JPH0358018A - Color display device - Google Patents

Abstract

PURPOSE:To simplify the constitution of a liquid crystal cell and to obtain a bright display image by fixing one end of an optical fiber to a liquid crystal shutter which is provided in front of a liquid crystal cell and has primary color filters and forming a display part at the other end. CONSTITUTION:The liquid crystal shutters 3a-3c constituted by arraying liquid crystal shutters 5 where the color filters 4a-4c of the primary colors, i.e. red, green, and blue are mounted and the quantities of transmitted light are controlled independently are provided, and a white light source 1 is arranged behind the cells. One end of an optical fiber 7 is fixed at the position on the liquid crystal cell front surface corresponding to each liquid crystal shutter 5 and a display art 8 is formed at the other end side of each optical fiber 7. Then the respective liquid crystal shutters 5 are controlled to display a desired image on the display part 8. Therefore, the liquid crystal cells 3a-3d do not need constitute t image, so the structure is simplified and the shutter opening area is increased to obtain the bright display image.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a color display device that combines a liquid crystal shutter and an optical fiber.

(Prior Art) Conventionally, in a display device using a liquid crystal cell, a plurality of liquid crystal shutters are provided in the liquid crystal cell in the form of dots, and each liquid crystal shutter is driven according to an image signal to display a desired image. It is known what has been done. Here, the arrangement of each liquid crystal shutter of the liquid crystal cell is the same arrangement as the display dots of the display section, so that an image is formed on the liquid crystal cell. It is also possible to enlarge the displayed image using an optical fiber or the like.

[Xi Problem to be Solved by the Invention] Conventional color display devices using liquid crystal cells are configured as described above, and since it is necessary to configure images on the liquid crystal cells, the structure of the liquid crystal cells becomes complicated. Furthermore, since the aperture area of the liquid crystal shutter cannot be made large, there is a problem that a bright display image cannot be obtained.

The present invention has been made to solve these problems, and aims to provide a color display device that can simplify the structure of a liquid crystal cell and provide a bright display image.

(Means for Solving the Problems) A color display device of the present invention is configured as follows.

a. A liquid crystal cell is provided in which a plurality of liquid crystal shutters are arranged with color filters attached thereto and the amount of transmitted light is independently controlled, and a light source that emits light including light at the wavelength transmitted by the color filter is arranged behind the liquid crystal cell. At the same time, one end of an optical fiber is fixed at a position corresponding to each liquid crystal shutter on the front surface of the liquid crystal cell, a display section is formed on the other end side of each optical fiber, and a display is displayed by controlling each liquid crystal shutter of the liquid crystal cell. The desired image is now displayed in the section.

b. In the color display device of item a above, each of the liquid crystal cells is red. It consists of three types of cells equipped with color filters for the three primary colors of green and blue, and a set of three optical fibers from each cell constitutes each dot on the display section, allowing full-color display.

C. In the color display device of a or b above, a strongly inductive liquid crystal was used in the liquid crystal cell.

(Function) In the color display device of the present invention, one end of each optical fiber is fixed at a position corresponding to each liquid crystal shutter on the front surface of the liquid crystal cell, and a display portion is formed at the other end of each optical fiber. , there is no need to form an image on a liquid crystal cell, and the aperture area of the liquid crystal shutter can be increased.

(Embodiment) FIG. 1 is a block diagram showing the main parts of a color display device according to an embodiment of the present invention. In the figure, 1 is a white light source housed in a lamp house 2, and three types of liquid crystal cells 3a, 3
It is located behind b and 3c. That is, these liquid crystal cells 3m, 3b, and 3c are R (red) and G (
color filters 4a, 4b of three primary colors: green), B (blue),
A plurality of liquid crystal shutters 5 are arranged, each of which is equipped with a 4C and whose amount of transmitted light is independently controlled. One end of a plurality of optical fibers 7 attached to a fiber assembly 6 is fixed at a position corresponding to each liquid crystal shutter 5 on the front surface of these liquid crystal cells 3a, 3b, and 3C, and the other end of each optical fiber 7 Fiber display [58
is formed. This fiber display section 8 consists of a large number of display dots 9, and each display dot 9 corresponds to each liquid crystal cell 3a,
The three optical fibers 7 from 3b and 3c are constructed as a set, and each display dot 9 has R, G,
The end faces 7a of the three optical fibers 7 that guide the H light are fixed. Note that the light emitted from the light #1 includes light of wavelengths transmitted by each of the color filters 4a, 4b, and 4c.

