JPH02254420A - Sheet-like liquid crystal display and matrix liquid crystal panel for constituting its display and driving circuit - Google Patents

Abstract

PURPOSE:To connect a matrix liquid crystal panel and a driving circuit so as to be freely attachable and detachable by driving the matrix liquid crystal panel, based on data stored in a memory element, and also, providing connecting electrodes on both matrix liquid crystal panel and driving circuit, respectively. CONSTITUTION:When a line electrode scanning circuit 4 selects successively a line electrode 3, a voltage applied to a row electrode 2 is written successively in the liquid crystal of a part pinched by the row electrode 2 and the column electrode 3. In such a manner, by writing a signal voltage applied to the row electrode 2 in the liquid crystal of the part pinched by its column electrode 2 and the row electrode 3 selected successively, information given to a matrix liquid crystal panel 1 can be displayed. A column electrode driving circuit 4 and a row electrode scanning circuit 5 are, for instance, shift registers formed on the matrix liquid crystal panel 1, operated by a signal applied from an external driving circuit through connecting electrodes 4-1, 4-2, 4-3 and 5-1, 5-2 and 5-3, and drive the column electrode 2 and the row electrode 3, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application] The present invention relates to a sheet-like liquid crystal display in which a matrix liquid crystal panel and all or all of the driving circuits for driving the matrix liquid crystal panel are separable.

[Conventional technology]

As a conventional liquid crystal display with a drive circuit mounted on a matrix liquid crystal panel, the IEICE technical report 198
4, ED 84-72 pp21-26, poly-5L-type (thin film transistor)
Active matrix liquid crystal displays in which X and Y drivers are arranged on a matrix liquid crystal panel are known.

[Problem to be solved by the invention]

In the above conventional technology, the drive circuit including the X and Y drivers configured on the matrix liquid crystal panel has an integrated structure with the matrix liquid crystal panel, and it is impossible to separate the drive circuit and the matrix liquid crystal panel. Met.

An object of the present invention is to provide a sheet-like liquid crystal display in which part or all of a drive circuit and a matrix liquid crystal panel can be separated.

[Means for Solving the Problem] In order to achieve the above-mentioned object, a matrix liquid crystal panel and the matrix 'fF! A connecting tm is provided on both sides of the drive circuit for driving the crystal panel, so that the matrix liquid crystal panel and the drive circuit can be connected to each other in a manner that allows them to be easily separated from each other.

Further, a part of the driving circuit is disposed on the front a matrix liquid crystal panel.

[Effect]

By providing the connection electrode, the matrix liquid crystal panel and the drive circuit can be connected to each other in a removable manner, and the matrix liquid crystal panel and the drive circuit can be separated.

Also, a part of the drive circuit is mounted on the matrix liquid crystal panel! ! [, tl! In this case, it is possible to reduce the number of nIJ connection electrodes for fitting the part of the drive 1 closed and the remaining part of the erroneous drive circuit.

This allows the connection electrodes to be disposed at wider intervals, making attachment and detachment easier.

〔Example〕

Hereinafter, the first real-life example of Book 5i5E14 will be read in its entirety using Figures 1 to 6.

FIG. 1 is a plan view showing a matrix liquid crystal panel in a sheet-like liquid crystal display as a practical example of ^1 of the present invention. In Fig. 1, 1 is a matrix liquid crystal panel;
2 is a column electrode, 3 is a row electrode, 4 is a column electrode drive circuit, 5 is a row electrode scanning circuit, 4-1゜4-2, 11-5 and 5-1
, 5-2 and 5-5 are connection electrodes.

The number of column electrodes 2 and row electrodes 5 is 22! This is a bright electrode, and is arranged so that the column electrode 2 and the row electrode 5 sandwich a liquid crystal layer (not shown). The voltage applied to the column electrode 2 by the column electrode drive circuit 4 is convolved in the liquid crystal placed between the column electrode 2 and the row electrode 5 selected by the row electrode scanning circuit 5. . In other words,? 'The Tt polar staple circuit 4 sequentially selects the row electrodes 3, so that the voltage applied to the column electrodes 2 is sequentially convoluted into the liquid crystal in the part separated by the column W poles 2 and the row electrodes 3. It will be done. In this way, the voltage applied to the pole 2 of the column 11 is spread to the liquid crystal in the part of the column covered by the column electrode 2 and the pole 5 of the jilted row'. , information given to the matrix liquid crystal panel 1 can be displayed.

