JPH0429275B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid crystal television device.

[Prior Art] In recent years, a liquid crystal television device that displays images using a dot matrix display type liquid crystal display panel has been developed as a television device that displays television images.

This liquid crystal television device has a structure in which a liquid crystal display panel, its display driving circuit, and other television device components are housed in a device case.

By the way, some of the above-mentioned liquid crystal television devices are equipped with a light reflecting plate on the back side of the liquid crystal panel to perform display using external light, and others are equipped with a light-emitting member on the back side of the liquid-crystal display panel. There are devices that use illumination light to display images, but LCD television devices that use external light to display images are
Since the display screen has the problem of being dark, in order to display a bright image with high brightness, it is desirable to arrange a lighting member on the back side of the liquid crystal display panel.

[Problem to be Solved by the Invention] However, in a conventional LCD television device, a liquid crystal display panel and a display driving circuit connected to the liquid crystal display panel by a flexible cable are each supported in the device case. Therefore, in order to arrange the lighting member on the back side of the liquid crystal display panel as described above, the lighting member must also be supported by the device case. Providing the above-mentioned illumination member has caused a problem in that it becomes extremely difficult to assemble the device. Furthermore, since the above-mentioned lighting member has a limited lifespan, it is necessary to replace this lighting member when the lifespan reaches the end. becomes troublesome.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to dispose a lighting member on the back side of a liquid crystal display panel, but to eliminate the need for a liquid crystal display panel and a display driving circuit. To provide a liquid crystal television device in which the device and the lighting member can be assembled together into a device case to facilitate assembly of the device, and the lighting member can be easily replaced.

[Means for Solving the Problems] A liquid crystal television device of the present invention includes a display including a liquid crystal display panel, a display driving circuit, and a lighting member for illuminating the liquid crystal display panel from the back side thereof, in a device case. unit and a lighting member driving circuit for driving the lighting member, and the display unit has side walls on at least both sides, and a space between the side walls is defined as a space for accommodating the lighting member. The liquid crystal display panel is arranged and fixed on a frame having a light-emitting member insertion portion that is open from the space to the outside, and the display driving circuit is arranged on the frame avoiding the light-emitting member insertion portion, and the display driving circuit A circuit is connected to the liquid crystal display panel, and the light emitting member is inserted into the light emitting member accommodating space of the frame from the light emitting member insertion portion of the frame to face the liquid crystal display panel, and the light emitting member is The present invention is characterized in that a lead wire is connected to the light emitting member drive circuit through the light emitting member insertion portion of the frame.

[Function] According to the liquid crystal television device of the present invention, since the liquid crystal display panel, the display driving circuit, and the illumination member for illuminating the liquid crystal display panel from the back side are integrated into one display unit, these liquid crystal display panels The display drive circuit, and the illumination member can be integrated into the device case, making it easy to assemble the device.

Moreover, in the present invention, the display unit is provided with a liquid crystal display in a frame having side walls on at least both sides, a space between the two side walls serving as a space for accommodating a light member, and a light member insertion portion that opens to the outside from the space for accommodating a light member. In addition to arranging the display panel and the display driving circuit, the illumination member is inserted into the illumination member storage space of the frame, and this illumination member is opposed to the liquid crystal display panel, so it is easy to assemble the display unit. .

Further, in the present invention, a liquid crystal display panel is arranged and fixed on the frame, and a display driving circuit is arranged on the frame avoiding the illumination member insertion part,
This display driving circuit is connected to the liquid crystal display panel, and the light emitting member is inserted into the light emitting member housing space of the frame from the light emitting member insertion portion of the frame, and the lead wire of the light emitting member is
Since the lighting member is connected to the lighting member drive circuit through the lighting member insertion portion of the frame, the lighting member accommodated in the lighting member storage space of the frame can be pulled out of the frame from the lighting member insertion portion of the frame. Therefore, the lighting member can be easily replaced.

[Example] Hereinafter, an example in which a specific example of the present invention is applied to a liquid crystal television receiver will be described with reference to the drawings.

