JP2001305246A - Clock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a clock having a hand shaft penetrating an opening part partially formed in pixel parts of a dot matrix type liquid crystal display panel disposed in a matrix state. SOLUTION: This clock has the matrix-like pixel parts arranged in the matrix state, each composed of an intersection point of a first electrode and a second electrode. At least one of the first electrode and the second electrode has a narrower electrode width than an electrode width forming the pixel part in the periphery of the opening part partially formed in the matrix-like pixel parts to detour the opening part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a liquid crystal display panel which performs a dot matrix type display which enables a display corresponding to a purpose by a combination of dots, instead of a segment type pixel portion configuration in which display is specified in advance. It is about watches. In particular, the present invention relates to a timepiece that uses both a needle-type analog type and a digital display on a liquid crystal display panel.

[0002]

2. Description of the Related Art A liquid crystal display panel used in a conventional timepiece has a structure in which a second electrode crossing one first electrode has 1 to 4 electrodes.
It has a segment-type pixel portion, and it is not necessary to particularly consider the electrode arrangement when providing a hole for the first substrate and the second substrate constituting the liquid crystal display panel.

[0003] A dot matrix type liquid crystal display panel is also used for a timepiece, but a liquid crystal display panel through which a pointer shaft passes is not used.

Further, it is impossible to combine an analog type design with information display by digital display. Even when an analog type and digital display are combined, since the segment type is used, the information display capability is small, and scroll display and reverse display are performed. , And the graph display could not be used together.

[0005] For this reason, it has been desired to combine an analog type design with a digital display having excellent display capability, and a dot matrix type liquid crystal display panel has been required.

[0006]

As described above, a structure having a pointer shaft hole for combining an analog display with a dot matrix type liquid crystal display panel is required.

[0007] Further, a structure in which a pointer shaft hole is provided without reducing the display capability is required. Further, it is necessary to increase the display area as much as possible and further reduce the thickness of the liquid crystal display module.

In addition, a structure is required to prevent the display visibility from being lowered by the pointer.

An object of the present invention is to pay attention to such a point, and to propose a configuration in which a pointer shaft hole is provided without substantially lowering the display performance of a dot matrix type liquid crystal display panel. Further, the invention proposes a structure for increasing the display area of the liquid crystal display panel as much as possible and further reducing the thickness of the liquid crystal display module as much as possible.

[0010]

In order to achieve the above object, the present invention employs the following structure.

A timepiece according to the present invention has a first electrode having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. A liquid crystal display panel having an opening penetrating the first substrate and the second substrate in a part of the dot display portion is used as a display portion.

[0012] The timepiece of the present invention comprises a first timepiece having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. A liquid crystal panel having an opening penetrating the first substrate and the second substrate in a part of the dot display unit is used as the display unit, and the opening is a pointer shaft hole.

[0013] The timepiece according to the present invention comprises a first timepiece having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. A portion of the dot display portion has an opening penetrating the first substrate and the second substrate, and at least one of the first electrode and the second electrode forms a pixel portion around the opening. A liquid crystal display panel that bypasses the opening with an electrode width smaller than the electrode width to be formed.

The timepiece according to the present invention has a first electrode having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. A portion of the dot display portion has an opening penetrating the first substrate and the second substrate, and at least one of the first electrode and the second electrode terminates around the opening. The liquid crystal display panel is a display unit.

The liquid crystal display panel of the timepiece according to the present invention has a plurality of openings, and at least one of the first electrode and the second electrode around each opening has a detour structure with a narrow electrode width. It is a terminal structure.

A timepiece according to the present invention has a first timepiece having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. Part of the dot display unit has an opening penetrating the first substrate and the second substrate, and an integrated circuit for applying a signal to the pixel unit is provided on the first substrate arranged for the observer. The liquid crystal display panel is mounted as a display unit, and the at least one opening is disposed substantially at the center of the outer shape of the first substrate.

The timepiece according to the present invention has a first electrode having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. Part of the dot display unit has an opening penetrating the first substrate and the second substrate, and an integrated circuit for applying a signal to the pixel unit is provided on the first substrate arranged for the observer. A liquid crystal display mounted on a flexible printed circuit board, wherein a length from an outer periphery of the first substrate to an outer periphery of the flexible printed circuit board is shorter than a length from the outer periphery of the first board to the opening. The panel is the display unit.

The timepiece according to the present invention has a first timepiece having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. Part of the dot display unit has an opening penetrating the first substrate and the second substrate, the opening has a pointer axis, and the display content of the dot display is the same as that of the pointer axis. In order to prevent the display from being shaded by the pointer depending on the position of the pointer and making it difficult to recognize the display, a liquid crystal display panel for changing the display content is used as the display unit.

The timepiece according to the present invention has a first electrode having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. A liquid crystal display panel having an opening penetrating the first substrate and the second substrate in a part of the dot display portion is used as the display portion, the opening portion has a pointer axis, and the display content of the dot display is provided. Has display content switching means for changing the display content in order to prevent the display from being shaded by the position of the hands and making it difficult to recognize, and an electrode of a liquid crystal display panel for detecting the position of the hands. And a pointer detecting means based on signal transmission between the pointer and the pointer.

The timepiece according to the present invention has a first electrode having a first electrode.
Substrate, a second substrate having a second electrode, and a first substrate and a second substrate facing each other with a predetermined gap therebetween, and a liquid crystal in a gap between the first substrate and the second substrate. A pixel portion is formed by intersecting a first electrode and a second electrode that face each other with a liquid crystal layer interposed therebetween, and a dot display portion in which the pixel portions are arranged in a matrix is provided. A portion of the dot display portion has an opening penetrating the first substrate and the second substrate, and a printed layer for blocking the opening is provided on the viewer side around the opening. The liquid crystal display panel is a display unit.

At least a part of a polarizing plate constituting a liquid crystal display panel used in the timepiece of the present invention has a reflective polarizing plate in which one polarizing axis is a transmission axis and a substantially perpendicular polarization axis is a reflection axis. It is characterized by.

The timepiece of the present invention has a liquid crystal display panel in which a plurality of pixels where a plurality of striped first electrodes and a plurality of striped second electrodes intersect are arranged in a matrix. By providing an opening in the liquid crystal display panel, it is possible to penetrate a component disposed on the back cover side of the liquid crystal display panel to the windshield side. The constituent members on the back cover side include a pointer shaft for analog time display, various sensors such as an infrared sensor, a light emitting element such as an LED, a driving unit for a doll, and the like. By combining the display of the dot matrix type liquid crystal display device with the above-mentioned constituent members, a timepiece having excellent decorativeness and design can be obtained. As described above, by providing an opening in a dot matrix type liquid crystal display panel, a timepiece can be made that has a very high impact due to the interaction between components and components that cannot be expressed by a conventional segment type liquid crystal display panel.

In the timepiece according to the present invention, at least one of the first electrode and the second electrode in a stripe shape has an electrode width smaller than a stripe width forming a dot-shaped pixel portion in the vicinity of the opening. By bypassing the opening, the electrode is not divided at the left, right, up, down, or the like of the opening, so that the electrode can be prevented from being divided into a plurality. That is, it is possible to reduce the number of processings for applying a signal to the electrode to be divided, or to reduce an area that cannot be displayed.

