interior invisible from the outside.

That is, the light shielding film can control the movement path of the light to block light in a specific direction and transmit light in the specific direction.

On the other hand, such a light shielding film may be applied to a display device such as a navigation, a vehicle instrument panel in a moving means such as a vehicle. That is, the light blocking film may be applied to various fields in accordance with various purposes.

On the other hand, the light blocking film may be formed with a plurality of patterns for converting the path of the light on the transparent substrate, in order to control the path of the light.

When the light blocking film including the patterns is applied to the display device, the electrodes and the patterns of the display device may be disposed to overlap each other, and the moiré phenomenon may occur due to the overlapping phenomenon.

Therefore, there is a need for a light path control member having a new structure that can prevent moiré phenomena according to patterns.

Embodiments provide an optical path control member having improved light blocking characteristics and capable of reducing moiré phenomenon and the like.

An optical path control member according to an embodiment includes a base substrate; A resin layer disposed on the base substrate and including a plurality of intaglio portions and the plurality of embossed portions spaced apart from each other; A plurality of pattern parts disposed in the plurality of intaglio parts and spaced apart from each other; And a pattern layer disposed on the resin layer, wherein the pattern layer includes a substrate and a plurality of patterns on the substrate, and the diameter of each pattern is 15 μm or less.

A display device according to an embodiment includes a display panel; An optical path control member disposed on the display panel; And a pattern layer disposed between the display panel and the light path control member, wherein the light path control member includes a plurality of indentations and a plurality of indentations disposed on the display panel and spaced apart from each other. Resin layer; A plurality of pattern parts disposed in the plurality of intaglio parts and spaced apart from each other; And a base substrate disposed on the resin layer, wherein the pattern layer is disposed between the display panel and the resin layer, and the pattern layer includes a substrate and a plurality of patterns on the substrate, each pattern of The diameter is 8 µm to 15 µm.

The light path control member according to the embodiment may prevent the moiré phenomenon generated when the pattern serving as the light absorbing portion and the patterns of the light source member coupled to the light path control member overlap.

That is, a pattern layer is disposed between the pattern of the light path control member and the pattern of the display panel or a separate additional pattern layer is disposed on the light path control member, so that the pattern of the light path control member overlaps with the pattern of the display panel. By randomly blurring the regular patterns, the moiré phenomenon due to the overlapping of the regular patterns can be minimized.

Accordingly, the optical path control member according to the embodiment may minimize visibility of the moire phenomena so that the visibility of the optical path control member and the display device coupled thereto may be changed.

1 is an exploded perspective view of an optical path control member according to an embodiment.
2 is a view showing a top view of the light path control member according to the embodiment.
3 is a cross-sectional view of the pattern portion not disposed in the AA ′ region of FIG. 2.
4 is a cross-sectional view of the AA ′ region of FIG. 2.
5 is a diagram illustrating a perspective view of a pattern layer of the light path member according to the embodiment.
FIG. 6 is a cross-sectional view of the region BB ′ of FIG. 5.
7 is a diagram illustrating another perspective view of the pattern layer of the light path member according to the embodiment.
FIG. 8 is a cross-sectional view of the CC ′ region of FIG. 7.
9 is a sectional view in which the resin layer and the pattern layer of the light path control member according to the embodiment are bonded.
10 is a view showing another cross-sectional view in which the resin layer and the pattern layer of the light path control member according to the embodiment are bonded.
FIG. 11 is a view showing another cross-sectional view in which the resin layer and the pattern layer of the light path control member according to the embodiment are bonded. FIG.
12 to 15 are photographs for describing a moiré phenomenon of a display panel to which an optical path control member according to an exemplary embodiment and a comparative example is applied.
16 is a cross-sectional view of a display device to which an optical path control member is applied, according to an exemplary embodiment.
17 is a diagram illustrating an example of a display apparatus to which an optical path control member is applied, according to an exemplary embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the technical idea of the present invention is not limited to some embodiments described, but may be implemented in various forms, and within the technical idea of the present invention, one or more of the components between the embodiments may be selectively selected. Can be combined and substituted.

In addition, the terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those skilled in the art to which the present invention pertains, unless specifically defined and described. The terms commonly used, such as terms defined in advance, may be interpreted as meanings in consideration of the contextual meaning of the related art.