FIG. 2 shows the external appearance of the liquid crystal television receiver of this embodiment. In the figure, 10 is the device case (receiver case) of the liquid crystal television receiver.
A television image display window 12 and a sound emitting section 13 are provided on the front side of the case 10. A glass plate 14 is attached to the display window 12, and the sound emitting section 13 has a large number of small holes 15, 15 for sound emitting.
is drilled. Further, on the upper edge side of the case 10, a slide switch operation knob 16 that serves as a power switch and a VHF-UHF changeover switch is provided, and as shown in FIG. An external power supply connection port 17 and an external antenna (e.g. outdoor antenna) connection port 18 used when using the DC power supply (battery box sold as an accessory part of the television receiver in this embodiment) and a hand A latching hole 19 for a strap is provided. Although the hand strap is not shown,
It has a latching fitting that is detachably latched onto a pin 20 provided in the hand strap latching hole 19.

Next, the internal configuration of this television receiver will be explained.

First, the circuit configuration of the television receiver shown in FIG. 4 will be explained. In this television receiver, the circuit board is the antenna board 100,
It is divided into an operation unit board 110, a linear board 120, a power supply circuit board 130, a display drive control circuit board 140, and a display drive circuit board 150, and each board 100-
150 constitutes a circuit that will be described later. In addition to the above boards 100 to 150, tuner 16
0, speaker 170, panel type image display device 18
0 is set. The panel type image display device 180 is a dot matrix liquid crystal display panel 18.
A lighting member 182 for illuminating this liquid crystal display panel 181 is arranged on the back side of 1. In this embodiment, an electroluminescence (EL) lighting panel (hereinafter referred to as a lighting panel) is used as the lighting member 182. ing. The dot matrix liquid crystal display panel 181 is of a double matrix type with a display dot count of 120 x 160 and of a TN (twisted nematic) type which is driven at a duty of 1/65.6. This double matrix type liquid crystal display panel has scanning side electrodes with a width equivalent to two display dots, and two signal side electrodes facing each other in the width direction of each scanning side electrode. If 181 is a double matrix method, the number of scanning side electrodes, that is, the number of scanning lines is 120.
It requires only 60 pieces, which is half the number of books, and the circuit configuration for driving the display becomes simpler. This dual matrix type liquid crystal display panel is driven for display at a duty of 1/65.5.

Furthermore, the reason why the lighting panel 182 is provided on the back side of the liquid crystal display panel 181 is that the lighting panel 182 illuminates the liquid crystal display panel 181 from the back side.
This is to display an easy-to-see image with a bright screen and good contrast even if it is a double matrix type (see specification of Utility Model Application No. 57-20796).

A rod antenna 21 provided in the receiver and an external antenna connection jack are connected to the antenna board 100. The television radio waves received by the rod antenna 21 or external antenna are transmitted to the tuner 16.
Sent to 0. Further, the operating board 110 is provided with a tuning knob 61 for selectively operating television radio waves, and the operating signal is sent to a circuit configured on the linear board 120.
The linear board 120 includes a tuner power supply circuit 1
21, tuning control circuit 122, filter circuit 123, linear circuit 124, audio amplification circuit 12
5 is provided. The tuning control circuit 12
2 provides a tuning signal to the tuner 160 in accordance with the operation signal from the tuning knob 61. This tuner 160 is connected to the rod antenna 21.
Alternatively, television waves received by an external antenna are selected according to a tuning signal from a tuning control circuit 122, converted to an intermediate frequency, and outputted to the filter circuit 123. This filter circuit 123 passes only the frequency component of the desired channel selected by the tuner 160 and removes the frequency component of the adjacent channel. Then, the linear circuit 124 amplifies the intermediate frequency signal output from the filter circuit 123, performs video detection, and separates the video signal, audio signal, and synchronization signal. The audio signal output from the linear circuit 124 is amplified by the audio amplification circuit 125 and then sent to the speaker 170.
and output as audio. Further, the synchronization signal output from the linear circuit 124 is sent to a circuit configured on the power supply circuit board 130,
The video signal and synchronization signal are sent to the display drive control circuit board 1.
The signal is sent to a circuit configured as 40. The power supply circuit board 130 is provided with a power supply circuit 131 and a lighting panel drive circuit 132.
1 supplies an operating voltage to the tuner power supply circuit 121 and a display driving power supply circuit 144, which will be described later.
Further, the illumination panel drive circuit 132 supplies a light emission operating voltage to the illumination panel 182 via a communication circuit 145 formed on the display drive control circuit board 140 based on the synchronization signal from the linear circuit 124, and A switching signal is applied to a circuit configured in 140. The display drive control circuit board 140 is provided with an analog/digital conversion circuit (hereinafter referred to as an A/D converter) 141, an auto level control circuit 142, a display drive control circuit 143, and a display drive power supply circuit 144. The display drive power supply circuit 144 has an output voltage controlled ON/OFF by a switching signal from the illumination panel drive circuit 132.
The output voltage is determined by the display drive circuit 1 configured in the display drive control circuit 143 and the display drive circuit board 150.
51 as operating power. The auto level control circuit 142 includes the linear circuit 12
Detect the level of the video signal from 4 and set the upper limit reference potential.
V _H and lower limit reference potential V _L to A/D converter 14
Give to 1. This A/D converter 141 is connected to the linear circuit 12 by the reference potentials V _H and V _L.
The video signal from 4 is converted into 4-bit 16-gradation digital data and input to the display drive control circuit 143. This display drive control circuit 143 operates in synchronization with the synchronization signal from the linear circuit 124, supplies a drive signal to the scanning side electrode of the dot matrix liquid crystal display panel 181, and supplies the A/D to the signal side display drive circuit 151. Outputs 4-bit data from converter 141. The display drive circuit 151
supplies a drive signal to the signal side electrode of the liquid crystal display panel 181 in accordance with the above 4-bit data. Further, the power supply circuit 131 connects the display drive control circuit board 140 to the display drive control circuit board 140 via a booster circuit that boosts the power supply voltage.
the display drive power supply circuit 144, the illumination panel drive circuit 132, and the linear circuit 1 of the linear board 120.
The voltage is supplied to 24 and 24.