In the timepiece according to the present invention, at least one of the stripe-shaped electrodes of the first electrode and the second electrode terminates near the opening, so that the opening can be easily provided. . In a dot matrix type liquid crystal display panel having a plurality of openings, the width of the electrode around the opening is smaller than the width of a stripe forming a pixel portion.
By employing a structure that bypasses or terminates the opening, an electrode structure suitable for disposing the opening can be employed. For example, by adopting a detour structure in the central opening and adopting a terminal structure in an opening provided in a portion close to the outer shape of the liquid crystal display panel, the electrodes are not divided, and the area that cannot be further displayed is minimized. be able to.

Since the timepiece of the present invention is a dot matrix type liquid crystal display panel, it is necessary to apply a predetermined signal to a plurality of first electrodes and a plurality of second electrodes. As a method of reducing this, an integrated circuit (IC) for applying a predetermined signal of a liquid crystal layer is mounted on a substrate by a chip-on-glass method. The number of connections between the liquid crystal display panel and the external circuit is as follows.
When the number of electrodes is 100, when connecting to individual electrodes, 164 connections are required. However, by using the chip-on-glass method, 164 connections on the substrate are required. Is possible, and connection with an external circuit is possible with about 30 wires. However, since a chip-on-glass mounting area is required, for example, when performing chip-on-glass on one side, the center of the screen is different from the display center of the liquid crystal display panel. When the panel is incorporated, a large display area can be achieved by providing an opening near the center of the outer shape of the liquid crystal display panel and penetrating the pointer shaft.

Since the timepiece of the present invention is a dot matrix type liquid crystal display panel, it is necessary to apply a predetermined signal to a plurality of first electrodes and a plurality of second electrodes. As a method of reducing this, it is effective to mount an integrated circuit (IC) for applying a predetermined signal of a liquid crystal layer on a flexible printed board and insert the integrated circuit between a liquid crystal display panel and an external circuit. Since the components arranged on the back side of the liquid crystal display panel penetrate the opening of the liquid crystal display panel, the length from the outer periphery of the first substrate to the outer periphery of the flexible printed circuit board is increased from the outer periphery of the first substrate to the opening. Shorter than the length of. As described above, the first printed circuit board can be connected to the external circuit without turning over the flexible printed circuit board a plurality of times, and the watch can be made thinner and breakage does not occur at folds, thereby improving reliability. .

The timepiece of the present invention is a dot matrix type liquid crystal display panel, which has a pointer axis at an opening of the liquid crystal display panel. When the pointer is located on the windshield side of the liquid crystal display panel, the pointer is driven by a liquid crystal display. The display contents of the panel are blocked. As a means to prevent this, there is a method of retracting the pointer to a predetermined position, but since the pointer operates every time the display of the liquid crystal display panel is viewed, the power consumption increases and the information on the liquid crystal display panel is immediately recognized. Can not do it. Therefore, in the present invention, the concept of the fixed display is advanced to a fixed position of the conventional segment type liquid crystal display panel, and the display is changed to a position where the pointer does not block. As described above, a display with good visibility becomes possible.

The timepiece of the present invention is a dot matrix type liquid crystal display panel, and is arranged in a first electrode and a second electrode matrix. Therefore, it is possible to detect the pointer position by using each dot. It becomes possible. The pointer detecting means employs means for detecting a signal generated or reflected from the pointer in synchronization with the first electrode and the second electrode using the first electrode and the second electrode. The pointer detection is provided between one field period for displaying one screen and the next field period so as not to affect the display on the liquid crystal display panel.
A period during which no actual display is performed is adopted. As described above, the pointer can be detected without deteriorating the display quality, and the visibility of the liquid crystal display panel can be improved.

Furthermore, since the hands can be detected, when the watch is not used or when the battery level is low, first,
The pointer is detected by the liquid crystal display panel, and the pointer position is stored in a memory circuit or the like. In addition, the movement of the hands, the display on the liquid crystal display panel, and the integrated circuit are partially stopped, the power consumed by the clock is greatly reduced, and only the elapsed time is accumulated by a counter or the like in the transmitter to use the clock. When you return to the state, it will be possible to return to the current time,
This is a very effective method for a clock.

Furthermore, since the dot matrix type liquid crystal display panel has an opening, by providing a printing layer around the opening, it is possible to shield the opening and at the same time improve the design. In this case, by circumventing the opening, or by using a printing layer adjacent to the outer shape of the dot at the end portion, without impairing the dot shape,
It is possible to secure an effective display area. The printing layer may be either a liquid crystal layer side surface or a windshield side. Further, by providing a printing layer on the side surface of the liquid crystal layer in the portion close to the dot, further by providing a printing layer on the windshield side inside the opening of the printing layer on the liquid crystal layer side, It is beautiful and the display area can be used effectively.

When a polarizing plate is provided on at least one of the first substrate and the second substrate, a bright or brilliant display becomes possible by using a reflective polarizing plate as the polarizing plate. Thus, the design of the watch can be improved.

[0032]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> A timepiece according to the best mode for carrying out the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view of a timepiece according to a first embodiment of the present invention. FIG. 2 is a schematic plan view of the timepiece shown in FIG. 1 at another time. FIG.
FIG. 2 is a schematic cross-sectional view taken along line AA of the timepiece in FIG. 1. FIG. 4 is a plan view of the liquid crystal display panel used in the timepiece of the first embodiment. FIG. 5 is an enlarged plan view showing the periphery of the opening of the liquid crystal display panel shown in FIG. FIG.
It is a system block diagram. In the following, FIG. 1, FIG. 2 and FIG.
The first embodiment will be described with reference to FIG. 4, FIG. 4, FIG. 5, and FIG.

First, a first electrode 2 made of a transparent conductive film is provided on a first substrate 1 made of a transparent substrate. In the display area, the first electrode 2 is a detour 55 around the opening 6 from the first first electrode 51 to the n-th first electrode 53.
, Except for the first row, the first row of the first electrode 51, the first row of the m-th electrode 52, and the first row of the n-th electrode 53. Around the opening 6 represented by the m-th electrode, an m-th first electrode bypass portion 55 having a width smaller than the stripe-shaped first electrode 2 is provided.

A second substrate 5 made of a transparent conductive film is provided on a second substrate 5 opposed to the first substrate 1 with a predetermined gap.
Are provided. In the display area, the second electrodes 8 extend from the first second electrode 61 to the q-th second electrode 63.
It is a striped column electrode pattern that is substantially parallel except for the detour portion 65 around the opening 6, and as a representative, the first second electrode 61, the p-th second electrode 62, and the q-th second electrode The electrode 63 is shown. Around the opening 6 represented by the p-th electrode, a p-th second electrode bypass portion 65 having a width smaller than the stripe-shaped second electrode 8 is provided. Opening 6
Are arranged at the center of the display area.

An n * m dot matrix type liquid crystal display panel comprising n first electrodes and q second electrodes is obtained. The opening 6 has a structure penetrating from the first substrate 1 to the second substrate 5. Around the opening 6, a sealing material 9 is provided to seal the liquid crystal layer 7. A seal material 9 is also provided near the outer shape of the second substrate 5 to enclose a liquid crystal layer. The liquid crystal layer 7 has a super twist nematic (ST) having a twist angle of any of 210 degrees to 260 degrees.
N) Liquid crystal is adopted, and an alignment film (not shown) for aligning the liquid crystal layer 7 in a predetermined direction is provided on the first substrate 1 and the second substrate 5.

