JPWO2013105347A1 - Display device and display method - Google Patents

Abstract

A display panel (1) in which a plurality of independent display drivable regions (1a) each having independent signal lines and scanning lines and capable of independent display driving are formed on a single substrate; Corresponding to each of the independent display drivable regions (1a), the display panel (1) is provided on the back side opposite to the display surface, and each of the signal lines in the corresponding independent display drivable region (1a) and And a plurality of display drive circuit units (11) for driving the scanning lines to display and drive the independent display drive movable region (1a).

Description

  The present technology relates to a display device that performs image display and a method thereof.

JP-T-2006-509235 JP 2000-322039 A

  Display devices are increasing in size and screen size, and at present, display devices that support the so-called full high vision (full HD: number of horizontal pixels × number of vertical pixels = 1920 × RGB × 1080) standards have become widespread. ing.

  Further, in order to improve the image quality of moving images, a higher frame rate is being promoted. For example, there is a display device that realizes an operation at a frame rate of 1/240 sec.

Here, in the full HD panel, when writing is performed by the line sequential method under the condition of the frame rate = 1/60 sec, the writing time that can be secured per pixel is approximately 15.4 μsec.
If the frame rate is 1/240 sec, the write time that can be secured per pixel is 3.86 μsec.

In recent years, for example, 4K2K (the number of horizontal pixels × the number of vertical pixels = 4096 × RGB × 2160) and 8K4K (the number of horizontal pixels × the number of vertical pixels = 7680 × RGB × 4320) have been proposed. Has been.
For example, in the case of 4K2K, the writing time that can be secured per pixel is about 1.93 μsec, which is half of full HD, and in the case of 8K4K, it is about 0.96 μsec, which is half.

Here, since the writing time is proportional to the product of the resistance and the capacitance of the signal line, if the panel size increases due to the increase in screen size, it becomes difficult to increase the writing speed accordingly. Specifically, the writing time is disadvantageous in proportion to the square of the length.
From this point, the above-mentioned writing time is no longer a possibility of realization, and some countermeasure is required.

In addition, when the panel size increases as the number of pixels increases, an increase in power consumption becomes a problem.
Specifically, the power required for writing increases as the resistance / capacitance of the signal line increases. Therefore, if the length of the signal line is extended as the number of pixels increases, the power consumption increases.

  Here, these problems are caused by adopting a general panel structure, that is, a panel structure in which continuous signal lines and scanning lines are spread over all pixels in the horizontal and vertical directions. .

Therefore, a so-called tiling technique has been proposed as a technique for solving these problems. That is, by arranging a plurality of display panels in a tile shape, a display area formed by the plurality of display panels is handled as a single display panel.
For example, Patent Document 1 and Patent Document 2 have a description of such a tiling technique.

  However, in the tiling display device, since each display panel is connected to form one large screen, an image non-display area is formed at the joint portion of each display panel. That is, the display image is divided by the image non-display area of the joint portion, and the display quality is deteriorated.

  Therefore, the writing time and consumption that occur when the number of pixels is increased by the normal panel structure, that is, the panel structure in which continuous signal lines and scanning lines are distributed to all the pixels in the horizontal and vertical directions. It is desirable to prevent display quality degradation by realizing a seamless display screen while preventing the occurrence of an increase in power.

In a display device according to an embodiment of the present technology, a plurality of independent display driveable regions each having independent signal lines and scanning lines and capable of independent display drive are formed on a single substrate. A display panel.
Each of the independent display driveable regions is provided on the back side opposite to the display surface of the display panel, and drives the signal line and the scanning line in the corresponding independent display driveable region. A plurality of display drive circuit units for displaying and driving the independent display drive movable region are provided.

As described above, in one embodiment of the present technology, the display drive circuit unit is disposed on the back side of each independent display driveable region, and the backside drive method of driving each independent displayable region from the backside is adopted. .
By adopting such a back surface driving method, it is not necessary to adopt a configuration in which a display drive circuit unit for driving signal lines and scanning lines is arranged in the same layer as the wiring layers of these signal lines and scanning lines. That is, since it is not necessary to dispose the display drive circuit unit at the outer edge portion of each independent display driveable region, it is possible to prevent an image non-display region as a frame portion from being formed at the outer edge of each independent display driveable region. .
Under this, in one embodiment of the present technology, each independent display drivable region is formed on a single substrate. That is, it does not take a technique of connecting independent display driveable regions formed on independent substrates (that is, sealed by independent substrates) like tiling, but on each substrate. An independent display driveable region is formed.
Thereby, a seamless display device without a joint (frame portion) in the display screen can be realized.

According to an embodiment of the present technology, similarly to the tiling display device, each display area constituting one screen can be independently driven to display, so that the number of pixels is increased with a normal panel structure (continuous signal lines, It is possible to effectively avoid the problem of increase in writing time and power consumption that occurs when the number of pixels is increased by a panel structure in which the scanning lines are spread over all pixels in the horizontal and vertical directions. .
In addition, according to an embodiment of the present technology, a seamless display device without a joint (frame portion) in the display screen can be realized. That is, it is possible to provide a display device capable of preventing the deterioration of display quality while preventing the problem of increase in writing time and power consumption as described above.

It is a front view of the whole display panel with which the display of one embodiment is provided. It is an enlarged view (perspective view) about the boundary part of the independent display driveable area | region in a display panel. It is a cross-section figure of a display panel. It is a back surface (back surface) figure of a display panel. It is a cross-section figure of the whole display panel part. It is the figure which extracted and represented only the part corresponding to the one part pixel in the independent display driveable area | region about the specific formation aspect of a through-hole. It is explanatory drawing about the formation example (1st formation example) of the through-hole in the whole independent display driveable area | region. It is explanatory drawing about the other formation example (2nd formation example) of the through-hole in the whole independent display driveable area | region. It is explanatory drawing about the other example of formation of the through-hole in the whole independent display driveable area | region (3rd formation example). It is explanatory drawing about a tree structure. It is explanatory drawing about the specific operation | movement content of each part in a tree structure. It is explanatory drawing about the problem which arises when general line-sequential display is performed in the display apparatus of normal structure. It is explanatory drawing about the problem which arises when general line-sequential display is performed in the display apparatus of normal structure. In the display apparatus of this Embodiment, it is explanatory drawing about the problem when each independent display drivable area performs line sequential display. In the display apparatus of this Embodiment, it is explanatory drawing about the problem when each independent display drivable area performs line sequential display. It is explanatory drawing about the problem which arises when scanning to the outside from the screen center part. It is explanatory drawing about the problem which arises when scanning to the outside from the screen center part. It is explanatory drawing about the structure of the display panel assumed in the description about the method of all-pixel simultaneous light emission. 6 is a timing chart for explaining a specific operation example of data writing and light emission in one frame period. It is explanatory drawing about the internal structure of the display apparatus for implement | achieving the drive method as one Embodiment. It is explanatory drawing about a star structure. It is explanatory drawing about a lattice structure. It is the figure which showed the example of the data routing in case data update is needed in one independent display drive possible area | region on a display panel. It is the figure which showed the example of the data routing in case data update is needed in several independent display driveable area | regions on a display panel. It is explanatory drawing about the example of application to a plasma display. It is explanatory drawing about the example of application to a reflection type liquid crystal display.