FIG. 5 shows each of the substrates 100 to 150 shown in FIG.
This figure shows the connection between the tuner 160 and the image display device 180, in which a flexible substrate 200 led out from the side of the display drive control circuit board 140 is connected to the scanning side electrode terminal of the liquid crystal display panel 181 by thermocompression bonding. , flexible substrates 201, 201 led out from the display drive circuit board 150 are connected to the signal side electrode terminals of the liquid crystal display panel 181, and lead wires 182a of the illumination panel 182 are formed on the display drive control circuit board 140. The lighting panel 182 is connected to the connected communication circuit 145 (see FIG. 4) by soldering.
It is connected to the lighting panel drive circuit 132 of the power supply circuit board 130 via the communication circuit 145 and the flexible cable 203. In addition, a display drive control circuit board 140 and a display drive circuit board 15
0 are connected to each other by thermocompression bonding of a flexible cable 202. That is, the image display device 180 (liquid crystal display panel 181 and illumination panel 182), the display drive control circuit board 140, and the display drive circuit board 150 are connected to each other and put together as a display unit A. Also,
The power supply circuit board 130 is a single power supply circuit unit B, and the display drive control circuit board of the display unit A is connected to the display drive control circuit board of the display unit A via one flexible cable 203 soldered to the connection part thereof. It is removably contact-connected to 140 and fixedly connected to linear substrate 120 by soldering. The linear board 120 and the tuner 160 constitute a linear unit C and a tuner unit D, respectively, and the tuner 160 has one flexible cable 20 soldered to its connection part.
4, it is removably contact-connected to the operating unit board 110, and is fixedly connected to the linear board 120 by soldering.
Furthermore, the tuner 160 and the antenna board 100
and are connected to each other by soldering via lead wires 205.

FIG. 6 shows the inside of the receiver case 10 of the power supply circuit unit B consisting of the power supply circuit board 130, the linear unit C consisting of the linear board 120, the tuner unit D consisting of the tuner 160, the operation section board 110, and the antenna board 100. It shows the placement position in .

