CN105653087A - Display panel and display device - Google Patents

Abstract

The invention describes a display panel and a display device, including a display area and a frame area. The display area includes first signal lines and second signal lines, and the frame area includes fan-shaped wires and semiconductor chips. The fan-shaped wiring includes a first fan-shaped wiring and a second fan-shaped wiring. The semiconductor chip includes a first terminal and a second terminal. The first terminal is located in the middle area of the semiconductor chip, and the second terminal is located on both sides of the first terminal. The number of one terminal is smaller than the number of second terminal. One end of the first fan-shaped wiring is electrically connected to the first terminal, and the other end is electrically connected to the first signal line; one end of the second fan-shaped wiring is electrically connected to the second terminal, and the other end is electrically connected to the second signal line. This structural design is beneficial to reduce the height of the fan-shaped wiring area of the display panel, and facilitates the realization of a narrow frame design of the display panel.

Description

A display panel and a display device

technical field

The invention relates to the display field, in particular to a display panel and a display device.

Background technique

In recent years, touch screen has become a research hotspot in the display industry. Compared with traditional input methods such as mouse and keyboard, the touch screen has the advantages of simple operation and easy integration, and is favored by electronic display devices, especially mobile terminal electronic equipment. With the development of electronic equipment towards thinner, narrower frame, high resolution, etc., the touch screen has gradually changed from an external structure to an embedded structure. Among them, the in-cell touch screen structure, in simple terms, is to integrate the touch electrodes into the substrate of the display module without adding an additional touch substrate outside the display module, which is easy to realize the thinning of the display panel.

In order to reduce the interference of the display signal, the embedded touch display device generally adopts a time-sharing driving mode during operation, that is, it is divided into a display driving stage and a touch driving stage within a scanning period of one frame. Because the display driving signal is different from the touch driving signal, at least two driving chips are required to provide the display driving signal and the touch driving signal respectively, which not only increases the design cost of the display panel, but also is not conducive to the realization of the narrow border of the touch display panel. . On the other hand, the signal lines in the display panel are electrically connected to the driver chip mainly through fanout lines, wherein the height of the fanout lines directly determines the size of the frame area of the display panel. With the development of display panels in the direction of high resolution and narrow bezels, how to reduce the height of fan-shaped traces has become one of the problems that display panel manufacturers have to solve urgently.

Contents of the invention

In view of this, the present invention provides a display panel, including a display area and a frame area. The display area is provided with a first signal line and a second signal line, and the frame area includes a fan-shaped wiring and a semiconductor chip, wherein the fan-shaped wiring includes a first fan-shaped wiring and a second fan-shaped wiring, and the semiconductor chip includes a first terminal and a semiconductor chip. second terminals, the first terminals are located in the middle area of the semiconductor chip region, the second terminals are located on both sides of the first terminals, and the number of the first terminals is smaller than the number of the second terminals; One end of the first fan-shaped wire is electrically connected to the first terminal, the other end is electrically connected to the second terminal, one end of the second fan-shaped wire is electrically connected to the second terminal, and the other end is electrically connected to the second terminal. The second signal line is electrically connected.

The present invention also provides a display device using the above-mentioned display panel.

Compared with the prior art, the display panel and the display device provided by the present invention have at least one of the following outstanding advantages:

The structural design of the display panel and the display device provided by the present invention can realize the integration of the touch function and the display function by using one chip, and by adjusting the position of different types of signal terminals on the chip, it can effectively reduce the fan-shaped wiring area on the display panel. The purpose of the height is to reduce the design cost of the display panel and the display device, and at the same time, it is easy to realize the narrow frame design of the display panel.