The column electrode drive circuit 4 and the row electrode scan circuit 5 are, for example, p
-5L, etc., on the matrix liquid crystal panel 1, and the connection terminals are connected to the terminals 4-1 and 4.
External through -2, 4-5 and 5-1, 5-2, 5-5! ℃ operation by signals given from an AA dynamic circuit (not shown), and drive column electrodes 2 and row electrodes 5, respectively.

According to this embodiment, the column electrode drive circuit 4 and the row electrode scan circuit 5 are operated in comparison with the column electrode drive circuit 4 and the row electrode scan circuit 5 that drive the column electrodes 2 and the row electrodes 3, respectively. For external drive circuit and anatomical array electrode drive circuit W14
and an electric wire 4-1 for fitting the row electrode foot circuit 5.
, 4-2, 4-5 and 5-1, 5-2, and 5-5 can be reduced. Therefore, 'rTIJtJ
Self-contained electrodes 4-1, 4-2, 4-5 and 5-1
, 5-2, and 5-5 are fine (no problem occurs), and they can be easily connected to an external drive circuit.

FIG. 2 is a circuit diagram showing a specific example of the structure of the column driving circuit N14 in FIG. 1, and FIG. 3 is a box diagram showing a modified example of the operation of the second circuit. In FIG. 2, 8 is a D flip-flop, 9 is an engineered MOS transistor, and 10 is a multiplier holding device.

The signal V, -3 applied to the wire side 1-1 is applied to the MOS transistor 9'jj! : is applied to the column electrode 2 via.

The signal V4-1 applied to the false positive voltage 2 is held at 1 by the holding valley filQ when the next signal is applied.

1til of MOS transistor 9 is installed in electric wire 4-2.
J# number V4-2 is sealed. MOS) The transistor 9 is, for example, an N-channel MOS transistor, and the connection is connected to the gate terminal via the pole 4-2.
When the control 1N-$1' 4-2 reaches the "B" level, it becomes an on state, and the signal 4-1 applied through the connection gate 4-1 passes through the MOS transistor 9 to the first column electrode 2. is applied to

Connect the connection electrode 4-5 with Ωtsuku f! The signals V4-5 are applied, and the D flip-flop 8 operates at a timing synchronized with the a check signals V, . As a result, the control signal V4-2 applied to the connection electrode 4-2 is sequentially delayed, the operation of the MOS transistor 9 is controlled, and the signal V4-1 applied to the connection electrode 4-1 is delayed. 4 is a circuit diagram showing a specific example of the configuration of the row electrode scanning circuit 5 in FIG. 1, and the fifth factor is a modified diagram showing an example of the operation technique of the circuit shown in FIG. In the fourth cause, 11 is D frig fg a kug,
12 is a MOS transistor.

The voltage applied from the track-laying electrode 5-1 is, for example, '1
．． The source storm pressure (MOS) also drives the row electrodes 3 through the transistors 12. MO5) The transistor 12 is
For example, it is an N-channel MOS transistor, and the selection signal I applied from the connection electrode 5-2 is -2 or 'E'.
When the level is reached, it becomes ON. As a result, the voltage applied from the side pillow 5-1 is enriched in the additional voltage 5-1.

From the pillow electrode 5-5, the IGO electrode foot pressure signal V, -8?-
``When the sword is 0, D flip 70g 11 or cold 1J kiki is activated at the timing synchronized with 4B side's -s. As a result, the voltage applied from the inflatable pile electrode 5-2 is
The numeral is delayed by -2 or 1 #4, and the MOS transistors 12 are sequentially turned on, and each row has 4 poles 5 or 1t.
t will be rejected.

Condition g.
This is a diagram.

In the diagram, 16 is a memory, 14 is a column drive control g generation circuit, 15 is a clock signal generation circuit, 16 is a counter, 17 is a row drive control note generation circuit, Vcc is a t source, 150 is a data input terminal.