To specifically explain the internal structure of the television receiver having the above circuit configuration, in FIGS. 1 and 3, 10a is the front case of the receiver case 10, 10b is the middle case, and 10c is the back case. , 14 are glass plates attached to the image display window 12 of the front case 10a. 21 is a rod antenna, and this rod antenna 21 is inserted and stored in an antenna storage groove 46 provided on the mating surface of the intermediate case 10b and the back case 10c, and is screwed to the inner surface of the antenna drawer side of the back case 10c. It is slidably held in an antenna holding cylinder 47. Further, a stopper flange 50 is attached to the base end of the rod antenna 21 at the rear end via a hinge 48.
An antenna terminal tube 49 is attached to the rod antenna 2.
1, it slides in the antenna storage groove 46 and is fitted into the antenna holding cylinder 47 until the stopper flange 50 touches the antenna holding cylinder 47, and is electrically connected to the antenna holding cylinder 47. It is becoming more and more like this. Further, the antenna holding cylinder 47
The back case 10c is stacked on the terminal plate 47a.
It is electrically connected by contact to an antenna board 100 which is screwed together with the antenna board 100, and an external antenna connection jack 51 is soldered to the antenna board 100 so as to face the external antenna connection port 18 on the side surface of the case. It is installed accordingly. The hinge 48 between the rod antenna 21 and the antenna terminal tube 49 is designed to protrude outside the case 10 as shown in FIG. 2 when the rod antenna 21 is pulled out of the case 10. The angle of the rod antenna 21 pulled out can be changed freely and over a wide range using a hinge 48 as a fulcrum. Further, the back case 10c is formed with a battery chamber 52 that opens on the back surface, and this battery chamber 52 has three
The AA batteries of the book are stored side by side in series connection.

On the other hand, in FIG. 1, 58 is the intermediate case 10.
The chassis 58 is integrally formed with the chassis 58, and the operating section board 110, the speaker 170, the tuning knob 61, and the volume adjustment knob 62 are attached to the chassis 58, and are assembled as a chassis unit E. Reference numeral 171 denotes buffer bodies provided above and below the speaker 170, and the speaker 170 is housed in a speaker storage portion 59 formed in the chassis 58, and is held down by fasteners 60, 60 screwed to the chassis 58. It is being

FIG. 7 shows the assembled chassis unit E. The chassis 58 has a tuning knob 61, a volume adjustment knob 62, a speaker 170, a tuning dial 63, and a threading pulley 64 arranged as shown in the figure. , 64 are provided, and the tuning dial 63
The dial portion is adapted to be rotated via a thread 65 by turning a tuning knob 61. Further, the thread 65 is connected to the thread hook pulley 6.
4 and 64 as shown in the figure, and a channel selection pointer 66 is attached to this thread 65. Note that 67 is a guide for the pointer 66 and is formed integrally with the chassis 58. Further, the terminal 62a of the volume adjustment knob 62 and the terminal 63a of the tuning dial 63 are soldered to the operating unit board 110 (not shown in FIG. 7). Further, the operation unit board 110 includes:
As shown in Figure 1, the power switch and VHF-
A slider 16a of a slide switch that also serves as a UHF changeover switch is in contact with it. This slider 1
6a is moved by an operating knob 16 provided in the case 10 as shown in FIG. moreover,
In FIG. 1, 68 is an earphone jack, and this earphone jack 68 has an earphone connection port (not shown) provided on the side surface of the case 10 opposite to the side surface on which the external antenna connection port 18 etc. are provided. (1) is soldered to the operation unit board 110 so as to face each other.

Further, in FIG. 1, reference numeral 69 is an external power supply connection jack provided opposite to the external power supply connection port 17 on the side surface of the case, and this jack 69 is soldered to the power supply circuit board 130.

The power supply circuit board 130 and the linear board 120
The tuner 160 and the tuner 160 are arranged on the back side of the chassis unit E as shown in FIG. 3, and the display unit A is arranged on the front side of the chassis unit E.

Next, the display unit A will be explained.

As shown in FIGS. 8 to 11, this display unit A includes a liquid crystal display panel 181 and two circuit boards (a display drive control circuit board 140 and a display drive circuit board 150) that constitute a display drive circuit. )
The liquid crystal display panel 181 is integrated into one unit with a lighting panel 182, which is a lighting member that illuminates the liquid crystal display panel 181 from the back side thereof. It is attached to the frame 70 of unit A.

As shown in FIG. 8, the frame 70 is plate-shaped and has side walls 70a on both sides and one end, and the space between the side walls 70a on both sides is a lighting member storage space 70b. The other end surface of the frame 70 is an opening surface without a side wall, and the other end surface is a lighting member insertion portion (an insertion port for the lighting panel 182) that opens to the outside from the lighting member storage space 70b. ) 70c.