Description of drawings

Fig. 1 is a schematic diagram of a display panel provided by the prior art;

FIG. 2 is a schematic diagram of the distribution of terminals on the semiconductor chip in the display panel provided in FIG. 1;

Fig. 3 is a partially enlarged view of fan-shaped traces in the dotted line in Fig. 1;

Fig. 4 is a schematic diagram of a display panel provided by an embodiment of the present invention;

FIG. 5 is a schematic diagram of the distribution of terminals on the semiconductor chip in the display panel provided in FIG. 4;

Fig. 6 is a schematic diagram of the specific principles of the technical effects produced by the embodiments of the present invention;

7 is a schematic diagram of an array substrate of a display panel provided by an embodiment of the present invention;

FIG. 8 is a display device provided by an embodiment of the present invention.

detailed description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

It should be noted that in the following description, specific details are set forth in order to fully understand the present invention. However, the present invention can be implemented in many other ways than those described here, and those skilled in the art can make similar extensions without departing from the connotation of the present invention. Accordingly, the present invention is not limited to the specific embodiments disclosed below.

FIG. 1 is a schematic diagram of a display panel provided by an existing design. As shown in FIG. 1 , the display panel 10 includes a display area 11 and a frame area 12 . The display area 11 is provided with a plurality of signal lines 111, including a first signal line 111a and a second signal line 111b. The non-display area 12 includes a fan-shaped wiring 121 and a semiconductor chip 122. The fan-shaped wiring 121 includes a first fan-shaped wiring 121a and a second fan-shaped wiring 121b. A plurality of terminals 124 are arranged on the semiconductor chip 122, including a first terminal 124a and a second terminal 124a. Two terminals 124b. It can be seen from FIG. 1 that one end of the sector wire 121 is electrically connected to a plurality of terminals 124 on the semiconductor chip 122 , and the other end is electrically connected to the signal line 111 on the display area 11 . Therefore, the semiconductor chip 122 transmits the signal to the fan-shaped wiring 121 through the terminal 124 , and then transmits the signal to the signal line 111 of the display area through the fan-shaped wiring 121 .

FIG. 2 is a schematic diagram showing distribution of terminals 124 of the semiconductor chip 122 on the display panel 10 shown in FIG. 1 . As shown in Figure 2, the semiconductor chip 122 includes a first terminal 124a and a second terminal 124b, the first terminal 124a is located at both ends of the semiconductor chip 122, the second terminal 124b is located in the middle area of the semiconductor chip 122, and the first terminal 124a The number is less than that of the second terminals 124b. The display panel 10 shown in Figure 1, wherein the first signal line 111b is a data signal line that provides data signals to each pixel (not shown in the figure) in the display area 11, and the second signal line 111a is a data signal line that supplies a data signal to the display area 11. Each of the touch electrodes (not shown in the figure) provides touch signal lines for touch signals. Those skilled in the art can understand that the number of data signal lines in the display panel is far greater than the number of touch signal lines. And because the data signal lines are electrically connected to the terminals on the semiconductor one by one through fan-shaped wiring, that is, a first signal line 111b as shown in FIG. 1 is connected to a terminal on the semiconductor chip 122 through a first fan-shaped wiring 121b. The second terminal 124b. Therefore, the number of the first terminals 124a is far less than the number of the second terminals 124b.

As shown in the display panel 10 shown in FIG. 1 , the sector wires 121 and the semiconductor chips 122 are located in the frame area 12 . Wherein, the height of the semiconductor chip 122 is much smaller than the height of the fan-shaped wiring 121 , so to reduce the height of the frame area 12 , it is necessary to reduce the height of the fan-shaped wiring 121 .

As shown in FIG. 1, the spacing between the first signal lines 111b of the display area 11 is A. It can be understood that the spacing A between the first signal lines 111b is approximately the pixel width, because the pixel width in the display panel is Therefore, the distance A between the first signal lines 111b is also constant. Simultaneously, for a produced semiconductor chip 122 as shown in FIG. 2 , the interval between any adjacent two terminals on it is uniform and fixed, and it is set as B, that is, the interval between adjacent first terminals 124a, The interval between adjacent second terminals 124b and the interval between adjacent first terminals 124a and second terminals 124b are both B.

