KR101589755B1 - Display Device Array Substrate - Google Patents

Abstract

The present invention relates to a semiconductor device comprising a substrate, a data pad located on one side of the substrate, a scan pad facing the data pad, the scan pad located on the other side of the substrate, and a plurality of data lines drawn obliquely from the data pad, And a plurality of scan lines extended to the scan lines, wherein the data lines and the scan lines cross each other to define a plurality of unit pixels.

Display device

Description

[0001] Display Device Array Substrate [

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device array substrate, and more particularly, to a display device array substrate capable of implementing a cylindrical flexible display device.

Description of the Related Art [0002] In recent years, the importance of display devices has been increasing with the development of multimedia. In accordance with this, a liquid crystal display (LCD), a plasma display panel (PDP), a field emission display (FED), an organic light emitting diode (OLED) ), An electrophoretic display (EPD), and the like are put into practical use.

In recent years, portability of a display device is required so that information can be received at a desired time and place, and lightness for carrying is required. In order to satisfy such portability and light weight, there is a need to develop a flexible display device capable of bending or folding.

Among them, the electrophoretic display device is an image display device using a phenomenon in which colloidal particles move to either one polarity when a pair of electrodes to which a voltage is applied is immersed in a polyide solution.

1 and 2 are views showing a conventional electrophoretic display device.

Referring to FIG. 1, the electrophoretic display device 100 includes a data pad 120 on one side of a substrate 110 and a scan pad 130 on a lower side of the substrate 110. A plurality of data lines 125 are drawn from the data pad 120 and a plurality of scan lines 135 are drawn vertically from the scan pad 130. Accordingly, the scan lines 235 and the data lines 125 vertically intersect to divide a plurality of unit pixels P. Accordingly, a voltage is applied to the electrophoretic film located on the substrate 110 to implement an image.

However, when the flexible electrophoretic display device 100 is bent into a cylindrical shape as shown in FIG. 2, the data pad 120 located on one side of the substrate 110 causes the image to be transferred to the front side of the cylindrical shape There is a problem that is not displayed.

Therefore, when an electrophoretic display device is applied to columns or structures of a building, an image is not displayed on the front surface of the display device, resulting in deterioration of practicality.

Accordingly, the present invention provides a display device array substrate capable of displaying an image on a front surface of a cylindrical display device.

According to an aspect of the present invention, there is provided a display device array substrate including a substrate, a data pad disposed on one side of the substrate, a scan pad facing the data pad, A plurality of data lines drawn obliquely from the data pad and a plurality of scan lines drawn obliquely from the scan pad, and the data lines and the scan lines intersect with each other to define a plurality of unit pixels.

The data pad may include a data driver and a data pad line.

And an auxiliary data pad at an edge of the substrate on which the scan pad is located.

The auxiliary data pad may include an auxiliary data driver and an auxiliary data pad line.

The scan pad may include a scan driver and a scan pad line.

And an auxiliary scan pad at an edge of the substrate on which the data pad is located.

The auxiliary scan pad may include an auxiliary scan driver and an auxiliary scan pad line.

The unit pixel may have a parallelogram shape in cross section parallel to the substrate.

The unit pixel may include a gate electrode, a semiconductor layer, a source electrode, a drain electrode, and a pixel electrode.

The pixel electrode may be located on the scan line to form a capacitor.

The substrate may be made of plastic.

And an electrophoretic film disposed on the substrate, the electrophoretic film including a capsule having charged dye particles.

And a color filter substrate disposed on the substrate and including a liquid crystal layer and a color filter.

The substrate may be cylindrical.

According to another aspect of the present invention, there is provided a display device array substrate including a cylindrical substrate, a data pad disposed at an upper end of the substrate, a scan pad disposed at a lower end of the substrate, And a plurality of scan lines drawn obliquely from the scan pads, wherein the data lines and the scan lines intersect with each other to define a plurality of unit pixels.

The display device array substrate according to the embodiment of the present invention includes a data pad and a scan pad arranged on the upper and lower sides of the substrate, and the data line and the scan line are crossed obliquely to form unit pixels of a parallelogram shape, There is an advantage that even if the display device is manufactured, the image can be implemented on the front without being cut off.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a view illustrating a display device array substrate according to an embodiment of the present invention.

3, a display device array substrate 200 according to an exemplary embodiment of the present invention includes a substrate 210, a data pad 220 disposed on one side of the substrate 210, A plurality of data lines 225 extending in a diagonal direction from the data pad 220 and a plurality of data lines 225 drawn in a diagonal line from the scan pad 230, And the scan line 235 intersects the data line 225 and the scan line 235 to define a plurality of unit pixels P.

