KR20140081668A - Display divice - Google Patents

Abstract

An embodiment according to the present invention prevents current which flows form a power supply part to a pixel region from becoming overcurrent by introducing a stepped shape or an inclined shape with a preset angle at a connection point when connecting the line of the power supply part to the line of the pixel region.

Description

DISPLAY DEVICE {DISPLAY DIVICE}

The present invention relates to a display device.

2. Description of the Related Art Recently, various flat panel display devices capable of reducing weight and volume, which are disadvantages of cathode ray tubes (CRTs), have been developed. Such a flat panel display device includes a liquid crystal display (LCD), a field emission display (FED), a plasma display panel (PDP) And a light emitting device (Electroluminescence Device).

PDP has attracted attention as a display device that is most advantageous for large screen size but small size because of its simple structure and manufacturing process, but it has disadvantage of low luminous efficiency, low luminance and high power consumption. Thin Film Transistor LCD (TFT LCD) is the most widely used flat panel display device, but has a narrow viewing angle and low response speed. The electroluminescence device is divided into an inorganic light emitting diode display device and an organic light emitting diode display device according to the material of the light emitting layer. Of these organic light emitting diode display devices, self light emitting devices are self light emitting devices, There is a big advantage.

On the other hand, display devices include a panel for displaying a screen, and as the display device develops, the power wiring for operating each configuration inside the display device becomes complicated. Particularly, each pixel region in the display device is a very small region. In order to connect the power wiring to such a region, the wiring size is inevitably reduced. Therefore, the width of the wiring can be very small when the wiring of the power source started from the power supply portion supplying the power reaches each configuration. At this time, the current flowing through the wiring may be caused by an abrupt increase of the resistance, which may cause an overcurrent that the current collects at the point where the resistance increases, and the wiring that can not withstand this overcurrent is accumulated. If the wiring is broken, the display panel may not operate normally, which may result in poor image quality.

In the embodiment of the present invention, when a wiring from a power supply unit and a wiring from the pixel unit are connected to each other, a wiring having a shape having a predetermined angle or a stepped or curved shape is introduced into the connection point, Is prevented from being turned off.

A display device according to an embodiment of the present invention includes: a pixel portion; And a power supply wiring connected to the pixel portion, wherein the power supply wiring includes a first power supply wiring, a second power supply wiring having a width smaller than the first power supply wiring and connected to the pixel portion, And the wiring connection portion is narrowed in width from the first power supply wiring toward the second power supply wiring.

The display device according to the embodiment of the present invention is characterized in that the first power supply wiring, the second power supply wiring, and the wiring connection portion are integrally formed.

In the display device according to the embodiment of the present invention, the first power supply wiring, the second power supply wiring, and the wiring connection part are made of the same material.

The display device according to the embodiment of the present invention is narrowed in width so that the sides thereof have a curved shape from the first power supply wiring to the wiring connecting portion and the second power supply wiring.

The display device according to the embodiment of the present invention has the edge of the area where the first power supply wiring and the wiring connection part meet and the edge of the area where the second power supply wiring and the wiring connection part meet are curved.

A display device according to an embodiment of the present invention includes: a pixel portion; And a power supply wiring connected to the pixel portion, wherein the power supply wiring includes a first power supply wiring, a second power supply wiring having a width smaller than the first power supply wiring and connected to the pixel portion, And the wiring connecting portion has a stepped shape.

In the display device according to the embodiment of the present invention, the wiring connecting portion is narrowed in width from the first power supply wiring toward the second power supply wiring.

The display device according to the embodiment of the present invention is characterized in that the first power supply wiring, the second power supply wiring, and the wiring connection portion are integrally formed.

In the display device according to the embodiment of the present invention, the first power supply wiring, the second power supply wiring, and the wiring connection part are made of the same material.