The second electrode 8 provided on the second substrate 5 includes a first anisotropic conductive seal 73 and a second anisotropic conductive seal 74 provided around the display area. To connect to the second electrode IC connection portion 67 on the first substrate 1. Since the conductive particles (not shown) are mixed with the insulating resin, the anisotropic conductive seal portion can be connected to the second electrode IC connection portion 67 from the second electrode 8 via the conductive particles. Further, the first electrode 2 is provided on the outer periphery of the display area at the first electrode I.
Connect to C connection 57. As described above, the first electrode 2 and the second electrode 8 terminate at the first electrode IC connection portion 57 and the second electrode IC connection portion 67 provided on the first substrate 1. Can be. The IC connection parts 57 and 67 are
An integrated circuit (IC) 71 for applying a predetermined voltage waveform to each pixel portion based on a signal from the circuit board 25 is connected by a chip-on-glass.

The integrated circuit 71 has an input terminal 76 for inputting a signal from the circuit board 25. The integrated circuit 71 is provided on one side of the first substrate 1, and the wiring between the first electrode 2 and the anisotropic conductive seal portions 73 and 74 is arranged from the first 51 to the m-th 52 on the left side of the drawing. In addition, the (m + 1) th to nth 53 are arranged on the right side of the drawing. By arranging the same number on the left and right, the display areas can be arranged symmetrically on the left and right. Also, the second electrode 8 and the IC connection part 5
The wiring with 7 is arranged only on the integrated circuit 71 side.

On the windshield 32 side of the first substrate 1, there is disposed a first polarizing plate 11 formed of an absorption type polarizing plate having one absorption axis as an absorption axis and a substantially orthogonal polarization axis as a transmission axis. Then, on the back cover 33 side of the second substrate 5, a second polarizing plate 12 made of a reflective polarizing plate whose one polarization axis is a reflection axis and a substantially orthogonal polarization axis is a transmission axis is arranged. . The liquid crystal layer 7 is provided between the first polarizing plate 11 and the first substrate 1 or between the second polarizing plate 12 and the second substrate 5.
A retardation film (not shown) is provided in order to correct the coloring due to the birefringence effect. An adhesive layer having a diffusivity is provided between the second polarizing plate 12 and the second substrate 5 or the retardation film. With the above configuration, an n * m dot matrix type liquid crystal display panel module having the opening 6 is completed.

On the back cover 33 side of the dot matrix type liquid crystal display panel module, a light source 13 composed of an electroluminescent (EL) element, a minute hand 17 and an hour hand 18 are provided.
The drive unit 15 having the pointer shaft 16 connected to the drive unit 15 is disposed.
The pointer shaft 16 passes through the opening 6 of the dot matrix type liquid crystal display panel module from the drive unit 15 and passes through the windshield 3
It protrudes to two sides. The opening 6 functions as a pointer shaft hole 19.

Further, an integrated circuit (IC) 7 mounted on the first substrate 1 of the dot matrix type liquid crystal display panel by a chip-on-glass method is provided on the back cover 33 side of the driving section 15.
1 or a signal to be applied to the drive unit 15 or a circuit board 2 having a power supply circuit, a transmission circuit, etc.
5 is provided. Battery 2 as an energy source for circuit board 25
6 are connected. The connection between the circuit board 25 and the dot matrix type liquid crystal display panel module is made by a zebra rubber 28 having conductive parts and insulating parts alternately laminated, and is held by a module frame 29.

Further, the windshield 3 of the first polarizing plate 11
On the second side, a printing layer 21 having a shielding effect is provided. Further, the module frame 29 has a parting plate 27 to form a time character 41. With the above configuration, a timepiece module is obtained. The watch module consists of a watch case 31 and a windshield 3
2 and the back cover 33. The clock has an adjustment dial 3 for turning on / off the display contents of the liquid crystal display panel, changing the display contents, correcting the time, or turning on the light source.
4

Next, a display example using a dot matrix type liquid crystal display panel of a timepiece will be described. As shown in FIG. 1 and FIG. 2, a display area variable section A44 and a display area variable section B45 are provided. The display area variable section A44 displays the schedule, and the display area variable section B45 displays the date and time and the remaining memory capacity. The difference between FIG. 1 and FIG. 2 is that the times indicated by the hands 17 and 18 are different. FIG. 1 is at 1:00, and the display area variable section A44 is divided and displayed on the left and right of the minute hand 7. FIG. 2 is 1:25, and since a part of the display area variable portion A44 is shielded by the hour hand 18, all of them are displayed collectively on the left side of the hour hand 18. As described above, the display content of the liquid crystal display panel can be presented to the hour hand 18 without being shielded.

Next, the timepiece system of the present invention will be described with reference to a system block diagram shown in FIG. A predetermined voltage is supplied from a power supply circuit 82 required for various circuits from a power supply 26 which is an energy source of the watch to a reference clock transmission circuit 83, a pointer low power consumption means 93, a pointer position detection circuit 96, a pointer axis driver circuit 97, The light is supplied to the light source lighting circuit 95. The reference clock transmission circuit 83 generates a reference signal for time display, and is transmitted to the pointer shaft driver circuit 97 to drive the minute hand 17 and the hour hand 18. Further, it is transmitted to a synchronization separation circuit 84 for synchronizing the selection signal of the liquid crystal display panel and the data signal. The signal of the synchronization separation circuit 84 is transmitted to the display position switching means 87 via the vertical synchronization circuit 85 and the horizontal synchronization circuit 86.

The display position switching means 87 comprises a data signal waveform switching means 88 and a selection signal waveform switching means 9
0. From the display position switching means 87,
The liquid crystal display panel 81 via the data signal generation circuit 89
A predetermined signal waveform is applied to the second electrode. Further, a predetermined signal waveform is applied from the display position switching means 87 to the first electrode of the liquid crystal display panel 81 via the selection signal generation circuit 91.

The signal of the hand position detection circuit 96 is applied to the pointer shaft driver circuit 97 and the display position switching means 87. That is, the hand position detection circuit 96 can prevent the displayed content from being blocked by the minute hand 17 or the hour hand 18. Further, the light source lighting circuit 95 includes the light source 1
3 is turned on and off. By detecting the pointer position even when the light source 13 is turned on, it is possible to improve the visibility of the liquid crystal display panel 81 and improve the visibility of the pointer position by irradiating the hands 17 and 18 with light. .

The signal of the hand position detecting circuit 96 is transmitted to the pointer power saving means 93 in order to reduce the power consumption of the timepiece and maintain the basic function of the timepiece. The pointer low power consumption means 93 includes an elapsed time integrating circuit 98 for measuring the time from the time when the pointer is stopped, a pointer position storage circuit 99 for storing the stop position of the pointer, and a pointer return circuit for returning the driving of the pointer. 100. For example, during a period in which the clock is not used, the position of the pointer is detected by rotating the adjustment dial 34 a predetermined number of times, the position information of the pointer is read and stored, and the operation of the pointer is stopped. Also, the display on the dot matrix type liquid crystal display panel is stopped at the same time. As described above, the timepiece can have extremely low power consumption.