In more detail, the substrate 210 can be made of plastic with a flexible nature and can be made of, for example, polyacrylate, polyethylene ether phthalate, polyethylene naphthalate, polycarbonate, polyarylate, polyetherimide, polyethersulfone and polyimide , And the like.

The data pad 220 is disposed on one side of the substrate 210 and includes a data driver 221, and may be a plurality of data drivers. The data driver 221 may apply a data signal to the unit pixel P.

A plurality of data lines 225 drawn from the data pad 220 may be arranged in the data pad 220. The data line 225 may transmit the data signal applied from the data driver 221 to each unit pixel P. Here, the plurality of data lines 225 may be arranged diagonally with respect to one side of the substrate 210 on which the data pad 220 is disposed.

The scan pad 230 is disposed on the other side of the substrate 210 opposite to the data pad 220 and includes the scan driver 231, The scan driver 231 may apply a scan signal to the unit pixel P.

A plurality of scan lines 235 drawn from the scan pad 230 may be arranged on the scan pad 230. The scan line 235 may transmit a scan signal applied from the scan driver 231 to each unit pixel P. Here, the plurality of scan lines 235 may be arranged diagonally with respect to the other side of the substrate 210 on which the scan pads 230 are disposed.

Accordingly, the data pad 220 may be positioned on the upper side of the substrate 210, and the scan pad 230 may be located on the lower side thereof. A plurality of data lines 225 drawn out from the data pad 220 and a plurality of scan lines 235 drawn out from the scan pad 230 are arranged in an oblique direction and the data lines 225 and the scan lines 235 may intersect with each other to define a unit pixel P.

The unit pixel P defined by the intersection of the data line 225 and the scan line 235 may have a parallelogram shape in cross section parallel to the substrate 210. [ That is, since the data lines 225 arranged from one side of the substrate 210 and the scan lines 235 arranged from the other side of the substrate 210 are arranged in an oblique line and intersect with each other, a unit pixel P of a parallelogram shape Lt; / RTI >

FIG. 4 is a view showing a scan pad shown as area A in FIG.

Referring to FIG. 4, the scan pad 230 of the display device array substrate 200 according to an exemplary embodiment of the present invention may include a scan driver 231 and a scan pad line 232.

More specifically, a data line 225 drawn from the data pad and a scan line 235 drawn from the scan pad 230 are arranged on the substrate 210 in an intersecting manner. The data line 225 is short-circuited on the substrate 210. A scan pad line 232 connected to the scan line 235 may be located in the scan pad 230 and a scan driver 232 may be connected to the scan driver 231.

Therefore, a scan signal from the scan driver 231 is transmitted to the scan line 235 through the scan pad line 232, and the scan line 235 can transmit the scan signal to the unit pixel.

5 is a view showing the area B in Fig.

5, a display device array substrate 200 according to an exemplary embodiment of the present invention may include an auxiliary data pad 220a on one side of a substrate 210 on which a scan pad 230 is located.

More specifically, referring to the E region of FIG. 3, the data line 225 is drawn out obliquely from the data pad 220 located above the substrate 210. Here, the data lines 225 shown as D ₁ , D _2, ... Among the data lines 225 are drawn out from the data pads 220 located on the upper side of the substrate 210, but D _{1 '} , D _2' ... The data lines shown as D _{m '} are located on the side of the substrate 210 and are difficult to be drawn out from the data pad 220. Thus, the further the auxiliary data pad (220a) at the edge of the other side of the scan pad 230, the substrate 210 is located on the side of the substrate _{(210) D 1 ', D} 2' ... A data line 225 shown as D _{m '} may be connected.

Referring to FIG. 5 again, the scan driver 230 and the scan line 232 are connected to the scan line 235, as described in the description of the scan pad 230 described above. The auxiliary data pad 220a may be positioned adjacent to the scan pad 230. [

The auxiliary data pad 220a may include an auxiliary data driver 221a and an auxiliary data pad 222a. (D _{1 '} , D _2' ... D _{m '} ) 225 drawn from the auxiliary data pad 220a on the substrate 210 and the scan lines 235 ).

An auxiliary data pad line 222a connected to the data lines D _{1 '} , D _2', ..., D _{m '} 225 is located in the auxiliary data pad 220a, (Not shown).

The data signal from the auxiliary data driver 221a is transferred to the data lines D _{1 '} , D _2' ... D _{m '} 225 located on the side of the substrate 210 through the auxiliary data pad line 222a , And the data line 225 may transmit the data signal to the unit pixel.