Data input from the data input terminal 130 is stored in the memory 15. The data written in the memory 16 is sequentially read out according to the clock signal applied from the clock generator circuit 15, and is read out γ in sequence in accordance with the clock signal applied from the clock generator circuit 15.
is applied to the matrix liquid crystal panel 1 shown in FIG. At the same time, the cutting 6C Q-tsuku signal generation cycle Ayu 15 to the paste U-tsuku number 18 are also applied to the column drive control number 16 generation circuit 14, which consists of a counter, for example, and is triggered at the timing of tcIJM at 02218. A drive control signal is output and applied to the 7-trix liquid crystal panel 1 of FIG. 4 billion for pillows
As explained above, the signals for controlling the operation of the column-polar drive ports 4 of FIG. 2 are applied to the matrix liquid crystal panel 1 of FIG.

In addition, a counter 16 and a row drive control signal generation circuit 17
is a circuit that generates a signal for controlling the operation of the circuit 5 shown in FIG.

The counter 16 counts the clock signal issued from the clock signal generation circuit 15, and performs the clock signal at a timing synchronized with the clock signal. Outputs Tashoshoku Hakugo. Furthermore, the above-mentioned electrode running 'i signal is connected to the row instigation side #signal generation U path 1.
7 is also applied. The row drive control 1g%i% main circuit 17 is, for example, a counter;
The row electrode selection signal is outputted at a timing synchronized with the row electrode scanning circuit that outputs the row electrode selection signal.

By the operation described above, a signal for controlling the operation of the polar scanning circuit 5 shown in FIG. 4 is applied to the matrix liquid crystal panel 1 shown in FIG. 1.

Next, FIG. 7 shows external appearances of the matrix liquid crystal panel shown in FIG. 1 and the external drive circuit shown in FIG. 6.

As shown in FIG. 7, the external drive circuit 18 and the matrix liquid crystal panel 1 have a structure that allows for easy connection and separation. It can be displayed on the matrix liquid crystal panel 1 for confirmation.

FIG. 8 is a plan view showing a matrix liquid crystal panel in a sheet-like liquid crystal display as a second embodiment of the present invention.

In this embodiment, the configuration of the external drive circuit shown in FIG. 6 is used.

In the matrix liquid crystal panel of this embodiment, as shown in FIG. For the row electrode scanning circuit 5 or, respectively, connection leakers 4-1, 4-2, 4-55-1.5-2, 5
-5 and the external drive circuit shown in FIG. 6 or other column electrode drive circuit 4 and other row electrode scanning circuit
are sequentially performed from the previous column electrode drive circuit 4 and the previous row electrode scanning circuit 5 via the wiring formed on the matrix liquid crystal panel 1, respectively. This makes each column 1
! It is not necessary to provide electrodes for connection with the external drive circuit on the polar line drive w54 mother and valley line electric foot circuit 5@, and the connection tm
can be made much smaller than in the case of the matrix liquid crystal panel shown in FIG.

FIG. 9 is a sectional view showing a cross section of a matrix liquid crystal panel in a sheet-like liquid crystal display as a third embodiment of the present invention, and FIG. 10 is an external drive in a sheet-like liquid crystal display as a fifth embodiment of the present invention. 10 showing the circuit
Figure 22.

In the nest 9 diagram, 110 is vj! It is a universal or negative cholesteric liquid crystal. Also, in the north diagram 10, 100 is a high frequency generation circuit and 101 is a changeover switch.

In the ninth factor, (α) indicates the state of the g-crystal 110 before voltage is applied, and in this state, the liquid crystal 110
The arm axis is perpendicular to the column electrode 2 and the row electrode 5,
Liquid crystal 110 is transparent. FIG. 9 (state of αJ of 110) A dynamic scattering state as shown in FIG. 9 is obtained. In this state, the liquid crystal 110 is opaque.

Therefore, first, in the external drive circuit shown in FIG.
The output of the memory 13 is connected to the switch 101 and the connection electrode 4.
-1 to the matrix liquid crystal panel 1 shown in FIG. Then, a voltage is applied to the liquid crystal 110 via the column electrode 2 and the row electrode 5. Therefore.

As a result, matrix liquid crystal panel 1 display is performed.

On the other hand, the liquid crystal 110 in the state shown in FIG. 9(α) continues to maintain the quadruple state even after the voltage application is stopped. Therefore, once the display is performed on the matrix liquid crystal panel 1, the displayed content can be maintained without being connected to the external drive circuit shown in FIG.

