JPH06160820A - Mounting structure of film liquid crystal device and electronic device equipped with film liquid crystal device - Google Patents

Abstract

(57) [Abstract] [Purpose] A film liquid crystal device is mounted in a curved state. [Structure] The upper surface 31a of the housing 31 is curved, and the film liquid crystal device 10 is arranged on the upper surface 31a. The peripheral portion of the film liquid crystal device 10 is pressed by the pressing member 40, and the hook hole 43 at the end of the pressing member 40 is attached to the housing 3.
The hook projection 37 of No. 1 is engaged and fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a film liquid crystal device as a display means and an electronic device having this mounting structure.

[0002]

2. Description of the Related Art A film liquid crystal device is known as a means for displaying time and other information on a liquid crystal. Although this film liquid crystal device is mounted on an electronic device for the purpose of thinning, a flat plate-shaped fixing member is required because of its flexibility. For this reason, compared to a liquid crystal display device using a hard glass substrate that does not require a fixing member, the thickness cannot be reduced to the left and the differentiation cannot be made. Further, the film liquid crystal device has an advantage that the shape can be easily changed and can be bent, but on the other hand, when the film liquid crystal device is bent, not only is the load applied, it is easily broken, but the display is adversely affected. May be affected.

[0003]

As described above, the conventional mounting structure using the film liquid crystal device has a problem that the characteristic of the film liquid crystal device, which is thin, cannot be utilized, and the film liquid crystal device is easily broken. Was there. The present invention has been made in consideration of such problems, and is provided with a mounting structure of a film liquid crystal device that can be thinned as a whole, is less likely to cause a failure, and has a display that is easy to see, and the mounting structure. The purpose is to provide an electronic device.

[0004]

To achieve the above object, the present invention provides a support member having at least an upper surface formed into a curved surface, a film liquid crystal device arranged on the upper surface of the support member, and a film liquid crystal device. And a pressing member for pressing the peripheral portion of the film liquid crystal device so as to contact the upper surface of the supporting member. Further, in the electronic apparatus of the present invention having this mounting structure, a support member having at least an upper surface formed into a curved surface, a film liquid crystal device arranged on the upper surface of the support member, and a control signal for driving the film liquid crystal device are provided. An electronic circuit member for outputting, a connecting member for electrically connecting the electronic circuit member and the film liquid crystal device, and a peripheral portion of the film liquid crystal device so that the film liquid crystal device contacts the upper surface of the support member. It is characterized by comprising a pressing member for pressing.

[0005]

EXAMPLES Hereinafter, referring to examples illustrating the present invention,
This will be specifically described. 1 and 2 show an embodiment in which the present invention is applied to a wristwatch type electronic device, in which a thin device case 1 and bands 2 and 2 extending from both ends of the device case 1 are integrally formed of synthetic resin. Has been done, band 2,
It is worn by winding 2 around the arm. The outer shape of the device case 1 is flat in the 3 o'clock-9 o'clock direction and curved in the 6 o'clock-12 o'clock direction so as to follow the curvature of the arm of the wearer, and the film liquid crystal device 1 described later is provided on the upper surface thereof.
A display unit 11 of 0 is arranged. The display unit 11 displays the time,
The date and other information are visually displayed by numbers, letters and the like. Reference numeral 3 is a push button switch provided on the upper surface of the device case 1 adjacent to the display unit 11, and 4 is a back cover attached to the lower surface of the device case 1.

FIG. 3 is a plan view of the film liquid crystal device 10. The upper flexible substrate 12 has a rectangular display portion 11 having display electrodes (not shown) formed on the lower surface, and the display portion 11 is surrounded. A sealing portion 13 attached to the lower surface of the upper flexible substrate 12 and a lower flexible substrate 15 having a display electrode (not shown) formed inside the sealing portion 13 and on the upper flexible substrate 12 (see FIG. 6). )
And a liquid crystal material 22 (FIG. 6) interposed therebetween.
Reference numeral 14 is a transfer member for electrically connecting the display electrodes of the lower flexible substrate to the connection terminals 16 of the upper flexible substrate. The transfer members 14 are formed at the four corners of the seal portion 13, respectively. That is, each of the four corners 13a of the seal portion 13 is formed in an arc shape rather than a right angle, and the transfer member 14 is arranged in the vicinity thereof. Reference numeral 16 is a connection terminal formed at both ends of the lower surface of the upper flexible substrate 12, and 17 is a liquid crystal material 22.
2 is a sealing portion that seals the injection port portion injected between the lower flexible substrate 15 and the lower flexible substrate 15 by soldering or the like.

FIGS. 4, 5 and 6 show a structure for mounting the film liquid crystal device 10, and the entire mounting structure 30 is incorporated as a watch module in the equipment case 1 (see FIGS. 1 and 2). In these figures, 31
Is a housing as a support member, and its upper surface 31a
Is formed into a curved curved surface, and the film liquid crystal device 10 is mounted on the upper surface 31a.

As shown in FIG. 6, the film liquid crystal device 10 includes a polarizing plate 18 which also serves as a reflector and a lower flexible substrate 1.
5, the seal portion 13, the transfer member 14, the upper flexible substrate 12, and the upper polarizing plate 19 are laminated in this order from the bottom. In addition, the upper electrode 20 is provided on the facing surfaces of the upper flexible substrate 12 and the lower flexible substrate 15.
And a lower electrode 21 are provided respectively, and a liquid crystal material 22 is filled between the flexible substrates 12 and 15. In this case, both end portions of the upper flexible substrate 12 are extended so as to be longer than the lower flexible substrate 15, and the connection terminal 1 is provided on the lower surface of this extended portion.
6 is provided, and the connection terminal 16 and the upper electrode 20 are electrically connected. Such a flexible substrate 10
Is fixed to the upper surface 31a of the housing 31 via an adhesive layer 32 such as an adhesive or a double-sided adhesive tape.