As described above, in the present invention, the auxiliary data pad 220a is provided on the other side of the substrate 210 on which the scan pad 230 is located, and the auxiliary data pad 220a can not be drawn out from the data pad 220 located above the substrate 210 The data signal may be applied to the data lines D _{1 '} , D _2' ... D _{m '} 225 located on the side of the substrate 210.

FIG. 6 is a view of a data pad shown as region C in FIG.

Referring to FIG. 6, the data pad 220 of the display device array substrate 200 according to an exemplary embodiment of the present invention may include a data driver 221 and a data pad line 222.

More specifically, a scan line 235 drawn from the scan pad and a data line 225 drawn from the data pad 220 are arranged on the substrate 210 in an intersecting manner. The scan lines 235 are shorted on the substrate 210. The data pad 220 is connected to the data line 225 and the data pad 222 is connected to the data driver 221.

Accordingly, the data signal from the data driver 221 is transmitted to the data line 225 through the data pad line 222, and the data line 225 can transmit the data signal to the unit pixel.

FIG. 7 is a view showing the area D in FIG. 3; FIG.

Referring to FIG. 7, a display device array substrate 200 according to an exemplary embodiment of the present invention may include an auxiliary scan pad 230a on one side of a substrate 210 on which a data pad 220 is located.

More specifically, referring to the E region of FIG. 3, the scan line 235 is drawn out from the scan pad 230 located on the lower side of the substrate 210 in a diagonal direction. Here, the scan lines 235 shown as S ₁ , S _2, ..., S _{n '} of the scan lines 235 are drawn out from the scan pads 230 located below the substrate 210, but S _1' , S _{2 '} ... The scan lines S _{n '} are located on the side of the substrate 210 and are difficult to be drawn out from the scan pad 230. Thus, the data pad 220, a side S _{1 ',} S _2' located on the substrate 210 further includes a second scan pad (230a) at one side edge of the substrate 210 located ... A scan line 225 shown as S _{n '} can be connected.

7, the data pad 220 is connected to the data line 225 and the data driver 221 and the data pad line 222, as in the description of the data pad 220 described above. The auxiliary scan pad 230a may be positioned adjacent to the data pad 220. [

The auxiliary scan pad 230a may include an auxiliary scan driver 231a and an auxiliary scan line 232a. More specifically, scan lines S _{1 '} , S _2' ... S _{n '} 235 drawn from the auxiliary scan pad 230a on the substrate 210 and data lines 225 drawn out from the data pad 230 ).

An auxiliary scan pad line 232a connected to the scan lines S _{1 '} , S _2' ... S _{n '} 235 is located in the auxiliary scan pad 230a, (Not shown).

Therefore, a scan signal is transmitted from the auxiliary scan driver 231a to the scan lines S _{1 '} , S _2' ... S _{n '} 235 via the auxiliary scan pad line 232a, and the scan lines S _1' S _{2 '} ... S _n' ) 235 may transmit a scan signal to a unit pixel.

As described above, in the present invention, the auxiliary scan pad 230a is provided on one side of the substrate 210 on which the data pad 220 is located, and the auxiliary scan pad 230a can not be drawn out from the scan pad 230 located below the substrate 210 The scan signal may be applied to the scan lines S _{1 '} , S _2' ... S _{n '} 235 located on the side of the substrate 210.

8 is a diagram showing the unit pixel P shown in FIG.

8, a display device array substrate 200 according to an exemplary embodiment of the present invention includes a plurality of data lines 225 and a plurality of scan lines 235, P) can be defined.

The unit pixel P of the present invention includes a gate electrode 236 connected to the scan line 235, a semiconductor layer 240 positioned on the gate electrode 236, a semiconductor layer 240 connected to one side of the semiconductor layer 240, A thin film transistor (TFT) including a source electrode 245 connected to the gate electrode 225 and a drain electrode 246 connected to the other side of the semiconductor layer 240.

And a pixel electrode 250 connected to the drain electrode 246 of the thin film transistor TFT. In addition, the pixel electrode 250 may be positioned on the scan line 235 of the adjacent unit pixel P to have a storage on gate structure constituting the capacitor Cst. However, But may also be a storage on common structure.

A scan signal is applied to the gate electrode 236 from the scan line 235 and a data signal is applied to the source electrode 245 from the data line 225 to drive the thin film transistor TFT, As shown in FIG.

9 is a view showing an electrophoretic display device including a display device array substrate according to an embodiment of the present invention.

Referring to FIG. 9, an electrophoretic display device 300 including a display device array substrate according to an embodiment of the present invention includes a display device array substrate 360 and an upper array substrate 180.