Long time no see, Figure 9! For the liquid crystal 110 in the At state, the 10th
Switch 1 to select the output of the high frequency generation circuit 100 shown in the figure.
When the voltage is applied through the terminal 01 and the connecting terminal 4-1, the liquid crystal 110 returns to the state shown in FIG. 9(α) and becomes transparent. That is, this allows the display content to be reduced to Y0.

11 is a circuit diagram showing a specific configuration example of the column electrode drive circuit 4 for driving the matrix liquid crystal panel in FIG. 9, and FIG. 12 is the same (a circuit diagram showing a specific configuration example of the row electrode scanning circuit 5). The circuits in FIGS. 11 and 12 differ from the circuits in FIGS. 2 and 4 in that D flip-flops 80 and 111 having set terminals are used instead of D flip-flops 8 and 9. It is a point.Previous B self D7')
For example, the tabs 7a and 80 and 111 are connected to the set terminal S.
By applying a B° level signal, the output becomes °B°.
It is fixed at the level. Thereby, by applying a signal of 1B level to the set terminals of the D-flip tubes 80 and 111, all the liquid crystals driven by the column electrodes 2 and row electrodes 3 can be simultaneously traced. Therefore, by applying the output of the high frequency generation circuit 100 as shown in Figure 10 to a matrix liquid crystal panel in which the liquid crystal 110 is in a state as shown in Figure 9+AI, the displayed contents are erased at once. can do.

FIG. 13 is a partially cutaway perspective view of a drive circuit as a fourth embodiment of the present invention.

In FIG. 15, 2a is a lower plate, and 50 is an upper plate.

This embodiment includes a lower plate 20 having column electrodes 2 and a column electrode driving circuit 4 shown in FIG. 11, and an upper plate 50 having row TL poles 3 and a row electrode scanning circuit 5 shown in FIG. 1
0 is integrated with the external drive circuit shown in FIG. Note that in FIG. 15, the external drive circuit shown in FIG. 10 is omitted.

In the drive circuit having the above-described general structure, the cholesteric liquid crystal 1 shown in FIG.
By incorporating a liquid crystal panel consisting of only 10 liquid crystal layers, it is possible to display on the liquid crystal panel or erase the displayed content. Moreover, the liquid crystal panel and the drive circuit shown in FIG. 16 are independent of each other.

In addition, by using a ``''C transparent plate as the upper plate 30, it is possible to confirm the display FF-3 on the liquid crystal panel.

FIG. 14 is a plan view showing a matrix liquid crystal panel as a fifth embodiment of the present invention.

In Fig. 14, 200 is a high resistance element, and 201 is a common electrode.

In this embodiment, unlike the matrix liquid crystal panel 1 shown in Fig. 1 or Fig. 8, the column electrode driving circuit 4 and the row electrode scanning circuit 5 consisting of a shift register are not heated. Therefore, this embodiment is not driven by an external driving circuit as shown in FIG. 6, but by an external driving circuit including a shift register.

When the matrix liquid crystal panel 1 in this embodiment is connected to and driven by an external drive circuit, the output impedance of the external drive circuit is set to low impedance, and the impedance of the high resistance element 200 is set to low impedance.

By making the output impedance of the external drive circuit sufficiently large to about 10 degrees, it is possible to ignore the influence of temperature on each column electrode 2 and valley row electrode 5 of the common 'RL101. can.

When the liquid crystal panel 1 is removed, each column electrode 2 and each row electrode 3 are brought into contact with the common electrode 2 through a high resistance element 200. Therefore, all the column electrodes 2 and row gas are at lllllllc level. Thereby, the frame 1 of the matrix liquid crystal panel 1 can be prevented from being destroyed.

FIG. 15 is a plan view showing a matrix liquid crystal panel as a sixth embodiment of the present invention.

In FIG. 15, 202 is a switch.

This embodiment differs from the matrix liquid crystal panel shown in FIG. 14 in that a switch 202 is used instead of the high resistance element 200. The switch 202 is open when the external driving circuit and the matrix liquid crystal panel 1 are engaged, and the valley electrodes 2 and the row electrodes 5 are separated from each other. On the other hand, when the separate matrix liquid crystal panel 1 is separated from the external drive circuit, the switch 202 is closed and all the column electrodes 2 and row electrodes 3 have the same potential. This can prevent the matrix liquid crystal panel 1 from being damaged.