In the design of the display panel, in order to ensure the stability of signal transmission between the fan-shaped wires and the electrical insulation between adjacent fan-shaped wires, a certain gap needs to be maintained between the fan-shaped wires 121 of the same type. Generally, the width of the semiconductor chip in the display panel is much smaller than the width of the display area. In order to ensure a constant distance between two adjacent fan-shaped wires, the fan-shaped wires need to be connected in a bent manner.

FIG. 3 is a schematic diagram of a bending connection method of the second fan-shaped trace 121 b in the dotted line in FIG. 1 . It can be seen from FIG. 3 that the height of the broken line part 130 of the second fan-shaped trace 121b Where N is the number of the second fan-shaped wires 121b, C is the gap between adjacent wires of the second fan-shaped wires 121b, and B is the distance between terminals on the semiconductor chip 122. It can be understood that the height h' of the folded line portion 130 is closely related to the number N of the second fan-shaped traces 121b: the height of the folded line portion of the second fan-shaped traces 121b increases as the number N of the second fan-shaped traces 121b increases , as shown by the arrow in Figure 3. Therefore, the height of the fan-shaped trace area in the display panel depends on the type of fan-shaped trace with the largest number of traces, and the height of this type of fan-shaped trace is mainly determined by the height h' of the broken line part. In the display panel 10 shown in FIG. 1, the number of wires in the second fan-shaped wiring area 121b is much higher than the number of wires in the first fan-shaped wiring area 121a. Therefore, the height of the fan-shaped wiring area of the display panel 10 The height h shown in FIG. 1 is determined by the second fan-shaped wiring area 121b.

According to the geometric relationship, h′=(N−1)*cosα in FIG. 3 can also be deduced, where α is the angle between the second fan-shaped wiring 121b and the semiconductor chip 122 in the X direction. In the display panel, the number of signal lines of a certain type is determined according to display requirements, and N cannot be easily changed for any type of signal line. Therefore, according to the formula h'=(N-1)*cosα, in order to reduce the height of the broken line part, it can be realized from the angle of increasing α. According to the formula, it can be obtained that when α increases, the height h' of the broken line part of the fan-shaped trace decreases accordingly. Since α is directly related to the positions of the fan-shaped traces and the signal lines and terminals connected to them respectively, and the position of the signal lines is determined according to the requirements of the display area, therefore, to increase α can only be achieved by adjusting the positions of the terminals , it can be seen from Figure 3 that when the terminal moves along the X direction, the value of α increases accordingly when the terminal connected to the fan-shaped trace moves in the direction of the signal line connected to the fan-shaped trace, so that the fan-shaped trace The height of the broken line portion is reduced, and the size of the frame area of the entire display panel is further shortened.

According to the above principles, an embodiment of the present invention provides a display panel 20 , as shown in FIG. 4 . The touch panel 20 includes a display area 21 and a non-display area 22 . The display area 21 includes a plurality of signal lines 211, including a first signal line 211a and a second signal line 211b, wherein the first signal line 211b is used as the signal line for providing data signals to each pixel (not shown in the figure) in the display area 21. The data signal lines and the second signal lines 211a are touch signal lines that provide touch signals to each touch electrode (not shown in the figure) in the display area 21 as an example, and the number of the first signal lines 211a is smaller than that of the second signal lines The number of 211b. The non-display area 22 includes a fan-shaped wiring 221 and a semiconductor chip 222. The fan-shaped wiring 221 includes a first fan-shaped wiring 221a and a second fan-shaped wiring area 221b; a plurality of terminals 224 are set on the semiconductor chip 222, including a first terminal 224a and The second terminal 224b. As can be seen from FIG. 4 , one end of the sector wire 221 is electrically connected to a plurality of terminals 224 on the semiconductor chip 222 , and the other end is electrically connected to the signal line 211 on the display area 21 . Therefore, the semiconductor chip 222 transmits the signal to the fan-shaped wiring 221 through the terminal 224 , and then transmits the signal to the signal line 211 of the display area through the fan-shaped wiring 221 . It should be noted that the electrical connections mentioned above are all electrical connections one by one. Since the number of the first signal lines 211a is smaller than the number of the second signal lines 211b, the number of the first terminals 224a is smaller than the number of the second terminals 224b.

