JPH0614191Y2 - Liquid crystal display - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a liquid crystal panel element formed by enclosing a liquid crystal between two glass plates which are stacked on each other, and a rear side of a fixed frame body having a display window. The present invention relates to an improvement in a liquid crystal display device in which a light source diffuser equipped with a fluorescent lamp is mounted on the back surface side of the liquid crystal panel element.

[Conventional technology]

Recently, in a portable (laptop) word processor, computer, etc., a liquid crystal panel element is mounted on the back side of a fixed frame body having a display window, and further, a fluorescent lamp is attached on the back side of the liquid crystal panel element. There is used a liquid crystal display device of a type in which a light source diffuser having the above is arranged.

Then, as shown in FIG. 6 to FIG. 10, the conventional liquid crystal display device of this type is arranged in a fixed frame body 1 made of a metal plate in which a rectangular display window 1b is formed in the upper plate 1a. Circuit boards 2c, 2 in which liquid crystal is enclosed between two superposed glass plates 2a, 2b and driving electronic components are mounted around the liquid crystal.
A liquid crystal panel element 2 formed by joining d and 2e through film-shaped connectors 2f, 2g, and 2h is used to connect the upper surface of one glass plate 2a of the liquid crystal panel element 2 and the upper surface plate 1a of the fixed frame body 1 to each other. A cushioning material 3 such as silicon rubber is provided between the lower surface and between the upper surfaces of the respective circuit boards 2c, 2d, 2e and the lower surface of the upper surface plate 1a of the fixed frame 1.
a, 3b, 3c are sandwiched and inserted, then a fluorescent lamp 4b is attached to at least one side edge of the transparent plate 4a, and a light shielding plate 4c is stretched on the back surface of the transparent plate 4a. Between the light source diffuser 4 and the lower surface of each of the circuit boards 2c, 2d, 2e in the liquid crystal panel element 2 or the lower surface of the other glass plate 2b in the liquid crystal panel element 2, a cushioning member 5a such as silicon rubber,
5b and 5c are sandwiched between the back cover plate 6 and the light source diffuser 4 of the back cover plate 6, and cushioning materials 7a and 7b such as silicon rubber are sandwiched between the back cover plate 6 and the fixed portion. Frame 1
The liquid crystal panel element 2 is formed by bending inwardly a claw piece 1d integrally formed on the lower end of the peripheral wall plate 1c.
The light source diffuser 4 is fixed in the fixed frame body 1.

[Problems to be solved by the device]

However, in this conventional liquid crystal display device, the liquid crystal panel element 2 is disposed in the fixed frame body 1 by the upper surface of one glass plate 2 of the liquid crystal panel element 2 and the lower surface of the upper surface plate 1a of the fixed frame body 1. The cushioning material 3a is inserted between them. In other words, the upper surface of the one glass plate 2a of the liquid crystal panel element 2 has the fixed frame 1 as shown in FIGS. 9 and 10. The upper surface of the upper surface plate 1a in FIG. _{2 is} recessed by a height dimension (H ₂ ), and the entire height dimension (H) in this liquid crystal display device includes one glass of the liquid crystal panel element 2. Since the thickness dimension (H ₂ ) of the back cover plate 6 is added in addition to the depression height dimension (H ₁ ) from the upper surface of the plate 2a to the upper surface of the upper surface plate 1b, Increased overall height dimension (H) Rutotomoni weight becomes heavy, further, since using the Urafutaban 6, so the number of parts,
There is a problem that the manufacturing cost increases.

This invention makes it a technical subject to solve these problems.

[Means for Solving the Problems]

In order to achieve this technical problem, the present invention has a fixed frame body formed by punching a display window on the back surface side of which a liquid crystal is sealed between two glass plates that are superposed on each other and a driving electronic component is provided around the liquid crystal. A liquid crystal display device comprising: a liquid crystal panel element having a circuit board joined thereto; and a light source diffuser having a fluorescent plate mounted on at least one side edge of a transparent plate and a light-shielding plate stretched on the back surface of the transparent plate. The one glass plate in the liquid crystal panel element is made smaller than the display window in the fixed frame body, and the one glass plate is configured to fit in the display window, while the fixed frame body is formed. The claw pieces provided in the above are bent toward the back surface of the light source diffuser.

[Function and effect of device]

According to this structure, one glass plate of the liquid crystal panel element is fitted into the display window of the fixed frame body, and the upper surface of the one glass plate is aligned substantially flush with the surface of the fixed frame body. Therefore, it is possible to prevent the entire height dimension of the liquid crystal display device from being higher than the conventional one by the amount that one glass plate is recessed lower than the surface of the fixed frame body as in the conventional one. In addition, since the claw pieces of the fixed frame body are bent toward the back surface of the light source diffuser, the conventional back cover plate can be eliminated.

Therefore, according to the present invention, the overall height dimension of the liquid crystal display device can be significantly reduced, and since the conventional back cover plate can be eliminated, the number of parts can be reduced. The manufacturing cost can be reduced and a significant weight reduction can be achieved.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings (FIGS. 1 to 5).