In addition, the terms used in the embodiments of the present invention are intended to describe the embodiments and are not intended to limit the present invention. In this specification, the singular may also include the plural unless specifically stated otherwise, and when combined with “A, and B, C, at least one (or more than one)”, combine as A, B, C. May contain one or more of all possible combinations.

In addition, in describing the components of the embodiments of the present disclosure, terms such as first, second, A, B, (a), and (b) may be used. These terms are only to distinguish the components from other components, and the terms are not limited to the nature, order, order, or the like of the components.

And when a component is described as being 'connected', 'coupled' or 'connected' to another component, the component is not only connected, coupled or connected directly to the other component, It may also include the case where 'connected', 'coupled' or 'connected' due to another component between the other components.

In addition, when described as being formed or placed on the "top (or bottom)" of each component, the top (bottom) or bottom (bottom) is not only when two components are in direct contact with each other, but also It also includes a case where the above-described further components are formed or disposed between two components.

In addition, when expressed as "up (up) or down (down)" may include the meaning of the down direction as well as the up direction based on one component.

Hereinafter, an optical path control member according to an embodiment will be described with reference to the drawings.

1 to 4, the optical path control member according to the embodiment may include a base substrate 100, a resin layer 150, and a pattern portion 200.

The base substrate 100 may include a transparent material. The base substrate 100 may include a flexible material.

For example, the base substrate 100 may include a plastic material. For example, the base substrate 100 is polyethylene terephthalate (PET), polycarbonate (PC), urethane acrylate resin, urethane melamine resin, polymethyl methacrylate, polyurethane resin, nylon resin, silicone resin, PI , TAC, Pol film may include at least one material.

One of the transverse direction and the longitudinal direction of the base substrate 100 may be a long side direction, the other is a short side direction, the base substrate may have a rectangular parallelepiped shape. Alternatively, the sides of the base substrate 100 in the horizontal direction and the vertical direction may have the same size, and the base substrate may have a cube shape.

The base substrate 100 may include one side and the other side. For example, the base substrate 100 may include one surface and the other surface opposite to the one surface based on the thickness direction of the base substrate 100.

One surface of the base substrate may be defined in a direction viewed by the user. In addition, the other surface of the base substrate may be defined in a direction in which a light source such as a display panel is disposed. That is, light is emitted from a light source such as a display panel, and outgoing light is incident on the other surface direction of the base substrate, and a display is displayed, so that the user may visually recognize the display on one surface of the base substrate.

The resin layer 150 may be disposed on the base substrate 100. The resin layer 150 may be disposed in direct contact with the base substrate 150. The resin layer 150 may include a photocurable resin or a thermosetting resin such as a UV resin.

For example, the resin layer 150 may include the same or similar material as that of the base substrate.

Alternatively, the resin layer 150 may include the same material as the base substrate 100. For example, the resin layer 150 may be integrally formed with the base substrate 100.

The resin layer 150 may be disposed on the other surface of the base substrate 100. That is, the resin layer 140 may be disposed on the other surface of the base substrate 100 on which the display panel is disposed.

The resin layer 150 may include a lower surface 1S and an upper surface 2S. In detail, the bottom surface 1S of the resin layer may be defined as a surface adjacent to the other surface of the base substrate 100. In addition, the upper surface 2S of the resin layer may be defined as a surface opposite to the lower surface 1S of the resin layer.

Referring to FIG. 3, an intaglio portion may be formed on an upper surface of the resin layer 150. In detail, the resin layer 150 may have a plurality of intaglio portions E1 formed to partially penetrate the upper surface 2S. The intaglio portions may be formed by an imprinting process by disposing a mold on the upper surface 2S of the resin layer 150.

The intaglio portions are formed by etching through the upper surface 2S of the resin layer by a predetermined depth. Accordingly, a plurality of groove-shaped intaglio portions having one end opening and the other end being closed may be formed in the resin layer. have.

Accordingly, intaglio parts E1 and embossed parts E2 between the intaglio parts E1 may be formed on the resin layer 150.

The engraved parts E1 and the embossed parts E2 may be alternately disposed. That is, the intaglio portion E1 may be disposed between the embossed portions E2, and the embossed portion E2 may be disposed between the intaglio portions E1.

