JP3528009B2 - Liquid crystal display - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device.

[0002]

2. Description of the Related Art Conventionally, a liquid crystal display device is manufactured, for example, as a part of a liquid crystal television device, that is, as an image display portion of the television device, and its function is a single television function. In addition, in the liquid crystal display device, the liquid crystal display device is manufactured exclusively for the liquid crystal display device by designing a driving method, a screen size, and a power supply circuit in order to properly display a television image.

That is, in a conventional liquid crystal television device, a receiving circuit, a liquid crystal display unit, and a power supply circuit for supplying power necessary for driving them are integrally formed, and the liquid crystal display device also has its liquid crystal display. Manufactured exclusively for TV equipment. As shown in FIG. 6, there is also a conventional liquid crystal television device in which the liquid crystal television device 1 is configured to be separable into a tuner unit 2 and a liquid crystal display unit 3.

In this liquid crystal television device 1, a tuner unit 2 is provided with a rod antenna 4, a receiving section 5, an A / D converting section 6, a data converting section 7, a control section 8 and the like, and a liquid crystal display unit 3 and a display section are provided. 9 and a power supply circuit 10.
The display unit 9 includes a signal side driving circuit 11, a scanning side driving circuit 12, a liquid crystal display panel 13, and the like.

The power supply circuit 10 is incorporated in the liquid crystal display unit 3 as described above, and the liquid crystal display unit 3 is incorporated therein.
Drive voltages suitable for display driving and various voltages necessary for each circuit of the liquid crystal display unit 3 and the tuner unit 2 are generated and supplied.

The tuner unit 2 is driven by the power supply voltage supplied from the power supply circuit 10 of the liquid crystal display unit 3, the television antenna is received by the rod antenna 4, and the received radio wave is supplied to the receiving section 5.

The receiving section 5 selects a designated channel according to a tuning signal input from the control section 7, and extracts a video signal from a desired television broadcast wave supplied from the rod antenna 4 or a synchronization signal. . The receiver 5 outputs the extracted video signal to the A / D converter 6,
Further, the sync signal thus taken out is output to the control unit 8.

The A / D converter 6 performs A / D (analog / digital) conversion on the video signal input from the receiver 5 based on the timing signal input from the controller 8 and outputs it to the data converter 7. To do.

The data conversion unit 7 converts the digital video signal input from the A / D conversion unit 6 into a data format that can be driven by the signal side drive circuit 11 of the liquid crystal display unit 3, and then the signal side drive circuit 11 Output to.

The control unit 8 separates the horizontal synchronizing signal and the vertical synchronizing signal from the synchronizing signal input from the receiving unit 5, and drives and controls the signal side driving circuit 11 and the scanning side driving circuit 12 of the liquid crystal display unit 3. And generates and supplies the display control signal required for. The control unit 8 also generates a timing signal and outputs it to the data conversion unit 7.

The liquid crystal display unit 3 is driven by the drive voltage supplied from the power supply circuit 10, and the signal side drive circuit 11 thereof supplies power based on the display data and the display control signal input from the tuner unit 2. Circuit 10
A display drive signal is generated by the drive voltage supplied from the device and is output to the signal line of the liquid crystal display panel 13.

Further, the scanning side drive circuit 12 is driven by the drive voltage supplied from the power supply circuit 10 to generate a scan drive signal based on the display control signal input from the tuner unit 2 to display a liquid crystal display. Output to the scan line of the panel 13 to drive the liquid crystal display panel 13 for display.

The tuner unit 2 and the liquid crystal display unit 3 are designed and manufactured exclusively for the liquid crystal television device 1, and in particular, the power supply circuit 10 is incorporated in the liquid crystal display unit 3 to provide the liquid crystal display unit. 3 is designed and manufactured so as to generate a drive voltage suitable for the type of the display unit 9.

[0014]

However, such a conventional liquid crystal display device is manufactured as a part of a liquid crystal television device or the like, and in particular, in the liquid crystal television device, the liquid crystal display is performed from the rod antenna. Even if the panel is manufactured integrally as a dedicated structure for receiving TV radio waves of a specific broadcasting system, or the LCD TV device is manufactured separately into a tuner unit and a liquid crystal display unit, The unit is manufactured as a structure dedicated to the liquid crystal television device, and in particular, the power supply circuit is for generating a power supply having a voltage value suitable for driving the liquid crystal display panel and other circuits of the liquid crystal display device. Since it was designed and manufactured, each time the liquid crystal display panel is different, the circuit design of the power supply circuit required for driving the liquid crystal display panel is performed and the product is manufactured. There is a necessity, become necessary to duplicate the design and manufacturing operations, along with the cost of manufacturing a liquid crystal display device such as a liquid crystal television device is high, use of the liquid crystal display device is poor.

Therefore, the present invention has been made in view of the above problems, and a power source unit for generating a power source having a voltage value corresponding to a plurality of types of liquid crystal display units is incorporated to provide a plurality of types of liquid crystal display units. It is an object of the present invention to eliminate duplicated manufacturing work when manufacturing a corresponding liquid crystal display device, reduce the manufacturing cost of the liquid crystal display device, and improve the usability of the liquid crystal display device. In addition, the sub-unit has a built-in power supply unit that generates a power supply with a voltage value corresponding to multiple types of liquid crystal display units, and a sub-unit such as a tuner unit or game unit can be detachably attached to the liquid crystal display unit. It automatically determines which type of sub-unit the unit is, and performs display drive suitable for the sub-unit. An object of the present invention is to provide a liquid crystal display device which is supplied from a unit and can appropriately drive the liquid crystal display unit for display.

[0016]

A liquid crystal display device according to a first aspect of the present invention comprises a liquid crystal display section having a liquid crystal display panel,
A liquid crystal display device comprising: a liquid crystal drive unit that generates a drive signal for driving the liquid crystal display unit to display; and a power supply unit that supplies a drive voltage to the liquid crystal drive unit. The liquid crystal display unit includes a type notifying unit for notifying the liquid crystal drive unit and the power source unit of the type of the liquid crystal display panel and the type of driving method thereof, and the power source unit drives the plurality of types of liquid crystal display units to display. A voltage generation unit that generates a plurality of types of voltages necessary for driving, and based on a notification from the type notification unit, a plurality of types of voltages generated by the voltage generation unit are appropriately selected to drive voltage. Selecting means for outputting to the liquid crystal driving part as a driving means, and the liquid crystal driving part uses the driving voltage supplied from the selecting means of the power source part to drive based on the notification from the type notifying means. By generating the driving signal according to the formula, it has achieved the above objects.