Also, by storing the pointer position and measuring the time from the stop of the pointer at the same time, when returning the pointer to the current time by the signal from the adjustment dial 34 again, the pointer position to be present and the stop position should be determined. By performing the difference calculation and operating the pointer from the pointer axis driver 97 until the current time, the pointer can be returned to the current time. Further, it is possible to verify whether the pointer is at a correct position after the return by the pointer detecting means. In particular, since the hands of the dot matrix type liquid crystal display panel can be used to detect the hands by the pixel portion of the dot matrix type liquid crystal display panel, the display and the hands can be detected, which is very effective. Further, since the position of the pointer is not required to be detected near the opening of the dot matrix type liquid crystal display panel, there is no problem even if the detour is provided.

As is clear from the above description, when an opening is provided in the display section of a dot matrix type liquid crystal display panel, the electrode width of the first electrode and the second electrode is reduced around the opening, By providing the bypass portion, it is possible to prevent the left and right electrodes or the upper and lower electrodes of the opening from being further divided without greatly reducing the pixel portion. Therefore, the number of IC connection portions can be reduced, and the number of pixels effective for display can be improved.

As is clear from the above description, when an opening is provided in the display section of a dot matrix type liquid crystal display panel, the electrode width of the first electrode and the second electrode is reduced around the opening, By providing the bypass portion, it is possible to prevent the left and right electrodes or the upper and lower electrodes of the opening from being further divided without greatly reducing the pixel portion. Therefore, the number of IC connection portions can be reduced, and the number of pixels effective for display can be improved.

Further, the first electrodes of the dot matrix type liquid crystal display panel are divided into the same number of right and left parts on the left and right sides in the drawing and wired to the IC connection part, so that the display area is arranged at the center with respect to the outer shape. Since the display area can be symmetrical with respect to the hands when used together with the analog type that displays the time using hands, it is effective in terms of design.

Further, the position of the pointer is detected to prevent the display of the dot matrix type liquid crystal display panel from being blocked by the pointer. Furthermore, since the display can be changed depending on the pointer position to prevent particularly important display contents from being blocked by the pointer, the visibility of the display is improved. Further, even when the light source is turned on, the display content is shifted from the pointer position, so that the pointer can be actively irradiated with light, and the visibility of the pointer position is greatly improved.

Further, the position of the pointer can be detected using the electrodes of the dot matrix type liquid crystal display panel, and the position of the resolving power corresponding to each dot can be detected. Therefore, the position of the pointer can be detected without complicating the configuration, which is very effective. In addition, the pointer position detection can reduce the power consumption of the timepiece.

<Second Embodiment> Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. A feature of the second embodiment is that a second electrode of a dot matrix type liquid crystal display panel used for a timepiece is divided and wired at the center. FIG. 7 is a plan view of a liquid crystal display panel used for a timepiece according to the second embodiment of the present invention. Hereinafter, the second embodiment will be described with reference to FIG.

First, a first electrode 2 made of a transparent conductive film is provided on a first substrate 1 made of a transparent substrate. In the display area, the first electrode 2 is a stripe-shaped row electrode pattern that is substantially parallel from the first first electrode 51 to the n-th first electrode 53 except for a detour 55 around the opening 6. As a representative, the first first electrode 51 and the m-th first electrode 51
And the n-th first electrode 53 are shown.
Around the opening 6 represented by the m-th electrode, an m-th first electrode bypass portion 55 having a width smaller than the stripe-shaped first electrode 2 is provided.

A second substrate 5 made of a transparent conductive film is provided on a second substrate 5 facing the first substrate 1 with a predetermined gap.
Are provided. The second electrode 8 is a striped column electrode pattern from the first second electrode 61 to the q-th second electrode 63 in the display area, and the first second electrode 61 and the p-th Of the second electrode 62 and the q-th second electrode 63 are shown. The second near the opening 6
This electrode has a shorter length from the display outer shape than the other second electrodes, and has a shape that terminates around the opening 6.

Further, the same number of the second electrodes are taken out of the display area at the front and back of the drawing to enable connection to the circuit board. The opening 6 is at the center of the display area,
And it is arranged at the center of the outer shape of the substrate.

An n * m dot matrix type liquid crystal display panel comprising n first electrodes and q second electrodes is obtained. The opening 6 has a structure penetrating from the first substrate 1 to the second substrate 5. Around the opening 6, a sealing material 9 is provided to seal the liquid crystal layer 7. A seal material 9 is also provided near the outer shape of the second substrate 5 to enclose a liquid crystal layer. The liquid crystal layer 7 has a super twist nematic (ST) having a twist angle of any of 210 degrees to 260 degrees.
N) Liquid crystal is adopted, and an alignment film (not shown) for aligning the liquid crystal layer 7 in a predetermined direction is provided on the first substrate 1 and the second substrate 5.

In the second electrode 8 provided on the second substrate 5, the sealing material 9 used for sealing the liquid crystal layer 7 provided around the display area is made of an anisotropic conductive sealing material. To connect to the connection portion on the first substrate 1. Since the conductive particles (not shown) are mixed with the insulating resin, the anisotropic conductive sealing material can be connected to the connection portion from the second electrode 8 via the conductive particles. In addition, the first electrodes 2 are connected to the circuit board by drawing out the same number of electrodes in the display area in front of and behind the drawing. This is an effective configuration when the number of pixel portions is small, because the display area can be made larger than the outer shape of the substrate.

As is clear from the above description, the opening of the dot matrix type liquid crystal display panel can be arranged at the center of the display area and the outer shape of the substrate. Furthermore, since the second electrode is divided and wired in two directions, it is only necessary to terminate around the opening, so that the possibility of the second electrode breaking around the opening can be greatly reduced. The second embodiment is particularly effective when the pixel portion is relatively small and the stripe width of the second electrode is narrower than the stripe width of the first electrode. Further, since the sealing material for sealing the liquid crystal layer 7 can be used as the anisotropic conductive sealing portion, it is effective when the number of first electrodes is small.

<Third Embodiment> Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. A feature of the third embodiment is that a second electrode of a dot matrix type liquid crystal display panel used for a timepiece is divided at a center and wired.
When mounting an integrated circuit for applying signals to a dot matrix type liquid crystal display panel on a flexible printed circuit board with an anisotropic conductive film and forming a dot matrix type liquid crystal display panel module, The point is to implement folding. FIG. 8 is a plan view of a liquid crystal display panel used for a timepiece according to the third embodiment of the present invention. Hereinafter, the third embodiment will be described with reference to FIG.

First, a first electrode 2 made of a transparent conductive film is provided on a first substrate 1 made of a transparent substrate. In the display area, the first electrode 2 is a stripe-shaped row electrode pattern that is substantially parallel from the first first electrode 51 to the n-th first electrode 53 except for a detour 55 around the opening 6. As a representative, the first first electrode 51 and the m-th first electrode 51
And the n-th first electrode 53 are shown.
Around the opening 6 represented by the m-th electrode, an m-th first electrode bypass portion 55 having a width smaller than the stripe-shaped first electrode 2 is provided.

A second substrate 5 made of a transparent conductive film is provided on a second substrate 5 facing the first substrate 1 with a predetermined gap.
Are provided. The second electrode 8 is a striped column electrode pattern from the first second electrode 61 to the q-th second electrode 63 in the display area, and the first second electrode 61 and the p-th Of the second electrode 62 and the q-th second electrode 63 are shown. The second near the opening 6
This electrode has a shorter length from the display outer shape than the other second electrodes, and has a shape that terminates around the opening 6.

Further, the same number of the second electrodes are taken out of the display area at the front and back of the drawing to enable connection to the circuit board. The opening 6 is at the center of the display area,
And it is arranged at the center of the outer shape of the substrate.