The display device array substrate 360 includes a scan line (not shown) and a data line (not shown) formed on the substrate 342 so as to cross each other with a gate insulating film 344 sandwiched therebetween, a thin film transistor And a pixel electrode 318 formed on the unit pixel provided with the cross structure.

The substrate 342 can be made of a plastic with a flexible nature and can be made of, for example, polyacrylate, polyethylene ether phthalate, polyethylene naphthalate, polycarbonate, polyarylate, polyetherimide, polyether sulfone and polyimide Or a combination thereof.

The thin film transistor TFT includes a gate electrode 308 to which a scan signal is supplied, a source electrode 310 connected to the data line, a drain electrode 312 connected to the pixel electrode 318, a gate electrode 308, And a semiconductor layer 314 that overlaps the source electrode 310 and the drain electrode 312 and forms a channel between the source electrode 310 and the drain electrode 312.

The semiconductor layer 314 is formed to overlap with the source electrode 310 and the drain electrode 312 and further includes a channel portion between the source electrode 310 and the drain electrode 312. On the semiconductor layer 314, an ohmic contact layer 348 for ohmic contact with the source electrode 310 and the drain electrode 312 is further formed. Here, the semiconductor layer 314 and the ohmic contact layer 348 are generally referred to as semiconductor patterns 345.

The pixel electrode 318 is in contact with the drain electrode 312 through the via hole 317 which exposes the drain electrode 312 through the passivation film 350 protecting the TFT.

The upper array substrate 380 includes a common electrode 384 formed on the upper substrate 382 and an electrophoretic film 390 located on the common electrode 384. [

The upper substrate 382 may be made of a flexible plastic like the substrate 342 described above.

The electrophoretic film 390 is composed of a capsule 392 containing charge pigment particles and upper and lower protective layers 396 and 394 located above and below the capsule 392, And a color filter 338 between the lower protective layer 394 and the lower protective layer 394.

Capsule 392 includes black dye particles 392a responsive to a positive voltage, white dye particles 392b responsive to a negative voltage, and solvent 392c.

The upper and lower protective layers 396 and 394 serve to block the flow of the spherical capsule 392 and to protect the capsule 392. The upper and lower protective layers 396 and 394 may be made of flexible plastic, easily bendable base film, or metal having flexibility.

The color filter 338 includes red, green and blue color filters, and is formed by a thermal imaging method or the like.

The electrophoretic display device having such a configuration can be provided with a color filter 338 to realize color. In addition, flexibility can be maintained by using an upper substrate 382 having flexibility, which is not an upper glass substrate in a liquid crystal display panel.

Then, the upper array substrate 380 and the display device array substrate 360 are bonded together by the laminating process using the adhesive 386.

10 is a view illustrating a liquid crystal display device including a display device array substrate according to another embodiment of the present invention.

10, a liquid crystal display device 400 including a display device array substrate according to another embodiment of the present invention includes a display device array substrate 460, a color filter substrate 480, and a liquid crystal layer (490).

The display device array substrate 460 includes scan lines (not shown) and data lines (not shown) formed on the substrate 442 so as to cross each other with a gate insulating film 444 interposed therebetween, and thin film transistors And a pixel electrode 418 formed in a unit pixel provided with the cross structure.

The substrate 442 may be made of plastic with a flexible nature and may be formed of a material selected from the group consisting of polyacrylate, polyethylene ether phthalate, polyethylene naphthalate, polycarbonate, polyarylate, polyetherimide, polyether sulfone and polyimide And the like.

The thin film transistor TFT includes a gate electrode 408 to which a scan signal is supplied, a source electrode 410 connected to the data line, a drain electrode 412 connected to the pixel electrode 418, a gate electrode 408, And a semiconductor layer 414 overlapping the source electrode 410 and the drain electrode 412 and forming a channel between the source electrode 410 and the drain electrode 412.

The semiconductor layer 414 is formed to overlap the source electrode 410 and the drain electrode 412 and further includes a channel portion between the source electrode 410 and the drain electrode 412. On the semiconductor layer 414, an ohmic contact layer 448 for ohmic contact with the source electrode 410 and the drain electrode 412 is further formed. Here, the semiconductor layer 414 and the ohmic contact layer 448 are generally referred to as a semiconductor pattern 445.

The pixel electrode 418 is in contact with the drain electrode 412 through the via hole 417 which exposes the drain electrode 412 through the passivation film 450 protecting the thin film transistor TFT.

The color filter substrate 480 includes an upper substrate 482 a black matrix 484, a color filter 486 located between the black matrices 484, an overcoat layer 488 covering the black matrix 484 and the color filter 486 And a common electrode 489 located on the overcoat layer.

