JPS6212303Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a liquid crystal panel in a small electronic device such as an electronic wristwatch.

Recently, electronic wristwatches that digitally display the time on a liquid crystal panel using micro-sized batteries such as silver oxide batteries have been widely used. However, in such conventional electronic wristwatches, a fitting hole is formed in the frame made of synthetic resin, etc., and the liquid crystal panel is fitted into the fitting hole. When obtaining the liquid crystal panel, the component body of the liquid crystal panel is cut to a predetermined size, so variations in the manufacturing process of the liquid crystal panel cannot be avoided, and it is difficult to install the liquid crystal panel into the fitting hole of the frame without play. . If the liquid crystal panel shakes inside the fitting hole of the frame, the terminals of the liquid crystal panel and the terminals of the board may become misaligned, or the interconnector that electrically connects the two terminals and each of these terminals may become misaligned. This results in a sliding phenomenon during the process, resulting in unstable electrical connections and inconvenience in viewing the display due to displacement of the liquid crystal panel, resulting in a lack of reliability.

For this reason, conventionally, as shown in FIGS. 1 to 3,
A fitting hole 4 into which the liquid crystal panel 1 is fitted is provided in the upper part of a frame 3 made of synthetic resin or the like to which the liquid crystal panel 1, circuit board 2, etc. are attached, and a fitting hole 4 is provided on the inner wall of the fitting hole 4 to be integrated with the frame 3. An elastic pressing piece 5 having a substantially doglegged cross section is formed. After fitting the interconnector 6 into the fitting hole 4, the liquid crystal panel 1 is fitted into the fitting hole 4, and the elastic force of the pressing piece 5 presses the liquid crystal panel 1 against the inner wall of the fitting hole 4. It is supposed to be fixed.

However, since the pressing piece 5 is formed to protrude into the fitting hole 4 and is configured to press the side surface of the liquid crystal panel 1 with its tip,
When fitting the liquid crystal panel 1 into the fitting hole 4, if the liquid crystal panel 1 is fitted from directly above the fitting hole 4, the liquid crystal panel 1 will be pressed against the pressing piece 5.
It may get caught on the top edge of the screen and damage the LCD panel. Therefore, the liquid crystal panel 1 is fitted by sliding it on the interconnector 6 from the direction in which the pressing piece 5 protrudes against the elasticity of the pressing piece 5. However, when sliding the liquid crystal panel 1 on the interconnector 6, An interconnector 6 is connected to the end surface of the liquid crystal panel 1.
There is a risk of twisting or scraping the liquid crystal panel, and the mounting of the liquid crystal panel must be done with great care, resulting in poor workability.

The purpose of this invention was made in view of the above circumstances, and the purpose is to enable the easy and secure mounting of the liquid crystal panel without any looseness, and to avoid the risk of damaging the liquid crystal panel and the interconnector during installation. The purpose of the present invention is to provide a liquid crystal panel mounting structure.

Hereinafter, embodiments of the present invention will be described based on the drawings. However, the same parts as in FIGS. 1 to 3 are denoted by the same reference numerals, and the description thereof will be omitted. Reference numeral 1 denotes a liquid crystal panel, in which a pair of transparent electrode substrates are disposed facing each other with a predetermined distance from each other, and the entire periphery of the substrates, excluding the portion that serves as the liquid crystal injection path, is liquid-tightly sealed with a spacer of a predetermined width. Liquid crystal is injected into the constructed cell, and the outer opening (liquid crystal injection port) of the liquid crystal injection path is sealed with metal such as solder. In this case, the sealing part 1a
is formed to protrude in an arc shape from the liquid crystal panel 1 due to the surface tension of metal such as solder. Furthermore, connection terminals (not shown) are formed on the flanges on both sides of the liquid crystal panel 1 in the transverse direction.

On the other hand, a projection 7a is formed at the upper end of the central part of one inner wall in the longitudinal direction of the fitting hole 4 formed in the upper part of the frame 3 made of synthetic resin or the like, and a recess 7 is formed below the projection 7a.
By forming a hole 7c in the frame body 3 in the vicinity of the protrusion 7a, an elastic holding member 7 is formed.