An n * m dot matrix type liquid crystal display panel comprising n first electrodes and q second electrodes is obtained. The opening 6 has a structure penetrating from the first substrate 1 to the second substrate 5. Around the opening 6, a sealing material 9 is provided to seal the liquid crystal layer 7. A seal material 9 is also provided near the outer shape of the second substrate 5 to enclose a liquid crystal layer. The liquid crystal layer 7 has a super twist nematic (ST) having a twist angle of any of 210 degrees to 260 degrees.
N) Liquid crystal is adopted, and an alignment film (not shown) for aligning the liquid crystal layer 7 in a predetermined direction is provided on the first substrate 1 and the second substrate 5.

Further, the second electrode 8 provided on the second substrate 5 includes a first anisotropic conductive seal 73 and a second anisotropic conductive seal 74 provided around the display area. The third anisotropic conductive seal portion 75 and the fourth anisotropic conductive seal portion 76 serve as wiring electrodes to the heat seal portion 105 for connection with the flexible printed circuit board 101 on the first substrate 1. Connecting. Since the anisotropic conductive seal portion is made by mixing conductive particles (not shown) with the insulating resin, the second electrode 8
Can be connected to the wiring electrode to the heat seal portion via conductive particles.

The same number of the first electrodes 2 are drawn to the front and back of the display area in the drawing to enable connection to the circuit board. Even when the number of pixel portions is large, stable connection can be achieved by connecting to the flexible printed circuit board 101 using the heat seal portion 105. Further, the heat seal portion 105 may be overlapped on the first substrate 1 by about 1 mm, and
By folding 1, processing can be performed within the outer shape of the substrate. Furthermore, the first of the flexible printed circuit board 101
When the length W from the outer shape of the substrate 1 is shorter than the length L from the outer shape of the first substrate 1 to the opening 6, the flexible printed board 101 is connected to a circuit board (not shown). In addition, since the folding is not performed a plurality of times, it is possible to limit the thickness and prevent disconnection of the first wiring electrode 102 on the flexible printed circuit board 101 due to the folded portion.

Further, an integrated circuit (IC) 71 for applying a predetermined signal to the pixel portion of the dot matrix type liquid crystal display panel.
Is mounted on the flexible printed circuit board 101 using an anisotropic conductive film (not shown). On the flexible printed board 101, a first input electrode for applying a predetermined signal from the circuit board to the integrated circuit 71 is provided. In the third embodiment, the flexible printed circuit boards 101 are provided on two opposing sides of the first circuit board 1.

As described above, the openings are provided in the dot matrix type liquid crystal display panel, and the connection with the circuit board is made via a flexible printed board having an integrated circuit. Further, the length of the flexible printed board from the first board outer shape is shorter than the length of the first board outer shape and the opening, so that the number of times the flexible printed board is folded is reduced. With the above structure, the display area of the dot matrix type liquid crystal display panel having the opening can be made larger than the outer shape of the substrate, so that the display capacity can be increased and the visibility can be improved. Further, disconnection of the electrodes on the flexible printed circuit board can be prevented. Further, when a dot matrix type liquid crystal display panel module is formed, the mounting thickness of the flexible printed circuit board can be reduced.

<Fourth Embodiment> Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. A feature of the fourth embodiment is that a dot matrix type liquid crystal display panel used for a timepiece has three openings. FIG. 9 is a plan view of a liquid crystal display panel used for a timepiece according to a fourth embodiment of the present invention. The fourth embodiment will be described below with reference to FIG.

First, a first electrode 2 made of a transparent conductive film is provided on a first substrate 1 made of a transparent substrate. In the display area, the first electrode 2 forms a detour section 65 around the first opening 36 and the second opening 37 from the first first electrode 51 to the n-th first electrode 53. Except for the striped column electrode pattern, which is almost parallel. Further, around the third opening 38, some of the first electrodes have a detour, and
The first electrode of the book has a structure that terminates. FIG. 9 illustrates a first first electrode 51, an m-th first electrode 52, and an n-th first electrode 53 as representatives. Around the first opening 36 represented by the m-th electrode, an m-th first electrode bypass portion 55 having a width smaller than the stripe-shaped first electrode 2 is provided.

A second substrate 5 made of a transparent conductive film is provided on a second substrate 5 opposed to the first substrate 1 with a predetermined gap.
Are provided. In the display area, the second electrodes 8 extend from the first second electrode 61 to the q-th second electrode 63.
The stripe-shaped column electrode pattern is substantially parallel except for a detour portion 65 around the first opening 36 and the third opening 38. Further, around the second opening 37, some of the first electrodes have a detour portion, and the two first electrodes have a structure of terminating. As a representative, a first second electrode 61, a p-th second electrode 62, and a q-th second electrode 63 are shown. Around the first opening 36 represented by the p-th electrode, there is a p-th second electrode detour 65 narrower than the stripe-shaped second electrode 8.

The first electrode or the second electrode around the opening
The reason why the terminal portion is provided in the electrode is that the opening is close to the outer periphery of the display area, and even in a dot matrix type liquid crystal display panel having a plurality of openings, detour portions are provided around all the openings. Is also effective.

As described above, the three openings 36, 37, 3
Thus, an n * m dot matrix type liquid crystal display panel including n first electrodes having 8 and q second electrodes is obtained. In addition, the three openings 36, 37, and 38 correspond to the first substrate 1
From the first substrate to the second substrate 5. Around the three openings 26, 37, and 38, a sealing material (not shown) is provided to seal the liquid crystal layer 7. A sealing material (not shown) is also provided in the vicinity of the outer shape of the second substrate 5 to enclose a liquid crystal layer. The liquid crystal layer employs super twisted nematic (STN) liquid crystal, and has an alignment film (not shown) on the first substrate 1 and the second substrate 5 for aligning the liquid crystal layer in a predetermined direction. .

The second electrode provided on the second substrate 5 is formed by a first anisotropic conductive seal portion 73 and a second anisotropic conductive seal portion 74 provided around the display area. First
To the second electrode IC connection portion 67 on the substrate 1.
Since the conductive particles (not shown) are mixed with the insulating resin, the anisotropic conductive seal portion can be connected to the second electrode IC connection portion 67 from the second electrode 8 via the conductive particles. Also,
The first electrode 2 is connected to the first electrode IC connection portion 57 at the outer periphery of the display area. As described above, the first electrode 2 and the second electrode 8 terminate at the first electrode IC connection portion 57 and the second electrode IC connection portion 67 provided on the first substrate 1. Can be. The IC connection units 57 and 67 are provided with an integrated circuit (IC) 71 for applying a predetermined voltage waveform to each pixel unit based on a signal from the circuit board 25 and a chip-on-chip.
Connect with glass.

The integrated circuit 71 has an input terminal 76 for inputting a signal from the circuit board 25. The integrated circuit 71 is provided on one side of the first substrate 1, and the wiring between the first electrode 2 and the anisotropic conductive seal portions 73 and 74 is arranged from the first 51 to the m-th 52 on the left side of the drawing. In addition, the (m + 1) th to nth 53 are arranged on the right side of the drawing. By arranging the same number on the left and right, the display areas can be arranged symmetrically on the left and right. Also, the second electrode 8 and the IC connection part 5
The wiring with 7 is arranged only on the integrated circuit 71 side.