FIG. 6 is a cross-sectional view showing an example.

In Figure 16, 2α is the connection electrode on the matrix liquid crystal panel 1 side, 2b is the connection electrode on the external SLK dynamic circuit side, 1
μ is an upper plate of the matrix liquid crystal panel 1, 1cL is a lower plate of the matrix liquid crystal panel 1, and 15 is a liquid crystal sealing portion.

In FIG. 16, (α1 indicates a state in which the matrix liquid crystal panel 1 and the external drive circuit are connected.

In this state, the switch 20 connected to the common electrode 201
2 is apart from the connection electrode 2α.

Next, when the matrix liquid crystal panel 1 is separated from the external drive circuit, the switch 202 comes into contact with the connection electrode 2α. By the action of the leaf spring, the common electrode 201 and the connection electrode 2cL can be switched to "C!" via the switch 202 in the same manner that the matrix liquid crystal panel 1 is disconnected from the external drive circuit.

Now, in each of the embodiments after the embodiment of Audience 2 which has been bottomed out above, the external appearance is the same as that of the first embodiment shown in FIG. 7, except for the fourth embodiment.

Therefore, next, an embodiment whose appearance is different from that shown in FIG. 7 will be described.

FIG. 17 is a perspective view showing the appearance of a sheet-like liquid crystal display as a seventh embodiment of the present invention.

The outer S drive circuit 19 in this embodiment has a configuration that allows a plurality of matrix liquid crystal panels 1 to be connected in a booklet shape. With this, for example, the data recorded on the floppy disk 20 is read by the external drive S1G circuit 19 and displayed on each matrix liquid crystal panel 1 arranged in the form of a booklet, so that information on the grand prize can be easily searched. can do.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to easily separate a matrix liquid crystal panel and part or all of the drive circuit that drives the matrix liquid crystal panel.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a plan view showing a matrix liquid crystal panel in a sheet-like liquid crystal display as a first embodiment of the present invention, and FIG. 2 is a specific configuration of the column electrode drive circuit in FIG. 1. A circuit diagram showing an example, Figure 5 is a modified diagram showing an example of the operation of the circuit in Figure 2, and Figure 4 is a circuit diagram showing a specific example of the configuration of the row electrode scanning circuit in Figure m1. 5 is a waveform diagram showing an example of the operating waveforms of the circuit in FIG. 4, FIG. 6 is a block diagram showing an external drive circuit in a sheet-like liquid crystal display as the first embodiment of the present invention, and FIG. FIG. 8 is a perspective view showing the appearance of a sheet-like liquid crystal display as a first embodiment of the present invention; FIG. 8 is a plan view showing a matrix liquid crystal panel in a sheet-like liquid crystal display as a second embodiment of this example; The figure is a sectional view showing the # side of a matrix liquid crystal panel in a sheet-like liquid crystal display as a third embodiment of the present invention, and Figure 10 is an external view of a sheet-like liquid crystal display as a third example of the present invention. A block diagram showing a drive circuit, FIG. 11 is a circuit diagram showing a specific configuration example of a column electrode drive circuit for driving the matrix liquid crystal panel in FIG. 9, and FIG. Figure 13 is a partially cutaway perspective view of a drive circuit as a fourth embodiment of the present invention. FIG. 15 is a plan view showing a matrix liquid crystal panel 2 as an example of the nest 6 of the present invention, and FIG. 16 is a specific configuration of the switch in FIG. 15. A cross-sectional view showing an example,
FIG. 17 is a perspective view showing a sheet-like liquid crystal display according to a seventh embodiment of the present invention. Explanation of symbols 1...Matrix liquid crystal panel 2...Column' electrode 5...h''8L8L 4-column electrode drive circuit 4-1 to 4-3...Connection electrode 5...Row Scanning circuits 5-1 to 5-5... Connection electrodes 8.11... D flip 7a tabs 9.12... MOS transistor 10... Holding capacitor JIt15... Memory 14... Column drive Control signal generation circuit 15...Clock signal generation circuit 16...Counter 17...Row drive signal destination generation circuit 18.19...wA!IjJ circuit 10 ports...
Sho Shuhe Kosei circuit 200... High resistance element 201.
・・Common pole 202...Switch Sanskrit 1 Figure Punishment 2 Figure Helmet 3 Figure 6 Figure Closed 4 Figure Closed 5 Also Porridge Wa Figure Closed δ Figure 411 Anti-Gan 12 Figure 11υ Party 10 Figure Banknote 15 Figure Congee 15 Figure Closed 16 anti(α) (b)