A liquid crystal display device according to a second aspect of the present invention is based on a liquid crystal display section having a liquid crystal display panel, a receiving section for receiving television radio waves of a predetermined broadcasting system, and a television radio wave received by the receiving section. A liquid crystal display device comprising: a liquid crystal drive unit that generates a drive signal for driving the liquid crystal display unit to display; and a power supply unit that supplies a drive voltage to the liquid crystal drive unit. , A type notifying unit for notifying the liquid crystal drive unit and the power source unit of the type of the liquid crystal display panel and the type of its driving method in the liquid crystal display unit, and the power source unit displays a plurality of types of the liquid crystal display unit. A voltage generation unit that generates a plurality of types of voltages necessary for driving, and a plurality of voltages that are appropriately selected from the plurality of types of voltages generated by the voltage generation unit based on the notification from the type notification unit. Selecting means for outputting the driving voltage to the liquid crystal driving section as a driving voltage based on the notification from the type notifying means using the driving voltage supplied from the selecting means of the power source section. The above object is achieved by generating the drive signal according to the drive method.

In each of the above cases, the power supply unit further includes, for example, an amplifying unit that amplifies the drive voltage selected by the selecting unit and outputs the amplified drive voltage to the liquid crystal drive unit. May be.

Further, for example, as described in claim 4, the voltage generation means divides the reference voltage by a plurality of resistors to generate a plurality of voltages for each type of the liquid crystal display section. In preparation for this, the selecting means may select the drive voltage by appropriately selecting one from the plurality of voltage dividing means.

[0020]

A liquid crystal display device according to a fifth aspect of the present invention includes a liquid crystal display unit and a plurality of types of sub-units detachably attached to the liquid crystal display unit and supplying at least display data. Wherein the liquid crystal display unit includes a liquid crystal display panel, a drive circuit that generates a drive signal for driving the liquid crystal display panel to display, a determination unit that determines the type of the mounted subunit, A control unit that controls driving of the liquid crystal display panel via the drive circuit in accordance with the type of the subunit, at least one of the subunits being a tuner unit for receiving television radio waves, The unit supplies a drive voltage to the receiving section for receiving television radio waves of a predetermined broadcasting system and the drive circuit of the liquid crystal display unit. A power supply unit for generating a plurality of types of voltages required to drive a plurality of types of liquid crystal display panels for display, and a plurality of types of voltage generators generated by the voltage generation unit. Selecting means for appropriately selecting a plurality of voltages from the voltages and outputting as a driving voltage to the driving circuit, wherein the driving circuit uses the driving voltage supplied from the selecting means of the power supply section to drive the driving circuit. The above object is achieved by generating a signal.

In this case, the power supply unit may further include, for example, an amplifying unit that amplifies the drive voltage selected by the selecting unit and outputs the amplified drive voltage to the liquid crystal drive unit. Good.

Further, for example, as described in claim 7, the voltage generating means divides the reference voltage by a plurality of resistors to generate a plurality of voltages for each type of the liquid crystal display section. In preparation for this, the selecting means may select the drive voltage by appropriately selecting one from the plurality of voltage dividing means.

Further, for example, as described in claim 8, the liquid crystal display unit is provided with a type notifying unit for notifying the selecting unit of its own type, and the selecting unit is notified by the type notifying unit. The drive voltage corresponding to the type of the liquid crystal display panel may be selected based on the above.

[0025]

According to the liquid crystal display device of the invention described in claim 1,
The liquid crystal display unit includes a type notifying unit for notifying the liquid crystal display unit of the liquid crystal display panel and the type of its driving method to the liquid crystal drive unit and the power supply unit.
A plurality of types of voltages required to drive display of a plurality of types of liquid crystal display units are generated, and based on the notification from the type notifying unit, the selecting unit appropriately selects from the plurality of types of voltages generated by the voltage generating unit. Since a plurality of voltages are selected and supplied to the liquid crystal driving unit, a voltage suitable for the type of the liquid crystal display unit is selected from a plurality of types of voltages generated by one power supply unit and supplied as a driving voltage. And again,
The liquid crystal drive unit uses the drive voltage supplied from the power supply unit to generate a drive signal according to the drive method based on the notification from the type notifying unit, and drives the liquid crystal display unit to display, thereby driving the liquid crystal display device to the liquid crystal display. The liquid crystal display device can be effectively used without the need for designing and manufacturing for each type of display unit.

According to another aspect of the liquid crystal display device of the present invention, there is provided a type notifying means for notifying the type of the liquid crystal display panel in the liquid crystal display section and the type of its driving method to the liquid crystal drive section and the power supply section, and the power supply section. Generates a plurality of types of voltages necessary for driving display of a plurality of types of liquid crystal display units by the voltage generating means, and based on the notification from the type notifying means, the selecting means causes the voltage generating means to A plurality of voltages are appropriately selected from the generated plurality of voltages and are supplied to the liquid crystal drive unit.The liquid crystal drive unit uses the drive voltage supplied from the power supply unit based on the TV radio wave received by the reception unit. Since the drive signal is generated by the drive method based on the notification from the type notifying unit and the liquid crystal display unit is driven to display,
By manufacturing only the receiving part according to the broadcasting system and combining it with a common liquid crystal driving part and liquid crystal display part, a liquid crystal display device corresponding to a plurality of liquid crystal display parts and receiving parts can be manufactured without performing duplicate manufacturing steps. It can be manufactured easily, inexpensively.

In each of the above cases, for example, as described in claim 3, the power supply unit is provided with amplification means for amplifying the drive voltage selected by the selection means and outputting it to the liquid crystal drive section. Then, a stable driving voltage can be supplied to the liquid crystal driving unit.

Further, for example, as described in claim 4, the voltage generating means divides the reference voltage by a plurality of resistors to generate a plurality of voltage dividing means for each type of the liquid crystal display section. In preparation for this, if the selecting means selects the driving voltage by appropriately selecting one from the plurality of voltage dividing means, the driving voltage suitable for the type of the liquid crystal display portion can be obtained with a simple circuit configuration. Can be supplied, and the liquid crystal display device can be made inexpensive.

[0029]

According to the liquid crystal display device of the fifth aspect, a plurality of types of sub-units can be detachably attached to the liquid crystal display unit, and the liquid crystal display unit discriminates the type of the attached sub-units by the discriminating means. Then, the control section drives and controls the liquid crystal display panel via the drive circuit corresponding to the type of the subunit.

Then, the mounted subunit is
If the tuner unit is a tuner unit that receives TV radio waves, the tuner unit receives the TV radio waves of a predetermined broadcasting system at its receiving section, and the drive circuit, based on the TV radio waves received by the receiving section, supplies power to the tuner. The drive voltage supplied from the drive circuit is used to generate a drive signal to display-drive the liquid crystal display panel of the liquid crystal display unit, and the power supply unit drives the liquid crystal display unit of a plurality of types by the voltage generation means. A plurality of types of voltages necessary for the operation are generated, and the selection means appropriately selects a plurality of voltages from the plurality of types of voltages generated by the voltage generation means and supplies the selected voltages to the liquid crystal drive section.

Therefore, various sub-units can be mounted on the liquid crystal display unit, and the display drive suitable for the mounted sub-unit can be automatically performed. When the tuner unit is mounted as the sub-unit, the tuner unit It is possible to drive the liquid crystal display panel for display by supplying drive power suitable for the type of the liquid crystal display unit from the power supply unit.