The display device according to the embodiment of the present invention is characterized in that the first and second power supply wiring and the wiring connection portion are formed in one side region of the panel and wiring having a shape symmetrical to the first and second power supply wiring and the wiring connection portion is formed on the other side region of the panel Device.

The embodiment introduces a shape or a step shape having a predetermined angle at the connection point when the wiring from the power supply unit and the wiring from the pixel unit are connected to block the current flowing from the power supply unit to the pixel unit from becoming an overcurrent, It is possible to prevent deterioration of image quality of the panel due to defects.

1 is a plan view of a power wiring portion of a panel according to a first embodiment of the present invention;
2 is an enlarged view of a wiring connection region in a power wiring portion of a panel according to the first embodiment of the present invention;
3 is a plan view of a power wiring portion of a panel according to a second embodiment of the present invention;
4 is a view of a wiring connection region in a power wiring portion of a panel according to a second embodiment of the present invention;
5 is a view of a wiring connection region in a power wiring portion of a panel according to a second embodiment of the present invention.
6 is a plan view of a power wiring portion of a panel according to a third embodiment of the present invention;
7 is a plan view of a power wiring portion of a panel according to a fourth embodiment of the present invention;
8 and 9 are plan views of a power wiring portion of a panel according to a fifth embodiment of the present invention.
10 is a plan view showing a wiring formed on a panel.

Hereinafter, the display device according to the present invention will be described in detail with reference to the drawings. The following embodiments are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the embodiments described below, but may be embodied in other forms. In the drawings, the size and thickness of an apparatus may be exaggerated for convenience. Like reference numerals designate like elements throughout the specification.

1 is a plan view of a power wiring portion of a panel in a display device according to a first embodiment of the present invention.

1, the power supply wiring portion of the panel according to the first embodiment of the present invention includes a power supply portion 4, a first power supply wiring 1, a second power supply wiring 2, and a pixel portion 5 ).

The power supply unit 4 may supply power necessary for driving the pixel unit 5 through the first and second power supply lines 1 and 2.

The pixel portion 5 has a different structure depending on the type of the display panel to be used.

Typically, in the case of a liquid crystal display device, a pixel region is determined at a crossing point of a gate line and a data line in a pixel portion, and a data signal is applied to each pixel by a switching operation of a thin film transistor according to the magnitude of a gate voltage on the gate line, So that a screen is displayed on the display unit 5.

In this case, the liquid crystal display device includes a gate driver for supplying a gate signal to the gate line, a data driver for supplying a data signal to the data line, and a timing controller for controlling the gate driver and the data driver. And a power source for driving the gate, the data driver, and the timing controller. At this time, each configuration can be operated through the power supplied from the power supply unit 4 of the present invention. Accordingly, it is necessary to interconnect the power supply unit 4 with the gate, the data driver, and the timing controller. In this case, the first and second power supply lines are used to connect the respective components, Drivers, timing controllers, and other components.

On the other hand, in recent organic light emitting diode display devices, self-emitting self-luminous devices have advantages of high response speed, high luminous efficiency, high luminance and wide viewing angle. However, in the organic light emitting diode display device, in addition to the transistor for switching, a driving transistor for driving each pixel is required in the pixel portion 5 as compared with the case of the above-described liquid crystal display device. Therefore, a relatively large amount of wiring is required to display a picture on the pixel unit 5 included in the organic light emitting diode display device. Accordingly, in order to supply power to the inside of the pixel unit 5 and the various elements in each pixel in the power supply unit 4 having a relatively large size, the first and second power supply lines 1 and 2 The power supply unit 4 and various elements in the pixel unit 5 may be connected to each other to supply power.

The first power supply wiring 1 may be a plurality of wirings connected from the power supply unit 4. [

The first power source line (1) may be connected to a plurality of second power source lines (2) connected to the pixel portion (5).

The pixel portion 5 includes a plurality of pixel regions and is required to supply power to each of the pixel regions. Therefore, in order to supply power to each of the pixel regions, the width of the second power source line 2 may be smaller than the width of the first power source line 1.

