JP2001184000A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color display device saving the power consumption of the display device as a whole by reducing the power that has conventionally been consumed at the time of displaying an unfixed image. SOLUTION: A dot matrix display area A where display electrodes are arranged in a matrix form and a periphery driving circuit is arranged for supplying driving signals to display electrodes, and a segment display area B consisting of segment electrodes are provided on one insulating substrate 10, and power consumption is reduced by displaying unfixed images like moving images on the dot matrix display area A and displaying fixed images like patterns or the like for displaying a residual amount of battery on the segment display area B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device with low power consumption.

[0002]

2. Description of the Related Art In recent years, a display device is a portable display device,
For example, portable televisions, portable telephones, and the like are demanded as market needs, and research and development are being actively conducted in response to demands for miniaturization, weight reduction, and power saving. FIG.
Shows a plan view of a conventional display device, and FIG. 12 shows an equivalent circuit diagram of the conventional display device.

As shown in FIGS. 11 and 12, a liquid crystal display panel 100 has a gate driver 50 composed of an external IC chip for supplying a gate signal on an insulating substrate 10.
There are a plurality of gate signal lines 51 connected to 0 and a plurality of drain signal lines 61 connected to a drain driver 600 composed of an external IC chip for supplying a drain signal. In the vicinity of the intersection of the two signal lines 51 and 61, display pixels 200 are arranged in a matrix. Each display pixel 200 has a thin film transistor (Thin Film Transistor) connected to both signal lines 51 and 61. Hereinafter, this is referred to as “TFT.”) 70 and a display electrode 80 connected to the TFT 70 are arranged.

The gate driver 500 and the drain driver 600 are provided not on the same substrate as the liquid crystal display panel 100 but on another substrate, for example, a flexible substrate, and these drivers 500 and 600 are respectively provided with drivers from the external LSI 91. Signal input units 502 and 602 for scanning signals and the like are provided. In addition, external LS
From I91, a control signal such as a start signal and a clock signal, and a video signal are input to the gate driver 50 and the drain driver 60.

The sampling transistor SP is turned on in response to the sampling signal based on the start signal, and the data signal on the data signal line 62 is supplied to the drain signal line 61. Further, a gate signal is input from the gate signal line 51 to the gate electrode 13, and the TFT 70 is turned on. As a result, a drain signal is applied to the display electrode 80 via the TFT 70. At the same time, a drain signal is also applied to the auxiliary capacitor 85 via the TFT 70 to hold the voltage applied to the display electrode 80 for one field period. One electrode 86 of the storage capacitor 85 is connected to the source 11 of the TFT 70.
s, and the other electrode 87 is connected to each display pixel 20.
At 0, a common potential is applied.

When the gate of the TFT 70 is opened and a drain signal is applied to the liquid crystal 21, it must be held for one field period, but the voltage of the signal of the liquid crystal alone gradually decreases over time. Then, it appears as display unevenness, and good display cannot be obtained. Therefore, an auxiliary capacitor 85 is provided to hold the voltage for one field period.

An opposing electrode is formed on the substrate opposing the display electrode 80, and a common voltage CO is applied to each display pixel.
M is applied. In this manner, when the voltage applied to the display electrode 80 is applied to the liquid crystal 21, the liquid crystal 21 is oriented according to the voltage to obtain a display.
Here, an image is displayed on the display panel of the dot matrix display area A using the liquid crystal display panel 100.

Hereinafter, a liquid crystal display device forming a dot matrix display area will be described. FIG. 13 is a partial cross-sectional view of the liquid crystal display device in the dot matrix display area in FIG. As shown in FIG. 13, one of the insulating substrates 10
On the semiconductor layer 11 made of polycrystalline silicon,
A gate insulating film 12 is formed thereon, and a gate electrode 13 is formed on the gate insulating film 12 above the semiconductor layer 11.

A source 11 s and a drain 11 d are formed in the lower semiconductor layer 11 located on both sides of the gate electrode 13. An interlayer insulating film 14 is deposited on the gate electrode 13 and the gate insulating film 12, and a contact hole 15 is formed at a position corresponding to the drain 11d and a position corresponding to the source 11s. The drain 11d is connected to a drain electrode 16, and the source 11s is connected to a display electrode 19 via a contact hole 18 provided in a planarization insulating film 17 provided on the interlayer insulating film 14.