As a result, it is not necessary to manufacture a sub-unit such as a tuner unit having a power source unit according to the type of the liquid crystal display unit for each liquid crystal display unit, and various liquid crystal display units can be appropriately driven for display. Therefore, the liquid crystal display device can be effectively used.

In this case, for example, as described in claim 6, when the power supply section is provided with an amplifying means for amplifying the drive voltage selected by the selecting means and outputting the amplified drive voltage to the drive circuit, it is stable. The drive voltage thus generated can be supplied to the drive circuit.

Further, for example, as described in claim 7, the voltage generating means divides the reference voltage by a plurality of resistors to generate a plurality of voltage dividing means for each type of the liquid crystal display section. In preparation for this, if the selecting means selects the driving voltage by appropriately selecting one from the plurality of voltage dividing means, the driving voltage suitable for the type of the liquid crystal display panel can be obtained with a simple circuit configuration. Can be supplied
The liquid crystal display device can be inexpensive.

Further, for example, as described in claim 8, the liquid crystal display unit includes a type notifying unit for notifying the selecting unit of its own type, and the selecting unit notifies the type notifying unit. If the drive voltage corresponding to the type of the liquid crystal display panel is selected based on the above, the drive voltage suitable for the liquid crystal display panel can be automatically selected. The display can be automatically driven in a state suitable for.

[0037]

Embodiments Embodiments will be described below with reference to the drawings. 1 to 5 are views showing an embodiment of the liquid crystal display device of the present invention. First, the configuration will be described. FIG. 1 is an overall configuration diagram of a liquid crystal display device 20. The liquid crystal display device 20 includes a liquid crystal display unit (liquid crystal display unit) 21 and a tuner that is a sub-unit 22 detachably attached to the liquid crystal display unit 21. The unit 22a, the game unit 22b, and the like.

The liquid crystal display unit 21 has a liquid crystal display panel 31 attached to the surface of a main body case 30, and below the liquid crystal display panel 31 on the front surface of the main body case 30, the TV frequencies of VHF and UHF are shown. The frequency display 32 is displayed by printing or the like. A switch 33 for turning on / off the main power supply of the liquid crystal display unit 21 is provided on the side surface of the main body case 30. Further, although not shown, a connector for connecting a controller (so-called joypad) for operating a game when the game unit 22b is connected to the side surface of the main body case 30, the tuner unit 22a and the game unit 22b. A connector for connecting the subunits 22 such as the above is provided.

The tuner unit 22a has a band switching key 41 for switching the frequency band between VHF and UHF on the surface of its body case 40, a channel call key 42 for turning on / off the display of broadcast channels, and a down channel selection. Channel down key (DOW
N) 43 and a channel up key (UP) 44 for increasing the channel selection are provided, and a slide type rod antenna 45 is provided on the upper side surface of the main body case 40.
Is attached. A terminal portion 46 is attached to a lower side surface of the body case 40, and the terminal portion 46 is detachably inserted into a connector (not shown) formed on the upper side surface of the liquid crystal display unit 21.

The game unit 22b is provided with a terminal portion 51 on the lower side surface of the main body case 50. The terminal portion 51 is formed on the upper side surface of the liquid crystal display unit 21, and is connected to the tuner unit 22a. The terminal portion 46 is detachably inserted into the same connector into which the terminal portion 46 is inserted.

That is, by inserting the terminal portion 46 of the tuner unit 22a or the terminal portion 51 of the game unit 22b, which is the subunit 22, into the connector of the liquid crystal display unit 21, the tuner unit 22a or the game unit is inserted into the liquid crystal display unit 21. 22b of 1
The liquid crystal display unit 21 displays an image from the mounted subunit 22 on the liquid crystal display panel 31, as will be described later.

The configuration of each unit will be sequentially described below. <Liquid Crystal Display Unit> First, the configuration of the liquid crystal display unit 21 will be described. As shown in FIG. 2, the liquid crystal display unit 21 includes a liquid crystal display unit 60, a storage unit 61, and a control unit 6.
The liquid crystal display unit 60 includes a liquid crystal display panel 31, a liquid crystal drive circuit 63, a liquid crystal type signal generation unit 64, and the like.

In the liquid crystal display unit 21, the liquid crystal display unit 60 is driven by the power supply circuit (see FIG. 3) 90 of the sub unit 22 such as the tuner unit 22a and the game unit 22b mounted on the liquid crystal display unit 21. Various power supplies such as a driving voltage necessary for driving the circuit and a voltage necessary for driving each circuit are supplied, and the power supply circuit 90 of the subunit 22 also supplies power to the operation unit 65.

In FIG. 2, the operation section 65 includes a power switch 33 of the liquid crystal display unit 21, a band switching key 41 of the tuner unit 22a, a channel call key 42, a channel down key 43 and a channel up key 44, and a liquid crystal display. Various keys of the controller connected to the unit 21 and other liquid crystal display unit 2
The switches and various keys of the subunit 22 connected to 1 are collectively referred to.

The liquid crystal display panel 31 has a plurality of scanning lines and data lines arranged in a matrix, and a display element such as a liquid crystal capacitor is arranged at each intersection of the scanning lines and the data lines.

The liquid crystal drive circuit 63 includes a scanning side drive circuit (see FIG. 3) 70 and a signal side drive circuit (see FIG. 3) 71. The scanning side drive circuit 70 and the signal side drive circuit 71 are provided in the scanning side drive circuit 70 and the signal side drive circuit 71. Various display control signals and display data necessary for driving the liquid crystal display panel 31 are input from the control unit 62, and various power supplies required for driving the liquid crystal display panel 31 are supplied from the power supply unit 90 of the tuner unit 21. .

That is, the scanning side drive circuit 70 generates a scanning drive voltage from the power source supplied from the power source section 90 of the tuner unit 22a based on the display control signal input from the control section 62, and the liquid crystal display panel. The liquid crystal display panel 31 is supplied with the scanning lines 31 to scan the scanning lines of the liquid crystal display panel 31.

The signal side driving circuit 71 is based on the display data supplied from the control section 62, and is based on the tuner unit 2.
A display drive signal is generated from the power supplied from the power supply unit 90 of 2a and supplied to the signal line of the liquid crystal display panel 31 to drive the liquid crystal display panel 31.

The liquid crystal type signal generation section 64 outputs the liquid crystal type signal MS corresponding to the type of the liquid crystal display section 60 to the control section 62.
Output to.

That is, the liquid crystal display section 60 is not limited to one type of the liquid crystal display panel 31 and the liquid crystal drive circuit 63, and various kinds of liquid crystal display panels 31 and the liquid crystal drive circuit 63 can be attached. For example, the liquid crystal display panel 31 is not limited to the number of scanning lines or data lines, and may have 220 scanning lines, 146 scanning lines, or any other number. As the liquid crystal drive circuit 63, one that sequentially drives one scanning line, one that simultaneously drives two scanning lines, one that simultaneously drives three scanning lines, and various other drives. It may be a method.

Then, the liquid crystal type signal generating section 64 outputs the liquid crystal type signal MS indicating the type of the liquid crystal display section 60 to the control section 62. The liquid crystal type signal MS is, for example, a 3-bit coded signal.