As described above, even in a dot matrix type liquid crystal display panel having a plurality of openings, the number of wirings connected to the integrated circuit 71 is not increased, and a portion other than the detour around the opening is effectively used. It is possible to form a dot matrix pixel portion.

<Fifth Embodiment> Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings. In the fifth embodiment, how to detect a pointer position using a dot matrix type liquid crystal display panel will be described. FIG.
It is a schematic plan view which expands a part of a hand part of a timepiece and a dot matrix type liquid crystal display panel in a fifth embodiment of the present invention. FIG. 11 is a waveform diagram showing signals used for display on the dot matrix type liquid crystal display panel and for detecting the position of the pointer. Hereinafter, a fifth embodiment will be described with reference to FIGS. 10 and 11 alternately.

First, the dot matrix type liquid crystal display panel includes a plurality of first electrodes (m-th first electrode 52) and a plurality of second electrodes (representative) orthogonal to the first electrodes. It has a plurality of pixel portions arranged in a matrix and composed of a p-th second electrode 62). A minute hand 17 and an hour hand 18 rotate around a pointer shaft (not shown) on the plurality of pixel portions to present time. The minute hand 17 is provided with a minute hand signal detection unit 111 for detecting a signal generated from the first electrode or the second electrode. The signal of the minute hand signal detection unit 111 is used as a minute hand position signal 112 as a pointer position detection circuit 9.
To 6. The hour hand 18 has a first electrode or a second electrode.
An hour hand signal detection unit 115 for detecting a signal generated from the electrode of the second hand is provided.

The timing for detecting the pointer position is shown in FIG.
This will be described with reference to the waveform diagram of FIG. The horizontal axis of the paper is the time axis 121.
In order to prevent the application of the DC component to the liquid crystal layer, an AC waveform having a positive polarity and a negative polarity are applied to each screen (field). Tf1 plus field time
(+) 122, and the time of the minus field is Tf1
(-) 123. Tf1 is 16 milliseconds (msec.) To several milliseconds (msec.) In order to prevent flicker. When Tf1 is short, the current consumed by the liquid crystal display device increases due to an increase in the frequency for driving the liquid crystal and an increase in the voltage applied to the liquid crystal.

The driving voltages applied to the liquid crystal layer are V1, V2,
It consists of six level signals V3, V4, V5 and V6. Tf
1 (+) includes a first selection period 125 and a second selection period 12
6 and the third selection period 127 are shown as representatives. In addition, a pointer reading period 129 is provided in the last fixed period of the times 122 and 123 of each field.

First, FIG. 11A shows a signal waveform applied to the first first electrode. In the plus field time Tf1 (+) 122, in the first selection period 125, the first selection voltage V6 is applied in the first first electrode selection period 131. Thereafter, the first first electrode holding period 1
32, the first holding voltage V2 is applied. Next, during the hand reading period 129, n of the hand reading period 129 is set.
A voltage of V6 is applied during the first reading period 133 of the first electrode pointer corresponding to one-half the time.

Next, FIG. 11B shows a signal waveform applied to the n-th first electrode. In the plus field time Tf1 (+) 122, in the n-th selection period,
During the n-th first electrode selection period 136, the n-th selection voltage V
6 is applied. In the n-th first electrode holding period 135, an n-th holding voltage V2 is applied. Next, in the hand reading period 129, 1 / n of the hand reading period 129 is used.
A voltage V6 is applied during the n-th first electrode pointer reading positive period 137 corresponding to the time period.

The waveforms of FIGS. 11A and 11B are applied to the first electrode, and the signal waveform of FIG. 11C is applied to the second electrode. c represents a signal waveform applied to the first second electrode as a representative. Plus field time Tf1
In (+) 122, during the first selection period 125, 1
As the second electrode on-period 141, a voltage V1 is applied to apply a large voltage (on-voltage) to the liquid crystal layer. A potential difference between V6 and V1 can be applied to the liquid crystal layer. In the second selection period 126, a small voltage (off voltage) is applied to the liquid crystal layer as a first second electrode off period 142.
Is applied to apply V4. In the liquid crystal layer,
A potential difference between V2 and V4 can be applied. In addition, during the first second hand reading period 143 corresponding to the hand reading period 129, since a hand reading signal is applied to the first electrode, a constant voltage including an OFF voltage is applied. As a result, the signal from the first electrode is transmitted to the hands 17, 1
8 can be easily detected.

Next, a driving waveform for applying a signal for detecting the pointer position to the second electrode will be described. The signal waveform shown in FIG. 11D is a signal waveform applied to the first first electrode, and is substantially the same as the signal waveform shown in FIG. 11A, except that the signal applied during the pointer reading period 129 is different. In the plus field time Tf1 (+) 122, in the first selection period 125, the first selection voltage V6 is applied in the first first electrode selection period 131. Thereafter, in the first first electrode holding period 132, the first holding voltage V2 is applied. During the pointer reading period 129, a constant voltage consisting of a holding voltage is applied to apply a pointer reading signal to the second electrode. Thereby, the signal from the second electrode can be easily detected by the hands 17 and 18.

The waveform shown in FIG. 11D is applied to the first electrode,
In the second electrode, the signal waveform in FIG. 11E is a signal waveform applied to the first second electrode, and is substantially the same as the signal waveform in FIG. The applied signal is different. Plus field time Tf1
In (+) 122, during the first selection period 125, 1
As the second electrode on-period 141, a voltage V1 is applied to apply a large voltage (on-voltage) to the liquid crystal layer. A potential difference between V6 and V1 can be applied to the liquid crystal layer. In the second selection period 126, a small voltage (off voltage) is applied to the liquid crystal layer as a first second electrode off period 142.
Is applied to apply V4. In the liquid crystal layer,
A potential difference between V2 and V4 can be applied. Further, during the first second hand reading period 146 corresponding to the hand reading period 129, V6 is added to the first second electrode hand reading period 146 corresponding to a time equal to 1 / q of the hand reading period 129. Is applied.

The signal for the above-mentioned pointer reading period is set to the minute hand 17.
And the hour hand 18 are detected by the signal detectors 111 and 115, transmitted to the pointer position detection circuit 96 as position signals 112 and 116, and synchronized with the pointer reading period applied to each of the first and second electrodes. By taking the signal, it is possible to detect which pixel unit the signal is from. That is, it is possible to recognize the pointer position.

In the fifth embodiment, the signal waveform for detecting the pointer position using all the pixel portions is shown. However, since the trajectory of the pointer is known in advance, some pixel portions are used. Of course, it is also possible to detect the pointer position.

Further, in the embodiment of the present invention, the description has been made with respect to the two-hand type timepiece of the minute hand and the hour hand.

Further, in the embodiment of the present invention, the dot matrix type liquid crystal display panel in which the entire display area is composed of n * q pixel portions has been described. However, the area including the periphery of the opening is at least the dot matrix type. Even when a conventional segment-type pixel portion is provided around the dot matrix region, the effect of the present invention is naturally effective.

[0090]

As is apparent from the above description, in the timepiece of the present invention, a plurality of pixels in which a plurality of striped first electrodes and a plurality of striped second electrodes intersect are formed in a matrix. It has a liquid crystal display panel to be arranged. By providing an opening in the liquid crystal display panel, it is possible to penetrate a component disposed on the back cover side of the liquid crystal display panel to the windshield side. The constituent members on the back cover side include a pointer shaft for analog time display, various sensors such as an infrared sensor, a light emitting element such as an LED, a driving unit for a doll, and the like. By combining the display of the dot matrix type liquid crystal display device with the above-described constituent members, a timepiece having excellent decorativeness and design can be obtained. As described above, by providing an opening in a dot matrix type liquid crystal display panel, a timepiece can be made that has a very high impact due to the interaction between components and components that cannot be expressed by a conventional segment type liquid crystal display panel.