The wiring connection region 3 may be connected to the start end of the second power supply line 2 while being inclined at an angle from the end of the first power supply line 1.

When the current i supplied from the power supply unit 4 is supplied from the first power supply line 1 to the pixel unit 5 through the second power supply line 2, When the wiring connection region 3 is connected from the first power supply line 1 to the second power supply line 2 although the width of the first power supply line 1 is larger than the width of the second power supply line 2, So that the difference between the width of the first power supply line 1 and the width of the second power supply line 2 is gradually reduced so that the first power supply line 1 and the second power supply line 2 2 Power line (2) can be connected.

Thus, it is possible to prevent the occurrence of an overcurrent at the connection point between the first power supply wiring line (1) and the second power supply wiring line (2), and to prevent the wiring breakage due to the occurrence of the overcurrent.

On the other hand, the first power supply wiring 1 and the second power supply wiring 2 may be wirings of the same material.

When the first and second power supply lines (1, 2) of the same material are used, it is possible to prevent the occurrence of an overcurrent due to a sudden change in resistance at a connection point of a power supply line having different currents (i).

The first and second power supply lines may be made of metal, but the present invention is not limited thereto. The first power supply wiring 1, the second power supply wiring 2 and the wiring connection portion 3 may be formed of the same material and integrated.

FIG. 2 is an enlarged view of a wiring connection region in a power wiring portion of a panel in a display device according to the first embodiment of the present invention. FIG.

Referring to FIG. 2, the wiring connection region 3 is a region connecting the first power supply wiring 1 and the second power supply wiring 2.

Is a predetermined angle (?) Made by the wiring connection region (3) from a vertical line perpendicular to the first power supply wiring line (1) at a point where the first power supply wiring line (1) meets the wiring connection region .

The angle? May vary depending on the lateral width and the vertical width of the first power supply wiring 1 and the second power supply wiring 2.

When the lateral width and the vertical width of the second power supply line (1,2) are narrow, the current (i) passing through the first power supply line (1) passes through the second power supply line (2) An overcurrent may be generated in the wiring connection region 3 so that the angle of the wiring connection region 3 increases and the current flowing from the first power supply wiring 1 to the second power supply wiring 2 the degree of disturbance of the flow of (i) can be gradually increased.

As a result, it is possible to prevent an overcurrent from being generated in the region of the power wiring connection (3), thereby preventing breakage of the wiring.

3 is a plan view of a power wiring portion of a panel in a display device according to a second embodiment of the present invention.

In the description of the second embodiment, the same reference numerals are assigned to the same functions and the same features as those of the first embodiment, and a detailed description thereof will be omitted.

3, the display device according to the second embodiment of the present invention may include a power supply unit 4, a pixel unit 5, a first power supply line 1, and a second power supply line 2 .

The power supply unit 4 may supply power for driving the pixel unit 5.

The first power supply line 1 and the second power supply line 2 may be connected to each other to connect the power supply unit 4 and the pixel unit 5.

The width of the second power supply line (2) may be smaller than the width of the first power supply line (1).

In this case, the wiring connection region 3 in which the first power supply wiring 1 and the second power supply wiring 2 are connected can be configured in a stepwise manner.

That is, one end of the second power supply line 2 may be connected starting from one end of the first power supply line 1 and narrowing in a stepwise manner to the left and right.

When the width of the first power supply line 1 is larger than the width of the second power supply line, the first power supply line 1 is connected to one end of the second power supply line 2 It is possible to prevent the overcurrent from flowing at the inflow point and to prevent the wiring damage due to the overcurrent. .

On the other hand, the first and second power supply lines 1 and 2 may be made of the same material.

When the first and second power supply lines (1, 2) become the same wiring, the current (i) passing through the first and second power supply lines (1, 2) Thereby reducing the phenomenon of breakage of the wiring.