The control section 62 determines the type of the liquid crystal display section 60 on the basis of the liquid crystal type signal MS from the liquid crystal type signal generation section 64 of the liquid crystal display section 60, and a control signal suitable for the type of the liquid crystal display section 44. Is output to the liquid crystal drive circuit 63, and a liquid crystal type signal MS indicating the type of the liquid crystal display unit 60 is output to the power source unit 90 of the tuner unit 22a to display a liquid crystal display on the power source unit 90 of the tuner unit 22a as described later. A drive power source suitable for the type of the unit 60 is supplied.

Further, the control section 62 discriminates whether the sub-unit 22 is mounted or not mounted, and determines whether the mounted sub-unit 22 is the tuner unit 22a or the game unit 22b, or other sub-unit 22. Then, the operation control appropriate for the type of the mounted sub-unit 22 is performed.

Whether the sub-unit 22 is mounted or not mounted may be discriminated by a switch which is turned on / off in accordance with the mounting / non-mounting of the sub-unit 22, or a signal exchange with the sub-unit 22 is performed. Alternatively, the method of the determination is not limited. Further, the determination as to whether the mounted subunit 22 is the tuner unit 22a, the game unit 22b, or the other subunit 22 is turned on / off depending on the type of the mounted subunit 22. It may be a switch, a signal to and from the subunit 22,
For example, the determination may be made by exchanging 2-bit signals,
The determination method is not limited.

The storage unit 61 is, for example, a ROM (Read Onl
y memory), RAM (Random Access Memory), etc., and stores a control program for controlling the drive of the liquid crystal display unit 21, system data, and the like, and is also used as a work memory for the control unit 62.

That is, the storage unit 61 includes the liquid crystal display unit 60.
The drive control method of the liquid crystal display section 60 corresponding to the type of the liquid crystal display section 60 is stored, and the control section 62 selects the liquid crystal type signal MS input from the liquid crystal type signal generation section 64 among the drive control methods stored in the storage section 61. In accordance with the driving method, the display control signal corresponding to the type of the liquid crystal type signal generating unit 64 is output to the scanning side driving circuit 70 and the signal side driving circuit 71, which are the liquid crystal driving circuit 63, and the liquid crystal type signal generation is performed. Part 6
The liquid crystal type signal MS from the tuner unit 22a
To the liquid crystal display unit 60, and drive power corresponding to the type of the liquid crystal display unit 60 is supplied to the liquid crystal display unit 60.

Further, the storage section 61 includes the liquid crystal display unit 2
The driving method of the liquid crystal display unit 60 corresponding to the type of the sub-unit 22 mounted in 1 is stored, and the control unit 62
When the type of the mounted subunit 22 is determined, the drive of the liquid crystal display unit 60 is controlled based on the drive method stored in the storage unit 61.

In particular, the storage unit 61 stores the game unit 22.
It stores the control method of the game software when b is attached to the liquid crystal display unit 21 and the driving method of the liquid crystal display unit 60 at that time, and the control unit 62 controls the game unit 22b.
Is attached to the liquid crystal display unit 21, the game software data is read from the game unit 22b based on the control method of the game software stored in the storage unit 61, and the operation unit 65, particularly the liquid crystal display unit 21, is read. The game process corresponding to the operation of the connected controller is performed, and the video data read from the game software is converted into display data and displayed on the liquid crystal display panel 31 based on the driving method of the liquid crystal display unit 60 at that time. .

<Sub-unit> Next, the sub-unit 22
The configuration of will be described. First, tuner unit 2
The configuration of 2a will be described. Tuner unit 22
As shown in FIG. 3, a is a receiver 80 that receives a television radio wave and generates a display control signal necessary for driving the liquid crystal display unit 21, and supplies power to the liquid crystal display unit 21 and the liquid crystal display unit 21. And a power supply unit 90 that operates.

The receiving section 80 includes a rod antenna 45, an electronic tuning tuner 81, a television linear circuit 82, an A / D conversion circuit 83, a data conversion circuit 84, a control circuit 85 and the like.

The rod antenna 45 receives television radio waves and supplies the received radio waves to the electronic tuning tuner 81.
The electronic tuning tuner 81 selects a designated channel according to a tuning signal input from the control circuit 85, converts a desired television broadcast radio wave supplied from the rod antenna 45 into an intermediate frequency signal, and the television linear circuit 8
Output to 2.

The television linear circuit 82 is composed of an intermediate frequency amplification circuit, a video detection circuit, a video amplification circuit, an AFT detection circuit, a chroma circuit, etc., and converts the intermediate frequency signal input from the electronic tuning tuner 81 into the intermediate frequency signal. After amplification by the amplification circuit, AFT detection by the AFT detection circuit, image detection by the video detection circuit to extract the image signal, and further after the image signal output by the video detection circuit is amplified by the video amplification circuit , A / D conversion circuit 8
Output to 3. Further, the television linear circuit 82, by its chroma circuit, extracts the synchronizing signal from the video signal and outputs it to the control circuit 85.

The audio signal separated by the television linear circuit 82 is sent to an audio circuit (not shown), and is audio-detected by the audio circuit to be converted into a low frequency signal, which is then output to the liquid crystal display unit 21. It The liquid crystal display unit 21 includes an amplifier circuit and a speaker (not shown), and outputs a sound signal input from the tuner unit 22a from the speaker in a loud voice.

The A / D conversion circuit 83 performs A / D (analog / digital) conversion (sampling) on the basis of the timing signal input from the control circuit 85, and also digitally converts the video signal input from the television linear circuit 82. The R, G, and B n-bit parallel data, which is the video signal, is converted into serial data and output to the data conversion circuit 84.

The data conversion circuit 84 is the A / D conversion circuit 8
The serial data input from 3 is used for the liquid crystal display unit 2
It is converted into a gradation display signal suitable for gradation display on the first liquid crystal display unit 60 and output to the control unit 62 of the liquid crystal display unit 21.

The control circuit 85 separates the horizontal sync signal and the vertical sync signal from the sync signal input from the television linear circuit 82, generates a display control signal, and outputs the display control signal to the control unit 62 of the tuner unit 21.

The power supply section 90 includes a selection section 91 and a voltage control section 9
2, the voltage control unit 92 generates a plurality of voltages corresponding to a plurality of types of liquid crystal display panels 31. Then, the selection unit 91 manually selects a plurality of voltages suitable for the liquid crystal display panel 31 of the liquid crystal display unit 21 to which the tuner unit 22a is attached from the plurality of voltages generated by the voltage control unit 92.

That is, the selection section 91 is provided with, for example, a DIP switch and an encoder, and by manually setting the DIP switch, the voltage corresponding to the type of the liquid crystal display panel 31 is selected and designated. The encoder converts the switch state of the dip switch, that is, the voltage selection state into, for example, a 3-bit coded signal, and outputs it as the voltage selection signal VS to the voltage control unit 92 and the control circuit 85.