The liquid crystal display panel 181 is arranged on the frame 70, and both sides of the liquid crystal display panel 181 are stacked on the upper surface of the side walls 70a on both sides of the frame 70, and the double-sided adhesive tape 71
It is adhesively fixed to the frame 70 by. Further, the light panel 182 is connected to the frame 70.
The light emitting member insertion portion 70c is inserted into the light emitting member storage space 70b of the frame 70, and the light emitting member is disposed opposite to the back surface of the liquid crystal display panel 181.
The lead wire 182a of this lighting panel 182 is guided out of the frame 70 through the lighting member insertion portion 70c of the frame 70.
2a is soldered to the communication circuit 145 (see FIG. 4) of the display drive control circuit board 140, and the display drive control circuit board 140 and the power supply circuit board 1
30 is connected to the illumination panel drive circuit 132 of the power supply circuit board 130 via a flexible cable 203 that connects the power supply circuit board 130 with the power supply circuit board 130. Furthermore, on the lower surface of the frame 70, there are four signal-side electrode drive
A display drive circuit board 150 having LSIs 72a, 72b, 72c, and 72d on its surface is disposed, and a display drive control circuit board 140 having one scan-side electrode drive LSI 72e is stacked on its back surface. . Then, the display drive control circuit board 14
A flexible substrate 201 that is thermocompression bonded to the side of the substrate 1 and led out from this circuit board 140 is connected to a terminal of a scanning side electrode of a liquid crystal display panel 181 by thermocompression bonding. Further, the display drive circuit board 150 is a flexible film board with a reinforcing plate 150a glued to the back surface, and both sides of the film board are extended to an appropriate length from the display drive circuit 150 portion reinforced with the reinforcing plate 150a. This is used as a flexible substrate 200 for connecting a display panel. And, this flexible substrate 200 is
The signal side electrode is superimposed on the signal side electrode terminal of the liquid crystal display panel 181 from a direction perpendicular to the flexible substrate 201 on the display drive control circuit board 140 side, and is attached to the frame 70 with a set screw 74 by a holding plate 73. is connected to the terminal of the In addition, in FIG. 8, 75 is the presser plate 7.
This is a rubber material that comes into contact with the flexible substrate contact surface of No. 3.

Furthermore, the liquid crystal display panel 181 divides its signal electrode group into four blocks, and connects the four signal side electrode driving LSIs of the display driving circuit board 150.
Each block is driven to display by 72a, 72b, 72c, and 72d. This is done for the following reasons.

That is, in this embodiment, since the dot matrix liquid crystal display panel 181 is of the double matrix type as described above, the number of signal side electrodes is 320. The total number of terminals is 320 + α (here α is the number of terminals for inputting control signals, etc.).
Although LSI is required, large-scale multi-terminal
LSIs are quite expensive and lack versatility, so using large LSIs with multiple terminals is disadvantageous in terms of cost. Therefore, in this embodiment, the screen of the double matrix dot-to-machine liquid crystal display panel 181 is divided into four 1/4 blocks a, b, c, and d as shown in FIG. Terminals Y ₁ to _{Y 80} of the signal side electrodes of b, c, d,
Y′ ₁ to Y′ ₈₀ , Y ₈₁ to Y ₁₆₀ , Y′ ₈₁ to Y′ ₁₆₀ are connected to the four signal side electrode driving LSIs 72a, 72b, 72c,
72d respectively to connect the liquid crystal display panel 181.
The screen is driven 1/4 screen at a time. In this way, the LSIs 72a, 72b, 72c,
72d can be a small one with 100 terminals, and this
100-pin LSIs are highly versatile and inexpensive, making it possible to reduce costs. Further, since the number of scanning electrodes of the double matrix type dot tomato crystal liquid crystal display panel 181 is 60, the scanning side electrode drive provided on the display drive control board 140
The LSI72e may also be one with 100 pins. Figure 13 shows the liquid crystal display panel 181 and signal side electrode drive.
The connection state with the LSIs 72a, 72b, 72c, 72d and the scanning side electrode driving LSI 72e is shown.

