JPH1114971A - Film liquid crystal attaching structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate fixing/removing of a film liquid crystal from a base plate by providing the base plate with a curved surface for placing the film liquid crystal and an engaging part for temperarily fixing the flexible film liquid crystal. SOLUTION: A base plate 5, a film liquid crystal 3 and a reflection plate 4 are arranged to be aligned in the same direction, the side face of the base plate 5 and the side faces of the film liquid crystal 3 and the reflection plate 4 are connected together in an insertive form, the base plate 5 side is bent and deformed along a curve surface, and the projecting parts (a) and (b) of the film liquid crystal 3 and the reflection plate 4 are inserted into the inserting port (c) of the other side face and then temporarily fixed. In other words, the film liquid crystal 3 and the reflection plate 4 are bent along the curve shape and temporarily fixed on the base plate 5 fixed on a substrate 7, a gasket 2 is inserted into a very small gap between a cover plate 1 and the film liquid crystal 3 and, by pressing the film liquid crystal 3, the substrate 7 and a front case 6 are firmly fixed to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for displaying a curved surface on a display section of a timepiece, a calculator, an OA device, a home electric appliance / AV device, a portable telephone or the like by using a film liquid crystal.

[0002]

2. Description of the Related Art FIG. 4 is an exploded perspective view showing an example of a conventional film liquid crystal curved surface mounting structure. Film LCD 13
Is a bendable liquid crystal display panel having a transparent electrode, liquid crystal, etc. sandwiched between upper and lower film substrates. The method of attaching the film liquid crystal 13 to the display section is performed by using an adhesive tape or the like on the curved surface side 12a of the base plate 12. The mounting was performed by using an adhesive 11 or the like.

[0003]

However, in a method of attaching the joint surface side to a curved surface by using an adhesive tape or an adhesive as in the above-mentioned conventional adhesive-type film liquid crystal, the attachment is unreliable. In addition to this, the tensile stress is applied to the film material via the adhesive to create gaps between the upper and lower layers, and unevenness due to the difference in the amount of adhesive in some places affects the film substrate, making it impossible to display a flat display. There is also a problem that when only the film liquid crystal breaks down for some reason, repair work is difficult due to the adhesive fixation.

[0004]

In order to solve the above-mentioned problems, the present invention provides a curved surface on which a film liquid crystal is placed on a base plate, and an engaging portion for temporarily fixing the film liquid crystal curved along the curved surface. Thus, the film liquid crystal is placed so as to conform to the curved shape of the base plate, and is positioned and held at the engagement portion.

[0005]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of a main part of an embodiment of the present invention applied to a mobile phone, 1 is a cover plate, 2 is a packing, 3 is a film liquid crystal, 4 is a reflection plate, 5 is a base plate, 6 is a front case, 7 is a board | substrate, 8 is a flexible printed circuit board.

Next, each component shown above will be described. The cover plate 1 has a wider display surface up to the side surface of the front case than the cover plate of a conventional mobile phone. This is because the display range is extended to the side to make the display screen a curved surface display. The cover plate 1 is directly subjected to a polarization process. This is because when a film-shaped polarizing plate is stuck via an adhesive or the like, a tensile stress is applied and the curvature changes. Also, the shape of the back side has a curved shape like the film liquid crystal 3 so as to keep the distance between the curved film liquid crystal 3 surface and the surface of the film liquid crystal 3 equidistant in order to eliminate the curvature gap with the liquid crystal portion such as the film liquid crystal 3. It has been processed. As a result, in the display of the liquid crystal unit, it is possible to provide a display in which the screen has no shadow and is raised. The packing 2 is formed into a shape conforming to both curved surfaces so that light does not enter the minute space between the cover plate 1 and the film liquid crystal 3 which have been directly subjected to polarization processing. The film liquid crystal 3 can be freely deformed, and has projections a on both right and left sides for fixing. Like the film liquid crystal 3, the reflection plate 4 can be freely deformed, and has projections b on both left and right sides for fixing. The base plate 5 is
It has a curved surface as a basis for mounting the film liquid crystal in a curved manner, and has insertion ports c for inserting the projections a and b provided on the film liquid crystal 3 and the reflection plate 4 on both left and right sides. Section.