Hereinafter, embodiments according to the present technology will be described.
The description will be given in the following order.
<1. Configuration of display panel section>
<2. Specific drive method>
[2-1. Tree structure]
[2-2. Star structure]
[2-3. Lattice structure]
<3. Modification>

<1. Configuration of display panel section>
First, with reference to FIG. 1 to FIG. 9, a structure of a display panel unit included in a display device as an embodiment according to the present technology will be described.
Here, as the characteristics of the structure of the display panel unit of the embodiment, the following can be mentioned.
・ Has driving wiring and driving integrated circuit on the back side of the display panel ・ The whole display panel is composed of a single substrate (including glass), and there is no seam ・ The display panel is driven by the corresponding driving integrated circuit A group of independent display driveable areas in which independent display drive is possible. The independent display driveable area is obtained by making drive wiring (scanning lines, signal lines) between the independent display driveable areas independent. Realize

Based on this point, first, the structure of the display panel 1 disposed on the front side of the display panel unit according to the embodiment will be described with reference to FIGS.
For confirmation, the “front side” of the panel refers to the display surface side on which an image is displayed.

FIG. 1 is a front view of the entire display panel 1.
As shown in FIG. 1, the display panel 1 is formed as an aggregate of a plurality of independent display driveable areas 1a.

FIG. 2 is an enlarged view (perspective view) of a boundary portion of the independent display drivable region 1a in the display panel 1. FIG.
In this figure, as the boundary line Dv of each independent display driveable area 1a, the vertical boundary line Dv (the boundary line Dv that partitions each independent display driveable area 1a in the horizontal direction) is the boundary line Dv-v, The boundary line Dv (the boundary line Dv that partitions each independent display driveable area 1a in the vertical direction) is represented as a boundary line Dv-h.

As described above, the display panel 1 of the present embodiment is formed by a single substrate as a whole panel. That is, there is no seam on the panel surface.
On the other hand, inside the panel, a plurality of independent display driveable areas 1a are arranged in a matrix, and each independent display driveable area 1a has independent scanning lines Lg and signal lines Ls as shown in the figure. doing. That is, the scanning lines Lg and the signal lines Ls are divided between the independent display driveable areas 1a. Specifically, each scanning line Lg is divided in the vicinity of the boundary line Dv-v in the vertical direction, and each signal line Ls is divided in the vicinity of the boundary line Dv-h in the horizontal direction.

  With such a structure, the display panel 1 of the present embodiment enables independent display driving for each independent display driveable region 1a, and the entire panel has a seamless screen on the display surface. realizable.

Further, as described above, since the signal line Ls is divided at the boundary of each region 1a, the charge / discharge power of the signal line Ls can be equal to that for driving the panel having the size of each region 1a. Become. That is, the problem of increase in power consumption due to the extension of the signal line Ls in increasing the number of pixels can be solved.
As for the signal writing time, assuming that a panel having the same size (the same number of pixels) as the display panel 1 is realized by a normal structure, for example, when the frame rate is 1/240 sec and the frame rate is 1/240 sec. On the other hand, it is very difficult to realize the driving of about 96 μsec, whereas in the case of the present embodiment, writing is performed by the number of pixels in each independent display driveable region 1a. The time required to drive the panel with the same number of pixels as that of the independent display driveable area 1a can be suppressed.
For example, while the writing time at full HD and frame rate = 1/240 sec is 3.86 μsec as described above, the number of pixels in each independent display driveable area 1a is set to 1/4 (960 × RGB × 540), the write time can be secured at about 7.72 μsec, and the required specifications can be relaxed.
For confirmation, the “normal structure” refers to a panel structure in which continuous signal lines and scanning lines are spread over all pixels in the horizontal and vertical directions.

  According to the display panel 1 of the present embodiment as described above, it is possible to provide a display device capable of large screen, high definition, and high speed driving.

FIG. 3 is a cross-sectional structure diagram of the display panel 1.
The display panel 1 of this example has a structure as a display panel of an organic EL (Electro Luminescence) display. More specifically, the display panel 1 in this case has a structure as a so-called top emission type organic EL display panel.

In the display panel 1 of the present example, a front glass 2 is formed with respect to the foremost surface serving as a display surface. Further, a glass substrate 8 is formed on the back surface side opposite to the display surface.
A protective layer 3, a light emitting layer 4, an insulating layer 5, a semiconductor / wiring layer 6, an insulating layer 7, a cathode electrode 9, and an anode electrode 10 are formed between the front glass 2 and the glass substrate 8.

As shown in the figure, the protective film 3 is formed on the lower layer side (back surface side) of the front glass 2, and protects the pixel portion formed on the lower layer side.
A cathode electrode 9 is formed on the lower layer side of the protective film 3, and a light emitting layer 4 is formed on the lower layer side of the cathode electrode 9. An anode electrode 10 is formed on the lower layer side of the light emitting layer 4, and a TFT (Thin Film Transistor) 6 a, a scanning line Lg, and a signal line Ls are formed on the lower layer side of the anode electrode 10 through the insulating layer 5. The formed semiconductor / wiring layer 6 is formed. The insulating layer 7 is formed so as to be inserted between the semiconductor / wiring layer 6 and the glass substrate 8.
Here, the TFT 6a formed in the semiconductor / wiring layer 6 is electrically connected to the anode electrode 10 through a contact portion penetrating the insulating layer 5 as shown in the figure.
In the case of this example, a through-hole described later is formed in the insulating layer 7 and the glass substrate 8 formed on the lower layer side of the semiconductor / wiring layer 6, but the illustration thereof is omitted here. .

FIG. 4 is a rear (back) view of the display panel 1.
As shown in the figure, on the back surface of the display panel 1, a driver chip 11 for driving the scanning lines Lg and the signal lines Ls formed in the independent display drivable area 1a is provided for each independent display drivable area 1a. .