The first and second power supply lines 1 and 2 may be made of metal, but the present invention is not limited thereto.

4 is a view showing a wiring connection region in a power wiring portion of a panel in a display device according to a second embodiment of the present invention.

Referring to FIG. 4, the wiring connection region 3 may have a stepped shape.

It is possible to gradually increase the resistance of the current i passing from the first power supply line 1 to the second power supply line 2 by configuring the wiring connection region 3 in a stepwise manner. However, the shape of the wiring connection region 3 may vary depending on the left and right widths and the vertical widths of the first power supply wiring 1 and the second power supply wiring 2.

For example, when the lateral width and the vertical width of the second power supply line 2 are relatively smaller than the first power supply line 1, the lengths of x and y are shortened on the wiring connection region 3, So that a large number of stepped shapes can be displayed on the region 3.

Thereby gradually interrupting the flow of the current (i) in the wiring connection region (3) when the current (i) from the first power supply wiring (1) enters the second power supply wiring (2) An overcurrent can be cut off on the connection region 3. [

5 is a view showing a wiring connection region in a power wiring portion of a panel in a display device according to a second embodiment of the present invention.

5, the angle (?) Formed by the vertical line perpendicular to the first power supply line (1) and the wiring connection area (3) in the wiring connection area (3) It is possible to increase the degree of disturbance of the flow of the current (i) as a minimum unit when the current (i) from the first power source line (1) flows into the second power source line (2).

In the case where the degree to which the flow of the current i is interrupted in the wiring connection region 3 can be suddenly increased considering the lateral width, the vertical width, the length and the material of the second power supply wiring 2, It is possible to reduce the length of x and y in the connection region 3 so that a large number of steps are displayed on the wiring connection region 3 and at the same time the length y is larger than x to increase the angle .

In this case, it is possible to prevent an overcurrent phenomenon in which the current (i) suddenly converges in the wiring connection region (3) with the increment of the resistance representing the degree of disturbance of the current (i) (i) can flow stably.

6 is a plan view of a power wiring portion of a panel in a display device according to a third embodiment of the present invention.

In the description of the third embodiment, the same reference numerals are assigned to the same functions and the same features as those of the first and second embodiments, and a detailed description thereof will be omitted.

6, the power wiring portion of the panel according to the third embodiment of the present invention includes a power supply portion 4, a pixel portion 5, a first power wiring 1, a second power wiring 2, (6).

The power supply unit 4 may supply power for operating the transistors included in the pixel unit 5.

The wiring connection part 6 can connect the first power supply wiring 1 and the second power supply wiring 2.

As a connection method, a contact hole may be formed and connected, but the present invention is not limited thereto.

On the other hand, the widths of the first power supply wiring 1 and the second power supply wiring 2 may be different from each other.

Particularly, the second power supply line 2 may have a width smaller than that of the first power supply line 1, so that the second power supply line 2 passes through the first power supply line 1 and the second power supply line 2 An overcurrent may be generated at a point where the first power supply end 1 and the second power supply wiring 2 meet with an abrupt increase in resistance. Therefore, the width of the wiring connection part 6 can be narrowed from the first power supply wiring 1 to the second power supply wiring 2.

In this case, the current (i) passing through the first and second power supply lines (1, 2) is not suddenly increased in wiring resistance but gradually increased due to an increase in wiring resistance, An overcurrent can be prevented from being generated at a point where the wiring 2 is connected.

The first and second power supply lines (1, 2) and the wiring connection portion (6) may be made of the same material, but the present invention is not limited thereto.

When the first and second power supply lines (1, 2) and the wiring connection portion (6) are made of the same material, the current (i) in the wiring connection portion (6) So that the overcurrent is reduced.

The wiring connection part 6 may be made of metal, but is not limited thereto. The first power source wiring 1, the second power source wiring 2, and the wiring connection portion 6 may be formed of the same material and integrated.

7 is a plan view of a power wiring portion of a panel in a display device according to a fourth embodiment of the present invention.

