CN106597766B - display device - Google Patents

Abstract

The present invention discloses a display device, comprising: a substrate having adjacent display areas and peripheral areas; a plurality of sub-pixels disposed in the display area; a plurality of data lines electrically connecting the plurality of sub-pixels; a first electronic component group and a second electronic component group disposed in the peripheral area, electrically connecting the plurality of data lines, and comprising a plurality of first electronic components and a plurality of second electronic components. The plurality of adjacent first electronic components have a first spacing, and the plurality of adjacent second electronic components have a second spacing, and the first spacing is not equal to the second spacing.

Description

display device

technical field

The present invention relates to a display device, in particular to a display device with optimized peripheral electronic components and layout of the display device.

Background technique

Display devices, such as liquid crystal display devices, organic light emitting diode display devices, electroluminescence display devices, field emission display devices, etc., have been widely used in various electronic devices in recent years due to their advantages of lightness, thinness, and small size. The pixel area of a display device is usually rectangular, but in order to adapt to the electronic equipment it is matched with, the display area also has a non-rectangular design.

In order to prevent electrostatic discharge (ESD) from destroying the pixel unit and other circuits of the display device, electronic components, such as electrostatic protection components, are usually added to the peripheral area of the display device to enhance the anti-static discharge capability of the display device. Since there are various wirings in the peripheral area of the display device, the layout and functions of the multiple electronic components will be affected.

Contents of the invention

The object of the present invention is to provide a display device in which peripheral electronic components and layout of the display device are optimized, so as to solve the above problems.

According to a feature of the display device of the present invention, it includes: a substrate having an adjacent display area and a peripheral area; a plurality of sub-pixels arranged in the display area; a plurality of data lines electrically connected to the plurality of sub-pixels; A first group of electronic components, disposed on the peripheral area and electrically connected to the plurality of data lines, and including a plurality of first electronic components; and a second group of electronic components, disposed on the peripheral area and electrically connected to Part of the plurality of data lines, and includes a plurality of second electronic components. There is a first distance between the plurality of adjacent first electronic components, and there is a second distance between the plurality of adjacent second electronic components, and the first distance is not equal to the second distance.

According to another feature of the display device of the present invention, the second pitch is smaller than the first pitch.

According to another feature of the display device of the present invention, each of the plurality of electronic components is also electrically connected to the corresponding plurality of lines through a connecting portion; and the display device further includes a common line connected to the plurality of electronic components ; Wherein, the common line has a first bending portion, the first group and the second group are connected through the first bending portion; and, wherein each of the electronic components in the second group The corresponding length of the connecting portion is proportional to the distance between the connecting portion and the first bending portion.

According to another feature of the display device of the present invention, wherein the plurality of first electronic components and the plurality of second electronic components are arranged in a row along a first direction, and the plurality of first electronic components along the first direction The extension lines and the extension lines of the plurality of second electronic components along the first direction do not overlap in the first direction.

According to another feature of the display device of the present invention, the substrate further has a metal layer and a wiring layer; wherein, the metal layer has a first boundary, and the wiring layer has a second boundary; in the first direction , there is a third distance and a fourth distance between the first boundary and the second boundary, and the third distance is not equal to the fourth distance. In addition, the metal layer is disposed between the wiring layer and the peripheral area.

According to another feature of the display device of the present invention, the display area may be non-rectangular, including a rectangular area and a non-rectangular area, and the number of sub-pixels in the plurality of sub-pixel rows arranged in the rectangular area is greater than that in the non-rectangular area. The number of sub-pixels of the plurality of sub-pixel rows of the region. Also, the second group connects the plurality of lines corresponding to the rectangular area, the first group connects the plurality of lines corresponding to the non-rectangular area, and the second distance is smaller than the first distance.

According to still another feature of the display device of the present invention, the plurality of electronic components are electrostatic discharge protection components; furthermore, the electrostatic discharge protection components include two antiparallel diodes.

Description of drawings

FIG. 1 is a schematic diagram of a circuit structure of a display device according to an embodiment of the present invention;

FIG. 2 is a partial circuit diagram corresponding to the display device 1 of FIG. 1;

FIG. 3 is a partially enlarged view of the area near the first electronic component group 17 and the second electronic component group 18 of FIG. 2;

4A and FIG. 4B are partial enlarged views of the circuit near the second electronic component group 18 of FIG. 3;

FIG. 5 is a partial enlarged view of the circuit near the second electronic component group 18 in FIG. 3 .