Each display electrode 19 formed on the flattening insulating film 17 is made of a reflective material such as aluminum (Al). An alignment film 20 made of polyimide or the like for aligning the liquid crystal 21 is formed on each of the display electrodes 19 and the flattening insulating film 17. On the other insulating substrate 30, red (R),
A color filter 3 that exhibits green (G) and blue (B) colors
1. Counter electrode 32 made of a transparent conductive film such as ITO (Indium Tin Oxide), and alignment film 33 for aligning liquid crystal 21
Are formed in order. When color display is not performed, the color filter 31 is unnecessary.

The pair of insulating substrates 1 thus formed
The periphery of 0, 30 is adhered with an adhesive sealing material, and the gap formed thereby is filled with the liquid crystal 21 to complete the reflection type liquid crystal display device. As shown by the dotted arrows in FIG. 13, external light incident from the observer 1 side sequentially enters from the counter electrode substrate 30, is reflected by the display electrode 19, exits to the observer 1 side, and displays images on the observer 1 side. 1 can be observed.

As described above, the dot matrix display area A
Are provided with a TFT which is a switching element and a display electrode 80 connected to the TFT, and a display is obtained in each display pixel 200 by these.
For example, as shown in FIG.
0 is used as a display unit of a mobile phone, and a fixed image display such as an antenna indicating the reception sensitivity status of the mobile phone and a battery pattern indicating the remaining battery power is provided in a part thereof, and a moving image such as a message and a non-fixed image are displayed. Display can be displayed.

[0013]

However, the LSI 91 of the external circuit board 90 and the drivers 50 and 60 are required for displaying either the fixed image display or the non-fixed image display.
In the dot matrix display area A, that is, the liquid crystal is applied with an AC voltage applied to the liquid crystal by inverting the polarity of the counter electrode and the video signal every one horizontal scanning period. Display is performed on the entire display panel 100.

Therefore, the drivers 50 and 60 and the external LSI 91 always consume power, and the power consumption of the liquid crystal display device is large.
However, there is a drawback that a mobile phone having a limited power supply, such as a battery, having a limited power supply, such as a battery, has a short usable time. That is, there is a drawback that power is consumed even when a fixed image is displayed, as in the case where a non-fixed image is always displayed.

The color filter shown in FIG. 13 is common to the dot matrix display area A and the segment display area B. That is, in the dot matrix display area, the colors are displayed by associating one display pixel with one color filter, which is a color filter composed of three colors of R, G, and B. Therefore, when a color corresponding to the remaining amount of the battery is displayed on each of the segment electrodes 150 in the segment display area B that displays, for example, the design of the battery, only one of the colors R, G, and B is displayed. There was a drawback that it was not possible.

Accordingly, the present invention has been made in view of the above-mentioned conventional drawbacks, and reduces the power conventionally consumed when displaying a non-fixed image, thereby reducing power consumption as a whole display device. It is another object of the present invention to provide a display device that displays colors corresponding to segment electrodes in a segment display area.

[0017]

According to the present invention, there is provided a display device comprising: a dot matrix display region provided with a display electrode arranged in a matrix and a peripheral drive circuit for supplying a drive signal to the display electrode; A display device having a display region and a display region on the same substrate, wherein one of the segment electrodes includes a multi-segment electrode divided into a plurality of regions, and a color filter is provided corresponding to each of the multi-segment electrodes. Display device.

Further, the display device of the present invention comprises a dot matrix display area provided with a peripheral drive circuit for arranging display electrodes in a matrix and supplying a drive signal to the display electrodes, and a segment display area comprising segment electrodes. A display device provided on the same substrate, wherein each of the regions is provided with a color filter, and the color filter is provided with a plurality of color regions for one of the segment electrodes.