FIG. 3 shows each liquid crystal cell 3a. 3b. 3c shows the configuration. Although each liquid crystal shutter 5 is arranged in a dot shape, this arrangement does not necessarily have to be the same as the arrangement of display dots 9 on the display section 8. By controlling each liquid crystal shutter 5 via the driving ICIO, a desired full-color image is displayed in dots on the display section 8.

Moreover, FIG. 4 shows the detailed structure of each liquid crystal shutter 5. This liquid crystal shutter 5 has a structure in which a ferroelectric liquid crystal 5b is sealed in two glass substrates Sa, and each shutter has a transparent electrode 5C and R, G. B color filter 4 is provided. Further, a polarizing plate 5d is arranged on the outside of the glass substrate 5a, and a transparent electrode 5C
An alignment film 5e is formed inside.

Next, the operation will be explained.

When the light emitted from the white light source 1 passes through each liquid crystal shutter 5, only light of a specific wavelength is transmitted by each color filter 4 (and at the same time, the light amount is determined by the transmittance of the liquid crystal shutter 5). The controlled R, G, and B lights are transmitted through the optical fiber 7 to the display section 8.
are guided to each display dot 9, where they are mixed to form an optical image. At that time, each of the liquid crystal shutters 5 is controlled from an external control circuit via a driving ICIO, and the control signal (image signal) from the control circuit is a video signal or an output signal from a microcomputer, etc. depending on the application. selected. In addition, by increasing the spacing between the display dots 9,
Enlarged images can be easily obtained.

Here, since there is no need to form an image on the liquid crystal cells 3a, 3b, and 3c, the opening area of the liquid crystal shutter 5 can be increased, and a bright display image can be obtained.
In addition, since the liquid crystal cellulose shares the image signal of one color,
Liquid crystal cells 3a, 3b. The structure of the 3C can be simplified, and even if restrictions arise due to the terminal arrangement of the driving 1cIO, etc., it can be dealt with by selecting the arrangement of the liquid crystal shutter 5. Furthermore, by selecting the white light source 1 with high luminous intensity, a high-brightness display screen can be obtained, and the liquid crystal cells 3a, 3b
, 3c can be combined to obtain a seamless large screen display.

In addition, in the above embodiment, the ferroelectric liquid crystal cell 5b, which has a fast response speed, is used as the liquid crystal cells 3a, 3b, and 3C.
Since the liquid crystal shutter 5 can be opened and closed at high speed and the amount of transmitted light can be changed using a gradation signal, a high-quality image can be obtained when applied to a television display.

(Effects of the Invention) As described above, according to the present invention, one end of each optical fiber is fixed at a position corresponding to each liquid crystal shutter on the front surface of a liquid crystal cell, and a display section is formed at the other end of each optical fiber. This eliminates the need to construct images on the liquid crystal cell, which simplifies the structure of the liquid crystal cell, and allows for a larger aperture area for the liquid crystal shutter, resulting in a brighter display image. effective.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a front view of the display unit shown in Fig. 1 seen from the front, Fig. 3 is a block diagram of the liquid crystal cell shown in Fig. 1, and Fig. 4. 3 is a detailed configuration diagram of the liquid crystal shutter shown in FIGS. 1 and 3. FIG. 1-One white light source 2-One lamp house 3a, 3b. 3c・1・1 Liquid crystal cell 4a, 4b, 4c−1 Color filter 5−1 Liquid crystal shutter 5b−・1 Ferroelectric liquid crystal 6・11 Fiber assembly? ------ Optical fibers 8 and 11 Fiber display section 9 --- Display dots 10 --- Drive IC 11 --- Connector

Claims (3)

[Claims] (1) A light source that is equipped with a liquid crystal cell in which a plurality of liquid crystal shutters are arranged, each of which has a color filter attached thereto and whose amount of transmitted light is independently controlled, and which emits light containing the wavelength of light transmitted by the color filter behind the liquid crystal cell. At the same time, one end of an optical fiber is fixed at a position corresponding to each liquid crystal shutter on the front surface of the liquid crystal cell, a display part is formed on the other end side of each optical fiber, and a display part is formed on the other end side of each optical fiber, A color display device characterized by displaying a desired image on a display section under control. (2) The liquid crystal cell is composed of three types of cells each equipped with a color filter of the three primary colors of red, green, and blue, and each dot of the display section is constituted by a set of three optical fibers from each cell, 2. The color display device according to claim 1, wherein the color display device performs full color display. (3) The color display device according to claim 1 or 2, wherein a strongly inductive liquid crystal is used for the liquid crystal cell.