Symbol Description

1～display device

10～Substrate

11～display area

11A～1st District

11B～Second District

12～surrounding area

13～scanning line

13'～scanning cable

14～data line

14a～the first data line

14b～second data line

15～Gate drive unit

16～Data drive unit

17～The first electronic component group

18～Second electronic component group

18a～first type second electronic component group

18b～Second type second electronic component group

21～Electronic components

21a～the first electronic component

21b～second electronic component

23～common line

23 ~ the first bending part

25～Wiring layer

27～metal layer

SP～subpixel

d1～the first distance

d2～second distance

d3～third distance

d4～fourth distance

a, b, c, d ~ bending line

B1～first boundary

B2～Second boundary

path1-path6～electrostatic discharge current path

LT～connection part

Xc～Capacitance

Detailed ways

FIG. 1 shows a schematic diagram of the circuit architecture of a non-rectangular display device 1 . The non-rectangular display device 1 of FIG. 1 includes: a substrate 10, a non-rectangular display area 11 and a peripheral area 12 arranged on the substrate 10, the non-rectangular display area 11 has a plurality of sub-pixels SP (sub-pixel ). The edge shape of the substrate 10 may be irregular shapes such as rectangle, circle, ellipse, square or other non-rectangular polygons, etc., and may have an edge chamfer design. The substrate 10 can be made of glass, silicon, plastic or other polymer materials. The non-rectangular display area 11 has a first area 11A and a second area 11B. The first area 11A is designed like the display area of a general display device, and the sub-pixels SP in the area are arranged in a rectangular matrix. For example, the first area 11A is a rectangular sub-pixel array composed of M columns and N rows of sub-pixels SP. The edges are in the form of orthogonal straight lines extending along the X and Y directions, where M and N are positive integers. The second region 11B conforms to the non-rectangular design, so part of the sub-pixels SP on the edge is deleted, so the connection lines of some edge sub-pixels SP of the second region 11B do not extend along the X, Y directions but are arranged obliquely. In this embodiment, the non-rectangular display area 11 includes a first area 11A and two second areas 11B. In other embodiments, the non-rectangular pixel region 11 may include at least one first region 11A and at least one second region 11B, and is not limited thereto. The peripheral area 12 is adjacent to and surrounds the non-rectangular display area 11 , and the peripheral area 12 is used for setting circuit layouts such as driving devices, connection lines, testing elements or protection elements for driving the sub-pixels SP in the non-rectangular display area 11 . Due to the trend of narrow frame design, the space of the peripheral area 12 will limit the design freedom of each circuit element.

The non-rectangular display area 11 has a plurality of scan lines 13 arranged along the X direction, and a plurality of data lines 14 arranged along the Y direction. The plurality of scan lines 13 are orthogonal to the plurality of data lines 14 , and the intersections have a plurality of switches respectively corresponding to the sub-pixels SP. The plurality of data lines 14 include a first data line 14a located in the first area 11A, and a second data line 14b located in the second area 11B. In this embodiment, the length of the first data line 14a is longer than that of the second data line 14b. long, and the number of sub-pixels SP connected to the first data line 14a is greater than the number of sub-pixels SP connected to the second data line 14b. The sub-pixel SP has a switch and a pixel electrode. The switch can be a thin film transistor, and the active layer of the thin film transistor can be polysilicon (a-Si), amorphous silicon (poly-Si) or indium gallium zinc oxide (IGZO). The materials of the plurality of scan lines 13 and the plurality of data lines 14 can be single-layer or multi-layer structures such as copper, aluminum, magnesium, molybdenum, titanium, chromium, manganese or silver.

The gate driving unit 15 and the data driving unit 16 are disposed in the peripheral region 12 and electrically connected to the plurality of scan lines 13 and the plurality of data lines 14 . In this embodiment, the gate driving unit 15 and the data driving unit 16 are disposed on the same side of the peripheral region 12. In other embodiments, the gate driving unit 15 and the data driving unit 16 may also be disposed on the peripheral region 12. different sides of the . In this embodiment, the two gate driving units 15 are correspondingly arranged on both sides of the non-rectangular display area 11, and the scanning connection lines 13' on both sides are respectively electrically connected to the odd-numbered and even-numbered scanning lines 13 to provide sub-pixels SP It is used for the gate scanning signal of the switch. In other embodiments, there may be only a single gate driving unit 15, and all the scan lines 13 are electrically connected by the plurality of scan connection lines 13' from one side. The data driving unit 16 is respectively electrically connected to the plurality of data lines 14 to provide data signals of the pixel electrodes in the sub-pixel SP.

At least one first electronic component group 17 and a plurality of second electronic component groups 18 are disposed on the peripheral area 12 . The first electronic component group 17 is electrically connected to the end of the first data line 14a in the first region 11a, and the second electronic component group 18 is electrically connected to the end of the second data line 14b in the second region 11b. In this embodiment, the display device 1 includes a first electronic component group 17, and the plurality of second electronic component groups 18 are divided into a first-type second electronic component group 18a and a second-type second electronic component Group 18b, wherein, the number of electronic components in the first electronic component group 17, the number of corresponding data lines 14 and the occupied area are larger than the first type of second electronic component group 18a, and the electronic components in the first type of second electronic component group 18a The number of components, the number of corresponding data lines 14 and the occupied area are larger than the second type of second electronic component group 18b. In other embodiments, the display device 1 may include a plurality of first electronic component groups 17, and the number of electronic components in the first electronic component group 17, the number of corresponding data lines 14 and the occupied area are smaller than the first type of second electronic components. In the group 18a, the number of electronic components in the first-type second electronic component group 18a, the number of corresponding data lines 14, and the occupied area are larger than those in the second-type second electronic component group 18b.