The fact that the driver chip 11 is arranged on the back surface of the panel and each independent display driveable area 1a is driven from the back surface side of the panel also contributes to the realization of seamless image display. Specifically, by adopting such back surface driving, the display driving circuit unit as the driver chip 11 is arranged in the same layer as the wiring layer (wiring layer 6 in FIG. 3) of the signal lines Ls and the scanning lines Lg. You don't have to take it. That is, it is not necessary to dispose the display drive circuit unit on the outer edge of each independent display driveable region 11a. As a result, it is possible to prevent an image non-display area from being formed in a frame shape on the outer edge of each independent display driveable area 11a.
Further, only the signal line Ls and the scanning line Lg are divided at the boundary of each independent display driveable region 1a, and the pixels at the boundary portion can be formed adjacent to each other. Therefore, it is possible to realize a seamless image display in which there is almost no non-display area in the display image.

  Further, according to the above configuration, the same driver chip 11 can be used. As a result, cost reduction due to mass production effects can be achieved.

FIG. 5 is a diagram showing a cross-sectional structure of the entire display panel unit including the driver chip 11 shown in FIG.
Here, in order to realize the back surface driving, it is necessary to electrically connect the driver chip 11 provided on the back surface side of the panel and the signal lines Ls and the scanning lines Lg formed in the display panel 1.
For this reason, through holes are formed in the insulating layer 7 and the glass substrate 8 that are formed on the back side (lower layer side) of the semiconductor / wiring layer 6 where the signal lines Ls and the scanning lines Lg are formed. The through wiring 13 for supplying an electric signal from the driver chip 11 is passed through the through hole.

  Specifically, in the display panel portion in this case, a back surface wiring layer 12 is formed on the back surface side of the display panel 1, and an electric signal from the driver chip 11 provided on the back surface side is applied to the back surface wiring layer 12. The panel-driver wiring 12a for supplying the signal line Ls and the scanning line Lg via the through wiring 13 and the pair driver wiring 12b for enabling signal supply to the driver chip 11 are formed. Yes.

With such a structure, the driver chip 11 provided on the back side of the panel can drive the signal lines Ls and the scanning lines Lg in the display panel 1 based on an input signal from the outside.
Moreover, according to the said structure, it turns out that the display panel 1 itself can be produced using the existing manufacturing process.

6-9 is a figure for demonstrating the specific formation aspect of a through-hole.
First, as the through holes, it is necessary to form two types of through holes for signal lines and through holes for scanning lines as shown in FIG.
In FIG. 6, only a portion corresponding to a part of the pixels G in the independent display driveable region 1a is extracted and shown.
When realizing color display, the pixel G has three types of sub-pixels: an R sub-pixel Gs-R for red display, a G sub-pixel Gs-G for green display, and a B sub-pixel Gs-B for blue display. Consists of Gs.
The signal line Ls is wired for each of these subpixels Gs. Therefore, the number of through holes for signal lines is three times the number of pixels G arranged in the horizontal direction.

  For confirmation, it is sufficient that one signal line through hole is provided for each signal line Ls. Similarly, one scanning line through hole is also provided for each scanning line Lg. One should be provided.

Here, when the size of one subpixel Gs is estimated for the display panel 1 of 100 inches and 8K4K standards, it can be calculated to be approximately 96 μm × 288 μm (width W × height H).
From this estimate, it can be seen that in the case of 100 inches and 8K4K standards, a through hole having a diameter of about 50 μm can be formed.

FIG. 7 is an explanatory diagram of a through hole formation example (first formation example) in the entire independent display driveable region 1a.
In the first example of formation shown in FIG. 7, the signal line through holes are arranged in a straight line in the horizontal direction and the scanning line through holes are arranged in a straight line. A cross-shaped arrangement is realized by connecting intersections at the center of the display driveable area 1a.
With such a cross arrangement, the signal line output terminal portion 11s and the scanning line output terminal portion 11g to be formed on the driver chip 11 are replaced with the first signal line output terminal portion 11s-1 and the second signal line as shown in the figure. By forming the output terminal portion 11s-2, the second scanning line output terminal portion 11g-1 and the second scanning line output terminal portion 11g-2 separately, wiring from the driver chip 11 to each through hole is performed in the middle. Can be spread without crossing. That is, the layer for patterning the panel-driver wiring 12a shown in FIG. 5 can be formed by only one layer. As a result, the entire back wiring layer 12 formed on the back side of the display panel 1 -It can be formed of only two layers, that is, a layer for patterning the inter-driver wiring 12a and a layer for patterning the anti-driver wiring 12b.

Here, when the four regions formed by the cross-shaped dividing lines associated with the formation of the through holes are, for example, the first region, the second region, the third region, and the fourth region in the counterclockwise direction, the example shown in FIG. Then, the first scanning line output terminal portion 11g-1 is in the first region, the first signal line output terminal portion 11s-1 is in the second region, and the second scanning line output terminal portion 11g-2 is in the third region. The second signal line output terminal portion 11s-2 is formed in the fourth region.
In the case of cross-cutting as described above, by arranging each terminal portion separately for each region formed by the cross-cutting, the wiring can be spread without crossing, and as a result, as described above In addition, the total number of backside wiring layers 12 can be two.
By reducing the number of backside wiring layers 12, the manufacturing process of the backside wiring layer 12 is facilitated, and as a result, the production efficiency is improved.

Here, the points to be considered in order not to cross the wiring from the driver chip 11 to each through hole will be considered with reference to the respective formation examples shown in FIGS.
FIG. 8 is an explanatory view of another example of formation of the through hole in the entire independent display driveable region 1a (second formation example), and FIG. 9 is still another example of formation of the through hole in the entire independent display driveable region 1a. It is explanatory drawing about (3rd formation example).

In the second formation example shown in FIG. 8, two regions that are opposed to each other among the four regions formed when the independent display driveable region 1 a is divided by two diagonal lines in a plane parallel to the display surface. When the first assembly region and the second assembly region are used, the first assembly region is assigned to the signal line through hole formation region, and the second assembly region is assigned to the scanning line through hole formation region. Is.
Here, the signal line through hole forming region is a region where only the signal line through hole is to be formed as the through hole, and the scanning line through hole forming region is only the scanning line through hole as the through hole. Means a region to be formed.

  If the first grouped region and the second grouped region formed when the diagonal lines are divided in this way are assigned to the signal line through hole forming region and the scanning line through hole forming region, respectively, As in the first formation example (FIG. 7), four output terminal portions (11g-1, 11s-2, 11s-1, 11g-2) are distributed and arranged on the driver chip 11 corresponding to each region. Thus, the output wirings from the respective output terminal portions can be distributed to the respective through holes without crossing each other.