In addition, the four signal side electrode driving LSIs 72
When arranging a, 72b, 72c, and 72d on the display drive circuit board 150, in the normal mounting method,
The printed wiring that connects the LSIs on the circuit board 150 and the printed wiring that connects to the terminals of the signal side electrodes of the liquid crystal display panel 181 are mixed together, making the routing of the printed wiring complicated, and the circuit board 150 is also large. Therefore, in this embodiment, as shown in FIG.
2c and 72d are arranged so as to be line symmetrical to each other, and furthermore, the LSIs 72b and 72d have their respective terminals formed forward and attached to the circuit board 150, and the terminals of LSIs 72a and 72c are respectively formed reversely and attached to the circuit board 150 upside down. It is installed on 150. In addition, in the figure, 1 → 20, 21 →
50, 51 → 70, 71 → 100 are each LSI72
Terminal numbers a, 72b, 72c, and 72d are shown. In this way, the four LSIs 72a, 72
If you place b, 72c, and 72d, the paired LSI
Since the common terminals 51 to 70 of 72a and 72b and 72c and 72d can be connected by the shortest distance printed wiring 76, 76, it is possible to simplify the wiring of printed wiring on the circuit board surface and reduce the size of the circuit board 150. Can be made smaller.

FIG. 15 shows the electrical connections of the units A to E. The electrical connections of the units A to E are made when the units A to E are assembled into the case 10. That is, to assemble the television receiver, first set the tuner unit D, linear unit C, and power supply circuit unit B in the chassis unit E, and then connect the flexible cable 2 that has been connected to the power supply circuit unit B in advance.
04 is brought into contact with the operation board 110 of the chassis unit E and held and fixed by the tuner 160 as shown in FIG. is sandwiched between the chassis 58 of chassis unit E and the display drive control circuit board 140 of display unit A, as shown in FIG. The antenna board 100 attached to the antenna board 10c and the power circuit unit B were connected to a battery contact terminal (not shown) provided in the battery chamber 52 of the rear case 10c by soldering lead wires 205 and 206, respectively. Later, the front case 10a is screwed to the chassis 58 of the chassis unit E, and the back case 10c is further screwed to the chassis 58.

In this portable television receiver, the circuit device is divided into display unit A, power supply circuit unit B, linear unit C, tuner unit D, and chassis unit E. A television receiver can be assembled by simply assembling the units A to E individually and storing them in the case 10 after connecting them. , tuner unit D, linear unit C, and power supply circuit unit B are connected to the chassis unit E.
Since they are arranged on the back side of the unit, these five units A to E can be arranged three-dimensionally and mounted with high density.

In the above-mentioned liquid crystal television receiver, the liquid crystal display panel 181, the display driving circuit configured, and the illumination panel 182 that illuminates the liquid crystal display panel 181 from the back side thereof are combined into one display unit A. Therefore, these liquid crystal display panel 181, display driving circuit, and lighting panel 182
and can be incorporated into the case 10 all at once,
Therefore, the receiver can be easily assembled.

Moreover, in the liquid crystal television receiver, the display unit A is mounted on both sides and at one end of the side wall 70a.
A lighting member storage space 70b is formed between the walls 70a on both sides, and this lighting member storage space 70
A liquid crystal display panel 181 and display drive circuits (display drive control circuit board 140 and display drive circuit board 150) are disposed in a frame 70 having a lighting member insertion portion 70c opened to the outside from b. Lighting member storage space 70b
Insert the lighting panel 182 into the lighting panel 1.
Since the display unit 82 faces the liquid crystal display panel 181, assembly of the display unit A is also easy.

Further, in the above-mentioned liquid crystal television receiver, the liquid crystal display panel 181 is arranged and fixed on the frame 70, and the display driving circuit is arranged in the frame 70 avoiding the illumination member insertion part 70b. is connected to the liquid crystal display panel 181, the lighting panel 182 is inserted into the lighting member storage space 70b of the frame 70 from the lighting member insertion portion 70c of the frame 70, and the lead wire 182a of the lighting unit panel 182 is connected to the lighting member insertion portion 70c of the frame 70. , the frame 70 is connected to the lighting member drive circuit 132 through the lighting member insertion portion 70c of the frame 70.
The lighting panel 182 stored in the lighting member storage space 70b of the frame 70 is inserted into the lighting member insertion portion 70c of the frame 70.
The light panel 182 can be pulled out from the frame 70, and therefore the light panel 182 can be easily replaced.