In this embodiment, the side surface of the base plate 5 and the film liquid crystal corresponding thereto are arranged in such a manner that the base plate 5, the film liquid crystal 3 and the reflection plate 4 are arranged in the same direction as shown in FIG. 3 and the side surface of the reflection plate 4 are connected in a plug-in manner, and are bent from the side of the base plate 5 along the curved surface, so that the film liquid crystal 3 and the reflection plate are inserted into the insertion port c on the other side surface of the base plate 5. 4 are inserted.
Therefore, by utilizing the bending stress due to the bending deformation of the film liquid crystal 3 and preventing the film liquid crystal 3 from being displaced by the insertion type, the film liquid crystal 3 is positioned and temporarily fixed.

The above-described method of mounting the components to the portable telephone is performed by fixing the base plate 5 on the substrate 7 and bending the film liquid crystal 3 and the reflecting plate 4 on the base plate 5 so as to conform to the curved shape of the base plate 5. The packing 2 is temporarily fixed by a plug-in type, and the packing 2 is sandwiched without any gap so that light does not enter the minute space between the cover plate 1 and the film liquid crystal 3 which have been directly subjected to polarization treatment, and the film liquid crystal 3 is pressed down. The substrate 7 and the front case 6 are brought into close contact with each other.

FIG. 3 is an enlarged view of a main part showing the relationship between the flexible printed circuit board 8 (hereinafter referred to as FPC board) and the film liquid crystal 3. When the film liquid crystal 3 is curved, a similar pressure is applied to the FPC 8 and the terminal 9 at the same time. Therefore, the slit 10 is provided in the FPC board 8 to avoid the pressure. The curvature of the terminal 9 is suppressed by the slit 10, and the terminal 9 and the terminal 7 a on the substrate 7 are formed.
Can be reliably connected.

In the above embodiments, the reflection plate and the film liquid crystal have been described as being different from each other. However, the reflection plate may have the following embodiments.

(1) A reflector in which a reflection plate is incorporated and integrated on the back side of a film liquid crystal.

(2) A reflector in which a reflection plate is attached to the back side of a transparent base plate.

(3) The base plate has been subjected to a surface treatment or the like so that the base plate itself also functions as a reflector. In this case, a reflector as a single component is not required.

A film liquid crystal 3 and a base plate 5
The engagement with the above is not limited to the above-described embodiment, and other opposite edges of the film liquid crystal 3 may be engaged, and the engagement may be performed by a slide method or the like other than the insertion method.

[0016]

As described above, according to the present invention, since the film liquid crystal is inserted and held on the base plate, the film liquid crystal can be securely fixed to the base plate with a simple structure. In addition, when the film liquid crystal portion breaks down for some reason and is repaired or replaced, the film liquid crystal portion can be easily removed.

Further, the number of parts is reduced, and the substrate and the front case can be closely attached, so that the thickness can be reduced.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a main part of a mobile phone according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG. 1 showing a mounting structure of a film liquid crystal.

FIG. 3 is an enlarged view of a main part showing a relationship between a flexible printed circuit board and a film liquid crystal.

FIG. 4 is an exploded perspective view showing a conventional film liquid crystal mounting structure.

[Explanation of symbols]

1: cover plate, 2: packing, 3: film liquid crystal, 4: reflective plate, 5: base plate, 6: front case, 7: substrate, 7a: terminal, 8: FPC substrate, 9: terminal, 10: slit, 11 : Adhesive, 12: base plate, 12a: base plate surface side, 13: film liquid crystal.

Claims (1)

[Claims] 1. A mounting structure of a film liquid crystal for supporting and fixing a film liquid crystal on a base plate, wherein: a curved surface for mounting the film liquid crystal on the base plate;
By providing an engaging portion for temporarily fixing the film liquid crystal that curves along the curved surface, the film liquid crystal is placed according to the curved shape of the base plate and positioned and held on the engaging portion. A liquid crystal film mounting structure characterized by the following.