JPH02149884A - Solid-state display device - Google Patents

Abstract

PURPOSE:To easily accomplish fine-pitch and the enlargement of an effective picture element area, etc., by guiding the emitted light of a laser diode through the group of optical fibers to a display unit. CONSTITUTION:The display unit 3 is constituted of a glass substrate 32 whose surface side 33 abuts on a mask 21 is polished so as to become a mirror finished surface if necessary and a light emitting layer 31 formed on the surface 33. The light emitting layer 31 is formed on the glass substrate 32 by prescribed pitches alpha and beta, and the light emitting bodies which emit light beams of red 31R, green 31G and blue 31B by being pumped by a laser beam, for example, Ge, Zn, Cd, Se, and Te, etc., are used as the light emitting layer 31. In this case, as to the display unit 3 where the light emitting layer 31 is formed, the light emitting layer 31 is positioned at the side of the mask board 21 and united with the mask board 21, and firmly fixed and integrated by epoxy adhesive or frit-sealed glass, etc. Then, by guiding the emitted light through the group of the optical fibers, the fine-pitch and the enlargement of the effective picture element area, etc., can be easily accomplished.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a solid-state display device that displays images and the like.

[Summary of the invention]

The present invention relates to a solid-state display device, and relates to a solid-state display device, in which light emitted from a laser diode array section is guided to a display screen via a group of optical fibers (thereby, the pixel pitch is made into a fine pitch, and an invalid pixel is divided into effective pixels for each pixel. This allows the area ratio to be reduced.

[Prior Art] Conventionally, there have been known solid-state display devices of this type in which a large number of LED elements are arranged in an XY matrix.

Reference: Japanese Patent Application Laid-Open No. 50-55218 [Problem to be Solved by the Invention] However, with this structure, in order to obtain the practically necessary brightness, the physical external dimensions of each element must be 5.5 mm. mm or more is required, and a regular color cathode ray tube (color CRT) is required.
Therefore, it is impossible to achieve the so-called fine pitch arrangement of 0.5 mm hits.

Furthermore, in the case of LED elements, it is necessary to use the light emitting diode element sealed in a container, and it is also necessary to incorporate a reflective mirror in order to improve the effective brightness. Also, the size of the container becomes large. Therefore, when such LED elements are arranged in an XY matrix, the area of the empty element formed by the space generated around the light emitting part that forms the effective picture element appears to be so large that it cannot be ignored, and it is difficult to feel However, the disadvantage is that the image projected by each picture element becomes disjointed.

The present invention aims to provide a solid-state display device that solves these conventional drawbacks, and in particular, to provide a display that can achieve high definition in a small to medium size area.

[Means to solve the problem]

The present invention provides a laser diode array section (1) arranged in the negative direction and a direction substantially orthogonal thereto, and an optical fiber group (2) composed of a plurality of optical fibers into which light emitted from the laser diodes of the array section is incident. ) and a display screen (3) into which the light emitted from the group of optical fibers enters.

[Effect]

According to this, by guiding light emission through a group of optical fibers, it is possible to easily achieve finer pitch, enlargement of effective picture element area, and the like.

〔Example〕

FIG. 1 shows an example of the entire display device according to the present invention, in which (1) is a laser diode unit, (2) is a group of optical fiber cables, and (3) is a display unit. Further, (11) is an input terminal for visual signals such as video.

Figure 2 shows an example of the configuration of the laser diode unit (1), where (12) is a housing case for the laser diode unit (1), and (14) is a plurality of laser diode elements (15m) x (15n). And XY? Laser diode array, in which the trix is formed (
13) is a processor/driver unit that forms a drive signal for the laser diode array (14) based on the signal from the terminal (11). Further, as shown in FIG. 3, an optical fiber (2 mm) in the optical fiber group (2) is coupled to the light emitting surface of each of the laser diode elements (15 mm) constituting the laser diode array (14), and the laser Laser light from a diode element is made incident thereon. (16) is the terminal (
11) is a through hole for protruding outside of the housing case (12).

In addition, in Fig. 2, the unit tl13) and the array (14
) is electrically connected, but a well-known technique can be applied for this connection, so it is omitted from the diagram. Further, for the same reason, the power supply and its supply method for (13) etc. are also omitted.

FIG. 4 shows the configuration of the display unit (3) and the joint portion between the optical fiber cable group (2) and the display unit (3). In this figure, each cable constituting the optical fiber cable group (2) has through holes (
(not shown) is inserted into each of the perforated holes of the mask plate (21) in which the mask plate (21) is formed. It is fixed to the mask plate with an adhesive layer (22). After that, the adhesive layer (22) on the mask plate (21)
) on the side of the display unit (3) is polished to a mirror surface if necessary, so that the end face of each cable of the optical fiber group (2) is exposed.

Note that the mask plate (21) and the step of forming the through holes thereon can be performed by applying the well-known manufacturing technology of a shadow mask plate used in color cathode ray tubes, so a description thereof will be omitted.

