KR20070032239A - Liquid crystal drive controller, liquid crystal panel module, and portable terminal system - Google Patents

Abstract

The present invention eliminates the lack of margin due to wiring resistance. First lines L13 and L14 drawn out from the input terminal of the strobe comparator 51, first external terminals T13 and T14 coupleable to the strobe transmission path, and a second drawn out from the strobe offset current source 54. Lines L11 and L12 and second external terminals T11 and T12 that can be coupled to the strobe transmission path are provided. The first line and the first external terminal and the second line and the second external terminal are electrically insulated on the liquid crystal drive control device. Outside the liquid crystal drive control device, the first wirings L21 and L22 and the second wirings L19 and L20 are commonly connected to the strobe terminals T17 and T18 and the first wiring is not included in the strobe offset current path. By doing so, the lack of margin is eliminated.

Microcomputer, portable terminal, glass board, strobe transmission path, data terminal

Description

Liquid crystal drive controller, liquid crystal panel module and mobile terminal system {LIQUID CRYSTAL DRIVE CONTROLLER, LIQUID CRYSTAL PANEL MODULE, AND PORTABLE TERMINAL SYSTEM}

BRIEF DESCRIPTION OF THE DRAWINGS The structural example circuit diagram of the principal part in the liquid crystal drive control apparatus which concerns on this invention.

Fig. 2 is a block diagram of an overall configuration example of a portable telephone which is an example of a portable terminal system including the liquid crystal drive control device.

Fig. 3 is a block diagram showing an example of the configuration of main parts of the mobile telephone.

Fig. 4 is a block diagram of an overall configuration of the liquid crystal drive control device.

Fig. 5 is a circuit diagram of a configuration example of a device to be compared with a main part in a liquid crystal drive control device according to the present invention.

6 is a timing diagram of the main operation of the apparatus shown in FIG. 5;

Fig. 7 is a circuit diagram of a configuration example of a device to be compared with a main part in a liquid crystal drive control device according to the present invention.

8 is a circuit diagram of another configuration example of a main part in the liquid crystal drive control device according to the present invention.

9 is a circuit diagram of another configuration example of a main part in the liquid crystal drive control device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: mobile phone

2: antenna

3: high frequency interface unit

4: base band

5: microcomputer

6: Specific Use Semiconductor Devices

7: speaker

8: microphone

9: voice interface circuit

10: liquid crystal drive control device

11: liquid crystal display

20: host interface circuit

21: interface controller

22: timing controller

23: Source Driver

42: write data register

43: display memory

45: read data register

70: glass substrate

71: printed wiring board having plasticity

300: liquid crystal panel module

RL1, RL2: load resistance

L13, L14: first line

L11, L12: second line

L15, L16: Third Line

L17, L18: 4th line

L21, L22: first wiring

L19, L20: second wiring

L23, L24: Third wiring

L29, L30: fourth wiring

L25, L26: strobe transmission line

L27, L28: data transmission line

T13, T14: first external terminal

T11, T12: second external terminal

T15, T16: third external terminal

T17, T18: Strobe Terminal

T19, T20: data terminal

<Patent Document 1> Japanese Patent Application Laid-Open No. 2001-222276

<Patent Document 2> Japanese Patent Application Laid-Open No. 2004-531916

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal drive control device, a liquid crystal panel module, and a portable terminal system having the same, and for example, relates to a technology effective for application to a portable telephone.

A mobile phone serving as an example of a mobile terminal system includes a high frequency interface unit, a baseband unit, a liquid crystal drive control device, a liquid crystal display, a microphone, a speaker, and the like. When a folding structure is adopted for the case which accommodates these circuits, a pair of case is couple | bonded so that opening and closing is possible with a hinge part. When the liquid crystal drive control device and the liquid crystal monitor are arranged in one case, the baseband portion for giving display commands or display data to the liquid crystal drive control device is often arranged in the other case together with the high frequency interface portion. When the base band portion and the liquid crystal drive control device are disposed in separate cases, a plurality of signal lines connecting both of them pass through the hinge portion.