In the above-mentioned display device, a dot matrix display area provided with a peripheral drive circuit for arranging display electrodes in a matrix and supplying a drive signal to the display electrodes and a segment display area comprising segment electrodes are formed on the same substrate. It is provided above. Further, the above-described display device is a display device in which a signal applied to a counter electrode disposed to face the display electrode and the segment electrode is shared in both display regions. Accordingly, it is possible to prevent the area of the display device from being increased by arranging a plurality of wirings on the substrate to supply different counter electrode signals, and to provide a counter electrode signal generation circuit to generate a plurality of counter electrode signals. There is no need to increase the cost, and the cost can be reduced.

Further, the above-mentioned display device is a display device in which a signal applied to a counter electrode disposed opposite to the display electrode and the segment electrode is a different counter electrode signal in both display areas. As a result, in the dot matrix display area, the counter electrode signal is inverted in response to the inversion of the data signal every one horizontal scanning signal period, so that the power consumption increases accordingly. Need only be inverted every field period, so that power consumption can be reduced.

In the above display device, a gate driver for supplying a gate signal to a plurality of gate signal lines and a drain driver for supplying a drain signal to a plurality of drain signal lines are arranged in the dot matrix display area. A switching element is provided near an intersection of the gate signal line and the drain signal line, and the switching element is a display device connected to the display electrode. This makes it possible to form a dot matrix display area on the same substrate as the segment display area, and it is possible to make one input for each signal wiring.

The above-described display device is a display device that displays a fixed image in an area where the segment electrodes are arranged, and displays a non-fixed image in an area where the display electrodes are arranged.
This makes it possible to reduce power consumption in the fixed image area.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A display device according to the present invention will be described below. FIG. 1 is a plan view of a display device of the present invention, and FIG. 2 is an equivalent circuit diagram of the display device. Although only the main drain signal lines 61 are shown in FIG. 2 for the sake of convenience of explanation, in actuality, there are several hundreds, for example.

As shown in FIGS. 1 and 2, the insulating substrate 1
0, a dot matrix display area A in which display electrodes 200 are arranged in a matrix, and a segment display electrode 15
And a segment display area B consisting of 0. Each signal applied to each of the display areas A and B is input from the input unit 170. In the dot matrix display area A, a non-fixed image such as a moving image is displayed, and in the segment display area B, as shown in FIG. A fixed display image such as a symbol having the shape of is displayed.

First, the dot matrix display area A will be described. The liquid crystal display panel 100 in the dot matrix display area A has a gate driver 5 for supplying a gate signal.
0, a plurality of gate signal lines 51 are arranged in a row direction (horizontal direction), and a plurality of drain signal lines 6 connected to a drain driver 60 for supplying a drain signal.
1 are arranged in the column direction (vertical direction). That is, these drivers 50 and 60 are formed on the insulating substrate 10 on which the liquid crystal display panel 100 is formed. A display pixel 200 is arranged near each intersection of the two signal lines 50 and 60.

The display pixel 200 is provided with a TFT 70 and an auxiliary capacitor 85.
A display electrode 80 is connected to s, and an auxiliary capacitance electrode 85 for holding a voltage applied to the liquid crystal 21 is also connected to s. Each driver 50 from the external LSI 91,
The sampling transistor SP is turned on in response to a sampling signal based on a start signal for scanning the 60, and the data signal of the data signal line 62 is supplied to the drain signal line 61. Also, the gate signal is applied to the gate signal line 5
1 is input to the gate electrode 13 and the TFT 70 is turned on. As a result, a drain signal is applied to the display electrode 80 via the TFT 70. Thus, the rise and fall of the liquid crystal 21 are controlled.

The structure of the TFT 70 and the display electrode 80 arranged in the dot matrix display area A is the same as that of FIG.
Therefore, the description is omitted. The dot matrix display device used for the dot matrix display region A is not limited to the reflective liquid crystal display device as described above, but may be a transmission liquid crystal display device or an electroluminescent display device. The display device in the dot matrix display area A is capable of manufacturing peripheral drive circuits on the same substrate. Therefore, from the viewpoint of miniaturization and simplification of a process, a so-called active matrix using TFTs as switching elements is used. It is preferably a display device.

