JPH0575735U - Liquid crystal display - Google Patents

Abstract

(57) [Abstract] [Purpose] To suppress the dimension in the height direction from the substrate to the liquid crystal display panel, and arrange the integrated circuit and the light emitting element for the backlight under the liquid crystal display panel. [Structure] On a substrate 2 provided under the liquid crystal display panel 1, an integrated circuit 3 for driving the liquid crystal display panel and a light emitting element 4 for backlight are arranged. Integrated circuit 3 is black encapsulant 5
The black sealing material 5 and the light emitting element 4 for backlight are sealed with a transparent or semitransparent sealing material 7. The black sealing material 5 shields the integrated circuit 3 from light, and the sealing material 7 diffuses the light of the light emitting element 4 to illuminate the liquid crystal display panel 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mounting structure of a liquid crystal display device for external display, and particularly to a structure in which a dimension in a height direction is suppressed.

[0002]

[Prior Art]

 Recent cameras are equipped with a liquid crystal display device for externally displaying various shooting information and shooting operation procedures. FIG. 2 shows an example of a camera provided with a liquid crystal display device. A camera body 60 has a built-in flash opening / closing lid 63, a viewfinder section 64, a shutter button 65, a power switch 66, a self-timer button 67, An operation unit such as a focus lever 68 and an exposure correction / setting button 69 is provided. A liquid crystal display 62 is provided on the top cover 61 projecting in the center of the camera body 60. The number of shots, exposure mode, AF mode, self-timer setting, etc. can be checked during shooting. The information you want is displayed centrally.

The liquid crystal display device 2 is composed of a liquid crystal display panel, a light emitting element for a backlight, an integrated circuit for driving a liquid crystal display panel, a printed circuit board and the like, which are unitized and mounted inside the top cover 61. ing. Generally, an EL or a light emitting diode (LED) is used as a light emitting element for a backlight. When the light emitting diode is used, a transparent or transparent element is provided between the light emitting diode and the liquid crystal display panel. A semitransparent resin plate is placed to diffuse the light of the light emitting diode.

Further, by arranging the above-mentioned electric parts such as the integrated circuit under the liquid crystal display panel, the mounting area of the printed circuit board can be reduced. However, these integrated circuits and the resin plate for light diffusion are used. If they are arranged at the bottom of the liquid crystal display panel at the same time, there is a problem that the dimension in the height direction from the printed board to the liquid crystal display panel becomes large.

[0005]

SUMMARY OF THE INVENTION The present invention suppresses the dimension in the height direction from a substrate to a liquid crystal display panel in a liquid crystal display device, and arranges an integrated circuit and a light emitting element for a backlight under the liquid crystal display panel. The purpose is to reduce the mounting area of the board.

[0006]

[Means for Solving the Problems]

 A first means adopted by the present invention to solve the above problems is a liquid crystal display panel, a backlight light-emitting element arranged below the liquid crystal display panel, and an integrated circuit for driving the liquid crystal display panel. The light emitting element and the integrated circuit are sealed with a transparent or semitransparent sealing material. A second means of the present invention is characterized in that the integrated circuit is covered with a colored light-shielding sealing material.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIG. The liquid crystal display device of this embodiment includes a liquid crystal display panel 1 and a printed circuit board 2, and the liquid crystal display panel 1 has an upper end edge pressed by a holding frame 8 fixed to the print substrate 2. Further, the electrodes of the liquid crystal display panel 1 and the printed circuit board 2 are conducted by a connector 9 made of, for example, conductive rubber, and the other side portion of the liquid crystal display panel 1 in which the connector 9 is not disposed protrudes from the holding frame 8. It is supported by the claw portion 8a.

A liquid crystal display panel driving integrated circuit 3 and a plurality of light emitting diodes (LEDs) 4 and 4 are arranged on a printed circuit board 2 provided under the liquid crystal display panel 1. The black sealing material 5 is thinly potted on the integrated circuit 3 to shield the integrated circuit 3 from light. A transparent or semi-transparent sealing material 7 is potted so as to cover the black sealing material 5 and the light emitting diodes 4 and 4. The light of the light emitting diodes 4, 4 is diffused by the sealing material 7 to illuminate the liquid crystal display panel 1 from the rear surface direction and protect the integrated circuit 3 from moisture, shock and the like.

As the sealing material 7, a transparent or semi-transparent thermosetting adhesive resin material, an ultraviolet curing adhesive resin material, or the like is used, and the black sealing material 5 is formed by coloring these adhesive resin materials in black. Is used. Further, the layer thickness of the sealing material 7 is applied as thinly as possible within the range where an appropriate light diffusion effect is obtained for the purpose of reducing the dimension in the height direction.

According to the above-described embodiment, the light of the light emitting diodes 4 and 4 is diffused by the transparent or semitransparent sealing material 7 and illuminates the liquid crystal display panel 1. At this time, since the integrated circuit 3 is shielded from light by the black-colored sealing material 5, generation of noise due to light emission is prevented. The sealing material 5 is not limited to black as long as it can shield the light from the light source.

The above-described embodiment is an example of the present invention, and the configuration of the entire liquid crystal display device is not limited to that shown in the figure, and electric components and light emitting elements are arranged below the liquid crystal display panel. I wish I had it. Further, the liquid crystal display device of the present invention can be widely used not only as an external display device of a camera but also as an external display device of other imaging devices, audio equipment, communication equipment and the like.

[0012]

[Effect of the device]

 According to the present invention described above, it is possible to suppress the dimension in the height direction from the substrate of the liquid crystal display device to the liquid crystal display panel, and to arrange the electric components such as integrated circuits and the light emitting element for the backlight under the liquid crystal display panel. Therefore, the entire device can be downsized and the mounting area of the substrate can be reduced. Further, since the encapsulating material is only potted to the integrated circuit or the light emitting element, the assembling process can be reduced.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a liquid crystal display device according to the present invention.

FIG. 2 is a plan view of a camera body including a conventional liquid crystal display panel.

[Explanation of sign]

 1 Liquid Crystal Display Panel 2 Printed Circuit Board 3 Integrated Circuit 4 Light Emitting Element for Backlight 7 Transparent or Semitransparent Sealing Material 8 Liquid Crystal Display Panel Holding Frame 9 Connector

Claims (2)

[Scope of utility model registration request] 1. A liquid crystal display panel, a backlight light emitting element arranged below the liquid crystal display panel, and an integrated circuit for driving the liquid crystal display panel, wherein the light emitting element and the integrated circuit are transparent. Alternatively, a liquid crystal display device characterized by being sealed with a semitransparent sealing material. 2. The liquid crystal display device according to claim 1, wherein the integrated circuit is covered with a colored sealing material for light shielding.