In the timepiece of the present invention, at least one of the first electrode and the second electrode in the form of stripes has an electrode width smaller than the stripe width constituting the dot-like pixel portion in the vicinity of the opening. By bypassing the opening, the electrode is not divided at the left, right, up, down, or the like of the opening, so that the electrode can be prevented from being divided into a plurality. That is, it is possible to reduce the number of processings for applying a signal to the electrode to be divided, or to reduce an area that cannot be displayed.

In the timepiece of the present invention, at least one of the striped electrodes of the first electrode and the second electrode terminates near the opening, so that the opening can be easily provided. . In a dot matrix type liquid crystal display panel having a plurality of openings, the width of the electrode around the opening is smaller than the width of a stripe forming a pixel portion.
By employing a structure that bypasses or terminates the opening, an electrode structure suitable for disposing the opening can be employed. For example, by adopting a detour structure in the central opening and adopting a terminal structure in an opening provided in a portion close to the outer shape of the liquid crystal display panel, the electrodes are not divided, and the area that cannot be further displayed is minimized. be able to.

Since the timepiece of the present invention is a dot matrix type liquid crystal display panel, it is necessary to apply a predetermined signal to a plurality of first electrodes and a plurality of second electrodes. As a method for reducing this, an integrated circuit (IC) for applying a predetermined signal of a liquid crystal layer is mounted on a substrate by a chip-on-glass method. The number of connections between the liquid crystal display panel and the external circuit is as follows.
When the number of electrodes is 100, when connecting with individual electrodes, 164 connections are required. However, by using the chip-on-glass method, 164 connections on the substrate are required. Is possible, and connection with an external circuit is possible with about 30 wires. However, since a chip-on-glass mounting area is required, for example, when chip-on-glass is performed on one side, the center of the screen and the display center of the liquid crystal display panel are different, so that the watch has a liquid crystal display. When the panel is incorporated, a large display area can be achieved by providing an opening near the center of the outer shape of the liquid crystal display panel and penetrating the pointer shaft.

Since the timepiece of the present invention is a dot matrix type liquid crystal display panel, it is necessary to apply a predetermined signal to a plurality of first electrodes and a plurality of second electrodes. As a method of reducing this, it is effective to mount an integrated circuit (IC) for applying a predetermined signal of a liquid crystal layer on a flexible printed board and insert the integrated circuit between a liquid crystal display panel and an external circuit. Since the components arranged on the back side of the liquid crystal display panel penetrate the opening of the liquid crystal display panel, the length from the outer periphery of the first substrate to the outer periphery of the flexible printed circuit board is increased from the outer periphery of the first substrate to the opening. Shorter than the length of. As described above, the first printed circuit board can be connected to the external circuit without turning over the flexible printed circuit board a plurality of times, and the watch can be made thinner and breakage does not occur at folds, thereby improving reliability. .

The timepiece of the present invention is a dot matrix type liquid crystal display panel, which has a pointer axis at the opening of the liquid crystal display panel. The display contents of the panel are blocked. As a means to prevent this, there is a method of retracting the pointer to a predetermined position, but since the pointer operates every time the display of the liquid crystal display panel is viewed, the power consumption increases and the information on the liquid crystal display panel is instantly recognized. Can not do it. Therefore, in the present invention, the concept of the fixed display is advanced to a fixed position of the conventional segment type liquid crystal display panel, and the display is changed to a position where the pointer does not block. As described above, a display with good visibility becomes possible.

The timepiece of the present invention is a dot matrix type liquid crystal display panel, and is arranged in the form of a first electrode and a second electrode matrix. Therefore, it is possible to detect the pointer position by using each dot. It becomes possible. The pointer detecting means employs means for detecting a signal generated or reflected from the pointer in synchronization with the first electrode and the second electrode using the first electrode and the second electrode. The pointer detection is provided between one field period for displaying one screen and the next field period so as not to affect the display on the liquid crystal display panel.
A period during which no actual display is performed is adopted. As described above, the pointer can be detected without deteriorating the display quality, and the visibility of the liquid crystal display panel can be improved.

Further, since the hands can be detected, when the clock is not used or when the battery level is low, first,
The pointer is detected by the liquid crystal display panel, and the pointer position is stored in a memory circuit or the like. In addition, the movement of the hands, the display on the liquid crystal display panel, and the integrated circuit are partially stopped, the power consumed by the clock is greatly reduced, and only the elapsed time is accumulated by a counter or the like in the transmitter to use the clock. When you return to the state, it will be possible to return to the current time,
This is a very effective method for a clock.

Further, since the dot matrix type liquid crystal display panel has an opening, by providing a printing layer around the opening, the opening can be shielded and the design can be improved. In this case, by circumventing the opening, or by using a printing layer adjacent to the outer shape of the dot at the end portion, without impairing the dot shape,
It is possible to secure an effective display area. The printing layer may be either a liquid crystal layer side surface or a windshield side. Further, by providing a printing layer on the side surface of the liquid crystal layer in the portion close to the dot, further by providing a printing layer on the windshield side inside the opening of the printing layer on the liquid crystal layer side, It is beautiful and the display area can be used effectively.

When a polarizing plate is provided on at least one of the first substrate and the second substrate, a bright or brilliant display becomes possible by using a reflective polarizing plate as the polarizing plate. Thus, the design of the watch can be improved.

The present invention is naturally effective in a color liquid crystal display panel having a color filter layer provided on the first substrate or the second substrate.

Although the present invention has been described with reference to an embodiment in which a retardation film or the like is not provided between the first substrate or the second substrate and the polarizing plate, the effect of the present invention can be obtained by using a retardation film. It is valid. Further, the effects of the present invention are naturally effective even if the constituent members of the dot matrix type liquid crystal display panel used in portable information devices and the like are used.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a display state of a timepiece of the present invention at 1 o'clock.

FIG. 2 is a schematic plan view showing a display state at 1:25 on the timepiece of the invention.

FIG. 3 is a schematic cross-sectional view of the timepiece of the present invention.

FIG. 4 is a plan view showing a liquid crystal display panel used for a timepiece according to the first embodiment of the present invention.

FIG. 5 is an enlarged plan view of a part of a liquid crystal display panel used in a timepiece according to the first embodiment of the present invention.

FIG. 6 is a system block diagram of the timepiece of the present invention.

FIG. 7 is a plan view showing a liquid crystal display panel used for a timepiece according to a second embodiment of the present invention.

FIG. 8 is a plan view showing a liquid crystal display panel used for a timepiece according to a third embodiment of the present invention.

FIG. 9 is a plan view showing a liquid crystal display panel used for a timepiece according to a fourth embodiment of the present invention.

FIG. 10 is a schematic plan view illustrating detection of a hand position of a watch according to a fifth embodiment of the present invention.