Here, the counter electrode 32 is provided on the substrate facing the display electrode 80, and the segment display area B
And a common voltage COM is applied.
This signal is inverted every horizontal scanning period. This is a signal in which the video signal is inverted every horizontal scanning period, and accordingly, the counter electrode voltage is also inverted every horizontal scanning period.

Next, the segment display area B including the segment electrodes 150 will be described. As shown in FIG. 2, on the same insulating substrate 10 on which the dot matrix display area A is formed, for example, as shown in FIG.
The liquid crystal 21 is filled between the liquid crystal 50 and the opposing electrode 32 arranged opposite to the segment electrode 150. The liquid crystal 21 is oriented according to the voltage applied to the segment electrode 150, and a fixed image is displayed.

Here, the counter electrode voltage of the counter electrode 32 is
As described above, the signal is applied to the counter electrode 32 as an inverted signal every horizontal scanning period. For example, to each of the four segment electrodes 150 forming the pattern of the antenna of FIG. 1, an inverted video signal voltage is applied every one horizontal scanning period input from the input unit 170. At this time, an inverted voltage is applied to the counter electrode 32 every horizontal scanning period.

Here, the structure of the segment display area B will be described. FIG. 3 is a cross-sectional view of a segment display panel constituting the segment display area B, FIG. 4 (a) shows a pattern indicating the remaining amount of the battery, and FIG.
FIG. 3A is an enlarged view of a symbol portion showing the remaining amount of the battery in FIG. As shown in FIG. 3, a gate insulating film 12 on an islanded semiconductor layer made of polycrystalline silicon is formed on an insulating substrate 10, and an interlayer insulating film 14 is deposited on the gate insulating film 12. On this interlayer insulating film 14, a planarizing insulating film 17 made of a photosensitive organic material or the like is provided. A segment electrode 150 (150a) made of a reflective material such as aluminum (Al) is formed thereon. Each segment electrode 1
An alignment film 20 made of polyimide or the like for aligning the liquid crystal 21 is formed on the flattening insulating film 17. The planar shape of the segment electrode 150 as viewed from the observer side of the display device is, for example, as shown in FIG. 1, a pattern of a battery indicating reception sensitivity of a mobile phone and a pattern of a pattern indicating remaining battery power. It is a generalized shape. Here, a case is shown in which the color filters are arranged in a portion indicating the remaining battery level shown in FIG. In other words, the color filter corresponding to one of the portions indicating the remaining battery level is a case where a plurality of colors are arranged, in this case, three R and G, each of which is three in total.

On the segment electrode 150, a planarizing insulating film 160 made of a photosensitive organic material or the like is deposited, and an alignment film 20 for aligning the liquid crystal 21 is formed thereon, thereby completing one of the insulating substrates 10 side. I do. On the other insulating substrate 30, a color filter 31 exhibiting a color such as red (R), green (G), blue (B) or the like is formed according to each segment electrode 150 on the insulating substrate 10. In each case, the case where the color filters are arranged in a portion indicating the remaining battery level shown in FIG. 4B is shown. That is, 1 of the portion indicating the remaining battery level
In this case, the color filters corresponding to one color are arranged in a plurality of colors, in this case, three R and G, each of which is six in total.

Then, a counter electrode 32 made of a transparent conductive material such as ITO is formed on the entire surface thereon, and an alignment film 33 is further formed thereon. In FIG. 3, R and G of the color filter are arranged above each segment electrode 150a. Note that the color filter 32
It may be arranged on the insulating substrate 10. By doing so, it is not necessary to align the color filter with the display electrode or the segment electrode, so that both substrates can be easily combined.

The periphery of both insulating substrates 10 and 30 in the segment display area B on which the electrodes and the like are formed is adhered with an adhesive sealant, and the liquid crystal 21 is injected into a gap formed by the adhesion to perform segment display. The liquid crystal display device in the region B is completed. By doing so, in the case of the above-described color filter arrangement, the area indicating the remaining battery level is
When a voltage is applied to the segment electrode 150a, yellow is emitted.