FIG. 2 shows a partial view 2 of the display device 1 corresponding to FIG. 1 . The first electronic component group 17 includes a plurality of first electronic components 21a, respectively electrically connected to the corresponding first data lines 14a and located at the ends thereof. The second electronic component group 18 includes a plurality of second electronic components 21b, which are respectively electrically connected to the corresponding second data lines 14b and located at their ends, and their arrangement direction is the same as the extending direction X of the scanning lines 13 . In this embodiment, the first-type second electronic component group 18a has six second electronic components 21b, and the second-type second electronic component group 18b has three second electronic components 21b. In other embodiments, the number of the first-type second electronic component group 18a and the second-type second electronic component group 18b including the second electronic component 21b can be any positive integer, and its number is the same as that of the sub-pixel SP and the second data line 14b. The arrangement extension direction (X direction) of the first electronic components 21a and the arrangement extension direction (X direction) of the second electronic components 21b have a distance from the data line 14 extension direction (Y direction), that is, the first electronic component group 17 The long-axis extension direction of the second electronic component group 18 does not overlap with the long-axis extension direction of the second electronic component group 18 and is arranged in a dislocation.

In the embodiments described above, the first electronic component 21 and the second electronic component 21b are electrostatic discharge protection components. For example, it is composed of at least two antiparallel diodes, but it is not limited thereto.

There is a first distance d1 (along the X direction) between the adjacent first electronic components 21a in the first electronic component group 17, and there is a distance d1 (along the X direction) between the adjacent second electronic components 21b in the second electronic component group 18. The second distance d2 (along the X direction), the first distance d1 is not equal to the second distance d2. In this embodiment, the first distance d1 is greater than the second distance d2. The first distance d1 is the distance between two adjacent edges of adjacent first electronic components 21a, and the second distance d2 is the distance between two adjacent edges of adjacent second electronic components 21b.

The peripheral area 12 in FIG. 2 also includes a common line 23 , a wiring layer 25 and a metal layer 27 ; wherein the wiring layer 25 may include test lines or other signal connection lines, but is not limited thereto. The metal layer 27 may be a common plane or a ground plane, but not limited thereto. As shown in FIG. 2, a part of the wiring layer 25 has a first boundary B1, and a part of the metal layer 27 has a second boundary B2; in the X direction, the first boundary B1 and the second boundary B2 There is at least a third distance d3 and a fourth distance d4 between them, and the third distance is not equal to the fourth distance. In this embodiment, the third distance d3 is greater than the fourth distance d4.

FIG. 3 shows a partially enlarged view of the vicinity of the first electronic component group 17 and the second electronic component group 18 in FIG. 2 . All electronic components 21 of the display device 1 are connected to a common line 23 . It can be seen from FIG. 3 that the common line 23 has a first bent portion 23a, and the first electronic component group 17 and the second electronic component group 18 are connected through the first bent portion 23a.

In addition, each of the plurality of second electronic components 21b in the display device 1 can be electrically connected to the corresponding plurality of second data lines 14b through a connection portion LT, and the connection portion LT can be a straight line or a bent line. . For example, the first to fourth second electronic components 21b on the right side of the second electronic component group 18a are respectively connected to the second data lines 14b through the bending lines ad in the connecting portion LT. It should be noted that the lengths of the bending lines a to d are longer as they are farther away from the first bending portion 23a.

Referring to Fig. 2 and Fig. 3, the peripheral area 12 corresponding to the second area 11B of the non-rectangular display area 11, since the common line 23, the wiring layer 25 and the metal layer 27 have occupied a certain layout area after the impedance calculation, so it is reserved The layout space available for the electronic components 21 is less. Therefore, in the present invention, the second distance d2 between the second electronic components 21b disposed corresponding to the second region 11B is set to be smaller than the first distance d2 between the first electronic components 21a disposed corresponding to the first region 11A d1. In order to cope with the reduction of pitch, the electronic components 21 arranged corresponding to the second region 11B, such as the second electronic component 21a in the second electronic component group 18b, are connected to the second data line 14b as required. Bending lines a to d in the connecting portion LT shown in FIG. 3 . Based on the above, the present invention can optimize the layout and make the layout design more flexible.