The control circuit 85 receives the voltage selection signal VS from the selection section 91 and the liquid crystal classification signal MS from the liquid crystal classification signal generation section 64, and the control circuit 85 receives the voltage selection signal VS. And liquid crystal type signal MS
Based on the above, the display control signal is generated and output to the control unit 62 of the liquid crystal display unit 21.

When the tuner unit 22a is attached to the liquid crystal display unit 21, the control unit 6
2 is the display drive control signal and the scan drive control signal from the tuner unit 22a as they are (in the through state)
The signal is output to the scanning side drive circuit 70 and the signal side drive circuit 71 of the liquid crystal display unit 60.

In FIG. 3, for the sake of clarity, a display drive control signal and a scan drive control are provided from the gradation control section 90 of the tuner unit 22a to the signal side drive circuit 71 and the scan side drive circuit 70 of the liquid crystal display unit 21. It is described that the signal is directly input.

The voltage control unit 92 of the power supply unit 90 is supplied with a reference voltage whose voltage is adjusted to a predetermined voltage by a power supply circuit (not shown) from a power supply supplied from a battery or an external commercial power supply. By dividing the reference voltage, a plurality of voltages are generated, and the voltage selection signal VS and the liquid crystal type signal generation unit 64 input from the selection unit 91 are generated.
A predetermined plurality of voltages are selected from the plurality of voltages on the basis of the liquid crystal type signal MS supplied from, and are supplied to the tuner unit 21 and the receiving section 80.

In particular, when the voltage selection signal VS is input from the selection unit 91, the power supply unit 90 gives priority to the voltage selection signal VS over the liquid crystal type signal MS, and the voltage selection signal V
The voltage specified by S is selected, and the voltage selection by manual operation is prioritized.

As shown in FIG. 4, the voltage control unit 92 is provided with a voltage generating circuit 93, a voltage selecting circuit 94, a voltage amplifying circuit 95, an output voltage selecting circuit 96 and the like. The reference voltage V0 and the reference voltage Vn are input to the voltage generation circuit 93.

The voltage generating circuit 93, as shown in FIG.
Type voltage generation circuit 9 for a plurality of types of liquid crystal display panels 31
3a, 93b, 94c, ..., Each type of voltage generating circuit 93a, 93b, 94c, ... Is connected in parallel between the power source line of the reference voltage V0 and the power source line of the reference voltage Vn. ing.

Each type of voltage generating circuit 93a, 93b, 94
c, ... Have a circuit configuration in which a plurality of (four in FIG. 5) voltage dividing resistors R1, R2, ... R1, R
, ..., Rn are taken out from the connection point, the divided voltages V1, V2, ..., Vn-1 are output to the voltage selection circuit 94, and the reference voltage V0 and the reference voltage Vn are output. Is output to the voltage selection circuit 94 as it is.

The voltage selection circuit 94 receives the voltage selection signal VS from the selection section 91 and the liquid crystal classification signal MS from the liquid crystal classification signal generation section 64, and the voltage selection circuit 94 receives the voltage generation circuit 93. The divided voltages V1, V2, ..., Vn-1 input from the voltage selection signal V
It is selected based on S or the liquid crystal type signal MS and output to the voltage amplifier circuit 95.

That is, the voltage selection circuit 94 includes a decoder circuit, a ROM (Read Only Memory), and a RAM (Random A).
The decoder circuit decodes the voltage selection signal VS or the liquid crystal type signal MS, reads the divided voltage corresponding to the decoding result from the ROM or RAM, and selects it by the multiplexer.

The voltage selection circuit 94 is not limited to the one having the above-mentioned configuration, and for example, it is provided with a plurality of switches, and various types of voltages of the voltage generation circuit 93 are based on the voltage selection signal VS or the liquid crystal type signal MS. Generating circuit 93a,
.. may be switched to the voltage amplification circuit 95 and connected.

The voltage amplifier circuit 95 includes a plurality of operational amplifiers O.
P1 to OPm, the divided voltage input from the voltage selection circuit 94 is amplified and output to the output voltage selection circuit 96, and the output voltage is prevented from decreasing due to the load current.

The output voltage selection circuit 96 includes the selection unit 9 described above.
1, the liquid crystal type signal MS is input from the liquid crystal type signal generator 64, and the output voltage selection circuit 96 displays the liquid crystal based on the voltage selection signal VS or the liquid crystal type signal MS. The drive voltage supplied to the liquid crystal display unit 60 of the unit 21 and the voltage output to the various circuits 97 of the tuner unit 22a are selectively classified and output to the various circuit units 97 and the liquid crystal display unit 60, respectively.

As described above, the voltage control section 92 uses the liquid crystal display section 6 based on the voltage selection signal VS and the liquid crystal type signal MS.
A plurality of voltages corresponding to a plurality of types of 0 are generated, a voltage corresponding to a type of the liquid crystal display unit 60 is selected from the generated voltages, and the selected voltage is supplied to the liquid crystal display unit 60 as a drive voltage. The necessary voltage is supplied to the section 97.

Next, the structure of the game unit 22b will be described. Although not shown in detail, the game unit 22b has, in the main body case 50, a memory for storing various game programs, video data and sound effect data of the game, a control unit and an interface for controlling the operation of the memory, and the like. The game program execution process is performed by the control unit 62 of the liquid crystal display unit 21 as described above.

Although not shown, the game unit 22b has a power source similar to that of the tuner unit 22a, regardless of the type of the liquid crystal display unit 60 of the liquid crystal display unit 21 to which the game unit 22b is mounted. A suitable power supply can be supplied from this power supply.

Next, the operation of this embodiment will be described. The liquid crystal display unit 21 has a connector (not shown) to which the subunit 22 is attached, and each subunit 22 is
For example, as shown in FIG. 1 for the tuner unit 22a and the game unit 22b, the liquid crystal display unit 21 is provided with terminal portions 46 and 51, respectively.

Each sub-unit 22 includes the terminal portion 46,
By inserting 51 into the connector of the liquid crystal display unit 21, it is mounted on the liquid crystal display unit 21, and when the subunit 22 is mounted, the control unit 62 of the liquid crystal display unit 21 switches between the switch operation and the subunit 22. The installed subunit 22 by exchanging the signal of
Is a sub-unit 22, for example, a tuner unit 22a, a game unit 22b, or the like.

Then, when the control section 62 determines the type of the mounted sub-unit 22, the sub-unit 22
The drive of the liquid crystal display unit 60 is controlled according to the type of. When the game unit 22b is attached as the subunit 22, a controller for operating the game is connected to the connector.

That is, when the game unit 22b is attached, the liquid crystal display unit 21 has its controller 6
2 reads the driving method of the game software and the driving method of the liquid crystal display section 60 corresponding to the game software stored in the storage section 61, reads the data of the game software from the game unit 22b, and the controller (operation section 65). Is performed, the video data read from the game unit 22b is converted into display data, and the liquid crystal display unit 60 suitable for the driving method corresponding to the type of the liquid crystal display unit 60 is driven. Also, the sound effect is output from the built-in speaker.