Other segment electrode 1 indicating remaining battery power
By combining and arranging R, G, and B above 50b and 150c, it is possible to produce a predetermined color. Here, a method for driving a display device having the dot matrix display area A and the segment display area B according to the present invention will be described. FIG. 5 shows a block diagram of the display device of the present invention.

As shown in FIG.
Each signal is supplied to the display device based on the signal from.
The interface IC has a dot matrix display area A
D / A conversion circuit, RG for generating each signal supplied to
It comprises a B driver, a timing controller, a COM driver, a control circuit for generating signals supplied to the segment display area B, and a segment driver.

First, a signal for supplying a signal to the dot matrix display area A will be described. A D / A conversion circuit that converts a digital signal input as display data, for example, 6 bits (18 bits in total for each color R, G, B) into an analog signal in accordance with a signal from a timing controller, and performs D / A conversion of the digital signal. R, G, amplify the R, G, B signals
The signal is input to the B driver, amplified to a predetermined amplitude, and the signal is input to the display panel.

Next, signals supplied to the segment display area B will be described. FIG. 6 shows a block diagram of a segment drive circuit, FIG. 7 shows a configuration example of a control circuit, and FIG.
Figure 2 shows an equivalent circuit diagram of the segment driver. FIG. 7 shows the case of 3 bits, but the present invention is not limited to this, and a larger number of bits such as 16 bits may be used.

As shown in FIG. 6, the segment display area driving circuit includes a control circuit including a shift register and a latch circuit, and a segment driver for selecting a signal to be supplied to each segment. As shown in FIG. 7, a clock signal SCLK, a data signal DATA, and a load signal LOAD for dividing data to be displayed into groups (3 bits of data in this embodiment) are input to a shift register of a control circuit. The signals are latched by a latch circuit and input to the segment driver as signals SEG1, SEG2, and SEG3 of the segments SEG1, SEG2, and SEG3.

Here, when, for example, the segment electrode SEG1 is selected from the segment electrodes 150, that is, when the display is turned on in white, a high bit is input to the bit corresponding to SEG1 to select it. Then, as shown in FIG. 8, two types of data signals VSIG1 and VSI supplied to the segment electrode and the counter electrode by the segment driver are provided.
G2 is selected to supply the signals VS1, VS2, and VS3 to the segment electrodes 150 on the insulating substrate 10 to control the liquid crystal in the segment display area B to display white or black (when a color filter is used). , A color corresponding to the color).

The two types of data signals VSIG1 and VSIG2 are a high voltage and a low voltage when the polarity is inverted. FIG. 9 shows the relationship between the signal VS applied to the segment electrode and the counter electrode signal COM based on the segment signal SEG and the polarity inversion signal FRP in FIG. In the case of FIG. 8, as shown in FIG. 9, when "L (low)" is input to the polarity inversion timing signal FRP and "L (low)" is input to the segment signal SEG1, the segment electrode 150 Is supplied with a data signal VSIG2, and the counter electrode 32 is supplied with a data signal VSIG2. Therefore, since a signal of the same voltage is input to the segment electrode 150 and the counter electrode 32, no voltage is applied between them, and thus the liquid crystal panel in the segment display area B is a so-called normally white (NW). Since no voltage is applied to the liquid crystal, white display is obtained.

Further, for example, the polarity inversion timing signal F
When “H (high)” is input to both the RP and the segment signal SEG1, the data signal VSIG2 is supplied to the segment electrode 150, and the data signal VSIG is supplied to the counter electrode 32.
SIG1 is supplied. Therefore, since a signal of a different voltage is input to the segment electrode 150 and the counter electrode 32, a voltage is applied between them, and thus the segment electrode 15
When the liquid crystal panel in the segment display area B is a so-called normally white (NW) between 0 and the counter electrode 32, a voltage is applied to the liquid crystal to perform black display. At this time, if a color filter is arranged in the segment display area B as shown in FIG. 3, display of the color can be obtained.

<Second Embodiment> FIG. 10 shows a second embodiment of the present invention. This embodiment is different from the first embodiment in that a segment display area is different from that of FIG.
For example, the segment electrode 150a of the pattern indicating the remaining amount of the battery shown in FIG.
50a is a point composed of a plurality of multi-segment electrodes 151.

