KR950006506A - Microlens array sheet for liquid crystal display, mounting method thereof and liquid crystal display using the same - Google Patents

Abstract

The present invention relates to a microlens array sheet for a liquid crystal display comprising a first material layer (1) and a second material layer (2) having a refractive index smaller than that of the first material layer. A plurality of micro unit lenses 6 are formed by providing concave and / or block surface shapes at the interface 3 between the first and second material layers. When the light incident on the sheet 52 from the normal direction of the second material layer 2 exits from the surface of the first material layer 1, the refractive angle is 30 with respect to the surface normal direction of the first material layer 1. That is above. When such a microlens array sheet 52 is mounted on the surface of the liquid crystal cell 51 of the liquid crystal display, an enlargement effect of the viewing angle can be obtained.

Selectivity: 11th

Description

Microlens array sheet for liquid crystal display, mounting method thereof and liquid crystal display using the same

Since this is an open matter, no full text was included.

1 is an enlarged schematic plan view of a portion of a microlens array sheet according to an example of the first embodiment of the present invention;

FIG. 2 is a side view of the microlens array sheet of FIG. 1 as seen from arrow II. FIG.

Claims (15)

The first material layer 1 and the second material layer 2 having a refractive index smaller than that of the first material layer are located between two parallel planes 4 and 5, and the first material layer 1 and the first material layer There is a microlens array sheet in which a plurality of micro-unit lenses 6 formed by providing concave and / or convex surface shapes at the interface 3 of the two material layers 2 are arranged on a surface, and the interface having the uneven surface. The point on the interface 3 where the smaller angle between the tangent of the point on (3) and the intersection of one of the surfaces of the plane is called "θ" and the "θ" is the maximum value "θmax". In this regard, after the light incident on the microlens array sheet 52 from the surface normal direction of the second material layer 2 and reaching point A passes through the first material layer 1, The liquid crystal display, characterized in that the angle of refraction when emitted from the surface into the atmosphere is at least 30 degrees at an angle with respect to the surface normal direction on the side of the first material layer 1. Microlens array sheet. The cross-sectional shape of claim 1, wherein the micro-unit lens 6 is a convex lens, and the microlens array sheet 52 has a cross-sectional shape that gradually narrows from the bottom surface side of the micro-unit lens 6 to the convex surface side of the micro-unit lens. A light blocking means 12 having visible light absorbing ability, between the light blocking means 12 and adjacent light blocking means 12 of the convex surface of the convex lens formed on the first material layer 1, or light blocking means. The microlens array sheet located at the position which protruded from the vertex 22 of (12). The microlens array sheet according to claim 1 or 2, wherein at least the vertex portion (22) of the convex surface of the first material layer (1) in the microunit lens (6) is formed of an adhesive or adhesive resin. The first material layer 1 and the second material layer 2 having a refractive index smaller than that of the first material layer are located between two parallel planes 4 and 5, and the first material layer 1 and the first material layer Microlenses 6 including a plurality of micro-unit lenses 6 formed by providing concave and / or convex surface shapes at the interface 3 of the two material layers 2 on the surface and including light blocking means 12. ) Has a cross-sectional visible light absorbing ability gradually narrowing from the bottom side to the convex surface side of the micro unit lens, and the convex surface of the convex lens formed on the first material layer 1 is adjacent to the light blocking means 12. A microlens array sheet for a liquid crystal display, characterized in that it is located between the blocking means (12) or protruding from the vertex (22) of the light blocking means (12). The microlens array sheet according to claim 4, wherein at least the vertex portion (22) of the convex surface of the first material layer (1) in the micro-unit lens (6) is formed of an adhesive or adhesive resin. The first material layer 1 and the second material layer 2 having a refractive index smaller than that of the first material layer are located between two parallel planes 4 and 5, and the first material layer 1 and the first material layer There is a microlens array sheet 52 in which a plurality of microunit lenses 6 formed by providing a concave and / or convex surface shape at the interface 3 of the two material layers 2 are arranged on a surface. (6) A microlens array sheet for liquid crystal display comprising the step of bringing the apex of the convex surface of the first material layer (1) into close contact with the surface of the liquid crystal cell (51). The first material layer 1 and the second material layer 2 having a refractive index smaller than that of the first material layer are located between two parallel planes 4 and 5, and the first material layer 1 and the first material layer The liquid crystal cell 51 includes a microlens array sheet 52 in which a plurality of micro-unit lenses 6 formed by providing concave and / or convex surface shapes at the interface 3 of the two material layers 2 are arranged on a surface thereof. And a step of contacting the apex of the convex surface of the first material layer 1 of the micro unit lens 6 to the surface of the liquid crystal cell 51. How to install. 