Although not shown, the game unit 22b has a power supply unit similar to the power supply unit 90 shown in FIGS. 3 to 5, and the game unit 22b has a liquid crystal type signal from the liquid crystal type signal generation unit 64. MS and game unit 22b
The voltage selection signal VS from the selection unit of the power supply unit is input.

Then, the game unit 22b selects a drive voltage suitable for the type of the liquid crystal type signal generator 6431 based on the voltage selection signal VS or the liquid crystal type signal MS, and supplies it to the liquid crystal display unit 21. Power is supplied to the various circuit parts in the game unit 22b at an appropriate voltage.

Further, as shown in FIG. 3, the liquid crystal display unit 21 uses the drive voltage supplied from the power source section 90 of the tuner unit 22a when the tuner unit 22a is mounted, so that the tuner unit 22a can be driven.
The display data supplied from the device is displayed on the liquid crystal display panel 31.

At this time, the liquid crystal display unit 21
Outputs the display drive control signal and the scan drive control signal input from the tuner unit 22a to the control unit 62 as they are (through) to the scan side drive circuit 70 and the signal side drive circuit 71 of the liquid crystal display unit 60.

That is, the tuner unit 22a is
The electronic tuning tuner 81 selects a television broadcast radio wave of a designated channel from the television broadcast radio waves received by the rod antenna 45, converts it into an intermediate frequency signal, and outputs it to the television linear circuit 82.

The television linear circuit 82 amplifies the intermediate frequency signal input from the electronic tuning tuner 81, and then
FT detection or video detection is performed, an image signal is extracted, amplified, and then output to the A / D conversion unit 84. Also,
The television linear circuit 82 extracts the sync signal from the video signal and outputs it to the control circuit 85.

The A / D converter 84 is used in the television linear circuit 8
2 is sampled based on a timing signal input from the control circuit 85 to perform A / D conversion, and then n-bit parallel video data is converted to serial data for data conversion. Circuit 84
The data conversion circuit 84 converts the serial display data input from the A / D conversion unit 84 into a gradation display signal and outputs the gradation display signal to the control unit 62 of the tuner unit 21.

Further, the control circuit 85 separates the vertical synchronizing signal and the horizontal synchronizing signal from the synchronizing signal inputted from the television linear circuit 82, and the voltage selecting signal VS inputted from the selecting section 91 and the liquid crystal type signal generating section. Based on the liquid crystal type signal MS input from 64, a display control signal suitable for the type of the liquid crystal display unit 60 is generated and output to the control unit 62 of the liquid crystal display unit 21.

That is, the receiving section 80 receives a television radio wave of one predetermined broadcasting system, outputs the video data to the liquid crystal display unit 21, and outputs the voltage selection signal VS.
And a display control signal suitable for the type of the liquid crystal display unit 60 based on the liquid crystal type signal MS, and the liquid crystal display unit 2
Output to 1.

Further, the power supply section 90 of the tuner unit 22a outputs the voltage selection signal VS based on the voltage selection signal VS by the voltage control section 92 when the voltage selection signal VS is input from the selection section 91. When not input, a drive voltage suitable for the type of the liquid crystal display unit 60 is generated based on the liquid crystal type signal MS input from the liquid crystal type signal generation unit 64 of the liquid crystal display unit 21, and the liquid crystal display unit 60 displays the drive voltage. In addition to supplying, various circuit parts 9 of the tuner unit 22a and the liquid crystal display unit 21
The voltage required by 7 is generated and supplied to various circuit units 97.

That is, the voltage control section 92 includes the type voltage generation circuits 93a, 93b, 94 of the voltage generation circuit 93.
.. generate a plurality of divided voltages suitable for a plurality of types of liquid crystal display units 60, and the voltage selection circuit 94 determines the type of the voltage generation circuit 93 based on the voltage selection signal VS or the liquid crystal type signal MS. Voltage generation circuits 93a, 93b, 9
4c, ... are appropriately selected from the plurality of divided voltages and output to the liquid crystal display section 60 and various circuit sections 97 via the voltage amplification circuit 95 and the output voltage selection circuit 96.

Then, the control unit 6 of the liquid crystal display unit 21.
2, the tuner unit 22a is the liquid crystal display unit 2
When it is determined that the liquid crystal display unit 60 is attached to the liquid crystal display unit 60, the display drive control signal and the scan drive control signal from the tuner unit 22a are directly (in the through state) the scan side drive circuit 70 and the signal as described above. Output to the side drive circuit 71.

Scan side drive circuit 70 and signal side drive circuit 7
1 uses the drive voltage supplied from the power supply section 90 of the tuner unit 22a to display-drive the liquid crystal display panel 31 based on the display drive control signal and the scan drive control signal input via the control section 62. To do.

As described above, according to the present embodiment, the liquid crystal drive circuit (liquid crystal drive section) 63 has the tuner unit 22a.
The drive voltage supplied from the power supply unit 90 is used to generate a drive signal to drive the display of the liquid crystal display panel 31, and the power supply unit 90 has its voltage control unit (voltage generation means) 9
2 generates a plurality of types of voltages required to drive a plurality of types of liquid crystal display units 60, and a voltage selection circuit 94 and an output voltage selection circuit 96 that are selection means generate the voltages control unit 94. Since a plurality of kinds of voltages are selected and supplied to the liquid crystal drive circuit 63, one power supply unit 90
A voltage of a type suitable for the type of the liquid crystal display unit 60 can be selected from a plurality of types of voltages generated by, and can be supplied as a drive voltage.
There is no need to design and manufacture each type of liquid crystal display device 2
0 can be effectively used.

Further, according to this embodiment, a drive signal is generated using the drive voltage supplied from the power source unit 90 on the basis of the television radio wave received by the receiver unit 80, and the liquid crystal display unit 60 is operated. Although the display is driven, the power supply unit 90 generates a plurality of types of voltages necessary for driving the plurality of types of liquid crystal display units 60 by its voltage generation means, and appropriately generates a plurality of voltages from the generated plurality of types of voltages. Since the voltage is selected and supplied to the liquid crystal drive circuit 63, only the receiving unit 80 is manufactured according to the broadcasting system, and the common liquid crystal drive circuit 63 and the liquid crystal display unit 60 are manufactured.
By combining with, it is possible to easily and inexpensively manufacture the liquid crystal display device 20 corresponding to the plurality of liquid crystal display units 60 and the receiving unit 80, without performing a duplicate manufacturing process.

Further, in the present embodiment, the power supply unit 90
However, since it has a voltage amplifier circuit (amplifying means) 95 which amplifies the drive voltage selected by the voltage selection circuit 94 and outputs it to the liquid crystal drive circuit 63, a stable drive voltage is supplied to the liquid crystal drive circuit 63. be able to.

Further, according to the present embodiment, the liquid crystal display unit 60
Includes a liquid crystal type signal generating section (type notifying means) 64 for notifying the power source section 90 of its own type, and the power source section 90 of the liquid crystal display section 60 is based on the notification from the liquid crystal type signal generating section 64. Since the drive voltage corresponding to the type is selected, the drive voltage suitable for the liquid crystal display unit 60 can be automatically selected, and the liquid crystal display unit 60 is automatically displayed in a state suitable for the type of the liquid crystal display unit 60. Can be driven.