When comparing the area division by the diagonal line shown in FIG. 8 with the arrangement of each through hole shown in FIG. 7, the arrangement of the through holes shown in FIG. 7 is the second described above. It can be seen that this is in accordance with the arrangement rule of through holes as an example of formation. That is, as an example of the formation of the cross array shown in FIG. 7, the first and second grouped areas formed when the lines are separated by diagonal lines are divided into the signal line through hole forming area and the scanning line through hole, respectively. This corresponds to the one assigned to the hole forming region.
In view of this point, the second formation example shown in FIG. 8 can be regarded as the first formation example shown in FIG. 7 in which the formation positions of the through holes are dispersed within the range where the wiring does not intersect. it can. In other words, the second formation example shown in FIG. 8 is obtained by dispersing the formation positions of the through holes under the condition that the wirings are not crossed.
If the through holes are dispersedly arranged, a decrease in strength of the glass substrate 8 on which the through holes are formed can be effectively suppressed, and the occurrence of cracking or breakage of the glass substrate 8 due to the formation of the through holes can be prevented more firmly. it can.

  In the third example of formation shown in FIG. 9, one of the two regions formed when the independent display driveable region 1a is divided by one diagonal line in a plane parallel to the display surface is used as a signal line. The through-hole forming region for scanning and the other region are assigned to the through-hole forming region for scanning lines. Specifically, in the example of this figure, the signal line through holes are arranged in a straight line in the signal line through hole forming region, and the scanning line through holes are also arranged in a straight line in the scanning line through hole forming region. It is said.

As is apparent from the drawing, the wiring from the driver chip 11 to each through-hole can be spread without crossing by the third formation example.
In particular, in the third formation example, it is not necessary to separately form four output terminal portions in the driver chip 11 as in the first and second formation examples, and the signal line output terminal portion 11s and the scanning line are formed. It can be seen that by providing the two output terminal portions 11g, it is possible to prevent the intersection of the wirings.

  Here, in consideration of the formation example of FIGS. 8 and 9 described above, in extending the driver chip 11 from the driver chip 11 to each through hole without crossing the wiring, the signal line is set with the diagonal line of the independent display driveable area 1a as a boundary. It can be seen that it is important to divide the through-hole forming region for scanning and the through-hole forming region for scanning lines.

  For confirmation, in the third example of formation as well, as in the case of the second modification, the strength of the glass substrate 8 can be ensured by dispersing and arranging the through holes in each region. Is possible.

  Further, in each of the formation examples described above, the driver chip 11 is disposed at the center of the independent display driveable region 1a. With this, the maximum wiring length to the through hole can be shortened.

<2. Specific drive method>
Next, a specific driving method for the display panel unit described above will be described.
The driving method according to the embodiment can be broadly classified into a first driving method (tree structure), a second driving method (star structure), and a third driving method (lattice structure). Hereinafter, these driving methods will be described in order.

[2-1. Tree structure]
FIG. 10 is an explanatory diagram of the configuration of the display device for realizing the first driving method.
As shown in FIG. 10, the display device in this case includes a display panel 1 and a driver chip 11 provided for each independent display driveable region 1 a on the back side thereof, a master control unit 15, and a plurality of bridges. A circuit 16 is provided.

  Here, in the tree structure, a set of a predetermined number of independent display drivable regions 1a formed on the display panel 1 is handled as one block Bl. Specifically, if the total number of independent display drivable areas 1a formed in the entire display panel 1 is n, a set of m (n> m) independent display drivable areas 1a is defined as a block Bl. .

  FIG. 10 shows an example in which 8 × 8 = 64 independent display drivable regions 1 a are formed on the display panel 1. In this case, a set of 4 × 4 = 16 independent display drivable regions 1a is defined as one block Bl. As a result, a total of four blocks Bl are formed on the display panel 1 in this case.

In the display device in this case, one bridge circuit 16 is provided for each block Bl.
In the case of this example, the bridge circuit 16 is formed on the back surface side of the display panel 1 in the same manner as the driver chip 11.
For confirmation, in the case of a tree structure, the wiring from the bridge circuit 16 to each driver chip 11 corresponds to the anti-driver wiring 12b shown in FIG.

Based on the input video signal, the master control unit 15 generates a signal necessary to display an image based on the video signal on the display panel 1 and outputs the signal to each bridge circuit 16.
As shown in the figure, wiring from the master control unit 15 to each bridge circuit 16 is independent wiring (parallel wiring).

In each block Bl, a signal (particularly an image signal) output from the master control unit 15 is supplied to each driver chip 11 in the block Bl via the bridge circuit 16.
Each driver chip 11 drives the display of the corresponding independent display drivable region 1a based on the supplied signal.
As a result, an image is displayed on the display panel 1 in accordance with the input video signal.

  In such a tree structure, the bridge circuit 16 is arranged at the center of the block Bl. Accordingly, there is an advantage that the driver chip 11 closer to each bridge circuit 16 can have a margin in signal transfer time.

Here, with reference to FIG. 11, the specific operation content of the master control unit 15, the bridge circuit 16, and the driver chip 11 will be described.
FIG. 11 is a block diagram of the display device shown in FIG.
In FIG. 11, for the convenience of illustration, the total number of independent display drivable regions 1a (driver chips 11) formed on the display panel 1 is 16, and one block Bl includes four independent display drivable regions 1a ( It is assumed that it consists of a set of driver chips 11).

The outline of the operation contents of each part is as follows.
First, the master control unit 15 converts the entire image data based on the input video signal into data units of a predetermined length (for example, for each line of the independent display driveable area 1a or for each line of the independent display driveable area 1a or less). ), And packet data to which information (destination information) for specifying the driver chip 11 to be the transmission destination is attached to each divided image data obtained thereby is generated.
The packet data generated in this way is distributed to the corresponding bridge circuit 16. That is, the packet data is output to the bridge circuit 16 in charge of the block Bl to which the driver chip 11 (independent display driveable area 1a) represented by the destination information belongs.
The master control unit 15 regularly packetizes the data and sequentially transmits the packet data obtained thereby.
In this case, the packet data has a general structure including a header part, a data part, and a parity part.

  The master control unit 15 generates a timing signal for controlling the light emission timing of each independent display driveable area 1a and supplies it to each driver chip 11, which will be described later.

In this example, the image data is transmitted in a compressed state. Thereby, the transmission band can be reduced and the memory capacity can be reduced.
Examples of image compression methods include MPEG2 and H.264. Alternatively, when high-speed display is realized while reducing the cost of the driver chip 11, it is desirable to adopt a compression method with a relatively light decoding processing load such as DPCM (Differential Pulse-code Modulation).