FIG. 11 is a signal waveform diagram for detecting a hand position of a timepiece according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st board | substrate 2 1st electrode 5 2nd board | substrate 6 opening 7 liquid crystal layer 8 2nd electrode 9 sealing material 11 1st polarizing plate 12 2nd polarizing plate 13 light source 15 drive part 16 pointer shaft 17 Minute hand 18 Hour hand 19 Pointer shaft hole 21 Print layer 31 Watch case 32 Windshield 33 Back cover 96 Pointer position detection circuit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2F002 AA00 AA02 AA06 AA07 AB02 AB04 AC02 AD06 AD08 AE01 BA06 BA08 EA01 EA04 EB04 ED02 ED05 EE00 EF00 EF01 EH01 EH04 GA04 2F082 AA01 AA06 BB02 BB05 EE03 FF03 HH03 HH04 2H088 EA27 FA19 HA01 MA20

Claims (11)

[Claims] 1. A timepiece having a display portion, comprising a first substrate having a first electrode and a second substrate having a second electrode, wherein the first substrate and the second substrate are provided. Are provided facing each other with a predetermined gap therebetween, and a gap between the first substrate and the second substrate is filled with a liquid crystal layer, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. Constitutes the pixel part by the intersection with
A dot display section in which the pixel sections are arranged in a matrix; and a part of the dot display section includes a first substrate and a second substrate.
A timepiece comprising a liquid crystal display panel having an opening penetrating through the substrate as a display unit. 2. A timepiece having a display portion, comprising: a first substrate having a first electrode; and a second substrate having a second electrode, wherein the first substrate and the second substrate are provided. The substrates are opposed to each other with a predetermined gap therebetween, and a liquid crystal layer is sealed in a gap between the first substrate and the second substrate, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. A pixel portion is formed by an intersection with an electrode, and the pixel portion has a dot display portion in which the pixel portion is arranged in a matrix. A part of the dot display portion penetrates a first substrate and a second substrate. A liquid crystal display panel having an opening that forms a display, wherein the opening is a pointer shaft hole. 3. A timepiece having a display portion, comprising: a first substrate having a first electrode; and a second substrate having a second electrode, wherein the first substrate and the second substrate have a second electrode. The substrates are opposed to each other with a predetermined gap therebetween, and a liquid crystal layer is sealed in a gap between the first substrate and the second substrate, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. A pixel portion is formed by an intersection with an electrode, and the pixel portion has a dot display portion in which the pixel portion is arranged in a matrix. A part of the dot display portion penetrates a first substrate and a second substrate. A liquid crystal display panel having an opening that surrounds the opening, and at least one of the first electrode and the second electrode around the opening bypasses the opening with an electrode width smaller than the electrode width of the pixel portion. A timepiece, which is a display unit. 4. A timepiece having a display portion, comprising: a first substrate having a first electrode; and a second substrate having a second electrode, wherein the first substrate and the second substrate have a second electrode. The substrates are opposed to each other with a predetermined gap therebetween, and a liquid crystal layer is sealed in a gap between the first substrate and the second substrate, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. A pixel portion is formed by an intersection with an electrode, and the pixel portion has a dot display portion in which the pixel portion is arranged in a matrix. A part of the dot display portion penetrates a first substrate and a second substrate. A timepiece, comprising: a liquid crystal display panel having an opening that is configured to terminate at least one of a first electrode and a second electrode around the opening. 5. The liquid crystal display panel has a plurality of openings, and at least one of the first electrode and the second electrode around each of the openings has a detour structure or a terminal structure with a narrow electrode width. The timepiece according to claim 3, wherein: 6. A timepiece having a display portion, comprising: a first substrate having a first electrode; and a second substrate having a second electrode, wherein the first substrate and the second substrate are connected to each other. The substrates are opposed to each other with a predetermined gap, and a liquid crystal layer is sealed in the gap between the first substrate and the second substrate, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. A pixel portion is formed by an intersection with an electrode, and the pixel portion has a dot display portion in which the pixel portion is arranged in a matrix. A part of the dot display portion penetrates a first substrate and a second substrate. An integrated circuit for applying a signal to a pixel portion is mounted on a first substrate disposed on a viewer, and at least one opening is formed on the first substrate.
A timepiece characterized in that a liquid crystal display panel arranged substantially at the center of the outer shape of the substrate is used as a display unit. 7. A timepiece having a display portion, comprising: a first substrate having a first electrode; and a second substrate having a second electrode, wherein the first substrate and the second substrate are connected to each other. The substrates are opposed to each other with a predetermined gap therebetween, and a liquid crystal layer is sealed in a gap between the first substrate and the second substrate, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. A pixel portion is formed by an intersection with an electrode, and the pixel portion has a dot display portion in which the pixel portion is arranged in a matrix. A part of the dot display portion penetrates a first substrate and a second substrate. A liquid crystal display panel having an opening to be used as a display unit, and further, an integrated circuit for applying a signal to a pixel unit is mounted on a first substrate arranged for an observer via a flexible printed board, and the first substrate is mounted on the first substrate. The length from the outer circumference of the flexible printed circuit board to the outer circumference of the
A time shorter than the length from the outer periphery of the substrate to the opening. 8. A timepiece having a display portion, comprising: a first substrate having a first electrode; and a second substrate having a second electrode, wherein the first substrate and the second substrate have a second electrode. The substrates are opposed to each other with a predetermined gap therebetween, and a liquid crystal layer is sealed in a gap between the first substrate and the second substrate, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. A pixel portion is formed by an intersection with an electrode, and the pixel portion has a dot display portion in which the pixel portion is arranged in a matrix. A part of the dot display portion penetrates a first substrate and a second substrate. A liquid crystal display panel having an opening is provided as a display unit, the opening has a pointer axis, and the display content of the dot display is difficult to recognize because the display is shaded by the pointer depending on the position of the pointer on the pointer axis. A timepiece having display content switching means for changing display content in order to prevent such a situation. 9. A timepiece having a display portion, comprising: a first substrate having a first electrode; and a second substrate having a second electrode, wherein the first substrate and the second substrate have a second electrode. The substrates are opposed to each other with a predetermined gap therebetween, and a liquid crystal layer is sealed in a gap between the first substrate and the second substrate, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. A pixel portion is formed by an intersection with an electrode, and the pixel portion has a dot display portion in which the pixel portion is arranged in a matrix. A part of the dot display portion penetrates a first substrate and a second substrate. A liquid crystal display panel having an opening to be used as a display unit, the opening has a pointer axis, and the display content of the dot display prevents the display from being shaded by the pointer depending on the position of the pointer, making it difficult to recognize. Liquid crystal for detecting the position of the pointer. A timepiece comprising a hand detecting means for transmitting a signal between an electrode of a display panel and a hand. 10. A timepiece having a display portion, comprising: a first substrate having a first electrode; and a second substrate having a second electrode, wherein the first substrate and the second substrate have the same structure. The substrates are opposed to each other with a predetermined gap therebetween, and a liquid crystal layer is sealed in a gap between the first substrate and the second substrate, and the first electrode and the second electrode facing each other with the liquid crystal layer interposed therebetween. A pixel portion is formed by an intersection with an electrode, and the pixel portion has a dot display portion in which the pixel portion is arranged in a matrix. A part of the dot display portion penetrates a first substrate and a second substrate. A timepiece comprising: a liquid crystal display panel having an opening; and a printed layer on an observer side around the opening to shield the opening. 11. The liquid crystal display panel according to claim 1, wherein at least a part of the polarizing plate has a reflective polarizing plate in which one polarizing axis is a transmission axis and a substantially perpendicular polarization axis is a reflection axis. The timepiece according to claim 1.