The wiring connecting the base band portion and the liquid crystal drive control device tends to increase as the liquid crystal display driven by the liquid crystal drive control device becomes higher precision and the display color increases. Furthermore, due to the high functionality of the mobile phone, when a sub-display constituting a monitor screen of a moving picture or a still picture, etc., and peripheral devices such as a camera flash light and an LED for illumination display are arranged in the same case as the liquid crystal display, The number of interface signal lines further increases for control. In a conventional liquid crystal drive control device, as described in Patent Document 1, display data and commands are supplied from a baseband portion through a parallel bus. In addition, a packet of a predetermined format is often used for supplying data or commands. In addition to those described in Patent Document 2, packets of various uses are used.

The liquid crystal panel module includes a liquid crystal drive control device mounted on a transparent substrate such as a glass substrate on which a liquid crystal display (liquid crystal display) capable of displaying information is formed. When such a liquid crystal panel module is used, serial transmission based on the VESA standard has begun to be used as a logic signal transmission technique between the baseband portion and the liquid crystal drive control apparatus on a glass substrate in order to reduce the number of wirings. The inventor of the present invention examined serial transmission based on the VESA standard as shown in FIG. The baseband portion 4 and the liquid crystal drive control device 10 are combined by a serial transmission path based on the VESA standard. The liquid crystal drive control device 10 includes a host interface circuit 20, which includes a strobe comparator 51, a data comparator 52, a data output buffer 53, and an offset current source ( 54). The strobe signal is transmitted from the baseband portion 4 to the liquid crystal drive control device 10, and the data signal is transmitted in both directions. When the comparator start signal CMP-ST is transitioned from the low level to the high level by the baseband unit 4, the strobe comparator 51 and the data comparator 52 are activated. The current is differentially output from the baseband section 4, and the strobe comparator 51 detects a logic level (high level or low level) with a potential difference generated in the load resistor RL1 provided in the transmission path, and performs signal transmission. In the above configuration, when the transition from the standby mode to the normal operation mode, the strobe offset current Iof is applied to the load resistor RL1 by the offset current source 54 in order to prevent malfunction when noise is superimposed on the strobe signal STR. A predetermined offset potential 63 is generated between the terminals of the load resistor RL1. Since the offset potential 63 is generated, the margin for noise is expanded, so that the strobe comparator 51 is difficult to malfunction even when noise is superimposed on the transmission path of the strobe signal. The current signal supplied from the baseband unit 4 as a strobe signal cancels the strobe offset current Iof and is set to exceed the threshold of the strobe comparator 51.

However, according to the inventor's examination, in the serial transmission based on the VESA standard as shown in FIG. 5, as shown in FIG. 7, the liquid crystal drive control device 10 is mounted on the glass substrate 70. In one case, it was found that the influence by the variation of the wiring resistance on the glass substrate 70 was large. This will be described in detail below.

When the strobe offset current Iof is supplied by the offset current source 54, the strobe comparator differential input potential difference Vsc is expressed by the following equation.

Vsc = -Iof × (R1 + R2 + 100)

The differential potential difference Vstb caused by the output current Is of the baseband section 4 is expressed by the following equation.

Vstb = Is × 100

If the potential obtained by adding the strobe comparator differential input potential difference Vsc by the strobe offset current Iof to the differential potential difference Vstb by the output current Is of the baseband unit 4 exceeds the offset potential difference Vstbof of the strobe comparator, the strobe comparator 51 The strobe signal from the baseband section 4 is output to the output of the? If this is expressed by an equation, it becomes as follows.

Vstb-Vsc = Is × 100-Iof × (R1 + R2 + 100)

(Is-Iof) × 100-Iof × (R1 + R2)> Vstbof

When there is no wiring resistance on the glass substrate 70, that is, when R1 = R2 = 0, Equation 4 becomes as follows.

