JP2007156126A - Electro-optical apparatus and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electro-optical apparatus capable of making a main panel narrow in its frame without impairing the display quality of a sub-panel in an electro-optical apparatus of a system in which the main panel and the sub-panel are driven by a common driving IC. <P>SOLUTION: This electro-optical apparatusis provided with: the main panel (a display area H1) including a first scanning line 15 and a data line 19; the sub-panel (a display area H2) including a second scanning line 35 and data lines 37 which are electrically connected to a data line 19; and a driving semiconductor device for supplying a signal to both the main panel and the sub-panel. The second scanning line 35 is electrically connected to the driving semiconductor via the main panel. Two pixel areas P2A and P2B corresponding to intersections of two adjoining data lines 37 and one second scanning line 35 on the sub-panel are placed in line with an extension direction of the data lines 37, and the second scanning line 35 supplies a scanning signal to the two pixel areas P2A and P2B. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electro-optical device and an electronic apparatus, and more particularly, to an electro-optical device that includes a main panel and a sub-panel and drives them with a single driving semiconductor element.

In recent years, in portable electronic devices such as mobile phones, for example, a main panel capable of high-definition color display for displaying image information, and a sub-panel capable of simple display of date, clock, etc. that are smaller than the main panel Are provided on both sides of the display unit. In the case of such a display module having two main and sub panels, particularly when used in a portable device, downsizing and a narrow frame are required. Accordingly, there has been proposed one in which one driving IC is shared by two panels and the two panels are driven by a driving signal supplied from the driving IC (for example, see Patent Document 1). In this type of electro-optical device, it is not necessary to install separate driving ICs on the two panels. Therefore, the size and the frame size can be reduced, and the number of parts can be reduced, so that the cost can be reduced.
JP 2004-294747 A

  In the case of the electro-optical device as described above, in order to supply a common signal to the sub-panel, the common electrode of the sub-panel is routed to the driving IC provided on the main panel. However, in such a configuration, if the common electrode of the sub panel is increased in order to improve the display quality of the sub panel, there is a problem that the frame area of the main panel becomes wide and the frame cannot be sufficiently narrowed. It was.

  The present invention has been made to solve the above-described problem, and in an electro-optical device in which the main panel and the sub panel are driven by a common driving IC, the main panel and the sub panel can be displayed without degrading the display quality. An object of the present invention is to provide an electro-optical device capable of narrowing the frame of a panel and an electronic apparatus including the same.

In order to solve the above problems, an electro-optical device according to the present invention includes a first panel having a plurality of first scanning lines and a plurality of data lines, a plurality of second scanning lines, and data provided on the first panel. A second panel having a plurality of data lines electrically connected to the line; and a driving semiconductor element for supplying an electric signal to both the first panel and the second panel, and the second scanning line. Is electrically connected to the driving semiconductor element via the first panel, and two adjacent data lines among the plurality of data lines provided on the second panel and the plurality of second scanning lines. Two pixel regions corresponding to intersections with one scanning line are arranged in the extending direction of the data lines provided in the second panel, and the one second scanning line is arranged in the two pixel regions. In contrast, a scanning signal is supplied.
According to this configuration, two pixel regions corresponding to the intersection of one scanning line provided in the second panel and two adjacent data lines among the plurality of data lines provided in the second panel are: Since the data lines are arranged in the direction in which the data lines extend, the number of wirings routed around the frame area of the first panel and electrically connected to the scanning lines of the second panel can be reduced to half the normal number. A structure in which two pixel regions corresponding to the intersection of one scanning line and two adjacent data lines are arranged in the extending direction of the data line is called a “double matrix structure”, and the number of duties It is known as a structure capable of increasing the on / off ratio by halving the ratio. However, this structure has a drawback that the number of scanning lines can be reduced to half and the number of data lines can be doubled. Here, in an electro-optical device including one as a main panel (first panel) and the other as a sub panel (second panel), the number of pixels of the first panel as the main panel is larger than the number of pixels in the second panel as the sub panel. In general, when the data line of the second panel is to be connected to the driving semiconductor element via the data line of the first panel, all the data lines of the first panel are connected to the data of the second panel. It is not connected to the line, and a part of the line remains without being connected to the data line of the second panel. In particular, when the first panel is displayed in color, a plurality of sub-pixels are arranged in one pixel, so that the ratio of the first data line connected to the data line of the second panel is further reduced. Under such circumstances, even if the double matrix structure is adopted and the number of data lines of the second panel is increased, it is particularly equal to or less than the number of data lines of the first panel. In this case, no problem occurs and only the advantage of adopting the double matrix structure is obtained. Thus, when the number of scanning lines of the second panel is reduced by the double matrix structure, not only the frame area of the first panel necessary for routing the second panel is reduced, but also the number of terminals provided in the driving semiconductor element is reduced. Therefore, the driving semiconductor element can be reduced in size and cost accordingly.

  Note that the above-described double matrix structure is applicable to both the passive matrix method and the active matrix method. For example, when the “first panel” and the “second panel” are passive matrix type liquid crystal devices, the “data line on the first panel” and the “data line on the second panel” are segments for driving the liquid crystal. It means an electrode, and “first scanning line on the first panel” and “second scanning line on the second panel” mean a common electrode for driving liquid crystal. Further, when the “first panel” and the “second panel” are active matrix type liquid crystal devices, the “data line on the first panel” and the “data line on the second panel” are connected to the pixel switching element. The “first scanning line on the first panel” and the “second scanning line on the second panel” mean the scanning lines connected to the pixel switching elements. The double matrix structure can be applied to both a monochrome display panel and a color display panel. When the “first panel” and the “second panel” are monochrome display panels, the “pixel region” is used. Means each pixel area that performs black and white display. When the “first panel” and “second panel” are color display panels, the “pixel area” means color display such as red, green, and blue. Each sub-pixel area to be performed is meant. Furthermore, the above-mentioned “first panel” and “second panel” are not limited to liquid crystal panels, and other electro-optical panels such as organic EL panels may be used. The electro-optical panel or the electro-optical device includes an electro-optical effect that changes the light transmittance by changing the refractive index of a substance due to an electric field, and a device that converts electric energy into optical energy. Collectively. For example, examples of the electro-optic material include a liquid crystal element sandwiched between opposing electrodes and an organic or inorganic EL element.