In the above embodiment, the frame 70 of the display unit A has the side walls 70a on both sides and one end.
The display unit A may have a lighting member storage space 70b in between and a lighting member insertion portion 70c that is open to the outside from the lighting member storage space 70b. Place and fix the frame 70
A display driving circuit is arranged avoiding the lighting member insertion portion 70b, and this display driving circuit is connected to the liquid crystal display panel 181, and the lighting member (not limited to the lighting panel 182 of the above embodiment) is The structure is not limited to the above embodiment as long as it is inserted into the lighting member storage space 70b of the frame 70 through the lighting member insertion portions 70c, b of the frame 70 and placed opposite to the liquid crystal display panel 181.

[Effects of the Invention] The liquid crystal television device of the present invention has a liquid crystal display panel, a display driving circuit, and a lighting member for illuminating the liquid crystal display panel from the back side thereof into one display unit. The liquid crystal display panel, the display driving circuit, and the illumination member can be integrated into the device case, making it easy to assemble the device.

Moreover, in the present invention, the display unit is a frame liquid crystal display panel having side walls on at least both sides, a space between the two side walls serving as a lighting member storage space, and a lighting member insertion portion opened from the lighting member storage space to the outside. Since the display drive circuit and the display drive circuit are arranged, and the light emitting member is inserted into the light emitting member housing space of the frame and facing the liquid crystal display panel, assembly of the display unit is easy.

Further, in the present invention, a liquid crystal display panel is arranged and fixed on the frame, and a display driving circuit is arranged on the frame avoiding the illumination member insertion part,
This display driving circuit is connected to the liquid crystal display panel, and the light emitting member is inserted into the light emitting member housing space of the frame from the light emitting member insertion portion of the frame, and the lead wire of the light emitting member is
Since the lighting member is connected to the lighting member drive circuit through the lighting member insertion portion of the frame, the lighting member accommodated in the lighting member storage space of the frame can be pulled out of the frame from the lighting member insertion portion of the frame. Therefore, the lighting member can be easily replaced.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an exploded view of a liquid crystal television receiver, FIGS. 2 and 3 are an external view and an enlarged vertical side view of the liquid crystal television receiver, and FIG. Figure 4 is a block diagram showing the receiver circuit, Figure 5 is a connection diagram of each board shown in Figure 4, the tuner, and the liquid crystal display panel, and Figure 6 is a diagram showing the power supply circuit unit, linear unit, tuner unit, operation board, and Antenna board layout diagram,
FIG. 7 is an enlarged front view of a portion of the chassis unit, FIGS. 8 and 9 are exploded views and front views of the display unit, and FIGS. 10 and 11 are Y--
Figure 12 is an enlarged front view of the display panel, Figure 13 is a connection diagram between the display panel and display driving LSI, and Figure 14 is an enlarged view of the display driving circuit board. 15 are connection diagrams of each unit. 10...Case, 10a...Front side case, 10b...
Intermediate case, 10c... Back case, A... Display unit, 70... Frame, 70a... Side wall, 70b...
Lighting member storage space, 70c...Lighting member insertion portion, 1
81...Liquid crystal display panel, 182...Lighting panel, 1
82a... Lead wire, 140... Display drive control circuit board, 143... Display drive control circuit, 150... Display drive circuit board, 151... Display drive circuit, 130... Power supply circuit board, 132... Lighting panel drive circuit.

Claims (1)

[Scope of Claims] 1. A display unit that includes a liquid crystal display panel, a display driving circuit, and a lighting member that illuminates the liquid crystal display panel from the back side thereof, in a device case, and a lighting member that drives the lighting member. and a drive circuit, and the display unit has side walls on at least both sides, and defines a space between the two side walls as a space for accommodating a lighting member, and a lighting member insertion portion that is open to the outside from the space for accommodating a lighting member. arranging and fixing the liquid crystal display panel on a frame having a frame, arranging the display drive circuit on the frame avoiding the illumination member insertion portion, and connecting the display drive circuit to the liquid crystal display panel; The light emitting member is inserted into the light emitting member accommodating space of the frame from the light emitting member insertion portion of the frame and disposed opposite to the liquid crystal display panel, and the lead wire of the light emitting member is inserted into the light emitting member insertion portion of the frame. A liquid crystal television device, characterized in that it is connected to the illumination member drive circuit through a. 2. The frame of the display unit has side walls on both sides and one end, and a lighting member insertion portion at the other end, and the display driving circuit is arranged under the frame and on the side where the lighting member insertion portion is not provided. 2. The liquid crystal television device according to claim 1, wherein the liquid crystal television device is connected to a liquid crystal display panel at the front and end portions.