Vstb-Vsc = (Is-Iof) × 100> Vstbof

Equation (4) includes a variable term (Iof x (R1 + R2)) with respect to Equation 5, which causes a margin shortage. In order to eliminate this lack of margin, the following methods (A) and (B) are considered.

(A) By reducing the resistances R1 and R2, parallel wiring is enabled by increasing the number of input pads of the strobe comparator of the liquid crystal driver.

(B) In Equation 4, the fluctuations of Is and Iof are suppressed to operate even if a variable term (Iof x (R1 + R2)) is included.

However, in the case of (A), an increase in the number of pads for enabling parallel wiring may greatly increase the chip size of the liquid crystal drive control device 10. In addition, in the case of (B), it is necessary to increase the absolute value accuracy of the output current, and since such a circuit is inevitably complicated and large in size, the chip size of the baseband portion 4 or the liquid crystal drive control device 10 is increased. There is a fear of causing a significant increase.

It is an object of the present invention to provide a technique for eliminating margin shortage due to wiring resistance without entailing a significant increase in chip size.

The above and other objects and novel features of the present invention will become apparent from the description of the specification and the accompanying drawings.

Brief descriptions of representative ones of the inventions disclosed herein are as follows.

That is, by supplying a predetermined offset current to the strobe comparator for acquiring the strobe signal indicating the validity of the data transmitted through the data transmission path, and the load resistance provided in the strobe transmission path that enables the transmission of the strobe signal, A liquid crystal drive control device having a strobe offset current source for generating a predetermined offset potential at an input terminal of the strobe comparator, the first line drawn from an input terminal of the strobe comparator and the first line; A first external terminal coupled to the strobe transmission path, a second line drawn from the strobe offset current source, and a second external terminal capable of coupling the second line to the strobe transmission path, the first line and the A first external terminal, the second line and the second external terminal , Are electrically isolated on said liquid crystal drive controller.

According to the above means, since the second line and the second external terminal and the first line and the first external terminal are electrically insulated, the first wire and the second wire are connected to the strobe terminal outside the liquid crystal drive control device. By common connection, it is possible to prevent the first wiring from being included in the path of the strobe offset current by the strobe offset current source. Thereby, in the system provided with the said liquid crystal drive control apparatus, the margin shortage resulting from the wiring resistance on a transparent board | substrate can be eliminated.

At this time, a data comparator for acquiring data transmitted through the data transmission path, a third line drawn out from an input terminal of the data comparator, and a third that can couple the third line to the data transmission path. An external terminal, a data driver for externally outputting data, a fourth line drawn out from an output terminal of the data driver, and a fourth external terminal capable of coupling the fourth line to the data transmission path; The third line, the third external terminal, and the fourth line and the fourth external terminal can be electrically insulated on the liquid crystal drive control device.

The liquid crystal drive as the liquid crystal drive unit when the liquid crystal panel module comprises a transparent substrate provided with a liquid crystal display unit for enabling information display and a liquid crystal driver mounted on the transparent substrate and capable of driving the liquid crystal display unit. The control device can be applied.

In this case, the transparent substrate may include a strobe terminal to which the strobe transmission path is coupled, the strobe terminal, a first wiring for coupling the first external terminal in the liquid crystal drive control device, and the first wiring. Instead, a second wiring for coupling the strobe terminal and the second external terminal in the liquid crystal drive control device is formed.

In the transparent substrate, the strobe terminal to which the strobe transmission path is coupled, the strobe terminal, first wiring for coupling the first external terminal in the liquid crystal drive control device, and not through the first wiring, Second wiring for coupling the strobe terminal and the second external terminal in the liquid crystal drive control device, a data terminal to which the data transmission path is coupled, the data terminal, and the third in the liquid crystal drive control device. A third wiring for coupling an external terminal and a fourth wiring for coupling the data terminal and the fourth external terminal in the liquid crystal drive control device without the third wiring are formed.