5 is a schematic diagram of terminal distribution on the semiconductor chip 222 of the display panel 20 shown in FIG. The difference with the prior art is that, on the semiconductor chip 222 provided by the embodiment of the present invention, a small number of first terminals 224a are placed in the middle area of the semiconductor chip 222, and a large number of second terminals 224b are respectively located in the semiconductor chip 222. ends. That is, compared with the prior art, in the embodiment of the present invention, a large number of second terminals 224b are moved to both ends of the semiconductor chip. The effect of this design is that, for the second terminal 224b located on the left side of the first terminal 224a (that is, the X1 direction in FIG. 4 ), the included angle between the second fan-shaped trace 221b and the semiconductor chip 222 in the X1 direction can be increased. α1, for the second terminal 224b on the right side of the first terminal 224a (that is, the X2 direction in FIG. 4 ), the included angle α2 between the second fan-shaped trace 221b and the semiconductor chip 222 in the X2 direction can be increased. This technical effect is illustrated by the second terminal 224b located on the left side of the first terminal 224a (that is, the X1 direction in the figure). As shown in FIG. , the angle between the second fan-shaped wiring and the semiconductor chip changes from α to α1. According to the formula h′=(N-1)*cosα, it can be known that h′ decreases as α increases. Therefore, this design can reduce the height of the broken line portion of the second fan-shaped trace 221b, thereby reducing the height of the second fan-shaped trace 221b. As mentioned above, the height of the fan-shaped wires in the display panel is mainly determined by the large number of category fan-shaped wires, that is, the height of the second fan-shaped wires 221b in the display panel 20 in the embodiment of the present invention. Therefore, the embodiment of the present invention can reduce the height H of the second fan-shaped wiring 221b electrically connected to the second terminal 224b by moving a large number of second terminals 224b to both ends of the semiconductor chip, thereby reducing the fan-shaped wiring of the display panel. The height of the line.

The embodiments of the present invention can achieve the purpose of reducing the fan-shaped trace height of the display panel without reducing the number of signal lines and increasing the width of the semiconductor chip, and it is easy to realize the narrow frame design of the display panel.

Preferably, in the embodiment of the present invention, the number of the second terminals 224b located on both sides of the first terminal 224a is equal, that is, to ensure that α1 and α2 are equal. The advantage of such a design is that the height of the second fan-shaped wiring 221b can be reduced to the greatest extent, which is beneficial to the narrow frame design of the display panel.

It should be noted that, in the embodiment of the present invention, the first fan-shaped wiring 221a and the second fan-shaped wiring 221b are located on different conductive layers, so as to avoid signal interference caused by crossing between the first fan-shaped wiring 221a and the second fan-shaped wiring 221b affect the normal operation of the display panel.

Specifically, in the display panel provided by the embodiment of the present invention, the first signal line 211a is a touch electrode line, the second signal line 211b is a data line, the first fan-shaped wiring 221a is a touch fan-shaped wiring, and the second fan-shaped wiring The line 221b is a fan-shaped data line, the first terminal 224a is a touch terminal, and the second terminal 224b is a data signal terminal.

It should be noted that the arrangement of the first signal line 211a and the first fan-shaped wiring 221a of the display panel provided in the embodiment of the present invention is not limited to the manner shown in FIG. 4 , and the present invention is not limited thereto.

It should be noted that the thickness of the first signal line and the second signal line illustrated in this application document is only for distinguishing the first signal line and the second signal line, and does not represent the first signal line and the second signal line in the actual product. The thickness of the line. Likewise, the numbers of the first signal lines and the second signal lines are only for illustration, and do not represent the actual numbers of the first signal lines and the second signal lines. The number of first terminals and second terminals is only an example to illustrate that the number of first terminals is significantly smaller than that of second terminals, and does not represent the number of first terminals and second terminals in actual products.