8. The microlens array sheet according to claim 7, wherein in the microlens array sheet, a smaller angle of the two angles caused by the intersection of the contact surface of the point on the interface 3 with the concave-convex surface and the surface of the plane is "?" When point A on the interface 3 that makes "θ" the maximum value "θmax" is point A, the point A is reached after entering the microlens array sheet 52 from the surface normal direction of the second material layer 2. A method in which the angle of refraction when one light beam passes through the first material layer (1) and exits the atmosphere from the surface on the first material layer side is 30 degrees or more at an angle with respect to the surface normal direction on the first material layer (1) side. 8. The micro unit array lens (6) according to claim 7, wherein the micro unit lens (6) is a convex lens, and the microlens array sheet (52) has a cross-sectional shape in which the width gradually narrows from the bottom surface side of the micro unit lens (6) to the convex surface side of the micro unit lens. A light blocking means 12 having visible light absorbing ability, between the light blocking means 12 and adjacent light blocking means 12 of the convex surface of the convex lens formed on the first material layer 1, or light blocking means. The position protruding from the vertex (22) of (12). The first material layer 1 and the second material layer 2 having a refractive index smaller than that of the first material layer are located between two parallel planes 4 and 5, and the first material layer 1 and the first material layer There is a microlens array sheet in which a plurality of micro-unit lenses 6 formed by providing concave and / or convex surface shapes at the interface 3 of the two material layers 2 are arranged on a surface, and the interface having the uneven surface. The point on the interface 3 where the smaller angle between the tangent of the point on (3) and the intersection of one of the surfaces of the plane is called "θ" and the "θ" is the maximum value "θmax". In this regard, after the light incident on the microlens array sheet 52 from the surface normal direction of the second material layer 2 and reaching point A passes through the first material layer 1, the first material layer side The angle of refraction at the time of exiting from the surface of the film to the atmosphere is at least 30 degrees with respect to the surface normal direction on the side of the first material layer 1, and the first material layer 1 is on the observation surface side. The second material layer (2) is a liquid crystal display characterized in that fitted to the microlens array sheet 52 to be directed toward the liquid crystal cell 51 on the observation side of the liquid crystal cell 51. The liquid crystal display according to claim 10, wherein said liquid crystal display is a transmissive liquid crystal display having a back light source, wherein at least 80% of the light rays of the back light source are emitted within an effective time range of the liquid crystal cell (51). The first material layer 1 and the second material layer 2 having a refractive index smaller than that of the first material layer are located between two parallel planes 4 and 5, and the first material layer 1 and the first material layer A microlens array sheet comprising a plurality of micro-unit lenses 6 formed by providing concave and / or convex surface shapes at the interface 3 of the two material layers 2 on the surface and including light blocking means 12. (52), the micro-unit lens (6) is a convex lens, and the light blocking means (12) is a visible light having a cross-sectional shape that becomes narrower gradually from the bottom surface side of the micro-unit lens (6) to the convex surface side of the micro-unit lens. Absorbing, the convex surface of the convex lens formed on the first material layer 1 protrudes between the light blocking means 12 and the adjacent light blocking means 12 or from the apex 22 of the light blocking means 12; Located at a position, the first material layer 1 is directed to the viewing surface side, the second material layer 2 is directed to the liquid crystal cell 51 side microlens array A sheet (52) is mounted on the viewing surface of the liquid crystal cell (51). 13. The liquid crystal display according to claim 12, wherein the liquid crystal display is a transmissive liquid crystal display having a back light source, wherein at least 80% of the light rays of the back light source are emitted within an effective time range of the liquid crystal cell (51). The first material layer 1 and the second material layer 2 having a refractive index smaller than that of the first material layer are located between two parallel planes 4 and 5, and the first material layer 1 and the first material layer There is a microlens array sheet 52 in which a plurality of microunit lenses 6 formed by providing a concave and / or convex surface shape at the interface 3 of the two material layers 2 are arranged on a surface. At least a vertex portion 22 of the convex surface of the first fusing layer 1 in (6) is formed of an adhesive or adhesive resin, and the first material layer 1 is on the observation surface side, and the second material layer 2 ) Mounts the microlens array sheet 52 on the viewing surface of the liquid crystal cell 51 so as to be directed toward the liquid crystal cell 51 side. 15. The liquid crystal display according to claim 14, wherein said liquid crystal display is a transmissive liquid crystal display having a back light source, wherein at least 80% of the light rays of the back light source are emitted within an effective time range of the liquid crystal cell (51). ※ Note: The disclosure is based on the initial application.