Each color is arranged above the multi-segment electrode 151, for example, corresponding to the counter electrode substrate 30, respectively. As shown in FIG. 10A, a segment electrode having a pattern indicating the remaining amount of the battery is divided into a plurality of segments, and each color is arranged corresponding to the multi-segment electrodes. At this time, as shown in FIG. 10B, when the color filters in one segment indicating the remaining battery capacity are arranged in the order of R, G, and B, the same colors are connected. , R, G, B, or a combination thereof, a predetermined color can be displayed.

For example, as shown in FIG. 10C, when displaying yellow, a multi-segment electrode corresponding to R and a multi-segment electrode corresponding to G are selected.
The color can be obtained by applying a voltage to the segment electrode. This is because the liquid crystal stands up and the color can be displayed by the voltage applied to the selected multi-segment electrode. Also, not only yellow, R,
Other colors can be displayed by either G or B or a combination thereof. Further, for example, when the remaining battery level is large in the segment electrodes shown in FIG. 7B, yellow is displayed by selecting a color corresponding to the above-mentioned multi-segment electrode, and the remaining level has become low. In this case, for example, by selecting only the multi-segment electrode corresponding to R and displaying red, the color can be changed according to the remaining amount.

As described above, by dividing one segment electrode into a plurality of multi-segment electrodes, arranging color filters corresponding to the respective multi-segment electrodes, and selecting a predetermined multi-segment electrode, it is easy You can select the color to be displayed. As described above, the number of display pixels in the segment display area: 128XRG
BX16, when the frame frequency is 60 Hz,
For example, when an image of a fixed image portion, such as an antenna and a battery, is to be displayed, the conventional display device needs to drive and display the entire dot matrix display area, so that 45 mW of power consumption is generated. According to the display device of the present invention, when displaying the fixed image portion,
Since only the segment display area needs to be driven,
With the power consumption of 0.5 mW, power consumption can be reduced, and a battery of a mobile phone or the like can be used for a long time.

When the frame frequency is 30 Hz, the conventional power consumption is 30 mW, but 0.5
mW, and the power consumption was similarly reduced. As described above, the reflection type liquid crystal display device is a method of observing a display by reflecting external light, and it is not necessary to use a so-called backlight on the side opposite to the observer side unlike a transmission type liquid crystal display device. No power is required to turn on the backlight. Therefore, it is preferable that the display device of the present invention is a reflective liquid crystal display device which does not require a backlight and is suitable for power saving.

In each of the above embodiments, the case where a common counter electrode voltage is supplied to the dot matrix display area A and the segment display area B has been described. However, the present invention is not limited to this. The counter electrode voltage of the dot display area A and the segment display area B
And the common electrode voltage may not be common. That is, the opposing electrodes of the two regions A and B may be divided and different voltages may be applied.

By making the counter electrode voltages of the two regions A and B different from each other, when focusing on one segment display electrode having a segment display region, the inversion cycle of the segment display electrode can be one field. Therefore, power consumption can be further reduced. That is, in the dot matrix display area A, since a data signal whose polarity is inverted every horizontal scanning period is supplied, a counter electrode voltage of an inverted signal corresponding thereto must be applied. By supplying the voltage to the common electrode, the counter electrode voltage does not need to be inverted every horizontal scanning period, but needs to be inverted every field period, so that power consumption can be reduced.

In each of the above-described embodiments, the reflection type liquid crystal display device is of a type for observing a display by reflecting external light. Since there is no need to use a so-called backlight, power for lighting the backlight is not required. Therefore, it is preferable that the display device of the present invention is a reflective liquid crystal display device which does not require a backlight and is suitable for power saving. However, even in the transmission type liquid crystal display device, the provision of the segment display region can sufficiently reduce power consumption.

Further, in each of the above-described embodiments, the case where the dot matrix display area A and the segment display area B are each independently partitioned by an adhesive sealant has been described, but the present invention is not limited thereto. However, the dot matrix display area A and the segment display area B are bonded with one seal adhesive,
Liquid crystal may be filled in the two gaps.