In addition, the transparent substrate may include a strobe terminal to which the strobe transmission path is coupled, a first wiring for coupling the strobe terminal to the first external terminal in the liquid crystal drive control device, and an external portion of the liquid crystal panel module. An offset terminal coupled to the strobe transmission path and a second wiring for coupling the offset terminal and the second external terminal in the liquid crystal drive control device can be formed without passing through the first wiring.

A portable terminal system can be configured by providing a liquid crystal panel module configured as described above.

<Example>

2 shows a mobile phone which is an example of a mobile terminal system including a liquid crystal drive control device according to the present invention. This cellular phone 1 is configured as follows.

The received signal of the radio band received by the antenna 2 is transmitted to the high frequency interface unit (RFIF) 3. The received signal is converted into a low frequency signal by the high frequency interface unit 3 and demodulated, and is converted into a digital signal and supplied to the baseband unit BBP 4. The baseband unit 4 performs channel codec processing using a microcomputer (MCU) 5 or the like to release concealment of the received digital signal and perform error correction. Then, the specific use semiconductor device (ASIC) 6 is used to divide it into communication data such as necessary control data for communication and compressed voice data. The control data is transmitted to the MCU 5, and the MCU 5 performs communication protocol processing and the like. The audio data extracted by the channel codec process is expanded using the MCU 5, and the audio data is converted into an analog signal by the voice interface circuit (VCIF) 9 and reproduced as audio from the speaker 7. In the transmission operation, the voice signal input from the microphone 8 is converted into a digital signal by the voice interface circuit 9, filtered using the MCU 5 or the like, and converted into compressed voice data. The ASIC 6 synthesizes the compressed voice data and the control data from the MCU 5 to generate a transmission data string, and uses the MCU 5 to add error correction / detection codes and concealment codes to the transmission data. Create The transmission data is transformed by the high frequency interface unit 3, the converted transmission data is converted into a high frequency signal, amplified, and transmitted as a radio signal from the antenna 2.

The MCU 5 issues display commands, display data and the like to the liquid crystal drive control device (LCDCNT) 10. As a result, the liquid crystal drive control device 10 controls the liquid crystal display unit 11 to display an image. The MCU 5 includes circuit units such as a central processing unit (CPU) and a digital signal processing processor (DSP). The MCU 5 can be divided into a baseband system processor which is solely responsible for the baseband system processing for communication, and an application processor which is responsible only for additional function control such as display control and security control. The LCDCNT 10, the ASIC 6, and the MCU 5 are not particularly limited, but are each constituted by individual semiconductor devices.

3 shows the configuration of main parts of the mobile phone 1.

The liquid crystal drive module 10 and the liquid crystal display unit 11 are formed on a transparent substrate, for example, a glass substrate 70, whereby the liquid crystal panel module 300 is obtained. Wiring for coupling the liquid crystal drive control device 10 and the liquid crystal display unit 11 is formed of a transparent electrode film. The base band part 4 and the glass substrate 70 are joined by the printed wiring board 71 which has plasticity. The transparent electrode film on the glass substrate 70 is, for example, a material called indium tin oxide (ITO), and the resistance value of the wiring thereby is higher than the resistance of the wiring made of copper or the like as the printed wiring board 71. Much bigger.

4, the structural example of the said liquid crystal drive control apparatus 10 is shown.