4A and FIG. 4B show partial enlarged views of the circuit near the second electronic component group 18 in FIG. 3 , to illustrate the electrical performance of the configuration of the electronic component 21 according to the present invention for electrostatic discharge (ESD).

Referring to FIG. 4A , when an electrostatic discharge event ESD occurs on the bend line b, the electrostatic discharge current may flow toward paths path1 and path2, and if most of it flows toward path path1, it may destroy the connection between the data lines 14 in the display area 11. Internal components of the sub-pixel SP (such as thin film transistors, or other display components, etc.). Since the second distance d2 between the second electronic components 21b in the first-type and second-type second electronic component groups 18a, 18b of the present invention is smaller than the first distance d1, the second electronic components in the second electronic component group 18 The capacitance Xc between the elements 21b becomes larger, so that the electrical coupling effect is stronger, and for the electrostatic discharge belonging to the high-frequency AC type, it is equivalent to increasing the width of the path path2. Therefore, through the jumping characteristic of the electrostatic discharge, the electrostatic discharge current will be shunted to the path path2 (as shown in FIG. 4B ), and the electrostatic discharge current flowing to the path path1 will be reduced.

FIG. 5 shows a partially enlarged view of the circuit near the second electronic component group 18 in FIG. 3 , to illustrate the electrical performance of the configuration of the electronic component 21 according to the present invention for electrostatic discharge (ESD).

Referring to FIG. 5 , consider the situation when the electrostatic discharge occurs outside the display area 11 (for example, at the bent portion 23 a of the common line 23 ). Since the impedance is directly proportional to the length of the line, and the current is inversely proportional to the impedance, the greater the difference in the impedance of the paths path1 to path6, the greater the difference in the distribution ratio of the current. Excessive current may cause breakdown and conduction of the electronic components 21b (such as diodes) in the path path1, and the current entering the path path1 will destroy the internal components (such as thin film transistors, or other display components) of the sub-pixel SP connected to the data line 14b. Wait). Therefore, the second distance d2 between the second electronic components 21b in the second-type second electronic component group 18b of the present invention is smaller than the first distance d1, so that the second electronic components in the second-type second electronic component group 18b 21b is as close as possible, so that the electrostatic discharge current can be more evenly distributed on the second electronic components 21b on the paths path1-path6, reducing the possibility of damage.

Claims (12)

1. A display device, comprising: a substrate having an adjacent display area and a peripheral area; A plurality of sub-pixels are arranged in the display area; a plurality of data lines electrically connected to the plurality of sub-pixels; a first electronic component group, disposed in the peripheral area and electrically connected to the plurality of data lines, and including a plurality of first electronic components; and The second electronic component group is arranged in the peripheral area and electrically connected to the plurality of data lines, and includes a plurality of second electronic components, wherein the plurality of first electronic components and the plurality of second electronic components are respectively A plurality of electrostatic discharge protection components; wherein, there is a first spacing between the plurality of adjacent first electronic components, and a second spacing between the adjacent plurality of second electronic components, and the second spacing is less than the first spacing. 2. The display device as claimed in claim 1, wherein some of the plurality of second electronic components are also electrically connected to the corresponding plurality of data lines through a connecting portion. 3. The display device according to claim 2, further comprising a common line, the common line has a first bent portion, and the first electronic component group and the second electronic component group pass through the first bent portion And connect. 4. The display device according to claim 3 , wherein the length of the connecting portion corresponding to the plurality of second electronic components in the second electronic component group is the length between the connecting portion and the first bending portion proportional to the distance. 5. The display device as claimed in claim 1, wherein the plurality of first electronic components and the plurality of second electronic components are arranged along a first direction. 6. The display device according to claim 5, wherein the extension lines of the plurality of first electronic components along the first direction and the extension lines of the plurality of second electronic components along the first direction, in the first direction Up does not overlap. 7. The display device according to claim 1, the substrate further has a metal layer and a wiring layer; Wherein, the metal layer has a second boundary, and the wiring layer has a first boundary; in a first direction, there is a third distance and a fourth distance between the first boundary and the second boundary, and the third The spacing is not equal to the fourth spacing. 8. The display device as claimed in claim 7, wherein the wiring layer is disposed between the metal layer and the peripheral area. 9. The display device as claimed in claim 1, wherein the display area is non-rectangular, including a first area and a second area, and the number of the plurality of sub-pixels arranged in the first area is more than that arranged in the second area The number of the plurality of sub-pixels. 10. The display device as claimed in claim 9, wherein the first electronic component group is connected to the plurality of data lines corresponding to the first area, and the second electronic component group is connected to the plurality of data lines corresponding to the second area. Multiple data lines. 11. The display device as claimed in claim 9, wherein the second pitch is smaller than the first pitch. 12. The display device as claimed in claim 1, wherein each of the plurality of ESD protection elements comprises two anti-parallel diodes.