2 and 4, the pattern portion 200 may be disposed on the base substrate 100. The pattern unit 200 may be disposed on the resin layer 150 on the base substrate 100. In detail, the pattern portion 200 may be disposed in the intaglio portions formed in the resin layer 150.

The pattern unit 200 is disposed in each of a plurality of intaglio portions, and accordingly, the pattern unit 200 may include a plurality of pattern portions spaced apart from each other.

The pattern unit 200 may include a material having a small light transmittance. The pattern unit 200 may include an opaque material. The pattern unit 200 may include a colored material. For example, the pattern 200 may include black ink.

For example, the black ink may include at least one of black carbon ink and black carbon beads. For example, the black ink may be formed by adding carbon beads to the carbon ink.

That is, the pattern unit 200 may be a light blocking pattern.

In addition, the embossed portion E2 of the pattern portion 200 and the resin layer 150, that is, the non-pattern portion may have different light transmittances. In detail, the light transmittance of the light passing through the embossed portion E2 of the resin layer 150 may be greater than the light transmittance of the light passing through the pattern portion 200.

That is, light incident on the light path control member may be transmitted through the embossed portion E2 of the resin layer 150, and may be blocked by the pattern portion 200. That is, the embossed portion E2 may be a light transmitting portion, and the pattern portion 200 may be a light absorbing portion.

In detail, the movement path of the light of the incident light may be changed by the pattern unit 200. That is, the light path control member according to the embodiment may partially block and partially transmit incident light, such that light is transmitted only at a desired angle and at a desired position.

For example, the path of the light in the vertical direction or the left and right directions based on the user may be controlled by the pattern unit 200. That is, according to the direction in which the pattern portion extends, light that deviates from a specific angle or more in an up and down direction or a left and right direction based on the viewing angle of the user may not be transmitted.

For example, when the light path control member according to the embodiment is applied to a vehicle, it is possible to prevent a virtual image or the like which is recognized by reflecting light on the left and right windows of the vehicle or the windshield of the vehicle while driving. Accordingly, it is possible to prevent the virtual image obstructing the field of view while driving the vehicle, thereby preventing the risk of accidents and the like.

In addition, when there are other people around the user, privacy can be secured from others by blocking observation by others outside the range of the front viewing angle.

A protective layer disposed on the upper surface 2S of the resin layer may be disposed on the resin layer 150. The protective layer may be disposed while covering the pattern portion 200 inside the intaglio portion of the resin layer. Accordingly, the pattern portion can mitigate external shocks by the protective layer, and can prevent infiltration of impurities such as moisture.

In addition, the protective layer may have an adhesive function. That is, the protective layer may include a release film, and may be bonded to each other by removing the release film when the other member and the light path member are bonded. That is, since the adhesive force of the protective layer is formed larger than the adhesive force of the resin layer, adhesion between the other member and the light path member may be facilitated.

Meanwhile, the width w of the pattern portion 200 may be about 10 μm or less. In detail, the width w of the pattern part 200 may be about 1 μm to about 10 μm. In more detail, the width w of the pattern portion 200 may be about 3 μm to about 8 μm.

When the width w of the pattern portion 200 exceeds about 10 μm, the size of the light path control member may be increased by the width of the pattern portion, and the width of the pattern portion serving as light shielding is increased, As the area through which light is transmitted is reduced, the overall luminance of the light path control member may be lowered.

In addition, when the width w of the pattern portion 200 is less than about 1 μm, the area supporting the pattern portion may be reduced, whereby the light blocking effect by the pattern portions may be reduced, and the pattern portion may be affected by an external impact. It can be easily damaged, and the reliability can be lowered.

In addition, the height h of the pattern portion 200 may be about 120 μm or less. In detail, the height h of the pattern portion 200 may be about 20 μm to about 120 μm. In more detail, the height h of the pattern portion 200 may be about 50 μm to about 100 μm.

The height h of the pattern portion 200 may be defined as a distance from an upper region of the pattern portion to the lower region. In detail, the height h of the pattern part 200 may be defined as the distance from the lowest point of the upper region to the lowest point of the lower region.

