JPH0481702A - Three primary colors lens array plate and its manufacture - Google Patents

Abstract

PURPOSE:To converge light without decreasing the transmissivity of the light nor causing a temperature rise by composing the three primary colors lens array plate of a mosaic primary color interference film filter 3 consisting of an optical multi-layered film formed on a glass base plate and many convex lenses adhered corresponding to filters of the three primary colors constituting the three primary colors interference film filter. CONSTITUTION:The primary color lens array plate 1 consists of the three primary colors interference film filter 3 where respective filters 3R, 3G, and 3B of the primary colors, i.e. red R, green G, and blue B on the glass base plate 2 and the convex lenses 4 formed of resin corresponding to the filters 3R, 3G, and 3B of the primary colors. Thus, the color filter is composed of the interference film filter 3. Consequently, the light can be converged on a specific position without decreasing the transmissivity of the light nor causing the temperature rise.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a three primary color lens array plate that increases the amount of light passing through each pixel of a liquid crystal panel, and a method for manufacturing the same.

(Conventional technology) Conventionally, this type of technology involves forming a lens corresponding to each pixel of a liquid crystal panel on a transparent substrate such as glass, and developing each of the three primary colors red, green, and blue in the lens forming part. It is known that a pigment or the like is mixed therein for the purpose of coloring (see, for example, Japanese Unexamined Patent Application Publication No. 1988-61-2 (1aDflO)).

(Problems to be Solved by the Invention) In the conventional technology, the coloring phenomenon caused by the pigment mixed in the lens forming part is that the desired color is developed due to the light absorption effect of the pigment itself. Therefore, there is a problem in that the light transmittance is low and the amount of light passing through each pixel of the liquid crystal panel is low.

Furthermore, since the transparent substrate on which the colored lenses are formed is bonded to the liquid crystal panel, the temperature increase of the pigment due to the absorption of light causes the temperature of the liquid crystal itself to rise, which hastens the deterioration of the function of the liquid crystal.

The present invention has been made in view of the above-mentioned problems of the conventional technology, and its purpose is to provide a three-primary color lens array plate that does not reduce the light transmittance and do not increase the temperature. The purpose is to provide a manufacturing method.

(Means for Solving the Problems) To solve the above problems, the present invention provides a mosaic-like three primary color interference film filter made of an optical multilayer film formed on a glass substrate, and each of the three primary color interference film filters constituting the three primary color interference film filters. It consists of a large number of convex lenses adhered to correspond to the primary color filters.

In addition, an interference film filter of three primary colors made of an optical multilayer film is formed in a mosaic shape on a glass substrate, and the surface of a resin liquid filled in a stand bar for forming a large number of convex lenses is applied to this interference film filter. After this resin liquid is cured by a curing method such as heating or ultraviolet irradiation depending on the material of the resin, the stand bar is removed.

(Function) Focuses light without reducing light transmittance or increasing temperature.

In addition, we first formed an interference film filter on a glass substrate,
Since a convex lens is then formed using a transparent resin on the interference film filter, there is no need to expose the transparent resin to the high temperatures during manufacture of the interference film filter.

(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a cross-sectional view of a three primary color lens array plate according to the present invention,
FIG. 2 is an explanatory diagram showing a method of manufacturing a three primary color lens array plate according to the present invention in a cross-sectional view.

As shown in FIG. 1, the three primary color lens array plate 1 has three primary colors red (R), green (G), and blue (B) on a glass substrate 2.
A three-primary color interference film filter 3 in which filters 3R, 3G, and 3B are formed in a mosaic shape, and filters 3R, 3G of each primary color.
, 3B, and a convex lens 4 made of resin and bonded in correspondence with each other.

By forming the color filter with the interference film filter 3 in this manner, light can be focused at a predetermined position without reducing the light transmittance and without increasing the temperature.

As shown in FIG. 2, the method for manufacturing the three primary color lens eye plate 1 is as follows: First, a resist film 10 with a predetermined mosaic pattern is provided on the glass substrate 2 using photolithography technology (see A in the same figure). ). The glass substrate 2 on which the resist film 10 is disposed is placed in a vacuum deposition machine (not shown), and a red (R) interference film filter 3R is first deposited (B in the same figure).
. Then, when the resist film 10 on which the red (R) interference film filter 3R is vapor-deposited is removed by a so-called lift-off method, only the red (R) interference film filter 3R is vapor-deposited on the glass substrate 2 (see FIG. C).

Thereafter, through similar steps, a green (G) interference film filter 3G and a blue (B) interference film filter 3B are deposited at predetermined positions on the glass substrate 2 (D to G in the figure).

Next, a mold release agent is applied to the recesses 11 of the aluminum stand bar 12 in which a large number of circular recesses 11 are formed as shown in FIG. A mosaic-shaped interference film filter 3 of three primary colors is formed with a recess 11 and an interference film filter 3R of each color.
3G and 3B are applied in correspondence (FIG. 2 H, I), and when the stamper 12 is removed after heating and curing, the resin convex lens 4 is adhered onto the interference film filter 3, forming the three primary color lens array plate 1. (Figure J).

FIG. 4 shows another embodiment of the standber, in which the standber 14
A large number of parallel semi-cylindrical grooves 15 are formed. After applying a release agent to these grooves 15, a transparent resin liquid 13 is filled, and the grooves 15 and interference film filters 3 of each color are connected in the same manner as in FIG. 2I.
The three primary color lens array plate 1 is formed by applying R, 3G, and 3B in correspondence to each other, heating and hardening the semi-cylindrical convex lenses arranged in parallel, and bonding them onto the interference film filter 3.

When the three primary color lens array plate 1 configured as described above is attached to a liquid crystal panel (not shown) to configure a liquid crystal display device,
The transmittance of each of the three primary colors corresponding to each pixel of the liquid crystal panel is improved, the amount of light passing through each pixel is increased by each convex lens 4, and furthermore, the temperature of the liquid crystal does not increase.

(Effects of the Invention) As explained above, according to the present invention, light can be focused without reducing the light transmittance and without increasing the temperature.

Furthermore, since the convex lens made of resin is not exposed to high temperatures during manufacture of the interference film filter, the optical characteristics of the convex lens are not deteriorated.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a three primary color lens array plate according to the present invention,
FIG. 2 is an explanatory diagram showing a method of manufacturing a three primary color lens array plate according to the present invention in cross-sectional view, FIG. 3 is a perspective view of a standber, and FIG. 4 is a perspective view of another embodiment of the standber. 1... Three primary color lens array plate, 2... Glass substrate,
3...3 primary color interference film filter, 4...convex lens, 1
2.14...Stamba, 13...Resin liquid. (B) (C) (D) (E) Figure A, 3R 〈 ) (G) (J)

Claims (2)

[Claims] (1) Consisting of a mosaic-shaped three-primary color interference film filter made of an optical multilayer film formed on a glass substrate, and a large number of convex lenses bonded to each primary color filter making up the three-primary color interference film filter. A three-primary color lens array plate featuring the following. (2) An interference film filter of three primary colors made of an optical multilayer film is formed in a mosaic shape on a glass substrate, and the surface of the resin liquid filled in a stamper for molding a large number of convex lenses is applied to this interference film filter. . A method for manufacturing a three primary color lens array plate, comprising removing the stamper after the resin liquid is cured.