The baseband unit 4 transmits a command or data to the host interface circuit 20 using a packet of a predetermined format. The host interface circuit 20 receives commands and display data from the differential terminal DATA ±. The strobe signal indicating the validity of this command and display data is received from the differential terminal STB ±. The interface controller 21 controls the operation of the host interface circuit 20 and decodes the command address to generate a register selection signal or the like, or the display memory (GRAM) 43 based on the address information of the data packet. Addressing is performed. At this time, if the access instruction by the command data is a write operation to the display memory 43, the data of the data packet is supplied to the write data register (WDR) 42 via the bus 41, and the display memory is adjusted in timing. (GRAM) 43 is stored. The display data is stored in display frame units or the like, for example. If the access instruction by the command data is a read operation to the display memory 43, the data stored in the display memory 43 is read into the read data register (RDR) 45 and can be supplied to the host device. When the command data register receives the display command, the display memory 43 performs a read operation synchronized with the display timing. Timing control (TCNT) 22 performs timing control of reading and display. Display data read from the display memory 43 in synchronization with the display timing is supplied to the source driver DRV 23 through the latch circuit. The liquid crystal display unit 11 to which the liquid crystal drive control device 10 is subjected to driving control is constituted by a dot matrix TFT (thin film transistor) liquid crystal panel, and includes a plurality of source electrodes as signal electrodes and a plurality of gates as scan electrodes. An electrode is provided as a drive terminal. The liquid crystal display portion 11 is formed on a transparent substrate such as a glass substrate. The liquid crystal drive control device 10 is mounted on this transparent substrate. The liquid crystal display unit 11 and the liquid crystal drive control device 10 are provided as a liquid crystal panel module. The source driver 23 drives the source electrode of the liquid crystal display 11 by the drive terminals S1-720. The drive level of the drive terminals S1-720 is performed using a predetermined gray scale voltage.

FIG. 1 shows a configuration example of the host interface circuit 20 (see FIG. 4) and the connection state of the host interface circuit 20 and the baseband section 4 in the liquid crystal drive control device 10.

The liquid crystal drive control device 10 is formed on one semiconductor substrate such as a single crystal silicon substrate by a known semiconductor integrated circuit manufacturing technique, and includes first external terminals T13 and T14 and second external terminals T11 and T12 and a third external. Terminals T15 and T16 are provided. This liquid crystal drive controller 10 is mounted on a glass substrate 70 on which a liquid crystal display portion 11 (see FIG. 3) is formed. The glass substrate 70 is provided with strobe terminals T17 and T18 and data terminals T19 and T20 that enable electrical coupling of the liquid crystal drive control device 10. Terminals T17 and T18 are coupled to the differential output terminal of the strobe output buffer 401 in the baseband section 4 via the strobe transmission paths L25 and L26, respectively. A load resistor (for example, 100?) RL1 is connected to the strobe transmission paths L25 and L26. The terminals T19 and T20 are coupled to the differential output terminal of the data output buffer 402 and the data input buffer 403 in the baseband section 4 through the data transmission paths L27 and L28, respectively. A load resistor (for example, 100?) RL2 is connected to the data transmission paths L27 and L28.

The host interface circuit 20 includes a strobe comparator 51, a data comparator 52, a data output buffer 53, and an offset current source 54. The strobe signal is transmitted from the baseband portion 4 to the liquid crystal drive control device 10, and the data signal is transmitted in both directions. When the comparator start signal CMP-ST is transitioned from the low level to the high level by the baseband unit 4, the strobe comparator 51 and the data comparator 52 are activated. The current is differentially output from the baseband section 4, and the strobe comparator 51 detects a logic level (high level or low level) with a potential difference generated in the load resistor RL1 provided in the transmission path and performs signal transmission.

The strobe comparator 51 has two input terminals (+) and (-) for differential input. The first lines L13 and L14 are drawn out from two input terminals (+) and (-) of the strobe comparator 51, and the first lines L13 and L14 are coupled to the first external terminals T13 and T14. The first external terminals T13 and T14 are coupled to the strobe terminals T17 and T18 through the first wirings L21 and L22.

The offset current source 54 comprises a constant current source 75, 76 and a switch 73, 74. In the state where the switches 73 and 74 are turned on, the strobe offset current Iof can be supplied by the constant current sources 75 and 76. The second lines L11 and L12 are drawn out from the offset current source 54, and the second lines L11 and L12 are coupled to the second external terminals T11 and T12. The second external terminals T11 and T12 are then coupled to the strobe terminals T17 and T18 through the second wirings L19 and L20. In this case, the first lines L13 and L14 and the first external terminals T13 and T14 and the second lines L11 and L12 and the second external terminals T11 and T12 are electrically insulated on the liquid crystal drive control device 10. Since the first wirings L13 and L14 and the second wirings L11 and L12 are commonly connected to the strobe terminals T17 and T18, the strobe offset current Iof can be supplied to the load resistor RL1.