In detail, the height h of the pattern portion 200 may be defined as a distance from the lowest point of the upper portion of the pattern portion to the lowest point of the lower portion of the pattern portion. That is, the pattern unit 200 may contact the bottom surface of the intaglio portion, and the height of the pattern portion 200 may be defined as a distance from the lowest point of the upper surface of the pattern portion to the lowest point of the intaglio portion.

It is difficult to realize that the height h of the pattern portion 200 exceeds about 120 μm, and the thickness of the light path control member may be increased by the height of the pattern portion 200, resulting in slimming. Difficult to implement

In addition, as the height of the pattern portion 200 is increased, the force for supporting the pattern is reduced, so that the pattern portion may be easily damaged by an external impact, thereby reducing reliability.

In addition, when the height of the pattern portion 200 is increased, the width of the pattern portion should be increased in order to improve the force supporting the pattern portion. In this case, the area where the light is blocked becomes too wide and the front transmittance is reduced. Visibility may be lowered.

In addition, the height h of the pattern portion 200 may be equal to or less than an inner depth of the intaglio portion formed in the resin layer 150. As a result, when the optical path control member including the pattern unit 200 and the display are coupled to each other, adhesion failure due to a pattern exposed to the outside may be prevented, thereby improving reliability. In detail, the upper surface of the pattern portion 200 may include a concave shape, and by the concave shape, an area in which the pattern portion is not filled may be formed inside the intaglio portion of the resin layer 150.

Preferably, the pattern portion 200 may be disposed at a height of 90% or more and less than 100% of the maximum depth of the intaglio portion formed in the resin layer 150. In detail, the pattern portion 200 may be disposed at a height of 91% or more and less than 98% of the maximum depth of the intaglio portion formed in the resin layer 150. In detail, the pattern portion 200 may be disposed at a height of 93% or more and less than 96% of the maximum depth of the intaglio portion formed in the resin layer 150.

In addition, when the height of the pattern portion h is less than about 20 μm, the light blocking effect by the pattern portions may be reduced. In addition, the height of the pattern portion is too low to be visible to other users outside the required viewing angle range may cause privacy problems,

In addition, a virtual image may be displayed on a windshield or a window of the vehicle, thereby obstructing the user's view, and a decrease in brightness and a moiré phenomenon may occur at a viewing angle viewed by the user due to the dispersion of light.

5 to 8, a pattern layer 300 may be disposed on the base substrate 100. In detail, the pattern layer 300 may be disposed on the upper surface 2S of the resin layer 150.

The resin layer 150 and the pattern layer 300 may be bonded to each other. In detail, an adhesive layer may be disposed between the resin layer 150 and the pattern layer 300, and the resin layer 150 and the pattern layer 300 may be adhered to each other through the adhesive layer.

The pattern layer 300 may include a substrate 310 and a plurality of patterns 320 disposed on the substrate 310.

The substrate 310 may include the same or similar material as the base substrate 100. For example, the substrate 310 may include plastic. In one example, the substrate 310 is polyethylene terephthalate (PET), polycarbonate (PC), urethane acrylate resin, urethane melamine resin, polymethyl methacrylate, polyurethane resin, nylon resin, silicone resin, PI, TAC It may include at least one material of the Pol film.

A plurality of patterns 320 may be disposed on the substrate 310. In detail, a plurality of patterns 320 disposed to be spaced apart from each other may be disposed on the substrate 310.

The patterns 320 may be formed in a hemispherical shape. For example, the patterns 320 may be microlens arrays (MLAs).

5 and 6, the sizes of the patterns 320 may be arranged to be the same size. In detail, the patterns 320 on the substrate 310 may be formed in the same size with the same shape.

In detail, the diameters R of the patterns 320 may be about 15 μm or less. In detail, the diameters R of the patterns 320 may be 8 μm to 15 μm.

When the diameter of the patterns 320 exceeds 15 μm, the area of the pattern layer is increased by the number of the patterns 320, so that the overall size of the light path member may be increased. In addition, when the diameter of the patterns 320 is less than 8 μm, when the light path control member is combined with the display panel, the moiré may not be completely removed, and visibility may be degraded.

That is, the patterns 320 on the substrate 310 may be disposed to have the same diameter within the numerical range. That is, the patterns 320 are arranged in a regular arrangement having the same diameter within the numerical range.

In addition, referring to FIGS. 7 and 8, the sizes of the patterns 320 may be arranged in different sizes. In detail, the patterns 320 on the substrate 310 may be formed in different shapes or different sizes.