In the present invention, among the plurality of data lines provided on the first panel, the capacitance of the first data line electrically connected to the data line provided on the second panel is the second data line. It is desirable that the capacitance of the second data line not electrically connected to the data line provided on the panel is smaller. In the present invention, the resistance of the first data line electrically connected to the data line provided on the second panel among the plurality of data lines provided on the first panel is the first data line. It is desirable that the resistance of the second data line not electrically connected to the data line provided in the two panels is smaller.
When the data line of the first panel includes the first data line connected to the data line on the second panel and the second data line not connected to the data line on the second panel, these two types However, since the data lines have different capacitances or data line resistances, there is a problem in that the driving ability differs between the two data lines. That is, the second data line that is not connected to the data line on the second panel and has a small capacitance or data line resistance connected to the data line has high driving capability, and is connected to the data line on the second panel and is connected to the data line. The first data line having a large capacity connected to the line or a large resistance of the data line has a low driving capability, and as a result, there is a possibility that display unevenness occurs in the first panel. In particular, since color display is often performed on the first panel, color unevenness on the screen becomes a problem.
Although the above-mentioned Patent Document 1 has the same problem, here, the scanning signal driving circuit on the first panel is provided with a dummy circuit not connected to the gate signal line to solve the problem. Yes. However, this method has a drawback that the configuration of the drive circuit becomes complicated and a new circuit design is required.
On the other hand, in the electro-optical device of the present invention, among the data lines on the first panel, the capacitance (intersection of the data line and the scanning line) connected to the first data line connected to the data line on the second panel. (This is proportional to the area of the region) or the resistance of the first data line is made smaller than the capacitance connected to the second data line not connected to the data line on the second panel or the resistance of the second data line. Has solved. That is, in the first data line that tends to increase the capacitance connected to the data line or the resistance of the data line by being electrically connected to the data line of the second panel, by controlling the width of the data line, etc. The capacitance connected to the first data line or the resistance of the data line is reduced to make the load capacitance of the first data line and the second wiring closer. As a result, the driving ability of the signals of the first data line and the second data line can be made closer, and display unevenness can be suppressed. In addition, since the configuration of the present invention can be realized only by partially changing the width of the mask pattern at the time of forming the data line, there is no burden on the manufacturing process, and the configuration of the drive circuit is complicated as in Patent Document 1. It will never be.

In the present invention, a plurality of sub-pixels are arranged on the first panel corresponding to the intersecting regions of the plurality of first scanning lines and the plurality of data lines provided on the first panel. And a color filter having a plurality of colored layers arranged in a region overlapping with the plurality of sub-pixels, and of the plurality of sub-pixels, a data line provided on the second panel is electrically connected A colored layer of a predetermined color of the plurality of colors is disposed in a region overlapping with the sub-pixel corresponding to the first data line connected to the first data line, and is electrically connected to the data line provided on the second panel A colored layer of a color other than the predetermined color among the plurality of colors may be disposed in a region overlapping with a sub-pixel corresponding to the second data line not connected to.
According to this configuration, when the electro-optical device of the present invention is used for color display, the balance of driving ability between the sub-pixels of each color is improved, so that the display color can be adjusted, and display unevenness including color unevenness is prevented. Can be reduced.

In the present invention, each of the data line provided in the second panel and the data line provided in the first panel is a segment electrode functioning as a display electrode, and the driving semiconductor is provided in the first panel. A common electrode functioning as the first scanning line that is electrically connected to each element is provided, and a region of the sub-pixel is configured in a region where the segment electrode and the common electrode intersect. it can.
Here, when the first panel includes, for example, a color filter and performs color display and is of a passive matrix system, the width of the data line on the first panel (that is, the display electrode that is a segment electrode) is increased. Changing is equivalent to changing the area of the sub-pixel for each color. Therefore, when the width of the first data line is made smaller than the width of the second data line, for example, if the color filter includes a colored layer of three colors, one color of the sub-pixel is always the other pixel. The area is smaller than the subpixels of two colors. As described above, by changing the area of the sub-pixels of a predetermined color among the plurality of basic colors to the sub-pixels of other colors, the display color of the first panel can be adjusted while suppressing display unevenness.

In the present invention, the plurality of colors of the colored layer of the color filter include red, green, and blue, and the region overlapping the sub-pixel corresponding to the first data line has the red or green color. A colored layer may be disposed.
When, for example, a liquid crystal panel is used as the first panel, the white color may become yellowish due to the influence of various components, which deteriorates the appearance. This display color can be improved by increasing the color tone of blue which is a complementary color of yellow. Therefore, when the first data line connected to the data line of the second panel is provided in the sub-pixel corresponding to the red colored layer or the green colored layer, the area of the blue sub-pixel is relatively larger than those sub-pixels. As a result, the white balance can be improved.