Furthermore, according to this embodiment, a plurality of types of sub-units 22 can be detachably attached to the liquid crystal display unit 21, and the liquid crystal display unit 21 discriminates the type of the attached sub-units 22, The control unit 62 controls the drive of the liquid crystal display panel 31 via the liquid crystal drive circuit 63 corresponding to the type of the subunit 22.

Then, the attached sub-unit 22
Is a tuner unit 22a that receives a TV radio wave, the tuner unit 22a of the tuner unit 22a receives a TV radio wave of a predetermined broadcasting system at its receiving section 80, and the liquid crystal drive circuit 63 receives it at the receiving section 80. The drive voltage supplied from the power supply unit 90 is used to generate a drive signal based on television radio waves to drive the liquid crystal display panel 31 of the liquid crystal display unit 21 for display. The power supply unit 90 has a plurality of types. A plurality of types of voltages required to drive the liquid crystal display unit 60 are generated, and a plurality of voltages are appropriately selected from the plurality of types of generated voltages based on the type of the liquid crystal display unit 60, and the liquid crystal drive circuit 63 is selected. Supply to.

Therefore, various subunits 22 are mounted on the liquid crystal display unit 21, and the mounted subunit 2
2 can be automatically driven for display, and the tuner unit 22a can be used as the subunit 22.
Is installed, the power supply unit 9 of the tuner unit 22a
It is possible to drive the liquid crystal display panel 31 for display by supplying a drive voltage suitable for the type of the liquid crystal display unit 21 from 0.

As a result, it is not necessary to manufacture a sub-unit 22 such as a tuner unit 22a having a power source unit according to the type of the liquid crystal display unit 21 for each liquid crystal display unit 21, and various liquid crystal display units 21 can be properly used. The liquid crystal display device 20 can be effectively used.

Although the invention made by the present inventor has been specifically described based on the preferred embodiments, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the invention. Needless to say.

For example, in the above embodiment, the voltage generation circuit 93 of the voltage control unit 90 divides the reference voltage by a plurality of resistors to generate a plurality of voltages for each type of the liquid crystal display unit 60. 93a, 93b, 94c, ...
., And the voltage selection circuit 94 has the type voltage generation circuits 93a, 93b, 94c ,.
The drive voltage may be selected by selecting .. By doing so, the drive voltage suitable for the type of the liquid crystal display unit 60 can be supplied with a simple circuit configuration. The device 20 can be inexpensive.

[0112]

According to the liquid crystal display device of the invention described in claim 1, there is provided a type notifying means for notifying the liquid crystal drive unit and the power source unit of the type of the liquid crystal display panel in the liquid crystal display unit and the type of the driving method thereof. The power supply unit generates a plurality of types of voltages necessary for driving the plurality of types of liquid crystal display units by the voltage generation unit, and the selection unit causes the liquid crystal display unit to generate a plurality of types of voltages required for display driving. Based on the type, the voltage is selected from a plurality of types of voltages generated by the voltage generating means and supplied to the liquid crystal drive unit. Therefore, a plurality of types of voltages generated by one power supply unit are suitable for the type of the liquid crystal display unit. A type of voltage can be selected and supplied as a drive voltage. Further, the liquid crystal drive unit uses the drive voltage supplied from the power supply unit and is driven by the drive system based on the notification from the type notifying unit. Generates a No., by displaying driving the liquid crystal display unit, a liquid crystal display device is not necessary to design and manufacture for each type of liquid crystal display unit, it is possible to effectively utilize the liquid crystal display device.

According to the liquid crystal display device of the second aspect of the present invention, the liquid crystal driving device is provided with the type notifying means for notifying the liquid crystal driving unit and the power source unit of the type of the liquid crystal display panel in the liquid crystal display unit and the type of its driving method. The unit generates a drive signal using the drive voltage supplied from the power supply unit based on the TV radio wave received by the reception unit to drive the liquid crystal display unit for display, and the power supply unit generates the voltage. A plurality of types of voltages required to drive the plurality of types of liquid crystal display units for display driving, and based on the notification from the type notifying unit, the selecting unit, based on the type of the liquid crystal display unit, Select from a plurality of types of voltage generated by the voltage generation means and supply it to the liquid crystal drive section, and the liquid crystal drive section uses the drive voltage supplied from the power supply section based on the television radio waves received by the reception section. Type notification Since the driving signal is generated by the driving method based on the notification from the stage and the liquid crystal display section is driven to display, by manufacturing only the receiving section according to the broadcasting method and combining it with the common liquid crystal driving section and liquid crystal display section. A liquid crystal display device corresponding to a plurality of liquid crystal display units and a plurality of receiving units can be easily manufactured at low cost without performing duplicated manufacturing steps.

In this case, as described in claim 3, when the power supply unit is provided with an amplifying unit for amplifying the drive voltage selected by the selecting unit and outputting the amplified drive voltage to the liquid crystal drive unit, it becomes stable. The driving voltage can be supplied to the liquid crystal driving unit.

Further, as described in claim 4, the voltage generating means divides the reference voltage by a plurality of resistors,
A voltage dividing unit that generates a plurality of voltages is provided for each type of the liquid crystal display unit, and the selecting unit selects the drive voltage by selecting the voltage dividing unit according to the type of the liquid crystal display unit. By doing so, a drive voltage suitable for the type of the liquid crystal display section can be supplied with a simple circuit configuration, and the liquid crystal display device can be made inexpensive.

[0116]

According to the liquid crystal display device of the present invention, a plurality of types of sub-units can be removably attached to the liquid crystal display unit, and the liquid crystal display unit can be discriminated by the discriminating means. Then, the control section drives and controls the liquid crystal display panel via the drive circuit in accordance with the type of the sub-unit.

Then, the mounted subunit is
If the tuner unit is a tuner unit that receives TV radio waves, the tuner unit receives the TV radio waves of a predetermined broadcasting system at its receiving section, and the drive circuit, based on the TV radio waves received by the receiving section, supplies power to the tuner. The drive voltage supplied from the drive circuit is used to generate a drive signal to display-drive the liquid crystal display panel of the liquid crystal display unit, and the power supply unit drives the liquid crystal display unit of a plurality of types by the voltage generation means. A plurality of types of voltages required to generate the voltage are generated, and the selection means selects from the plurality of types of voltages generated by the voltage generation means based on the type of the liquid crystal display section and supplies the selected voltage to the liquid crystal drive section.

Therefore, it is possible to mount various sub-units on the liquid crystal display unit and automatically perform display drive suitable for the mounted sub-units. When the tuner unit is mounted as the sub-unit, the tuner unit It is possible to drive the liquid crystal display panel for display by supplying drive power suitable for the type of liquid crystal display unit from the power supply circuit.