In detail, the patterns 320 may include two or more patterns having different sizes. That is, the diameters of the patterns 320 may be arranged while having different diameters within the numerical range and may be arranged in a random shape.

For example, the patterns 320 may include a first pattern 321 and a second pattern 322 having different diameters. In this case, the diameter R1 of the first pattern 321 may be larger than the diameter R2 of the second pattern 322.

That is, the patterns 320 on the substrate 310 may be disposed at different diameters within the numerical range. That is, the patterns 320 may be arranged in an irregular arrangement having the same diameter within the numerical range.

The patterns 320 may be spaced apart from each other. That is, the patterns 320 may be spaced apart from each other such that one surface of the substrate 310 is exposed between the patterns 320.

For example, the separation distance d of the patterns 320 may be about 2 μm to about 4 μm. When the patterns 320 are disposed to be less than about 2 μm, the patterns 320 may be separated. The size of the patterns 320 having an unwanted size may be formed by overlapping each other. In addition, when the patterns 320 are spaced apart by more than about 4 μm, due to the separation distance of the patterns 320, the size of the substrate 310 may be increased to increase the size of the overall light path control member. .

As the patterns 320 are spaced apart from each other, a pattern region PA in which the patterns 320 are disposed and a non-pattern region NPA in which the patterns are not disposed may be formed in the substrate 310.

In this case, the pattern area PA and the non-pattern area NPA may be formed in a predetermined area. For example, the size of the pattern area PA may be about 43% to about 60% of the entire area. In addition, the size of the non-patterned area NPA may be about 40% to 57% of the entire area.

The size of the pattern area PA and the size of the non-pattern area NPA are for maximizing the amount of light passing through the pattern layer into the resin layer, and when outside the range, the light transmittance decreases. Thus, the overall luminance of the light path control member can be lowered.

Meanwhile, referring to FIGS. 9 to 11, the pattern layer may be disposed at various positions.

Referring to FIG. 9, the pattern layer 300 may be disposed on an upper surface of the resin layer 150. That is, the substrate 310 may be disposed on the top surface of the resin layer 150, and the plurality of patterns 320 may be disposed on the substrate 310.

That is, the pattern layer 300 may be disposed on a surface opposite to a surface of the user facing the light path control member.

Alternatively, referring to FIG. 10, the pattern layer 300 may be disposed on the bottom surface of the resin layer 150. That is, the pattern layer 300 may be disposed on one surface of the base substrate 100. In detail, the substrate 310 may be disposed on one surface of the base substrate 100, and a plurality of patterns 320 may be disposed on the substrate 310.

That is, the pattern layer 300 may be disposed on a surface of the user facing the light path control member.

Alternatively, referring to FIG. 11, the description of the pattern layer 300 may be omitted, and only the patterns 320 may be disposed on the resin layer 150. That is, the resin layer 150 may serve as a supporting substrate for supporting the patterns. Accordingly, the size of the light path control member can be reduced and the transmittance can be improved by omitting a separate substrate supporting the patterns.

Hereinafter, the present invention will be described in more detail through moiré observation of an optical path control member according to embodiments and comparative examples. These examples are merely given to illustrate the invention in more detail. Therefore, the present invention is not limited to these examples.

Example  One

After the UV resin was disposed on the polyethylene terephthalate substrate, a plurality of indents and a plurality of indents disposed between the plurality of indents were formed on the UV resin by an imprinting process.

Subsequently, black ink was filled through screen printing in the intaglio portions to form a pattern portion in the intaglio portions.

Subsequently, black ink adhering to areas other than the intaglio portion was removed to prepare a final light path control member.

Next, the light path control member was positioned on the display panel, and a pattern layer including a plurality of hemispherical patterns was disposed between the display panel and the light path control member.

At this time, the diameter of the pattern was 15㎛.

Next, the moiré phenomenon was observed on the upper surface of the substrate.

Example  2

After the light path control member was formed in the same manner as in Example 1 except that the patterns had different diameters of 5 μm and 15 μm, the moiré phenomenon was observed on the upper surface of the substrate.

Comparative example  One

A moiré phenomenon was observed on the upper surface of the substrate after the optical path control member was formed in the same manner as in Example 1 except that the pattern layer was not disposed.