In FIG. 6, reference numeral 33 denotes a circuit board mounted on the lower surface of the housing 31, and an LSI 34 for controlling the entire electronic equipment is mounted on a predetermined portion of the circuit board. The circuit board 33 and the LSI 34 form an electronic circuit member that outputs a control signal for driving the film liquid crystal device 10. Here, interconnectors 35 are arranged at both ends of the circuit board 33. The interconnector 35 is arranged in a portion corresponding to the connection terminal 16 of the film liquid crystal device 10, and the connection terminal 16 contacts the upper surface thereof to electrically connect the electronic circuit member and the film liquid crystal device 10.

In the present embodiment, the film liquid crystal device 10
Is mounted while being pressed against the upper surface 31a of the curved housing 31, and the mounting structure will be described below. In FIGS. 4, 5 and 6,
40 is a metallic pressing member. The holding member 40 has a rectangular window portion 41 into which the display portion 11 of the film liquid crystal device 10 (in the illustrated example, the display portion 11 and the upper polarizing plate 19 are the same) is inserted. However, both side portions of the window portion 41 extend to the outside of the film liquid crystal device 10, and both extended end portions are partially bent downward. In the illustrated example, each end portion is bent at two places (see FIG. 4), and each bent portion has a hook hole 4
3 is a hook piece 42 (see FIG. 7). These hook pieces 42 hang down along both end surfaces of the housing 31, and hook projections 37 that engage with the hook holes 43 in a detachable manner are formed on both end surfaces of the housing 31 corresponding to the hook pieces 42. ing.

The pressing member 40 having the above-mentioned structure has elasticity as a whole, and is different from the film liquid crystal device 10 fixed to the upper surface 31a of the housing 31 by the adhesive layer 32.
It is attached from above. For this attachment, while fitting the display portion 11 of the film liquid crystal device 10 into the window portion 41,
This is performed by pushing down the hook pieces 42 at both end portions so that the broken line state shown in FIG. 6 changes to the solid line state, and engaging the hook projection 37 of the housing 31 and the hook hole 43 of the hook piece 42.

By attaching the pressing member 40, the film liquid crystal device 10 is fixed so as to be pressed against the upper surface 31a of the housing 31. In this fixed state, the film liquid crystal device 10 as a whole has a housing upper surface 31.
Since the display portion 11 is curved along the curved surface of a, it is possible to make the display content easy to see, and since the display portion 11 is favorably supported by the housing 31, an overload does not act and an overload does not occur. No destruction due to load will occur. Further, as the holding member 40, the film liquid crystal device 1 is used.
Any structure may be used as long as it presses the peripheral portion of 0, and the thickness can be reduced as long as this structure is provided. Therefore, it is possible to provide a mounting structure that fully utilizes the characteristic of the film liquid crystal device 10 that is thin, and there is an advantage that the electronic device can be made thin. In the illustrated example, the pressing member 40 has a structure that presses the extended portions at both ends of the upper flexible substrate 12. In such a structure, the restoring force of the lower flexible substrate 15, the sealing portion 13, and the transfer member are used. 14 and the upper flexible substrate 12
It has the property of increasing the adhesion with. Thereby, there is also a secondary merit that the film liquid crystal device 10 is favorably driven.

The present invention is not limited to the above embodiment, but can be variously modified. For example, not only the upper surface but also the lower surface of the housing 31 as the support member may be a curved surface, and the present invention may have a shape other than the wristwatch shape.

[0014]

As described above, according to the present invention, since the pressing member fixes the film liquid crystal device so as to press it on the curved surface of the supporting member, the film liquid crystal device can be mounted in a curved state, and its characteristics are utilized. Thinning is possible.

[Brief description of drawings]

FIG. 1 is a front view of an electronic device to which an embodiment of the present invention is applied.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of a film liquid crystal device.

FIG. 4 is a sectional view showing the mounting of the film liquid crystal device.

5 is a side view of FIG.

FIG. 6 is a sectional view of a mounting structure.

FIG. 7 is a partial perspective view of a holding member.

[Explanation of symbols]

 10 film liquid crystal device 31 housing 31a upper surface of housing 33 circuit board 34 LSI 35 interconnector 37 hook protrusion 40 holding member 42 hook piece 43 hook hole

Claims (1)

[Claims] 1. A support member having at least an upper surface formed into a curved surface, a film liquid crystal device disposed on the upper surface of the support member, and a film liquid crystal device of the film liquid crystal device so that the film liquid crystal device contacts the upper surface of the support member. A mounting structure for a film liquid crystal device, comprising: a holding member that holds down a peripheral portion. 1. A support member having at least an upper surface formed into a curved surface, a film liquid crystal device disposed on the upper surface of the support member, an electronic circuit member for outputting a control signal for driving the film liquid crystal device, and the electronic device. A connection member that electrically connects the circuit member and the film liquid crystal device, and a holding member that holds down the peripheral portion of the film liquid crystal device so that the film liquid crystal device contacts the upper surface of the support member. An electronic device equipped with a film liquid crystal device.