The bridge circuit 16 mainly performs branch output of data. Specifically, the packet data supplied from the master control unit 15 is converted from serial to parallel, and each packet data supplied from the master control unit 15 is distributed to all the driver chips 11 in the block Bl. .
In this case, the bridge circuit 16 also performs a parity check on the packet data.
Specifically, packet data serially transferred from the master control unit 15 is buffered with a predetermined bit length, and parity match / mismatch is determined.

The driver chip 11 reads the header portion of the packet data distributed from the corresponding bridge circuit 16 and determines whether the packet data is addressed to itself.
If the distributed packet data is addressed to itself, the corresponding independent display driveable area 1a is driven to display based on the image data included in the packet data.
Here, since the image data is transmitted in the compressed state in this example as described above, each driver chip 11 correspondingly performs the expansion processing (decoding processing) on the image data in the packet. Then, the display drive is executed for the independent display drive enabled region 1a.

Here, as a specific method of display driving in each independent display driveable region 1a, it is appropriate to drive so that display is performed in line sequential manner as in the case of display driving for a normal display panel. Can be considered.
However, it has been found that if line-sequential display is performed in each independent display drivable area 1a, the boundary portion of each independent display drivable area 1a may be easily perceived when displaying a moving image. .
This point will be described below with reference to FIGS. 12A and 12B and FIGS. 13A and 13B.

12A and 12B are explanatory diagrams of problems that occur when general line-sequential display is performed in a display device having a normal structure.
When line-sequential display as shown in FIG. 12A is performed, when the display image (moving image) is an image in which the subject moves in the horizontal direction of the screen as shown in FIG. 12B, it is within the frame in FIG. 12B. As shown in the display screen, it is perceived by human eyes that the subject appears to be tilted in the direction opposite to the moving direction.

FIGS. 13A and 13B are explanatory diagrams for problems in the case where each independent display drivable area 1a performs line-sequential display in the display panel 1 of the present embodiment.
When line-sequential display as shown in FIG. 12A is performed in each independent display drivable area 1a as shown in FIG. 13A, the same phenomenon as described in FIG. 12B in each independent display drivable area 1a, That is, a phenomenon occurs in which the subject is perceived as being tilted in the direction opposite to the moving direction in each independent display driveable area 1a.
As a result, as to how the image looks, the boundary portion (boundary line portion extending in the horizontal direction) of each independent display driveable area 1a is perceived as in the perceptual image shown in the frame of FIG. 13B.
Specifically, immediately after the lower part of a certain independent display drivable area 1a is updated, the upper part of the adjacent independent display drivable area 1a is updated, so that one frame is obtained as an image. Since the divided images are displayed adjacent to each other, it is perceived that the image is cut at the boundary portion in the vertical direction (vertical direction) of each independent display driveable area 1a.

As an image scanning method, there is a method of scanning from the center of the screen to the outside.
14A and 14B are explanatory diagrams of problems that occur when scanning from the center to the outside is performed. As shown in FIG. 14A, in the display panel 1 of the present embodiment, such a problem is caused. When a scan is performed, when an image in which the subject moves in the horizontal direction as shown in FIG. 14B is obtained as the display image, the scan start position (that is, the center in this case, as shown in the frame in FIG. 14B). The upper and lower sides of the subject are perceived as being inclined to the opposite side of the moving direction. That is, the image is perceived as being divided at the center of the screen.

In this embodiment, in order to avoid these problems, a driving method as described below is adopted.
That is, in each independent display drivable area 1a, signal writing is performed in a line-sequential format in each independent display drivable area 1a, but light emission is performed simultaneously in each independent display drivable area 1a. Is.
More specifically, in the following description, an example in which all pixels of the display panel 1 emit light simultaneously will be described.

FIG. 15 and FIG. 16 are explanatory diagrams of such a technique for all-pixel simultaneous light emission.
FIG. 15 is an explanatory diagram of the configuration of the display panel 1 that is assumed in the description.
In the description, it is assumed that there are four independent display drivable regions 1a formed on the display panel 1. Specifically, an independent display drivable area 1a (hereinafter referred to as “area A”) including the scan start position (the position on the top left in the drawing), and an independent display drivable area 1a adjacent to the right side thereof. (Hereinafter referred to as “region B”), an independent display drivable region 1 a adjacent to the lower side of the region A (hereinafter referred to as “region C”), and an independent display drivable region 1 a adjacent to the right side of the region C (hereinafter referred to as “region D”). )).

Further, in the description, it is assumed that one independent display driveable region 1a is composed of four horizontal lines.
Here, the four lines formed in the region A are expressed as coordinates (0, 0) (0, 1) (0, 2) (0, 3) in order from the upper side.
Further, the four lines formed in the region B are expressed as coordinates (1, 0) (1, 1) (1, 2) (1, 3) in order from the upper side.
In addition, the four lines formed in the region C are expressed as coordinates (0, 4) (0, 5) (0, 6) (0, 7) in order from the upper side, and the four lines formed in the region D are the upper side. The coordinates are expressed as (1, 4) (1, 5) (1, 6) (1, 7) in order.

FIG. 16 is a timing chart for explaining a specific operation example of data writing and light emission in one frame period.
First, in the figure, a vertical synchronization signal Vsync is shown. For example, the rise timing of the vertical synchronization signal Vsync corresponds to one frame period.

  In the figure, the transfer clock of the master control unit 15 and the clock of each driver chip 11 are shown. As shown in the figure, the transfer clock of the master control unit 15 is set to have a higher frequency than the clock of each driver chip 11.

The master control unit 15 transfers (serial transfer) the image data of the uppermost line of each independent display drivable area 1a constituting the display panel 1 to the bridge circuit 16 in response to the start of one frame period. At this time, the master control unit 15 sends line data to the bridge circuit 16 (0, 0) → (1, 1, so that the write scan is performed in the order of area A → area B → area C → area D. 0) → (0,4) → (1,4) in this order.
As described above, the bridge circuit 16 transfers the data (packet data) transferred from the master control unit 15 in parallel to the corresponding driver chips 11 (serial to parallel conversion).

  Each driver chip 11 determines whether or not the transferred packet data is addressed to itself, and if it is addressed to itself, the corresponding independent display can be driven based on the image data (line data) in the packet data. Data is written to the corresponding line in the area 1a. As described above, in the case of this example, since the master control unit 15 transfers the image data in a compressed state, the driver chip 11 decodes the image data in the packet data and then writes the data to the corresponding line. .