In the present invention, the second panel has a plurality of sub-pixels arranged corresponding to each intersection region of the second scanning line and the plurality of data lines provided in the second panel, and A color filter including a plurality of colored layers arranged in a region overlapping with the plurality of sub-pixels may be provided.
According to this configuration, color display is possible on both the first panel and the second panel. In addition, since the number of data lines (second data lines) that are not connected to the data lines on the second panel is further reduced on the first panel, the wiring of both the first panel and the second panel can be compactly organized. it can. In particular, when the ratio of the number of pixels of the first panel and the second panel arranged in the arrangement direction of the data lines is 2: 1, all the data lines on the first panel are connected to the data lines on the second panel. As a result, there is no variation in capacitance or resistance between the data lines, and as a result, good display characteristics can be obtained without adjusting the width of the data lines as described above. become.

An electronic apparatus according to the present invention includes the above-described electro-optical device according to the present invention.
According to this configuration, it is possible to provide an electronic device including a display unit that has a narrow frame area in the first panel and excellent display quality even in the second panel.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, an XYZ orthogonal coordinate system is set, and the positional relationship of each member will be described with reference to this XYZ orthogonal coordinate system. The predetermined direction in the horizontal plane is the X-axis direction, the direction orthogonal to the X-axis direction in the horizontal plane is the Y-axis direction, and the direction orthogonal to each of the X-axis direction and the Y-axis direction (that is, the vertical direction) is the Z-axis direction. To do.

[First Embodiment]
First, a liquid crystal module (liquid crystal device) including two liquid crystal panels will be described as a first embodiment of an electro-optical device. FIG. 1 is a perspective view showing the overall configuration of the liquid crystal module 1 of the present embodiment, FIG. 2 is a cross-sectional view of the liquid crystal module 1, and FIG. 3 is a liquid crystal bent at the flexible connector portion in FIGS. FIG. 4 is a schematic plan view showing the module 1 in a developed state, FIG. 4 is a detailed plan view thereof, and FIG. 5 is a plan view showing the shape of each pixel in each panel of the liquid crystal module 1.

  As shown in FIG. 1, the liquid crystal module 1 of the present embodiment includes a main panel 2 (first liquid crystal panel), a sub panel 3 (second liquid crystal panel), a backlight 4 disposed therebetween, a main panel 2 (first liquid crystal panel), From the flexible connector 5 that connects the panel 2 and the sub-panel 3, the driving IC 6 (driving semiconductor element) mounted on the main panel 2, and the flexible substrate 7 for supplying signals to the driving IC 6 from the outside It is roughly structured. The liquid crystal module 1 is used for displaying on both sides of a display unit such as a mobile phone, and the main panel 2 is viewed on the upper side in FIG. 1, and the sub panel 3 is viewed on the lower side in FIG. On the side. In the present embodiment, the main panel 2 performs color display and the sub panel 3 performs monochrome display. Both the main panel 2 and the sub panel 3 are examples of a passive matrix type transmissive liquid crystal panel.

A detailed configuration of each part of the liquid crystal module 1 will be described.
As shown in FIG. 2, a backlight 4 is provided between the main panel 2 and the sub panel 3. The backlight 4 includes a light source 8 and a light guide plate 9, and the light guide plate 9 is configured to emit light L emitted from the light source 8 on both the main panel 2 side and the sub panel 3 side.

  As for the main panel 2, a first substrate 11 (viewing side substrate) and a second substrate 12 (backlight side substrate), both of which are made of a transparent substrate such as glass or plastic, are spaced apart from each other by a sealing material 13. The liquid crystal 14 is sealed in a region surrounded by the substrates 11 and 12 and the sealing material 13. A plurality of common electrodes 15 made of a transparent conductive film such as indium tin oxide (hereinafter abbreviated as ITO) are formed in a stripe shape on the surface of the second substrate 12 on the liquid crystal side. An alignment film 16 is formed so as to cover 15.

  On the other hand, on the liquid crystal side surface of the first substrate 11, a color filter 17, an overcoat layer 18 (planarization layer), a segment electrode 19, and an alignment film 20 are provided in this order from the substrate side. Both ends of the segment electrode 19 extend to the outside of the sealing material 13 as lead wires 21 and 22 of the segment electrode 19. The outer shape of the first substrate 11 is larger than the outer shape of the second substrate 12, and the driving IC 6 is mounted on one of the projecting areas of the first substrate 11 projecting to the outside of the second substrate 12 (the left portion in FIG. 2). Has been. The output terminal of the driving IC 6 is connected to one lead wiring 22 of the segment electrode 19, and the input terminal of the driving IC 6 is connected to the flexible substrate 7 via the external connection terminal 23. The flexible connector 5 is mounted on the other of the overhanging regions of the first substrate 11 (the right portion in FIG. 2) and is electrically connected to the other lead wiring 21 of the segment electrode 19. A first retardation plate 24, a second retardation plate 25, and a polarizing plate 26 are provided on the surface of the first substrate 11 opposite to the liquid crystal. A phase difference plate 27 and a polarizing plate 28 are provided on the surface of the second substrate 12 opposite to the liquid crystal.

  For the sub-panel 3, the first substrate 31 (viewing side substrate) and the second substrate 32 (backlight side substrate), both of which are made of a transparent substrate such as glass or plastic, are spaced apart from each other by a sealing material 33. The liquid crystal 34 is sealed in a region surrounded by the substrates 31 and 32 and the sealing material 33. On the surface of the second substrate 32 on the liquid crystal side, a plurality of common electrodes 35 made of a transparent conductive film such as ITO are formed in stripes, and an alignment film 36 is formed so as to cover these common electrodes 35.