The data comparator 52 has two input terminals (+) and (-) for differential inputs. The third lines L15 and L16 are drawn out from two input terminals (+) and (-) of the data comparator 52, and the third lines L15 and L16 are coupled to the third external terminals T15 and T16. The third external terminals T15 and T16 are coupled to the data terminals T19 and T20 through the third wirings L23 and L24. As a result, data output from the data output buffer 402 of the baseband unit 4 can be acquired by the data comparator 52.

Further, the fourth lines L17 and L18 are drawn out from the differential output terminal of the data output buffer 53, and the fourth lines L17 and L18 are coupled to the third lines L15 and L16 in the liquid crystal drive control device 10. .

The basic operation of the above configuration is the same as the case shown in FIG. However, in the present embodiment, the margin shortage caused by the wiring resistance on the glass substrate 70 is eliminated as described below.

Since the first wirings L21, L22, the second wirings L19, L20, and the third wirings L23, L24 are wirings by the transparent electrode layer of the glass substrate 70, the values of these wiring resistances R1 to R6 are the strobe transmission paths L25 and L26. However, it is much larger than the wiring formed on the printed wiring board 71 having plasticity such as the data transmission paths L27 and L28. However, the first lines L13 and L14 and the first external terminals T13 and T14 and the second lines L11 and L12 and the second external terminals T11 and T12 are electrically insulated on the liquid crystal drive control device 10. Since the first wiring L13, L14 and the second wiring L11, L12 are commonly connected to the strobe terminals T17, T18, the strobe offset current source 54 can be supplied to the load resistor RL1. The first wirings L21 and L22 are not included in the current path of the strobe offset current Iof. That is, the strobe offset current Iof does not flow to the wiring resistors R1 and R2. For this reason, in the above formula (4), the fluctuation term (Iof x (R1 + R2)) becomes "0" and is equivalent to the above formula (5) in the absence of wiring resistances R1 and R2. Therefore, according to the structure shown in FIG. 1, the margin lack resulting from wiring resistance R1, R2 on the glass substrate 70 can be eliminated. In addition, according to the structure shown in FIG. 1, although the 2nd external terminal T11 and T12 increase, many 1st external terminal T13 and T14 are provided and correspondingly many 1st wiring L21 and L22 are connected in parallel, In order to reduce the wiring resistance values of the wiring resistors R1 and R2, since the number of external terminals can be increased to the minimum, the chip size of the liquid crystal drive control device 10 does not significantly increase.

According to the said example, the following effect can be acquired.

Since the second lines L11, L12, and the second external terminals T11, T12 and the first lines L13, L14, and the first external terminals T13, T14 are electrically insulated, outside of the liquid crystal drive control device 10, the first By connecting the wirings L13 and L14 and the second wirings L11 and L12 to the strobe terminals T17 and T18 in common, the first wirings L21 and L22 may not be included in the current path of the strobe offset current Iof by the strobe offset current source 54. have. Thereby, in the system provided with the said liquid crystal drive control apparatus 10, the margin lack resulting from wiring resistance R1, R2 on the glass substrate 70 can be eliminated.

As mentioned above, although the invention made by this inventor was demonstrated concretely, this invention is not limited to this, A various change is possible of course in the range which does not deviate from the summary.

For example, as shown in FIG. 9, strobe offset current terminals T21 and T22 are provided in the glass substrate 70, and 2nd wiring L19 and L20 are couple | bonded with this strobe offset current terminals T21 and T22. The strobe offset current Iof may be supplied to the load resistor RL1 via the strobe offset current terminals T21 and T22 through the strobe offset current transfer L31 and L32. Even in this way, the same effects as those shown in FIG. 1 can be obtained.