The upper substrate 482 may be made of a flexible plastic in the same manner as the substrate 442 described above.

The black matrix 484 may be made of an opaque organic material or an opaque metal to prevent light from being transmitted through an area where the liquid crystal layer 490 can not be controlled.

The color filter 486 may be composed of red (R), green (G), and blue (B) color filters 486 to implement color, and is formed by a thermal image method or the like.

The overcoat layer 488 may be formed of a transparent organic material for protecting the color filter 486 and for good step coverage of the common electrode 489. The common electrode 489 is formed of a transparent metal such as indium tin oxide (ITO), indium zinc oxide (IZO), or the like, and applies a common voltage to the liquid crystal layer 490.

The liquid crystal layer 490 may be positioned between the display device array substrate 460 and the color filter substrate 480 as described above.

11 is a view illustrating a display device according to embodiments of the present invention.

11, a display device 500 according to an embodiment of the present invention includes a display device array substrate 510 having a cylindrical shape, a data pad 520 disposed on an upper surface of the display device array substrate 510, The scan pad 530 may be positioned at the lower end of the scan electrode 530. [ Unlike the conventional display device, the display device 500 having the above-described structure is configured such that the data pad 520 and the scan pad 530 are positioned at the upper and lower ends of the substrate 510, There is an advantage.

12 is a table showing data for driving a display device array substrate manufactured according to an embodiment of the present invention.

Referring to FIG. 12, the display device array substrate manufactured according to the embodiment of the present invention exhibits an aperture ratio of 96.1% of a unit pixel, which is similar to that of a conventional display device when driven. Therefore, it can be seen that the display device array substrate manufactured according to the embodiment of the present invention is applicable to a display device.

As described above, in the display device array substrate according to the embodiment of the present invention, the data pad and the scan pad are disposed on the upper and lower sides of the substrate, and the data lines and the scan lines are crossed obliquely to form unit pixels of a parallelogram shape , There is an advantage that even if a cylindrical flexible display device is manufactured, the image can be implemented on the front without interruption.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that the invention may be practiced. It is to be understood, therefore, that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. In addition, the scope of the present invention is indicated by the following claims rather than the detailed description. Also, all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

1 and 2 show a conventional electrophoretic display device.

3 illustrates a display device array substrate in accordance with an embodiment of the present invention.

4 shows the area A of Fig. 3; Fig.

5 is a view showing a region B in Fig. 3; Fig.

Fig. 6 is a view showing a region C in Fig. 3; Fig.

FIG. 7 is a view showing a region D in FIG. 3; FIG.

8 is a view showing a unit pixel (P) region in Fig.

9 illustrates an electrophoretic display device including a display device array substrate according to an embodiment of the present invention.

10 illustrates a liquid crystal display device including a display device array substrate according to an embodiment of the present invention.

11 illustrates a display device including a display device array substrate according to an embodiment of the present invention.

Figure 12 is a table of data driven display array substrate fabricated in accordance with an embodiment of the present invention.

Claims (15)

Board; A data pad located on one side of the substrate; A scan pad facing the data pad and located on the other side of the substrate; And A plurality of data lines drawn in an oblique direction from the data pad and a plurality of scan lines drawn obliquely from the scan pad, Wherein the data line and the scan line cross each other to define a plurality of unit pixels, And at least one of an auxiliary data pad at an edge of the substrate on which the scan pad is located and an auxiliary scan pad at an edge of the substrate where the data pad is located. The method according to claim 1, Wherein the data pad includes a data driver and a data pad line. delete The method according to claim 1, Wherein the auxiliary data pad comprises an auxiliary data driver and an auxiliary data pad line. The method according to claim 1, Wherein the scan pad includes a scan driver and a scan pad line. delete The method according to claim 1, Wherein the auxiliary scan pad comprises an auxiliary scan driver and an auxiliary scan pad line. The method according to claim 1, Wherein the unit pixel has a parallelogram shape in cross section parallel to the substrate. The method according to claim 1, Wherein the unit pixel includes a gate electrode, a semiconductor layer, a source electrode, a drain electrode, and a pixel electrode. 10. The method of claim 9, And the pixel electrode is positioned on the scan line to constitute a capacitor. The method according to claim 1, Wherein the substrate is made of plastic. The method according to claim 1, Further comprising an electrophoretic film on the substrate, the electrophoretic film comprising a capsule with charged dye particles. The method according to claim 1, Further comprising: a color filter substrate on the substrate, the color filter substrate including a liquid crystal layer and a color filter. The method according to claim 1, Wherein the substrate has a cylindrical shape. delete

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