  On the other hand, a segment electrode 37 and an alignment film 38 are provided on the liquid crystal side surface of the first substrate 31, and no color filter is provided on the sub-panel 3. One end of the segment electrode 37 serves as a lead wiring 39 for the segment electrode 37 and extends outside the sealing material 33. The outer shape of the first substrate 31 is larger than the outer shape of the second substrate 32, and the flexible connector 5 is mounted in the overhanging region of the first substrate 31 and is electrically connected to the lead wiring 39 of the segment electrode 37. A polarizing plate 40 is provided on the surface of the first substrate 31 opposite to the liquid crystal, and a polarizing plate 41 and a transflective plate 42 are provided on the surface of the second substrate 32 opposite to the liquid crystal in order from the substrate side. It has been. Since the transflective plate 42 is provided on the most backlight side surface of the sub panel 3, a part of the light emitted from the backlight 4 to the sub panel side is reflected by the transflective plate 42 to the main panel side. Since the light is emitted toward the main panel 2, the brightness of the main panel 2 can be improved.

Next, the configuration of the electrodes of each panel will be described.
FIG. 3 is a diagram showing the electrodes with a single solid line in order to make the connection relationship of the electrodes easier to see. FIG. 4 is a diagram in which the electrodes including the constituent members such as the sealing material are more substantial than those in FIG. 3.
In the main panel 2, as shown in FIG. 4, a sealing material 13 is provided in a rectangular ring shape along the outer periphery of the substrate, and a peripheral light-shielding film 44 called a “peripheral parting” is rectangular inside the sealing material 13. It is provided in an annular shape. An inner area surrounded by the peripheral light shielding film 44 is a display area H1. In the display region H1, a plurality of segment electrodes (data lines) 19 extending in the Y direction are formed in stripes. On the other hand, a plurality of common electrodes (first scanning lines) 15 extending in the X direction so as to be orthogonal to the segment electrodes 19 are formed in stripes. Here, the segment electrode 19 and the common electrode 15 intersect with each other to form a rectangular region that overlaps in plan view, and this region constitutes a “sub-pixel” on the main panel 2. Each sub-pixel in the display area H1 is provided with a colored layer composed of each color of red (R), green (G), and blue (B) of the color filter in order to perform color display. One pixel serving as one display unit capable of color display is constituted by three sub-pixels of R, G, and B.

  On the other hand, in the sub-panel 3, a sealing material 33 is provided in a rectangular ring shape along the outer periphery of the substrate, and an inner area surrounded by the sealing material 33 is a display area H2. In the display area H2, a plurality of segment electrodes (data lines) 37 that are electrically connected to the segment electrodes 19 of the main panel 2 and extend in the Y direction are formed in stripes. On the other hand, a plurality of common electrodes (second scanning lines) 35 extending in the X direction so as to be orthogonal to the segment electrodes 37 are formed in stripes. Here, the segment electrode 37 and the common electrode 35 intersect with each other to form a rectangular region that overlaps in plan view, and this region constitutes a “pixel” on the sub-panel 3. Each “pixel” on the sub-panel 3 constitutes one display unit capable of monochrome display.

  As shown in FIG. 3, all the segment electrodes 19 and the common electrodes 15 on the main panel 2 and all the segment electrodes 37 and the common electrodes 35 on the sub-panel 3 are electrically connected to the driving IC 6 mounted on the main panel 2. The driving signals from the driving IC 6 (scanning signals supplied to the common electrodes and data signals supplied to the segment electrodes) are supplied to all these electrodes. When viewed from the driving IC 6, the connection relationship between the electrodes and the wiring is such that the segment electrode 19 on the main panel 2, the wiring 45 on the flexible connector 5, and the segment electrode 37 on the sub-panel 3 are connected in series. . Of the segment electrodes 19 on the main panel 2, some are electrodes 19 a (first data lines) connected to the segment electrodes 37 on the sub-panel 3, and the others are connected to the segment electrodes 37 on the sub-panel 3. There is no electrode 19b (second data line).

  In the case of this embodiment, the arrangement pattern of the colored layers of the color filter 17 is a vertical stripe type, and R, G, B, R, G in the X direction (direction in which the common electrode 15 extends) in FIGS. , B,... The segment electrodes 37 on the sub-panel 3 are connected to the segment electrodes 19a corresponding to all the R sub-pixels and the G sub-pixels, and the segment electrodes 19b corresponding to all the B sub-pixels are connected to the segment electrodes 19a on the sub-panel 3. The electrode 37 is not connected. Therefore, as shown in FIG. 3, every two segment electrodes 19b on the main panel 2 to which the segment electrodes 37 on the sub-panel 3 are not connected are arranged.

  The common electrode 15 is formed on the substrate opposite to the substrate on which the driving IC 6 is mounted. Therefore, in order to supply a signal from the driving IC 6 to the common electrode 15, the common electrode 15 is connected to the common electrode 15. The rotating wiring 46 needs to be conducted between the two substrates. Therefore, conductive particles coated with metal are contained in the sealing material 13, and one end of the common electrode 15 and one end of the lead wiring 46 are extended to a position overlapping the sealing material 13 as shown in FIG. In this place, a configuration is adopted in which the substrates are electrically connected. As shown in FIG. 3, with respect to the main panel 2, the driving IC 6 and the common electrode 15 are connected by a path of the driving IC 6, the routing wiring 46, the conductive particles 47 in the sealing material 13, and the common electrode 15. . On the other hand, for the sub panel 3, the driving IC 6 and the common electrode 35 are connected to the driving IC 6, the routing wiring 48 in the main panel 2, the routing wiring 49 on the flexible connector 5, the routing wiring 50 on the sub panel 3, The conductive particles 51 in the sealing material and the common electrode 35 are connected through a path.

FIGS. 5A and 5B are schematic plan views showing display areas of the main panel 2 and the sub panel 3, respectively.
As shown in FIG. 5A, the display area H1 of the main panel 2 is provided with a plurality of segment electrodes 19 extending in the Y direction and a plurality of common electrodes 15 extending in the X direction. A plurality of sub-pixels Dr, Dg, and Db are arranged corresponding to each crossing region of the plurality of segment electrodes 19 and the plurality of common electrodes 15. The sub-pixels Dr, Dg, and Db correspond to colored layers of red (R), green (G), and blue (B) of the color filter, respectively, and one of these three sub-pixels Dr, Dg, and Db Pixel P1 is configured.