In addition, as shown in Fig. 8, by arranging the wiring on the output terminal side of the data output buffer 53 with the wiring of the strobe offset current source, a delay condition for the signal can be provided. In other words, the fourth external terminals T21 and T22 are provided in the liquid crystal drive control device 10, and the fourth line is coupled to the fourth external terminals T21 and T22. The fourth external terminals T21 and T22 are coupled to the data terminals T19 and T20 by the fourth wirings L29 and L30. Since the fourth wirings L29 and L30 have wiring resistances R7 and R8 corresponding to the wiring resistances R5 and R6 in the second wirings L19 and L20, the skew can be aligned by the wiring related to the strobe signal and the wiring related to the data. Therefore, the transmission error of a signal can be reduced.

In the above description, the case in which the invention made mainly by the present inventors is applied to a mobile phone which is a background of use is described. However, the present invention is not limited thereto and can be widely applied to various mobile terminal systems.

The present invention can be applied to the condition of driving the liquid crystal display unit based at least on data.

The effects obtained by the representative ones of the inventions disclosed herein are briefly described as follows.

That is, the lack of margin due to wiring resistance can be eliminated without enormous increase in chip size.

Claims (7)

A strobe comparator for acquiring a strobe signal indicating the validity of data transmitted through the data transmission path; A strobe offset current source for generating a predetermined offset potential at an input terminal of the strobe comparator by supplying a predetermined offset current to a load resistor provided in the strobe transmission path that enables the transmission of the strobe signal. As a liquid crystal drive control device comprising a, A first line drawn out from the input terminal of the strobe comparator, A first external terminal capable of coupling the first line to the strobe transmission path; A second line drawn from the strobe offset current source, A second external terminal capable of coupling the second line to the strobe transmission path; And the first line and the first external terminal, and the second line and the second external terminal are electrically insulated on the liquid crystal drive control device. The method of claim 1, A data comparator for receiving data transmitted through the data transmission path; A third line drawn out from the input terminal of the data comparator; A third external terminal capable of coupling the third line to the data transmission path; A data driver for externally outputting data; A fourth line drawn out from an output terminal of the data driver; A fourth external terminal capable of coupling the fourth line to the data transmission path Further including ， And the third line, the third external terminal, and the fourth line and the fourth external terminal are electrically insulated on the liquid crystal drive control device. A transparent substrate on which a liquid crystal display portion for enabling information display is formed; A liquid crystal driver mounted on the transparent substrate to enable driving of the liquid crystal display; As a liquid crystal panel module comprising a, A liquid crystal panel module comprising the liquid crystal drive control unit as claimed in claim 1 or 2. The method of claim 3, The strobe terminal is coupled to the strobe transmission path to the transparent substrate, First wiring for coupling the strobe terminal to the first external terminal in the liquid crystal drive control device; And a second wiring for coupling the strobe terminal to the second external terminal in the liquid crystal drive control device without passing through the first wiring. The method of claim 3, The strobe terminal is coupled to the strobe transmission path to the transparent substrate, First wiring for coupling the strobe terminal to the first external terminal in the liquid crystal drive control device; Second wiring for coupling the strobe terminal to the second external terminal in the liquid crystal drive control device without passing through the first wiring; A data terminal to which the data transmission path is coupled; Third wiring for coupling the data terminal and the third external terminal in the liquid crystal drive control device; A liquid crystal panel module having a fourth wiring for coupling the data terminal and the fourth external terminal in the liquid crystal drive control device without passing through the third wiring. The method of claim 3, The strobe terminal is coupled to the strobe transmission path to the transparent substrate, First wiring for coupling the strobe terminal to the first external terminal in the liquid crystal drive control device; An offset terminal coupled to the strobe transmission path outside the liquid crystal panel module, And a second wiring for coupling the offset terminal to the second external terminal in the liquid crystal drive control device without passing through the first wiring. A portable terminal system comprising the liquid crystal panel module according to any one of claims 3 to 6, wherein the liquid crystal panel module is supported by a case.

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