Claims (1)

[Scope of Claims] 1. A sheet-like liquid crystal display consisting of a matrix liquid crystal panel and a drive circuit that drives the matrix liquid crystal panel, wherein the drive circuit stores data created by a memory element and an external system such as a word processor. a data input terminal for inputting the data into the memory element, the matrix liquid crystal panel is driven based on the data stored in the memory element, and a connection electrode is provided to both the matrix liquid crystal panel and the drive circuit. 1. A sheet-like liquid crystal display characterized in that the matrix liquid crystal panel and the drive circuit can be detachably connected to each other by providing the matrix liquid crystal panel and the drive circuit, respectively. 2. In the sheet-like liquid crystal display according to claim 1, the matrix liquid crystal panel includes column electrodes and row electrodes, a part of the drive circuit is disposed on the matrix liquid crystal panel, and the connection electrode is arranged on the matrix liquid crystal panel. The number of connection electrodes is made smaller than the number of column electrodes and row electrodes by respectively disposing them in a part of the drive circuit and the rest of the drive circuit arranged on the matrix liquid crystal panel. A sheet-like liquid crystal display. 3. A sheet-like liquid crystal display comprising a matrix liquid crystal panel and a drive circuit for driving the matrix liquid crystal pulses, wherein the drive circuit is equipped with a reading device for reading information recorded on a memory medium such as a floppy disk, The matrix liquid crystal panel is driven based on the information read by the reading device, and by providing a plurality of connection means in the drive circuit, a plurality of matrix liquid crystal panels are simultaneously connected to the drive circuit in a booklet form. A sheet-like liquid crystal display characterized in that the matrix liquid crystal panels can be driven simultaneously. 4. A sheet-like liquid crystal display consisting of a matrix liquid crystal panel and a drive circuit that drives the matrix liquid crystal panel, wherein the matrix liquid crystal panel is provided with column electrodes and row electrodes, and the drive circuit is provided with a column electrode and a row electrode. a shift register for driving a shift register, a memory circuit for storing data, a high-frequency generation circuit for generating a high-frequency signal, and switching between the data read from the memory circuit and the high-frequency signal generated by the high-frequency generation circuit to the shift register. The matrix influence panel and the drive circuit can be detachably connected to each other by providing a changeover switch for applying the voltage and providing connection electrodes on both the matrix liquid crystal panel and the drive circuit, respectively. A sheet-like liquid crystal display characterized by: 5. A sheet-like liquid crystal display consisting of a matrix liquid crystal panel and a drive circuit that drives the matrix liquid crystal panel, wherein the matrix liquid crystal panel has column electrodes, row electrodes, and a shift register that drives the column electrodes and row electrodes. The drive circuit includes a memory circuit that stores data, a high frequency generation circuit that generates a high frequency signal, and a high frequency signal that switches between the data read from the memory circuit and the high frequency signal generated by the high frequency generation circuit. and a changeover switch for applying an electric voltage to a shift register, and by providing connection electrodes on both the matrix liquid crystal panel and the drive circuit, the matrix influence panel and the drive circuit can be detachably connected to each other. A sheet-like liquid crystal display characterized by the following features: 6. A column electrode plate having a column electrode and a row electrode plate having a row electrode, the column electrode plate and the row electrode plate facing each other so that the column electrode and the row electrode are substantially perpendicular to each other. A drive circuit characterized in that a liquid crystal panel is arranged between the column electrode plate and the row electrode plate so that the liquid crystal panel can be detachably held therebetween. 7. In a matrix liquid crystal panel comprising a plurality of column electrodes, a plurality of row electrodes, and a common electrode commonly connected to all of the column electrodes and row electrodes, the common electrode is connected to the column electrodes and the row electrodes. A matrix liquid crystal panel connected to each of the above through a high resistance element having a relatively high resistance value. 8. In the matrix liquid crystal panel according to claim 7,
A switch that short-circuits or opens between the common electrode and each of the column and row electrodes, instead of a high resistance element connected between the common electrode and each of the column and row electrodes. A matrix liquid crystal panel characterized by being provided with.