In the description of the fourth embodiment, the same function and the same shape as those of the first to third embodiments are denoted by the same reference numerals, and detailed description is omitted.

7, the power wiring portion of the panel in the display device according to the fourth embodiment of the present invention includes a power supply portion 4, a pixel portion 5, a first power supply wiring 1, a second power supply wiring 2 And a wiring connecting portion 6. [0035]

The power supply unit 4 may supply power to the pixel unit 5 via the first and second power supply lines 1 and 2.

The second power supply line (2) may be smaller than the width of the first power supply line (1).

The wiring connection portion 6 connecting the first power supply wiring 1 and the second power supply wiring 2 is formed in a stepped shape in which the left and right steps in the direction of the second power supply wiring 2 from the first power supply wiring 1 The shape can be narrowed.

As a result, the current i is instantaneously increased as the current i supplied from the power supply unit 4 passes through the first power supply line 1 and reaches the second power supply line 2, . However, since the power supply wiring portion 6 is formed in a stepwise manner to increase the resistance gradually, the resistance that the current i experiences when passing through the first power supply wiring 1 and passing through the second power supply wiring 2 So that it is possible to prevent a wire breakage phenomenon caused by an abrupt increase in current (i).

That is, the resistance value indicating the degree of disturbance of the flow of the current i, is gradually increased to gradually increase the degree of disturbance of the flow of the current i so that the first power supply line 1 and the second power supply line (I) of the wiring connecting portion 6, that is, the contact of the wiring connecting portion 2, that is, the current (i)

8 and 9 are plan views of a power wiring portion of a panel in a display device according to a fifth embodiment of the present invention.

In the description of the fifth embodiment, the same reference numerals are assigned to the same functions and the same features as those of the first to fourth embodiments, and a detailed description thereof will be omitted.

8, in the display device according to the fifth embodiment of the present invention, the power wiring portion of the panel may include a first power supply wiring 1, a second power supply wiring 2, and a connection wiring 7 .

When the wiring widths of the first power supply wiring 1 and the second power supply wiring 2 are compared with each other, the width of the second power supply wiring 2 may be smaller than the width of the first power supply wiring 1.

The connection wiring 7 connecting the first power supply wiring 1 and the second power supply wiring 2 has a width gradually increasing from the first power supply wiring 1 toward the second power supply wiring 2 Lt; / RTI >

That is, the connection wiring 7 gradually extends from the first power supply line 1 to a width corresponding to the width of the second power supply line 2, and the second power supply line 1 Lt; / RTI >

More specifically, the overall shape of the first and second power supply lines 1 and 2 and the wiring connection region 3 can be changed from the first power supply line 1 to the wiring connection portion 3 and the second power supply line 2 ), The width of their sides can be narrowed to have a curved shape.

The first and second power supply lines 1 and 2 and the connection line 7 may be integrally formed by a single process.

9, the edge region A of the region where the first power supply wiring line 1 and the connection wiring line 7 meet may have a curved shape, and the second power supply wiring 2 and the connection wiring 7 may have a curved shape. And the edge region B of the region in which this region is located can also have a curved shape.

The widths of the first and second power supply lines 1 and 2 can be adjusted so that the A and B regions have a curved shape.

Specifically, the width of the first power source wiring line 1 may be gradually reduced from a region where the first power source wiring line 1 and the connection wiring line 7 meet.

Likewise, the width of the second power supply line 2 gradually decreases from the area where the second power supply line 2 is contacted with the connection wiring 7, and the width thereof can be kept constant.

As described above, by forming a curved shape from the first power source wiring 1 to the connection wiring 7 and the second power source wiring 2 without angular regions, it is possible to prevent the current deviating phenomenon due to the occurrence of the overcurrent Can be maximized.

In addition, it is possible to enhance the effect of preventing wiring damage caused by static electricity, which may occur in the angular region.