  At this time, as described above, the master control unit 15 serially transfers the line data in the order of (0, 0) → (1, 0) → (0, 4) → (1, 4). The write start timing at D is shifted in the order of area A → area B → area C → area D as shown in the figure. The driver chip 11 in the area A performs data writing to the corresponding line in the area A in response to receiving and decoding all the (0, 0) line data, and the driver chip 11 in the area B is (1,0). ) Is written to the corresponding line in the area B in response to the reception and decoding of all the line data. Similarly, the driver chip 11 in the area C performs data writing to the corresponding line in the area C in response to receiving and decoding all the (0, 4) line data, and the driver chip 11 in the area D is (1 , 7) In response to reception / decoding of all the line data, data writing to the corresponding line in the region D is performed.

  Since the bridge circuit 16 only performs serial-to-parallel conversion on the transfer data from the master control unit 15 as described above, the delay can be almost ignored. Therefore, in this figure, the delay due to the bridge circuit 16 is not considered.

  In addition, after transferring the image data of the uppermost line of each independent display driveable area 1a constituting the display panel 1 to the bridge circuit 16 as described above, the master control unit 15 stores each independent display driveable area 1a. The image data of the second line is transferred to the bridge circuit 16. Also in this case, considering the order of the write scan, the master control unit 15 sends the line data to the bridge circuit 16 in the order of (0, 1) → (1, 1) → (0, 5) → (1, 5). Is output to the bridge circuit 16.

  As described above, each driver chip 11 starts data writing to the corresponding line in the corresponding area in response to receiving and decoding all the line data, so that (0, 1) → (1, 1 ) → (0, 5) → (1, 5) In this order, line data is written.

Thereafter, similarly, transfer of each line data by the master control unit 15 and data writing by the driver chip 11 are performed.
Then, after writing the line data of the line (1, 7) as the scan end line, at a predetermined timing before the end timing of one frame period, the master control unit 15 performs the regions A to D. A timing signal for instructing light emission is output to each of the driver chips 11.
As a result, each independent display drivable region 1a (all pixels of the display panel 1) constituting the display panel 1 performs a light emitting operation all at once.

In this way, if line-sequential writing is performed in the first half of one frame period and all pixels are simultaneously emitted in the second half, it is possible to prevent the image after one frame from being displayed adjacently. As shown in FIG. 13B, it is possible to effectively prevent the occurrence of a problem that the boundary portion of each independent display driveable area 1a is perceived.
In addition, the problem of subject deformation as shown in FIG. 14B can be effectively prevented.

FIG. 17 is an explanatory diagram of the internal configuration of the display device for realizing the driving method according to the embodiment described above.
FIG. 17 mainly shows the internal configuration of the driver chip 11.

  As illustrated, the driver chip 11 includes a packet input unit 11A, a decoder 11B, a signal processing unit 11C, a display driving unit 11D, and a frame memory 11E. Further, a data bus 11F for enabling data communication between these units is provided.

The packet input unit 11A inputs packet data from the master control unit 15 transferred via the bridge circuit 16, and determines a destination. That is, it is determined by referring to the header portion of the input packet data whether the packet data is addressed to itself.
If the packet data is addressed to itself, the data portion (image data) of the packet data is supplied to the decoder 11B.
The decoder 11B performs decoding processing (decompression processing of compressed image data) for the image data supplied from the packet input unit.

The frame memory 11E buffers (primarily accumulates) the image data decoded by the decoder 11B for each line.
The signal processing unit 11C performs necessary signal processing on the image data stored in the frame memory 11E, thereby performing various panel driving signals (signals necessary for panel display driving such as driving signals for the signal lines Ls and scanning lines Lg). )

The display driving unit 11D is based on various panel driving signals obtained by the signal processing unit 11C and a timing signal (light emission timing control signal) supplied from the master control unit 15 to correspond to an independent display driveable region. 1a is driven to display.
As can be understood from the description of FIG. 16, the timing signal from the master control unit 15 in this case is a signal for synchronizing the light emission timing of each independent display driveable area 1a. Simultaneous light emission (simultaneous light emission) is realized in each independent display drivable region 1a for each frame.

  In the above description, it is assumed that the entire screen of the display panel 1 emits light simultaneously (all pixels constituting the display panel 1 emit light simultaneously). For example, it is necessary to take measures such as increasing the withstand voltage of the components of the power supply circuit unit, which may increase the cost.

Therefore, a method of shifting the light emission timing for each of the plurality of independent display driveable areas 1a in the display panel 1 can also be adopted.
At this time, the amount of shifting the light emission timing is set within a range in which the shift of the light emission timing is not visually perceived by humans. In other words, the light emission timing is shifted within a range that is visually perceived as simultaneous light emission by all pixels.

  This makes it possible to effectively reduce the power peak value while preventing the occurrence of the problem described in FIG. 13B and FIG. 14B, and to avoid the use of high-voltage products. This can prevent an increase in product cost.

  For confirmation, the method of shifting the light emission timing for each of the plurality of independent display driveable regions 1a belongs to the category of methods for simultaneously emitting light in each independent display driveable region 1a. is there.

[2-2. Star structure]
FIG. 18 is an explanatory diagram of a configuration of a display device for realizing the second driving method (star structure).
As shown in FIG. 18, in this star structure, the bridge circuit 16 inserted between the master and each driver in the previous tree structure is omitted, and the master control unit 20 and each driver chip 11 as shown in FIG. Are directly connected. That is, the master control unit 20 in this case outputs data in parallel to each driver chip 11.

In this star structure, when the display data is updated only for a part of the screen, the master control unit 20 sends the data only to the wiring for the independent display drivable area 1a (driver chip 11) corresponding to the updated area. Data is not sent to the wiring for the other driver chip 11.
At this time, the driver chip 11 that has received the data updates the pixel based on the data, and the driver chip 11 that has not received the data refers to the data stored in the frame memory 11E shown in FIG. Update the pixel.

  As described above, according to the star structure, when the display data of only a part of the screen is updated, the amount of data communication can be effectively suppressed. For example, a part of the screen displays a still image and the other part displays a moving image. This is particularly suitable when performing the above.

[2-3. Lattice structure]
FIG. 19 is an explanatory diagram of a configuration of a display device for realizing the third driving method (lattice structure).
As shown in FIG. 19, in the lattice structure, network-like wirings are provided in which the driver chips 11 in the independent display driveable area 1a that are adjacent to each other are connected to each other.
In this case, the master control unit 21 may be connected to at least one driver chip 11 in the display panel 1 in supplying data to each driver chip 11. In the example of this figure, the master control unit 21 is connected to each driver chip 11 arranged at the lowermost stage on the display panel 1.
In this case, the master control unit 21 sends data including destination information, for example, in the same way as the previous packet data, so that the data is properly sent to the target driver chip 11.