  On the other hand, as shown in FIG. 5B, the display area H <b> 2 of the sub-panel 3 extends in the X direction with a plurality of segment electrodes 37 that are electrically connected to the segment electrodes 19 of the main panel 2. A plurality of common electrodes 35 are provided, and a plurality of pixels P <b> 2 are arranged corresponding to each crossing region of the plurality of segment electrodes 37 and the plurality of common electrodes 35.

  Here, the segment electrode 37 has a main line portion 371 extending in the Y direction and a plurality of widened portions 372 connected to the main line portion 371. Each of the widened portions 372 corresponds to the pixel P2 of the sub panel 3. Each widened portion 372 is arranged every other pixel along the Y direction, and the widened portions 372 are arranged so as to mesh with each other between adjacent segment electrodes 37. The two segment electrodes 37 in which the widened portions 372 are engaged with each other in this way form one column of pixels P2 arranged in the Y direction. The common electrode 35 is disposed so as to overlap with a pair of widened portions 372 adjacent in the Y direction, and the pair of widened portions 372 (that is, two pixels P2 adjacent in the Y direction) is one common electrode. It is driven by 35.

  Thus, in the sub-panel 3, two pixels P2 adjacent in the arrangement direction of the common electrode 35 correspond to one common electrode 35, and the arrangement of the pixels P2 has a so-called double matrix structure. It has an array.

  Here, the “double matrix structure” refers to a structure in which two pixel regions corresponding to the intersection of one scanning line and two adjacent data lines are arranged in the extending direction of the data lines. This double matrix structure is a structure applicable to both the passive matrix system and the active matrix system. In the case of a passive matrix system liquid crystal panel as in this embodiment, the “data line” is used for driving the liquid crystal. It means a segment electrode, and “scanning line” means a common electrode for driving liquid crystal.

  When such a double matrix structure is adopted, for example, when the pixel P2A or P2B is to be lit and displayed, if the voltage is supplied by selecting the segment electrode 37A or 37B, respectively, the voltage is supplied from one common electrode 35. This will be possible. That is, if the number of common electrodes is the same, the number of pixels can be doubled. In other words, it becomes possible to increase the on / off ratio by halving the number of duties, thereby improving the contrast.

  In this way, when the sub-panel 3 has a double matrix structure, the number of common electrodes 35 can be reduced to half if the number of pixels is the same. However, since the total number of pixels to be driven is not reduced, there is a disadvantage that the number of segment electrodes 37 is doubled. However, in the liquid crystal module 1, since the number of sub-pixels of the main panel 2 is larger than the number of pixels of the sub-panel 3, the segment electrode 37 of the sub-panel 3 is connected to the driving IC 6 via the segment electrode 19 of the main panel 2. When connected, only a part of the segment electrode 19 of the main panel 2 is connected to the segment electrode 37 of the sub-panel 3, and the rest remains without being connected to the segment electrode 37. Under such circumstances, even if the double matrix structure is adopted and the number of the segment electrodes 37 of the sub-panel 3 is increased, it is particularly equal to or more than the number of the segment electrodes 19 of the main panel 2. If the number is small, no problem occurs. Rather, the number of the common electrodes 35 of the sub-panel 3 is reduced, so that the frame area of the main panel 2 necessary for routing the sub-panel 3 is reduced, and the terminals provided in the driving IC 6 are further reduced. Therefore, only the advantage that the driving IC 6 can be reduced in size and cost can be obtained.

  As a specific example, in this embodiment, the number of pixels of the main panel 2 is 128 pixels (X direction) × 128 pixels (Y direction), and the number of segment electrodes 19 is 128 × 3 colors = 384. The number of common electrodes 15 is 128. On the other hand, the number of pixels of the sub panel 3 is 128 pixels (X direction) × 128 pixels (Y direction), and the number of segment electrodes 37 is 128 × 1 color × 2 (double matrix structure) = 256, The number of the electrodes 35 is 128 ÷ 2 (double matrix structure) = 64. Therefore, the number of the common electrodes 35 can be reduced by 64 compared to the case where the double matrix structure is not applied to the sub-panel 3, and thereby the area of the common electrode 35 routed to the frame region of the main panel 2 is also increased. It can be reduced to about half.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described with reference to FIG.
FIG. 6 is a plan view showing the shape of each pixel in each panel of the liquid crystal module of this embodiment. The basic configuration of the liquid crystal module of the present embodiment is the same as that of the first embodiment, and only the point that the capacitance connected to the segment electrode 19 of the main panel 2 or the segment electrode 19 is adjusted for each of R, G, and B colors. Is different from the first embodiment. Therefore, the same code | symbol is attached | subjected to the same component as 1st Embodiment, and detailed description is abbreviate | omitted.

  As described above, also in the present embodiment, the segment electrode 37 on the sub-panel 3 is connected to the segment electrode 19a corresponding to the R and G sub-pixels Dr and Dg in the main panel 2 and corresponds to the B sub-pixel Db. The segment electrode 19b on the sub-panel 3 is not connected to the segment electrode 19b. In this configuration, there is a possibility that the driving capability of the sub-pixel may vary between the segment electrode 19a and the segment electrode 19b. Therefore, in the present embodiment, such variation in driving capability is adjusted by changing the capacitance connected to each of the segment electrodes 19a and 19b or the respective resistance.