On the other hand, the display unit (3) has at least two masks (21).
It is composed of a glass substrate (32) whose surface (33) in contact with the surface (33) is polished to a mirror surface as required, and a light emitting layer (31) formed on the surface (33). The light emitter layer (31) is the fifth
As shown in the figure, a glass substrate (32
), and the luminescent layer (31) is bombed with laser light to produce a red (311)
? ).

A light emitter that emits green (31G) and blue (31B) light, such as Ge.

Zn, Cd, Se, Te, etc. are used.

In addition, each light emitting body (31R), (31G), (31B)
is the optical fiber cable group (2) on the mask plate (21) side
It is necessary to form the number of cables corresponding to the number of cables composing the cable group.For example, a light source is placed on the laser diode unit side of the cable group (2), and a mask plate (2) is formed.
Since step 1) can be carried out using a well-known method for forming a phosphor screen of a color cathode ray tube using a photographic technique using a mask, a detailed explanation will be omitted. Further, alignment means is provided between the mask plate (21) and the display unit (3) as required.

As a result, the display unit (3) on which the light emitter J3 (31) is formed is positioned and combined with the mask plate (21) with the light emitter layer (31) on the mask plate (21) side, and then glued with epoxy adhesive or are fixed and integrated with frit seal glass or the like.

Therefore, according to this device, by guiding the emitted light through a group of optical fibers, it is possible to easily achieve finer pitch, enlargement of the effective pixel area, and the like.

Furthermore, FIG. 4 shows another example of the present invention, in which the space between the laser diode unit (1) and the display unit (3) is narrowed, and the entire structure is flattened. Also, a mask plate (21') is installed on the laser diode unit 1) side of the optical fiber cable group (2).
) is easier to assemble. In this case, the mask plate (21') is substantially the same as the mask plate (21) except that the through hole pitch is matched to the laser diode pitch on the unit (1) side. It is of structure.

FIG. 5 shows another example of the present invention, in which a laser diode unit (1) is connected to a display unit (3).
) is arranged at a different position from the examples shown in FIGS.

FIG. 6 shows still another example according to the present invention, in which a multi-display system is configured using a plurality of display units, nine in this example. According to the display unit of the present invention, the display unit (3) The width of the non-display portion remaining around the area can be made extremely narrow relative to the area of the display portion, which is extremely preferable for this type of display. Note that in a display using a conventional CRT, the cross-sectional width of the envelope of the CRT is quite thick, and a support frame such as a shadow mask exists within the cross-sectional width, so it is impossible to make the width narrower.

Furthermore, in the above explanation, a case has been described in which a light emitter layer (31) is formed on a glass substrate serving as a display screen, but this uses a laser diode element that emits light outside of invisible light. If the laser diode is one that can emit light in the visible light range, for example red, green, and blue, the light emitter layer (31) is not necessary, and the light emitter layer (31) is used instead. Instead of forming the layer (31), it is desirable to roughen the surface into a fine particle shape to expand the visible range.

Furthermore, in the above description, the case where a single laser diode element is used as many as the number of pixels is explained, but the invention is not limited to this, and a unit in which a plurality of elements are made into a monolithic IC may be used in combination. In this case, for example, if the display is in color, it may be configured with three ICs divided into red, green, and blue.

〔Effect of the invention〕

As described above, according to the present invention, 1. Fine pitch display can be realized.

2. If the number of picture elements is the same, the screen can be made smaller than when the display section is directly constructed from display elements such as LED elements.

3. The effective pixel area on the screen can be made larger than when the display section is directly formed using display elements, making the display screen easier to see.

4. Since the display unit and laser diode unit are separated and connected by an optical fiber cable, there is a large degree of freedom in physical arrangement.

5. Since the light source is a laser diode, the light convergence is good and the matching with the optical fiber cable is good.

6. Compared to a CRT, the width of the area outside the screen can be made narrower, so when a multi-display system is configured, the so-called frame is less noticeable and the screen is easier to see.

You can obtain effects such as

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an example of the present invention, and FIGS. 2 to 8 are diagrams for explaining the same. (1) is a laser diode array section, (2) is an optical fiber group, and (3) is a display screen. Agent Hide Matsukuma, Toy/De-Pouf'le 1 and E Unit's talent NAI
Z) Figure 4 Acknowledgment Exit Figure 5 Reverun T-1 ``Unisho Racer Park I7-T'' Unito Structure Gate Figure 2 Huan Moe Exit Figure 3 Figure 6 Figure 7 A Ifri f1 structure 1 par 10 Fig. 8

Claims (1)

[Scope of Claims] A laser diode array section arranged in one direction and a direction substantially orthogonal thereto; an optical fiber group composed of a plurality of optical fibers into which light emitted from the laser diodes of the array section is incident; A solid-state display device consisting of a display screen into which light emitted by a group of optical fibers is incident.