[0052]

According to the display device of the present invention, when displaying a fixed image on the display device, it is not necessary to drive each driver and the driver scanning LSI, so that a display device capable of reducing power consumption can be obtained. In addition, by displaying one segment electrode in a plurality of colors, multi-color display becomes possible.

[Brief description of the drawings]

FIG. 1 is a plan view of a display device of the present invention.

FIG. 2 is an equivalent circuit diagram of the display device of the present invention.

FIG. 3 is a sectional view of a segment display area of the display device of the present invention.

FIG. 4 is a partially enlarged view of the display device of the present invention.

FIG. 5 is a block diagram of a display device of the present invention.

FIG. 6 is a block diagram of a segment drive circuit.

FIG. 7 is a block diagram of a control circuit of the segment drive circuit.

FIG. 8 is an equivalent circuit diagram of a segment driver of the segment drive circuit.

FIG. 9 is a signal selection diagram of a segment electrode.

FIG. 10 is a sectional view showing a second embodiment of the present invention.

FIG. 11 is a plan view of a conventional display device.

FIG. 12 is an equivalent circuit diagram of a conventional display device.

FIG. 13 is a sectional view of a dot matrix display area.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Insulating substrate 19 Display electrode 21 Liquid crystal 31 Color filter 32 Counter electrode 50 Gate driver 51 Gate signal line 60 Drain driver 61 Drain signal line 70 TFT 86 Display electrode 91 External LSI 100 Liquid crystal display panel 150 Segment electrode 170 Signal input section 200 Display pixel 500 External gate driver 600 External drain driver A Dot matrix display area B Segment display area

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09F 9/30 349 G09G 3/00 V 5C094 G09G 3/00 3/20 611A 3/20 611 3/36 3 / 36 G02F 1/136 500 F term (reference) 2H091 FA03Y LA15 2H092 GA03 GA04 GA13 GA59 JA24 JB07 JB14 NA26 2H093 NA07 NA16 NA32 NA33 NA62 NC18 NC22 NC26 NC34 NC49 ND39 NE03 NE06 NE07 5C006 AA21 BB01 BB15 ABB05 ABB05 ABB05 BB15 ABB17 CC03 CC07 DD26 EE02 FF10 FF11 JJ01 JJ02 JJ03 KK43 KK47 5C094 AA08 AA22 AA48 BA03 BA05 BA43 CA14 CA19 CA24 DA09 DB01 DB04 EA04 EA05 EA07 EB02 ED03 ED11 FA01 FA02 FB12

Claims (6)

[Claims] 1. A display comprising, on a same substrate, a dot matrix display area having display electrodes arranged in a matrix and having a peripheral drive circuit for supplying a drive signal to the display electrodes, and a segment display area comprising segment electrodes. A display device, wherein one of the segment electrodes includes a multi-segment electrode divided into a plurality of regions, and a color filter is provided corresponding to each of the multi-segment electrodes. 2. A display comprising, on the same substrate, a dot matrix display area provided with display electrodes arranged in a matrix and having a peripheral drive circuit for supplying a drive signal to the display electrodes, and a segment display area made up of segment electrodes. An apparatus, wherein each of the regions is provided with a color filter,
The display device, wherein the color filter includes a plurality of color regions for one of the segment electrodes. 3. The display device according to claim 1, wherein a counter electrode signal applied to a counter electrode disposed to face the display electrode and the segment electrode is the same in both display areas. Display device. 4. The display device according to claim 1, wherein a counter electrode signal applied to a counter electrode disposed to face the display electrode and the segment electrode is different between the two display regions. Display device. 5. A gate driver for supplying a gate signal to a plurality of gate signal lines and a drain driver for supplying a drain signal to a plurality of drain signal lines are arranged in the dot matrix display area. 5. A switching element is provided near an intersection of a signal line and the drain signal line, and the switching element is connected to the display electrode.
The display device according to claim 1. 6. A fixed image is displayed in an area where the segment electrodes are arranged, and a non-fixed image is displayed in an area where the display electrodes are arranged. The display device according to item.