As a result, it is not necessary to manufacture a sub-unit such as a tuner unit having a power supply circuit according to the type of the liquid crystal display unit for each liquid crystal display unit.
Various liquid crystal display units can be appropriately driven for display, and the liquid crystal display device can be effectively used.

In this case, as described in claim 6, when the power supply section is provided with an amplifying means for amplifying the drive voltage selected by the selecting means and outputting the amplified drive voltage to the drive circuit, stable driving is achieved. The voltage can be supplied to the drive circuit.

Further, as described in claim 7, the voltage generating means divides the reference voltage by a plurality of resistors,
A voltage dividing unit that generates a plurality of voltages is provided for each type of the liquid crystal display unit, and the selecting unit selects the drive voltage by selecting the voltage dividing unit according to the type of the liquid crystal display panel. By doing so, a drive voltage suitable for the type of the liquid crystal display panel can be supplied with a simple circuit configuration, and the liquid crystal display device can be made inexpensive.

Further, as described in claim 8, the liquid crystal display unit includes a type notifying unit for notifying the selecting unit of its own type, and the selecting unit is based on the notification from the type notifying unit. When the drive voltage corresponding to the type of the liquid crystal display panel is selected, the drive voltage suitable for the liquid crystal display panel can be automatically selected, and the liquid crystal display panel is suitable for the type of liquid crystal display panel. The display can be automatically driven in the closed state.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of an embodiment of a liquid crystal display device of the present invention.

FIG. 2 is a circuit block diagram of the liquid crystal display unit of FIG.

3 is a circuit block diagram of the tuner unit and the liquid crystal display unit of FIG.

FIG. 4 is a detailed circuit block diagram of the power supply unit shown in FIG.

5 is a detailed circuit diagram of the voltage generation circuit of FIG.

FIG. 6 is a circuit block diagram of a liquid crystal television device to which a conventional liquid crystal display device is applied.

[Explanation of symbols] 20 Liquid crystal display 21 Liquid crystal display unit 22 subunits 22a Tuner unit 22b game unit 31 LCD display panel 45 rod antenna 46, 51 Terminal part 60 LCD display 61 storage 62 control unit 63 LCD drive circuit 64 LCD type signal generator 65 Operation part 70 Scanning side drive circuit 71 Signal side drive circuit 80 Receiver circuit 81 Electronic Tuning Tuner 82 TV linear circuit 83 A / D conversion circuit 84 Data conversion circuit 85 Control circuit 90 Power supply 91 Selector 92 Voltage control unit 93 Voltage generation circuit 94 Voltage selection section 95 Voltage amplification circuit 96 Output voltage selection circuit 93a, 93b, 94c, ... Type voltage generation circuit R1, R2, ..., Rn voltage dividing resistor

Claims (8)

(57) [Claims] 1. A liquid crystal display unit having a liquid crystal display panel, a liquid crystal drive unit that generates a drive signal for driving the liquid crystal display unit to display, and a power supply unit that supplies a drive voltage to the liquid crystal drive unit. A liquid crystal display device comprising: a liquid crystal display device, which includes a type notifying unit for notifying the liquid crystal drive unit and the power supply unit of the type of the liquid crystal display panel in the liquid crystal display unit and the type of its driving method, The power supply unit generates a plurality of types of voltages required to drive a plurality of types of liquid crystal display units, and a voltage generation unit that generates the voltage based on a notification from the type notification unit. Selecting means for appropriately selecting a plurality of voltages from a plurality of kinds of voltages and outputting as a driving voltage to the liquid crystal driving section, the liquid crystal driving section is provided with a driving voltage supplied from the selecting means of the power source section. A liquid crystal display device, wherein the driving signal is generated by a driving method based on a notification from the type notifying means using pressure. 2. A liquid crystal display section having a liquid crystal display panel, a receiving section for receiving television radio waves of a predetermined broadcasting system, and for driving display of the liquid crystal display section based on the television radio waves received by the receiving section. A liquid crystal display device, comprising: a liquid crystal drive unit for generating a drive signal for the liquid crystal display unit; and a power supply unit for supplying a drive voltage to the liquid crystal drive unit. And a type notifying unit for notifying the liquid crystal driving unit and the power source unit of the type of the liquid crystal display unit, and the power source unit is provided with a plurality of types of voltages necessary to drive the plurality of types of the liquid crystal display units for display driving. Based on the notification from the type notifying means, the liquid crystal drive section selects a plurality of voltages from the plurality of types of voltages generated by the voltage generating means as driving voltages. The liquid crystal drive section uses the drive voltage supplied from the selection section of the power supply section to generate the drive signal based on the notification from the type notification section. A liquid crystal display device comprising: 3. The power supply unit further comprises an amplification unit that amplifies the drive voltage selected by the selection unit and outputs the amplified drive voltage to the liquid crystal drive unit. Liquid crystal display device. 4. The voltage generating means includes voltage dividing means for dividing the reference voltage by a plurality of resistors to generate a plurality of voltages for each type of the liquid crystal display section, and the selecting means comprises a plurality of the plurality of voltage dividing means. The drive voltage is selected by appropriately selecting one from the voltage dividing means.
4. The liquid crystal display device according to claim 3. 5. A liquid crystal display device comprising: a liquid crystal display unit; and a plurality of types of sub-units that are detachably attached to the liquid crystal display unit and supply at least display data, wherein the liquid crystal display unit comprises: A liquid crystal display panel, a drive circuit for generating a drive signal for driving the liquid crystal display panel, a discriminating means for discriminating the type of the mounted sub-unit, and the drive corresponding to the type of the sub-unit. A control unit for driving and controlling the liquid crystal display panel via a circuit; and, the sub-unit is a tuner unit for receiving at least one TV radio wave, and the tuner unit is a TV radio wave of a predetermined broadcasting system. And a power supply unit that supplies a drive voltage to the drive circuit of the liquid crystal display unit, The source section appropriately selects a plurality of voltages from among a plurality of types of voltages generated by the voltage generation means and a plurality of types of voltages generated by the voltage generation means for generating a plurality of types of voltages required to drive the plurality of types of liquid crystal display panels for display drive. Selecting means for outputting the driving voltage to the driving circuit as a driving voltage, wherein the driving circuit generates the driving signal using the driving voltage supplied from the selecting means of the power supply section. Liquid crystal display device. 6. The liquid crystal display device according to claim 5, wherein the power supply unit further includes an amplifying unit that amplifies the driving voltage selected by the selecting unit and outputs the amplified driving voltage to the liquid crystal driving unit. 7. The voltage generating means includes voltage dividing means for dividing the reference voltage by a plurality of resistors to generate a plurality of voltages for each type of the liquid crystal display section, and the selecting means includes a plurality of voltage dividing means. 6. The drive voltage is selected by appropriately selecting one from the voltage dividing means.
Alternatively, the liquid crystal display device according to claim 6. 8. The liquid crystal display unit includes a type notifying unit that notifies the selecting unit of its own type, and the selecting unit determines the type of the liquid crystal display panel based on the notification from the type notifying unit. The liquid crystal display device according to claim 5, wherein a corresponding drive voltage is selected.