FIG. 7 is a schematic cross-sectional structure diagram of a display panel 20 provided by an embodiment of the present invention, including a first substrate 230 and a second substrate 240 disposed relative to the first substrate 230 , and between the first substrate 230 and the second substrate 240. The intermediate dielectric layer 250. Wherein, a plurality of common electrodes 232 are disposed on the first substrate 230 , and in the embodiment of the present invention, the common electrodes 232 are multiplexed as touch electrodes at the same time. When the common electrodes are multiplexed as touch electrodes, the first terminal 224a can also provide a common voltage signal, and the second terminal 224b can also provide a signal with the same phase and amplitude as the touch signal. At this time, the display panel 20 adopts a time-division driving mode, and is divided into a display phase and a touch phase within a scanning period of one frame. In the display stage, the first terminal 224a provides a common voltage signal to the display panel 200, and the second terminal 224b provides a data signal to the display panel 20; in the touch stage, the first terminal 224a provides a touch signal to the display panel 20, and the second terminal 224b supplies The display panel 20 provides a signal with the same phase and amplitude as the touch signal, so as to reduce the coupling capacitance caused by the level alternation between the signal line in the display area and the common electrode, and ensure the touch accuracy of the touch panel.

It should be noted that, the array substrate of the display panel 20 provided in the embodiment of the present invention is not limited to the schematic structure shown in FIG. 7 .

As shown in FIG. 8 , the embodiment of the present invention also provides a display device, which includes the display panel in the above-mentioned embodiment provided by the embodiment of the present invention. The display device can be the mobile phone shown in FIG. 8 , or It may be a display device such as a computer.

In summary, the present invention provides a display panel and a display device that can integrate touch signals and display signals into one chip, and at the same time adjust the first terminal on the chip that provides touch signals and the terminal that provides data signals. The positions of the two second terminals are used to reduce the height of the main fan-shaped wiring (the fan-shaped wiring with a large number of fan-shaped wiring, corresponding to the second fan-shaped wiring in the embodiment of the present invention), so as to realize the design of the narrow frame of the display panel .

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. a display panel, comprise display space and rim area, wherein said display space comprises the first signal wire and second signal line, rim area comprises sector and walks line and semi-conductor chip, wherein, described sector is walked line and is comprised the first sector and walk line and the 2nd sector walks line, described semi-conductor chip comprises the first terminal and two-terminal, described first terminal is positioned at the region intermediate of described semi-conductor chip, described two-terminal is positioned at the both sides of described first terminal, and the quantity of described first terminal is less than the quantity of described two-terminal; Wherein, one end that described first sector walks line is electrically connected with described first terminal, and the other end is electrically connected with described first signal wire, and one end that described 2nd sector walks line is electrically connected with described two-terminal, and the other end is electrically connected with described second signal line.

2. display panel as claimed in claim 1, wherein, the quantity that described two-terminal is positioned at described first terminal both sides is equal.

3. display panel as claimed in claim 1, wherein, described first sector walks line and described 2nd sector walks line layering setting.

4. display panel as claimed in claim 1, wherein, described first terminal is walked line by described first sector and is provided the first signal to described display panel, and described two-terminal is walked line by described 2nd sector and provided second signal to described display panel.

5. display panel as claimed in claim 1, wherein, described display panel comprises multiple pixel electrode and multiple public electrode. Wherein, described multiple public electrode is multiplexed with touch control electrode.

6. display panel as claimed in claim 4, wherein, described first signal is for touching control actuate signal, and described second signal is data signal.

7. display panel as claimed in claim 5, wherein, described first terminal can also provide the 3rd signal, and described two-terminal can also provide the 4th signal.

8. display panel as claimed in claim 7, wherein, described 3rd signal is public voltage signal, and described 4th signal is and the signal of described first signal same-phase with amplitude.

9. display panel as claimed in claim 5, adopts timesharing to drive pattern, and in the display stage, described first terminal provides described 3rd signal to described display panel, and described two-terminal provides described second signal to described display panel; In the tactile control stage, described first terminal provides described first signal to described display panel, and described two-terminal provides described 4th signal to described display panel.

10. a display unit, comprises display panel as claimed in claim 1.