Therefore, when attaching the liquid crystal panel 1 to the fitting hole 4 of the frame 3, first attach the interconnectors 6 to both sides of the fitting hole 4 in the lateral direction, and then attach the liquid crystal panel 1 to the right side of the fitting hole 4. Fit from above. In this case, the protrusion 7a of the holding member 7 is pressed in the direction of the hole 7c by the arc-shaped protrusion of the sealing part 1a on the side surface of the liquid crystal panel 1, and the holding member 7 is elastically deformed to form the sealing part 1a. passes over the protrusion 7a, and the protrusion 7a of the holding member 7 engages with the upper surface of the sealing portion 1a of the liquid crystal panel 1 at the position where the press-fitting of the liquid crystal panel 1 is completed. In this state, the liquid crystal panel 1 is held by the projection 7a of the holding member 7.
is pressed against the inner wall on the opposite side and also against the interconnector 6, so that the liquid crystal panel can be accurately positioned and securely fixed. Also,
Since the liquid crystal panel 1 is fitted from directly above the fitting hole 4 and the metal sealing portion 1a and the holding member 7 are engaged, there is no possibility of damaging the liquid crystal panel 1 and the interconnector 6.

The shape of the holding member can be changed arbitrarily, and for example, as shown in Figures 6 and 7, a protrusion 8a may be formed on the inner wall of the fitting hole, a notch 8b may be formed below it, and a hole 8c may be provided in the frame 3 to form the holding member 8. It goes without saying that a holding member having a shape similar to that of the pressing piece 5 of the conventional example shown in Figures 1 to 3 may also be used.

Further, the liquid crystal panel mounting structure of the present invention is applicable not only to electronic wristwatches but also to small electronic devices using liquid crystal in the display section, such as small electronic calculators.

As mentioned above, the mounting structure of the liquid crystal panel of the present invention is as follows.
The liquid crystal panel is press-fitted into a frame body having a circuit board attached to the back surface and a fitting hole into which the liquid crystal panel is press-fitted, and the liquid crystal panel is fitted into the fitting hole of the frame body. When press-fitting, the liquid crystal injection port sealing material is elastically deformed by contacting the arcuate outer surface of the liquid crystal injection port sealing material formed on the side surface of the liquid crystal panel, and the arcuate outer surface of the sealing material is elastically deformed at the position where the press-fitting of the liquid crystal panel is completed. Since the structure includes a holding member that locks the upper surface, not only can the LCD panel be easily installed without shaking, but there is no risk of damaging the LCD panel or interconnector, and it also improves assembly work efficiency. It is excellent.

[Brief explanation of the drawing]

Figures 1 to 3 are an exploded perspective view, an exploded sectional view, and an assembled sectional view showing a conventional liquid crystal panel mounting structure, and Figures 4 and 5 are an example of an implementation in which the present invention is applied to an electronic wristwatch. FIGS. 6 and 7 are exploded perspective views and sectional views showing other embodiments of the present invention. DESCRIPTION OF SYMBOLS 1... Liquid crystal panel, 1a... Sealing part, 3... Frame body, 4... Fitting hole, 5... Pressing piece, 6... Interconnector, 7, 8... Holding member.

Claims (1)

[Scope of utility model registration request] In a liquid crystal panel mounting structure in which the liquid crystal panel is press-fitted into a frame body that has a circuit board attached to the back side and a fitting hole into which the liquid crystal panel is press-fitted, the liquid crystal panel has a liquid crystal injection port formed on the side. and has a structure in which an arcuate outer surface of a sealing material that seals the liquid crystal injection port protrudes from the side surface, and the fitting hole of the frame has a part corresponding to the sealing material. , when the liquid crystal panel is press-fitted, it is elastically deformed by contacting the arc-shaped outer surface of the sealing material, and at a position where the press-fitting of the liquid crystal panel is completed, the upper surface of the arc-shaped outer surface of the sealing material of the liquid crystal panel is pressed. A liquid crystal panel mounting structure characterized in that a retaining member for locking is formed.