In this star structure, each driver chip 11 has a function of not only receiving data but also relaying data to adjacent driver chips 11.
In order to send data to one driver chip 11, there are a plurality of paths. However, it is important to determine a data transmission path so that data is not concentrated on one path as much as possible. At the same time, it is important to shorten the data transmission path length as much as possible in order to increase the frame rate.
For example, a routing function in Internet communication can be applied to the determination of the data transmission route.

A specific example of data routing will be described with reference to FIGS.
FIG. 20 shows an example of data routing in the case where data update is necessary in one independent display drivable area 1a on the display panel 1.
When data update is required only in one independent display driveable area 1a, it is effective to select the shortest path as shown in the figure as a transmission path from the master control unit 21 to the corresponding driver chip 11.

FIG. 21 shows an example of data routing when data update is required in a plurality of independent display driveable areas 1a on the display panel 1.
Specifically, this figure illustrates a case where data updating is required in six consecutive (2 × 3) independent display driveable areas 1a.

When data update is required in a plurality of independent display driveable areas 1a, routing is performed so that data is not concentrated on one path as much as possible and the data transmission path length is as short as possible for each corresponding driver chip 11. I do.
This figure shows an example of routing in which update data is transmitted to each driver chip 11 through different paths (that is, data transmission paths are prevented from overlapping) and the transmission path length to each driver chip 11 is the shortest. ing.

  For confirmation, it is necessary to select the shortest route as the transmission route because the data transfer bandwidth to each driver chip 11 has the capability to cope with simultaneous rewrite (data update) of the entire surface. Absent.

Here, on a large-screen display device, not only the moving image is projected using the entire display surface, but the moving image is displayed only in a part of the area and only a part of the screen is updated by editing work or the like. The law is expected to increase.
The lattice structure described above is also suitable for displaying data that needs to be updated only on a part of the screen.

<3. Modification>
As mentioned above, although embodiment which concerns on this technique was described, this technique should not be limited to the specific example demonstrated so far.
For example, in the description so far, the case where the present technology is applied to an organic EL display has been illustrated, but the present technology can be widely applied regardless of a self-luminous type display or a non-self-luminous type display.

As an example, FIG. 22 shows an application example to a plasma display.
In the case of a plasma display, a through hole is formed on the back side of the display panel 25 in which each cell 32 corresponding to a subpixel is formed, and a data electrode 34 (signal) provided for each cell 32 through the through hole. The through-hole wiring 27 for electrically connecting the line) and the driver chip 36 may be passed.

  Specifically, the display panel 25 in this case is formed with a front glass 28, a transparent electrode 29, and a dielectric 30 in order from the front side thereof, and cells 32 each separated by a rib 31 are formed on the lower layer side thereof. Has been. As shown in the figure, the cell 32 includes an R phosphor 33R formed therein for red display, a G phosphor 33G formed therein for green display, and a cell 32 therein. The B phosphor 33B is formed, and three types of cells 32 that perform blue display are formed, and these form one pixel in one set.

  A data electrode 34 is formed below each phosphor 33. A back glass 35 is formed on the lowermost layer of the display panel 25.

A backside wiring layer 26 is formed on the backside of the back glass 35. In the back surface wiring layer 26, similarly to the back surface wiring layer 12, the panel-driver wiring 26a and the pair driver wiring 26b are formed.
As shown in the figure, a through hole is formed in the rear glass 35, and the data electrode 34 and the panel-driver wiring 26 a are electrically connected through the through hole 27 through the through hole. Thus, the driver chip 36 can drive the data electrodes via the panel-driver wiring 26a.

  Although not shown, the display panel 25 is also provided with scanning lines in this case, and the scanning lines and the driver chip 36 are electrically connected through a through-hole formed in the rear glass 35. The driver chip 35 can drive the scanning line.

FIG. 23 shows an application example to a reflective liquid crystal display.
Also in this case, as an outline, the back surface wiring layer 41 to which the driver chip 52 is connected is provided on the back surface side of the display panel 40 in which pixels are formed, and a through hole is formed on the back surface side of the display panel 40. The signal lines and scanning lines provided in the display panel 40 and the driver chip 52 are electrically connected through the through-holes 42 through the through-holes.

  Specifically, the display panel 40 in this case has a front glass 43, a color filter 44, and a transparent electrode 45 formed in order from the forefront side, and a liquid crystal layer 46, a reflective electrode 47, and an insulating layer 48 on the lower layer side. The semiconductor / wiring layer 49, the insulating layer 50, and the glass substrate 51 are sequentially formed.

  As the color filter 44, an R color filter 44R for red display, a color filter 44G for green display, and a B color filter 44B for blue display are formed as shown in the figure, and each of the color filters 44 has a reflective electrode 47 and a TFT 49a. Is provided. Each set of the color filter 44, the reflective electrode 47, and the TFT 49a is provided corresponding to one subpixel, and one pixel is constituted by a set of three colors of R, G, and B.

In the semiconductor / wiring layer 49, the TFT 49a is formed, and signal lines and scanning lines are provided.
Here, the TFT 49 a is electrically connected to the reflective electrode 47 by a contact portion that penetrates the insulating layer 48.

  The signal lines and the scanning lines in the semiconductor / wiring layer 49 are connected to the insulating layer 50 formed on the lower layer side and the through wiring 42 penetrating the glass substrate 51.

In the back surface wiring layer 41, the panel-driver wiring 41a and the pair driver wiring 41b are formed as in the back surface wiring layer 12.
In the backside wiring layer 41, the panel-driver wiring 41a is connected to the above-described through wiring 42, so that the driver chip 52 can drive the signal line and the scanning line via the panel-driver wiring 41a. it can.

  For confirmation, in the display panel 25 shown in FIG. 22 and the display panel 40 shown in FIG. 23, the signal lines and the scanning lines are divided in the middle as shown in FIG. The plurality of independent display drivable regions 1a are formed on the panel.

  Further, in the case of a liquid crystal display, when simultaneous light emission as described above is performed, the light source (or backlight) may be controlled to be turned on only in the second half of one frame period.

  Further, the structure shown in FIG. 23 can be applied almost similarly when the present technology is applied to electronic paper.

  In the above description, it is assumed that the wiring from the master to the driver is an electrical wiring. However, optical wiring (optical cable) can also be adopted particularly in the lattice structure described above.