  Specifically, as shown in FIG. 6, the width Wr and Wg of the segment electrode 19a corresponding to the R subpixel Dr and the G subpixel Dg are equal to the width Wb of the segment electrode 19b corresponding to the B subpixel Db. Is set smaller than. Further, in the present embodiment, the width Wg of the segment electrode 19b corresponding to the G sub-pixel Dg is set smaller than the width Wr of the segment electrode 19a corresponding to the R sub-pixel Dr. In the case of the passive matrix system, since the width of the segment electrode directly corresponds to the horizontal dimension of the sub pixel, the horizontal dimension of the sub pixel increases in the order of the G sub pixel, the R sub pixel, and the B sub pixel. Will be set. Since the width Wcm of the common electrode 15 does not change in all the sub-pixels, the vertical dimensions of the sub-pixels Dr, Dg, and Db are all the same.

  As a specific example, as shown in FIG. 6, in the present embodiment, the width Wg of the segment electrode 19a corresponding to the G subpixel is 60 μm, the width Wr of the segment electrode 19a corresponding to the R subpixel is 73 μm, The segment electrode 19b corresponding to the B sub-pixel has a width Wb of 77 μm, and the common electrode 15 has a width Wcm of 210 μm.

  In the liquid crystal module according to the present embodiment, the segment electrodes 19a corresponding to the R sub-pixel Dr and the G sub-pixel Dg of the main panel 2 tend to have a large load capacity due to the connection of the segment electrode 37 of the sub-panel 3. By reducing the width, the capacity connected to the wiring itself is reduced, and the load capacity of the segment electrodes 19a and 19b is made as close as possible. As a result, the drive capability of the signals of the segment electrodes 19a and 19b can be made close to each other, so that display unevenness of the main panel 2 can be suppressed. Further, this configuration can be realized only by partially changing the width of the mask pattern at the time of wiring formation, so that no burden is imposed on the manufacturing process and the configuration of the drive circuit is not complicated.

  In this embodiment, the capacitance connected to the segment electrode is changed for each color of R, G, and B in order to eliminate the variation in the driving capability. However, the resistance of the segment electrode can be changed instead. It is also possible to change both of these.

[Third Embodiment]
The third embodiment of the present invention will be described below with reference to FIG.
FIG. 7 is a plan view showing the shape of each pixel in each panel of the liquid crystal module of this embodiment. The basic configuration of the liquid crystal module of this embodiment is the same as that of the first embodiment, and the capacitance or wiring resistance connected to the wiring connected to the sub-pixels of the main panel 2 is adjusted for each of R, G, and B colors. Only the point is different from the first embodiment. Therefore, the same code | symbol is attached | subjected to the same component as 1st Embodiment, and detailed description is abbreviate | omitted.

  The basic idea of this embodiment is the same as that of the second embodiment. That is, when there is a segment electrode 19 in the main panel 2 that is connected to the segment electrode 37 of the sub-panel 3 and a segment electrode 19 that is not connected to the segment electrode 19, the variation in driving capability is connected to the wiring in the wiring connected to the segment electrode. It is adjusted by changing the capacitance or wiring resistance. In the case of the present embodiment, the balance is achieved by changing the capacitance or wiring resistance corresponding to the wiring connected to the segment electrode without changing the width of the segment electrode in the pixel portion. As such wirings, there are a wiring 191 routed from the display area H1 to the driving IC 6, and a wiring 192 led from the display area H1 to the sub-panel 3 side, and one or both of these are adjusted. Makes it possible to achieve a good balance.

  Specifically, as shown in FIG. 7, the widths dr and dg of the wiring 191a connected to the segment electrode 19a corresponding to the R subpixel Dr and the G subpixel Dg correspond to the B subpixel Db. The width is set larger than the width db of the wiring 191b connected to the segment electrode 19b. Further, in the present embodiment, the width dg of the wiring 191a connected to the segment electrode 19b corresponding to the G subpixel Dg is equal to the width dr of the wiring 191a connected to the segment electrode 19a corresponding to the R subpixel Dr. Is set larger than.

Note that as a method of changing the wiring resistance of the wiring 191, there is a method of changing the thickness, material, and the like of the wiring in addition to changing the width of the wiring 191, and good display characteristics can be obtained in any case.
In this embodiment, the resistance of the wiring 191 connected to the segment electrode 19 is changed for each of the colors R, G, and B in order to eliminate the variation in driving capability. Instead, the capacitance connected to the wiring 191 is changed. It is also possible to change, and it is also possible to change both of these. Further, the same adjustment is possible for the wiring 192 routed from the display area H1 to the sub-panel 3 side, whereby a better balance can be obtained.

[Fourth Embodiment]
Hereinafter, a fourth embodiment of the present invention will be described with reference to FIG.
FIG. 8 is a plan view showing the display area H2 of the sub-panel 3 of the liquid crystal module of this embodiment. The basic configuration of the liquid crystal module of this embodiment is the same as that of the first embodiment, and is different from the first embodiment only in that one pixel of the sub-panel 3 is composed of three sub-pixels. Therefore, the same code | symbol is attached | subjected to the same component as 1st Embodiment, and detailed description is abbreviate | omitted.

  In the display area H2 of the sub-panel 3, a plurality of segment electrodes 37 extending in the Y direction are formed in stripes. On the other hand, a plurality of common electrodes 35 extending in the X direction so as to be orthogonal to the segment electrodes 37 are formed in a stripe shape. Here, the segment electrode 37 and the common electrode 35 intersect with each other to form a substantially rectangular region overlapping in plan view, and this region constitutes a “sub-pixel” on the sub-panel 3. Each subpixel in the display area H2 is provided with a colored layer composed of each color of red (R), green (G), and blue (B) of the color filter in order to perform color display. Then, one pixel P2 serving as one display unit capable of color display is configured by the three sub-pixels Dr, Dg, and Db of R, G, and B.