In this drawing, reference numeral 11 indicates that a rectangular display window 11b having a width dimension W ₁ and a length dimension L ₁ is formed in the upper surface plate 11a, and a peripheral wall plate 11c is integrally formed around the entire periphery of the upper surface plate 11a. A fixed frame body made of metal plates connected to each other is shown, and a plurality of claw pieces 11d are provided at the lower end of the peripheral wall plate 11c.

Further, reference numeral 12 is a circuit board 12c, 12d, 1 in which liquid crystal is sealed between two glass plates 12a, 12b which are superposed on each other, and a driving electronic component is mounted around the liquid crystal.
2 shows a liquid crystal panel element formed by joining 2e via film-like connectors 12f, 12g, 12h.

Furthermore, reference numeral 14 is a transparent plate 14a made of acrylic resin or the like.
Shows a plate-shaped light source diffuser in which a fluorescent lamp 14b is mounted on at least one side edge of the above and a light shielding plate 14c is stretched on the back surface of the transparent plate 14a.

Then, the liquid crystal panel element 1 is provided in the fixed frame body 11.
2 is inserted between the liquid crystal panel element 12 and the lower surface of the upper surface plate 12a of the fixed frame body 12 through the cushioning materials 13a and 13b such as silicon rubber, one of the liquid crystal panel element 12 is inserted. The width dimension W ₂ and the length dimension L ₂ of the glass plate 12a are set so that the width dimension of the display window 11b of the fixed frame body 11 is slightly smaller than the width dimension W ₁ and the length dimension L _1. The glass plate 12a of the display window 1 on the top plate 12a.
2b and the cushioning member 13
a, 13b to the other glass plate 12b and circuit board 12
It is inserted between c, 12d and 12e and the lower surface of the upper surface plate 12a.

Then, in the fixed frame body 11, the light source diffuser 14
Was inserted with the cushioning materials 15a and 15b such as silicon rubber sandwiched between the light source diffuser 14 and the liquid crystal panel element 12, and then integrally formed on the lower end of the peripheral wall plate 11c of the fixed frame body 11. Each nail piece 11d is connected to the light source diffuser 14
The liquid crystal panel element 12 and the light source diffuser 14 are bent inward toward the lower surface of the fixed frame 1
Fix within 1.

According to this structure, the liquid crystal panel element 12 is provided with the cushioning material 13 on the back surface of the upper surface plate 11a of the fixed frame body 11.
One of the glass plates 12a in the liquid crystal panel element 12 is held elastically via a and 13b.
Is the display window 1 of the top plate 12a of the fixed frame body 11.
Since the upper surface of the one glass plate 12a can be fitted in 1b to be substantially flush with the upper surface of the upper plate 11a of the fixed frame body 11, as shown in FIGS. 4 and 5. The overall height dimension (H) of the liquid crystal display device is lower than that in the conventional case in which the upper surface of one glass plate 12 is recessed lower than the upper surface of the upper plate 11a of the fixed frame body 11. You can do it.

As the fluorescent lamp 14b in the light source diffuser 14, an aperture tube type fluorescent lamp 14b configured to emit light from a part of the circumference without emitting the light from the entire circumference is used. The fluorescent lamp 14b is connected to each of the circuit boards 12c, 12d, 1 in the liquid crystal panel element 12.
The height dimension (H) of the liquid crystal display device can be determined by disposing the fluorescent lamp 14a on the circuit boards 12c, 12d, 12e.
It can be made even lower than when it is arranged directly below.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention, FIG. 1 is an exploded perspective view, FIG. 2 is an enlarged sectional view taken along line II-II of FIG. 1, and FIG. 3 is FIG. III-III enlarged sectional view of FIG. 4, FIG. 4 is a sectional view in the assembled state of FIG. 2, FIG. 5 is a sectional view in the assembled state of FIG. 3, and FIGS. 6 to 10 show the conventional case. , Sixth
The figure is a perspective view in an exploded state, and FIG. 7 is VII-VII in FIG.
8 is an enlarged sectional view taken along line VIII-VIII of FIG. 6, FIG. 9 is a sectional view of the assembled state shown in FIG. 7, and FIG. 10 is a sectional view of the assembled state shown in FIG. . 11 ... Fixed frame body, 11a ... Top plate, 11b ... Display window, 11c ... Peripheral wall plate, 11d ... Claw piece, 12 ... Liquid crystal panel element, 12a, 12b ... Glass plate, 12c, 1
2d, 12e ... Circuit board, 12f, 12g, 12h ...
... Connector, 13a, 13b ... Buffer material, 14 ... Light source diffuser, 14a ... Transparent plate, 14b ... Fluorescent lamp, 14c
…… A light shield.

Claims (1)

[Scope of utility model registration request] 1. A liquid crystal panel in which a liquid crystal is enclosed between two glass plates which are superposed on each other on the back side of a fixed frame body having a display window formed therein, and a circuit board with a driving electronic component is bonded to the periphery thereof. A liquid crystal display device comprising: an element and a light source diffuser, in which a fluorescent lamp is mounted on at least one side edge of a transparent plate and a light-shielding plate is stretched on the back surface of the transparent plate, and which are mounted together. The glass plate of a size smaller than the display window in the fixed frame, one of the glass plate is configured to fit in the display window, while the nail piece provided in the fixed frame, A liquid crystal display device, which is bent toward the back surface of the light source diffuser.