In addition, the present technology may employ the following configurations.
(1)
A display panel in which a plurality of independent display drivable regions, each of which has independent signal lines and scanning lines, and capable of independent display driving, are formed on a single substrate;
Corresponding to each of the independent display drivable regions, provided on the back side opposite to the display surface of the display panel, each driving the signal line and the scanning line in the corresponding independent display drivable region. And a plurality of display drive circuit units for driving the independent display drive movable region.
(2)
On the back side of the display panel, through holes are formed to connect each display drive circuit unit and the signal lines and the scanning lines in the corresponding independent display driveable area, respectively (1) The display device described in 1.
(3)
Each independent display drivable region includes a signal line through hole forming region in which the through hole for the signal line is formed and a through hole for the scanning line, with a diagonal line of the independent display drivable region as a boundary. The display device according to (2), wherein the display device is divided into a through-hole forming region for a scanning line to be formed.
(4)
Each of the independent display drivable regions is a first group region composed of two regions facing each other among four regions formed when two diagonal lines are separated on a plane parallel to the display surface. , And divided into a second set region composed of two regions that are opposed to each other in a direction different from the direction of the opposed relationship in the first set region,
The first assembly region is the signal line through hole forming region;
The display device according to (3), wherein the second set region is the through-hole forming region for scanning lines.
(5)
The display device according to any one of (1) to (4), further including a display control unit that generates a signal corresponding to input video data and supplies the signal to each display drive circuit unit.
(6)
The display control unit supplies image data in a compressed state to each display drive circuit unit,
Each display drive circuit section
The display device according to (5), wherein the signal line and the scanning line in the corresponding independent display driveable area are driven based on the result of expanding the image data.
(7)
The display control unit
A master circuit unit that generates and outputs a signal corresponding to the input video data;
Each of the plurality of display drive circuit units is provided corresponding to a predetermined number of the display drive circuit units, and each of them outputs an output signal from the master circuit unit in parallel to the predetermined number of display drive circuit units. The display device according to (5) or (6), further including: a plurality of bridge circuit units for outputting.
(8)
The display control unit
The display device according to (5) or (6), further including a circuit unit that generates a signal corresponding to the input video data and outputs the signal in parallel to each display drive circuit unit.
(9)
The display drive circuit parts in the adjacent arrangement relationship are connected by wiring,
The display control unit
As a signal corresponding to the input video data, a signal including destination information designating one display drive circuit unit as a reception destination is generated, and the signal is transmitted to at least one of the plurality of display drive circuit units. The display device according to (5) or (6).
(10)
The display control unit
The display device according to any one of (5) to (9), wherein a timing signal for simultaneously emitting all the pixels in the independent display driveable region is generated and supplied to each display drive circuit unit.
(11)
The display control unit
The display device according to (10), wherein a timing signal for causing all pixels formed on the display panel to emit light simultaneously is generated and supplied to each display drive circuit unit.
(12)
The display control unit
The display device according to (10), wherein the timing signal is generated and supplied to each display driving circuit unit so that the timing of the simultaneous light emission varies between the independent display driveable regions.
(13)
With respect to a display panel in which a plurality of independent display driveable regions, each of which has independent signal lines and scanning lines, and which can be driven independently of each other, are formed on a single substrate,
A display method of driving the signal lines and the scanning lines of each independent display driveable region from the back side opposite to the display surface of the display panel, and driving the independent display drive movable region.

  This application claims priority on the basis of Japanese Patent Application No. 2012-001963 filed on January 10, 2012 at the Japan Patent Office. The entire contents of this application are hereby incorporated by reference. Incorporated into.

  Those skilled in the art will envision various modifications, combinations, subcombinations, and changes, depending on design requirements and other factors, which are within the scope of the appended claims and their equivalents. It is understood that

Claims (13)

A display panel in which a plurality of independent display drivable regions, each of which has independent signal lines and scanning lines, and capable of independent display driving, are formed on a single substrate;
Corresponding to each of the independent display drivable regions, provided on the back side opposite to the display surface of the display panel, each driving the signal line and the scanning line in the corresponding independent display drivable region. And a plurality of display drive circuit units for driving the independent display drive movable region. The through hole for connecting each display drive circuit part and the signal line and the scanning line in the corresponding independent display driveable area is formed on the back side of the display panel. The display device described. Each independent display drivable region includes a signal line through hole forming region in which the through hole for the signal line is formed and a through hole for the scanning line, with a diagonal line of the independent display drivable region as a boundary. The display device according to claim 2, wherein the display device is divided into a scan-line through-hole forming region to be formed. Each of the independent display drivable regions is a first group region composed of two regions facing each other among four regions formed when two diagonal lines are separated on a plane parallel to the display surface. , And divided into a second set region composed of two regions that are opposed to each other in a direction different from the direction of the opposed relationship in the first set region,
The first assembly region is the signal line through hole forming region;
The display device according to claim 3, wherein the second set region is the through-hole forming region for the scanning line. The display device according to claim 1, further comprising: a display control unit that generates a signal corresponding to the input video data and supplies the signal to each display drive circuit unit. The display control unit supplies image data in a compressed state to each display drive circuit unit,
Each display drive circuit section
The display device according to claim 5, wherein the signal line and the scanning line in a corresponding independent display driveable area are driven based on a result of expanding the image data. The display control unit
A master circuit unit that generates and outputs a signal corresponding to the input video data;
Each of the plurality of display drive circuit units is provided corresponding to a predetermined number of the display drive circuit units, and each of them outputs an output signal from the master circuit unit in parallel to the predetermined number of display drive circuit units. The display device according to claim 5, further comprising: a plurality of bridge circuit units that output. The display control unit
The display device according to claim 5, further comprising a circuit unit that generates a signal corresponding to the input video data and outputs the signal in parallel to each display drive circuit unit. The display drive circuit parts in the adjacent arrangement relationship are connected by wiring,
The display control unit
As a signal corresponding to the input video data, a signal including destination information designating one display drive circuit unit as a reception destination is generated, and the signal is transmitted to at least one of the plurality of display drive circuit units. The display device according to claim 5. The display control unit
The display device according to claim 5, wherein a timing signal for causing all pixels in the independent display driveable region to emit light simultaneously is generated and supplied to each display drive circuit unit. The display control unit
The display device according to claim 10, wherein a timing signal for causing all pixels formed on the display panel to emit light simultaneously is generated and supplied to each display driving circuit unit. The display control unit
The display device according to claim 10, wherein the timing signal is generated so as to vary the timing of the simultaneous light emission between the independent display driveable regions and is supplied to each display drive circuit unit. With respect to a display panel in which a plurality of independent display driveable regions, each of which has independent signal lines and scanning lines, and which can be driven independently of each other, are formed on a single substrate,
A display method of driving the signal lines and the scanning lines of each independent display driveable region from the back side opposite to the display surface of the display panel, and driving the independent display drive movable region.

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