  Here, the segment electrode 37 has a main line portion 371 extending in the Y direction and a plurality of widened portions 372 connected to the main line portion 371. Each of the widened portions 372 corresponds to a subpixel of the subpanel 3. Each widened portion 372 is arranged every other sub-pixel along the Y direction, and the widened portions 372 are arranged so as to mesh with each other between adjacent segment electrodes 37. The two segment electrodes 37 in which the widened portions 372 are engaged with each other in this way form sub-pixels for one column arranged in the Y direction. The common electrode 35 is disposed so as to overlap with a pair of widened portions 372 adjacent in the Y direction, and the pair of widened portions 372 (that is, two subpixels adjacent in the Y direction) is one common electrode. It is driven by 35.

  That is, in the sub-panel 3, two subpixels adjacent to each other in the arrangement direction (vertical direction) of the common electrode 35 correspond to one common electrode 35, and the subpixel arrangement is a so-called double matrix. The array has a structure.

  According to this configuration, color display can be performed on both the main panel 2 and the sub panel 3. Further, since the number of segment electrodes 19 that are not connected to the segment electrodes 37 on the sub-panel 3 on the main panel 2 is further reduced, it is possible to compactly wire both the main panel 2 and the sub-panel 3. In particular, when the ratio of the number of pixels of the main panel 2 and the sub panel 3 arranged in the X direction is 2: 1, all the segment electrodes 19 on the main panel 2 are connected to the segment electrodes 37 on the sub panel 3, As a result, there is no variation in capacitance and resistance between the electrodes, and as a result, good display characteristics can be obtained without the need for a device as shown in the second embodiment or the third embodiment.

  As a specific example, in this embodiment, the number of pixels of the main panel 2 is 128 pixels (X direction) × 128 pixels (Y direction), and the number of segment electrodes 19 is 128 × 3 colors = 384. The number of common electrodes 15 is 128. On the other hand, the number of pixels of the sub panel 3 is 64 pixels (X direction) × 64 pixels (Y direction), and the number of segment electrodes 37 is 64 × 3 colors × 2 (double matrix structure) = 384, The number of the electrodes 35 is 64 ÷ 2 (double matrix structure) = 32. Therefore, compared with the case where the double matrix structure is not applied to the sub-panel 3, the number of the segment electrodes 37 can be made the same as the number of the segment electrodes 19 of the main panel 2, so that the capacity and the capacity between the segment electrodes can be reduced. It is possible to provide a liquid crystal module that can obtain good display characteristics without causing variations in resistance. Further, since the number of the common electrodes 35 can be reduced by 32, the main panel 2 can be narrowed.

[Electronics]
Hereinafter, an example of an electronic apparatus including the liquid crystal module according to the above embodiment will be described.
FIG. 9 is a schematic diagram illustrating a mobile phone which is an example of an electronic device. The mobile phone 300 is a foldable mobile phone having a first housing 301 and a second housing 302. The first casing 301 and the second casing 302 are connected via hinges 303 at their respective edge portions. As shown in FIG. 9A, the user starts from the state where the first housing 301 is opened at about 180 degrees with respect to the second housing 302 (open state), with the hinge 303 as an axis. By rotating one casing 301 toward the second casing 302, the first casing 301 and the second casing 302 face each other as shown in FIG. 9B (closed). The electronic device 300 can be folded so as to be in a state.

  On the surface of the second casing 302 facing the first casing 301 in the closed state, a plurality of operators 304 operated by the user and a microphone 305 for the user to input voice are provided. Be placed. On the other hand, an antenna 306 for performing wireless communication and a speaker 307 for outputting sound are disposed in the first casing 301, and the liquid crystal module 1 (electro-optical device) of the above-described embodiment is accommodated as an image display unit. Is done. The liquid crystal module 1 includes a main panel 2 and a sub panel 3. Each of the main panel 2 and the sub panel 3 is a display panel for displaying various images. An opening 308 is formed on the surface of the first housing 301 that faces the second housing 302 in the closed state. As shown in FIG. 9A, the main panel 2 is arranged so that its display surface is located inside the opening 308. On the other hand, an opening 309 is formed on the surface of the first housing 301 opposite to the opening 308 as shown in FIG. 9B. The sub panel 3 is arranged such that its display surface is located inside the opening 309. The user can visually recognize the surface image by the main panel 2 through the opening 308 and can visually recognize the display image by the sub panel 3 through the opening 309.

  Since the electronic apparatus shown in FIG. 9 includes an image display unit using the liquid crystal module 1 of the above embodiment, an image display unit having a narrow frame area in the main panel 2 and a high display quality in the sub panel 3 is also provided. The provided electronic device can be realized.

  The electro-optical device of the present invention can be mounted not only on the above-described mobile phone but also on various electronic devices. Examples of the electronic device include an electronic book, a personal computer, a digital still camera, a liquid crystal television, a viewfinder type or a monitor direct-view type video tape recorder, a car navigation device, a pager, an electronic notebook, a calculator, a word processor, a workstation, and a video phone. , A POS terminal, a device equipped with a touch panel, and the like, and the electro-optical device can be suitably used as these image display means.

  The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to such examples. Various shapes, combinations, and the like of the constituent members shown in the above-described examples are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

  For example, in the above embodiment, an example in which the main panel 2 performs color display and the sub-panel 3 performs monochrome display or color display has been described, but any combination of each panel and color display or monochrome display may be used. For example, when both the main panel 2 and the sub panel 3 are in monochrome display in the second embodiment or the third embodiment, the effect of color adjustment cannot be obtained, but the drive capacity variation generated between the segment electrodes of the main panel 2 is not obtained. It is possible to prevent the occurrence of display unevenness in black and white display due to the above. In addition, the color display is not limited to the three colors of red, green, and blue, but may be a plurality of four or more colors (that is, a configuration in which the color filter includes a plurality of colored layers of four or more colors).