Comparative example  2

After the light path control member was formed in the same manner as in Example 1 except that the diameters of the patterns were 30 μm, the moiré phenomenon was observed on the upper surface of the substrate.

12 is a photograph of Example 1, FIG. 13 is a photograph of Example 2, FIG. 14 is a photograph of Comparative Example 1, and FIG. 15 is a photograph of Comparative Example 2. FIG.

12 to 15, it can be seen that in the light path control member, in the embodiments, the shapes of the patterns are hardly visually recognized from the outside.

That is, the optical path control member of the embodiments in which the diameters of the patterns are controlled to a predetermined size or less and the diameters of the patterns are different may be seen that the visibility of the patterns is not visible from the outside.

On the other hand, in the light path control member according to the comparative examples it can be seen that the patterns are visually recognized from the outside.

That is, when there are no patterns or when the diameter of the patterns exceeds a certain size, it can be seen that the shapes of the patterns are visually recognized from the outside and the visibility is lowered.

The light path control member according to the embodiment may prevent the moiré phenomenon generated when the pattern serving as the light absorbing portion and the patterns of the light source member coupled to the light path control member overlap.

That is, a pattern layer is disposed between the pattern of the light path control member and the pattern of the display panel or a separate additional pattern layer is disposed on the light path control member, so that the pattern of the light path control member overlaps with the pattern of the display panel. By randomly blurring the regular patterns, the moiré phenomenon due to the overlapping of the regular patterns can be minimized.

Accordingly, the optical path control member according to the embodiment may minimize visibility of the moire phenomena so that the visibility of the optical path control member and the display device coupled thereto may be changed.

Below. 16 and 17, a display device and a display device to which an optical path control member according to an embodiment is applied will be described.

Referring to FIG. 16, the light path control member 1000 according to the embodiment may be disposed on the display panel 2000. In addition, the pattern layer 300 described above may be disposed between the light path control member 1000 and the display panel 2000.

The pattern layer 300, the display panel, the pattern layer 300, and the light path control member 1000 may be bonded to each other. For example, the pattern layer 300, the display panel, the pattern layer 300, and the light path control member 1000 may be adhered to each other through an adhesive layer 1500 that transmits light. The adhesive layer 1500 may be transparent. For example, the adhesive layer 1500 may include an adhesive or an adhesive layer including an optically transparent adhesive material.

The adhesive layer 1500 may include a release film. In detail, the adhesive layer is disposed while covering the pattern portion on the resin layer 150 of the optical path control member, and when the adhesive layer is bonded to the pattern layer or the display panel, after removing the release film, the pattern layer and the optical path control. The member and the display panel may be adhered to each other.

Accordingly, the risk of breakage when the pattern portion is exposed to the outside by the adhesive layer 1500 may be prevented. That is, the adhesive layer 1500 may be an adhesive layer and a protective layer.

The display panel 2000 may include a first substrate 2100 and a second substrate 2200. When the display panel 2000 is a liquid crystal display panel, the display panel 2000 includes a first substrate 2100 including a thin film transistor (TFT) and a pixel electrode, and a second substrate including color filter layers. 2200 may be formed in a bonded structure with the liquid crystal layer interposed therebetween.

In addition, the display panel 2000 includes a thin film transistor, a color filter, and a black matrix formed on the first substrate 2100, and the second substrate 2200 is bonded to the first substrate 2100 with a liquid crystal layer interposed therebetween. It may be a liquid crystal display panel having a color filter on transistor (COT) structure. That is, a thin film transistor may be formed on the first substrate 2100, a protective film may be formed on the thin film transistor, and a color filter layer may be formed on the protective film. In addition, a pixel electrode in contact with the thin film transistor is formed on the first substrate 2100. In this case, in order to improve the aperture ratio and simplify the mask process, the black matrix may be omitted, and the common electrode may be formed to serve as the black matrix.

In addition, when the display panel 2000 is a liquid crystal display panel, the display device may further include a backlight unit that provides light from the back of the display panel 2000.