10 is a plan view showing a wiring formed on the panel.

10, a first wiring connection area (first wiring connection area) 1 for connecting the first and second power supply wiring lines 1 and 2 and the first and second power supply wiring lines 1 and 2 to each other is formed on an upper area of the panel 20 3, a power supply unit 4 for supplying a signal to the first power supply line 1, and signal lines in a pixel unit 5 for receiving a signal transmitted to the second power supply line 2, A first wiring 7 connected to the circuit board 10 and a second wiring 7 connected to the first wiring 7 and the second wiring 7 are formed on the lower region of the panel 20 in symmetry with the pad portion 11, A second wiring 8 connected through the region 9 and a pad portion 11 connected to the second wiring 8.

The first and second wirings 7 and 8 may be data and gate signal wirings or may have power supply wirings having the same role as the first and second power supply wirings 1 and 2 formed in the upper region of the panel 20 .

The first wiring 7, the second wiring 8, and the second wiring connection region 9 may be made of the same material.

The circuit board 10 can provide a suitable signal according to the type of the first and second wires 7 and 8. The pad portion 11 may connect the first and second wirings 7 and 8 to various signal wirings on the pixel region 5. [

As described above, the wirings on one side region and the other side region of the panel 20 can be designed symmetrically with each other. Concretely, the wirings on the upper region and the lower region of the panel 20 can be symmetrically designed.

Even when the first and second wirings 7 and 8 formed in the lower region of the panel 20 are wires independent of overcurrent generation, when forming the first and second power supply wirings 1 and 2, By forming the first and second wirings 7 and 8 together with the first and second power supply wirings 1 and 2 in a symmetrical shape, the process can be simplified.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1. First power supply wiring
2. Second power supply wiring
3. Wiring connection area, first wiring connection area
4. Power supply
5. The pixel portion
6. Wiring connection
7. First Wiring
8. Second Wiring
9. Second wiring connection area
10. Circuit board
11. Pad portion

Claims (10)

A pixel portion; And
And a power supply wiring connected to the pixel portion,
Wherein the power supply wiring includes a first power supply wiring, a second power supply wiring having a width smaller than the first power supply wiring and connected to the pixel portion, and a wiring connecting portion connecting the first power supply wiring and the second power supply wiring to each other,
And the wiring connecting portion is narrowed in width from the first power supply wiring toward the second power supply wiring. The method according to claim 1,
Wherein the first power supply wiring, the second power supply wiring, and the wiring connection portion are integrally formed. The method according to claim 1,
Wherein the first power supply wiring, the second power supply wiring, and the wiring connection portion are made of the same material. The method according to claim 1,
Wherein a width of each of the first power supply wiring and the second power supply wiring is narrowed so that their side faces have a curved shape from the first power supply wiring to the wiring connecting portion and the second power supply wiring. The method according to claim 1,
Wherein edge portions of the region where the first power supply wiring and the wiring connection portion meet and edges of the region where the second power supply wiring and the wiring connection portion meet are curved. A pixel portion; And
And a power supply wiring connected to the pixel portion,
Wherein the power supply wiring includes a first power supply wiring, a second power supply wiring having a width smaller than the first power supply wiring and connected to the pixel portion, and a wiring connecting portion connecting the first power supply wiring and the second power supply wiring to each other,
Wherein the wiring connecting portion has a stepped shape. The method according to claim 6,
And the wiring connecting portion is narrowed in width from the first power supply wiring toward the second power supply wiring. The method according to claim 6,
Wherein the first power supply wiring, the second power supply wiring, and the wiring connection portion are integrally formed. The method according to claim 6,
Wherein the first power supply wiring, the second power supply wiring, and the wiring connection portion are made of the same material. The method according to claim 1 or 6,
Wherein the first and second power supply wiring and the wiring connection portion are formed in one side region of the panel and the wiring having a shape symmetrical to the first and second power supply wiring is formed in the other side region of the panel.

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