  In the above embodiment, the main panel 2 and the sub panel 3 are both passive matrix type examples. However, the present invention may be applied to an active matrix type liquid crystal panel. In the case of the active matrix method, the change of the wiring width is the data line or the scanning line, and the change of the wiring width does not directly change the area of the sub-pixel, but it is also caused by the variation in the driving ability. It is possible to avoid display unevenness.

  In the above embodiment, the width of the segment electrode corresponding to the green sub-pixel is made smaller than the width of the segment electrode corresponding to the red or blue sub-pixel. An equal configuration is also conceivable. Even in such a case, the subpixels corresponding to the segment electrodes 19a connected to the segment electrode 37 on the subpanel 3 side are red and green, and the subpixels corresponding to the segment electrodes 19b not connected to the segment electrode 37 on the subpanel 3 side are blue. For example, if the light color of the backlight is appropriately adjusted so that the yellowish green color becomes stronger, the display color can be adjusted and color unevenness can be reduced.

  In the above embodiment, the driving IC 6 that drives the main panel 2 and the sub panel 3 is directly mounted on the substrate 11 of the main panel 2. Instead, the flexible substrate 7 that connects the driving IC 6 to the main panel 2. It is also possible to implement above.

  Furthermore, in the above-described embodiment, a liquid crystal module using two liquid crystal panels has been described as an example of an electro-optical device. However, the present invention is not limited to this, and other electro-optical panels such as an organic EL panel. It is possible to apply the present invention to an electro-optical device using this.

It is a perspective view showing the whole liquid crystal module composition concerning a 1st embodiment. It is sectional drawing of the liquid crystal module. It is a schematic plan view shown in the state which unfolded the liquid crystal module. FIG. 4 is a detailed plan view of FIG. 3. It is a top view which shows the display area of each panel of the liquid crystal module. It is a top view which shows the display area of the liquid crystal module which concerns on 2nd Embodiment. It is a top view which shows the display area of the liquid crystal module which concerns on 3rd Embodiment. It is a top view which shows the display area of the liquid crystal module which concerns on 4th Embodiment. It is a perspective view which shows an example of an electronic device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Liquid crystal module (electro-optical apparatus), 2 ... Main panel (1st panel), 3 ... Sub panel (2nd panel), 6 ... Driving IC (driving semiconductor element), 15 ... Common electrode (1st scanning line) , 17... Color filter, 19... Segment electrode (data line), 19 a... Segment electrode (first data line), 19 b... Segment electrode (second data line), 35. , 371, 372 ... segment electrodes (data lines), Dr, Dg, Db ... sub-pixels, P1, P2 ... pixels

Claims (8)

A first panel having a plurality of first scan lines and a plurality of data lines;
A second panel having a plurality of second scanning lines and a plurality of data lines electrically connected to data lines provided in the first panel;
A driving semiconductor element for supplying an electrical signal to both the first panel and the second panel;
The second scanning line is electrically connected to the driving semiconductor element via the first panel,
Two pixel regions corresponding to intersections between two adjacent data lines of the plurality of data lines provided on the second panel and one scanning line of the plurality of second scanning lines are the second panel. An electro-optical device, wherein the one second scanning line supplies a scanning signal to the two pixel regions, which are arranged in an extending direction of data lines provided in the first and second data lines.   Of the plurality of intersecting regions corresponding to the intersections of the plurality of first scanning lines and the plurality of data lines provided on the first panel, the first scanning lines are electrically connected to the data lines provided on the second panel. The area of the intersection region corresponding to the first data line is smaller than the area of the intersection region corresponding to the second data line that is not electrically connected to the data line provided in the second panel. The electro-optical device according to Item 1.   Of the plurality of data lines provided on the first panel, the resistance of the first data line electrically connected to the data line provided on the second panel is a data line provided on the second panel. 3. The electro-optical device according to claim 1, wherein the resistance of the second data line is not smaller than the resistance of the second data line. In the first panel, a plurality of sub-pixels are arranged corresponding to respective intersecting regions of the plurality of first scanning lines and the plurality of data lines provided in the first panel, and the plurality of the plurality of sub-pixels are arranged. A color filter including a plurality of colored layers disposed in a region overlapping with the sub-pixel is provided;
Among the plurality of sub-pixels, an area overlapping with the sub-pixel corresponding to the first data line electrically connected to the data line provided on the second panel has a predetermined color of the plurality of colors. In the region overlapping the sub-pixel corresponding to the second data line that is not electrically connected to the data line provided on the second panel, the predetermined color of the plurality of colors is disposed. The electro-optical device according to claim 1, wherein a colored layer of a color other than that is disposed.   Both the data lines provided on the second panel and the data lines provided on the first panel are segment electrodes functioning as display electrodes, and the first panel is electrically connected to the driving semiconductor element. 5. The electricity according to claim 4, wherein a common electrode functioning as the connected first scanning line is provided, and the region of the sub-pixel is formed in a region where the segment electrode and the common electrode intersect. Optical device.   The plurality of colors of the colored layer of the color filter include red, green, and blue, and the red or green colored layer is disposed in a region that overlaps a sub-pixel corresponding to the first data line. The electro-optical device according to claim 4, wherein the electro-optical device is provided.   In the second panel, a plurality of sub-pixels are arranged corresponding to each intersection region of the second scanning line and a plurality of data lines provided in the second panel, and the plurality of sub-pixels 7. The electro-optical device according to claim 1, further comprising a color filter including a plurality of colored layers arranged in a region overlapping with the color filter. An electronic apparatus comprising the electro-optical device according to claim 1.

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