Alternatively, when the display panel 2000 is an organic light emitting display panel, the display panel 2000 may include a self-light emitting device that does not require a separate light source. In the display panel 2000, a thin film transistor may be formed on the first substrate 2100, and an organic light emitting diode may be formed in contact with the thin film transistor. The organic light emitting diode may include an anode, a cathode, and an organic light emitting layer formed between the anode and the cathode. In addition, the organic light emitting device may further include a second substrate 2200 serving as an encapsulation substrate for encapsulation.

Although not shown in the drawings, a polarizer may be further disposed between the light path control member 1000 and the display panel 2000. The polarizing plate may be a linear polarizing plate or an external light reflection preventing polarizing plate. For example, when the display panel 2000 is a liquid crystal display panel, the polarizing plate may be a linear polarizing plate. In addition, when the display panel 2000 is an organic light emitting display panel, the polarizer may be an anti-reflection polarizer.

In addition, an additional functional layer 1300 such as an anti-reflection layer or antiglare may be further disposed on the light path control member 1000. In detail, the functional layer 1300 may be attached to one surface of the base substrate 100 of the light path control member. Although not shown in the drawing, the functional layer 1300 may be adhered to each other through the base substrate 100 and the adhesive layer of the light path control member. In addition, a release film that protects the functional layer may be further disposed on the functional layer 1300.

In addition, a touch panel may be further disposed between the display panel and the light path control member.

Although the light path control member is illustrated on the upper portion of the display panel in the drawings, the embodiment is not limited thereto, and the light control member is positioned at a position where light can be controlled, that is, the lower portion of the display panel or the display panel. It may be disposed at various positions, such as between the upper substrate and the lower substrate of the.

Referring to FIG. 17, the light path control member according to the embodiment may be applied to a vehicle.

Referring to FIG. 17, a display device to which the light path control member according to the embodiment is applied may be disposed in a vehicle.

For example, the display device according to the embodiment may express the information of the vehicle and the image confirming the movement route of the vehicle. The display device 3100 may be disposed between the driver's seat and the passenger seat of the vehicle.

In addition, the light path control member according to the embodiment may be applied to the instrument panel 3200 for displaying the speed of the vehicle, the engine, and a warning signal.

In addition, the light path control member according to the embodiment may be applied to the windshield (FG) or the left and right window glass (W) of the vehicle.

Features, structures, effects, and the like described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified with respect to other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be interpreted that the contents related to such a combination and modification are included in the scope of the present invention.

In addition, the above description has been made with reference to the embodiments, which are merely examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains may be exemplified above without departing from the essential characteristics of the present embodiments. It will be appreciated that various modifications and applications are possible. For example, each component specifically shown in the embodiments may be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

Claims (9)

Base substrate;
A resin layer disposed on the base substrate and including a plurality of intaglio portions and the plurality of embossed portions spaced apart from each other;
A plurality of pattern parts disposed in the plurality of intaglio parts and spaced apart from each other; And
It includes a pattern layer disposed on one surface or the other surface of the resin layer,
The pattern layer includes a plurality of patterns,
The optical path control member whose diameter of each pattern is 15 micrometers or less. The method of claim 1,
And the diameter of each pattern is 8 탆 to 15 탆. The method of claim 1,
And the patterns comprise two or more patterns having different diameters. The method of claim 1,
The patterns are disposed at a distance of 2㎛ to 4㎛ spaced optical control member. The method of claim 1,
The substrate includes a pattern region in which a pattern is disposed and a non-pattern region in which the substrate is exposed,
The non-patterned region is 40% to 57% of the total area of the light path control member. The method of claim 1,
The pattern layer comprises a base material on the resin layer or the base substrate,
And the patterns are disposed on the substrate. The method of claim 1,
The patterns are disposed in direct contact with the resin layer. Display panel;
An optical path control member disposed on the display panel; And
A pattern layer disposed between the display panel and the light path control member;
The optical path control member,
A resin layer disposed on the display panel and including a plurality of intaglio parts spaced apart from each other and a plurality of embossed parts;
A plurality of pattern parts disposed in the plurality of intaglio parts and spaced apart from each other; And
A base base material disposed on the resin layer,
The pattern layer is disposed between the display panel and the resin layer,
The pattern layer includes a plurality of patterns,
The diameter of each pattern is 8 micrometers-15 micrometers. The method of claim 8,
The base substrate includes one surface adjacent to the resin layer and the other surface opposite to the one surface,
And a protective layer on the other surface of the base substrate.

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