CN108732830B - Display panel and display device - Google Patents

Display panel and display device Download PDF

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Publication number
CN108732830B
CN108732830B CN201810532478.7A CN201810532478A CN108732830B CN 108732830 B CN108732830 B CN 108732830B CN 201810532478 A CN201810532478 A CN 201810532478A CN 108732830 B CN108732830 B CN 108732830B
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Prior art keywords
bonding pad
display panel
pad
source
display
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CN201810532478.7A
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CN108732830A (en
Inventor
张敏
郑怀岭
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Shanghai Tianma Microelectronics Co Ltd
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Shanghai Tianma Microelectronics Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13452—Conductors connecting driver circuitry and terminals of panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/13338—Input devices, e.g. touch panels
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1345—Conductors connecting electrodes to cell terminals
    • G02F1/13458—Terminal pads

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

The invention discloses a display panel and a display device. The display panel includes: a display region and a non-display region surrounding the display region; the first bonding pad is positioned in the non-display area and is used for being electrically connected with a first voltage signal end of the first lamp strip; a first connection wire electrically connecting the first bonding pad and the first source bonding pad, wherein the first source bonding pad is positioned in the non-display area; the array substrate and the opposite substrate are arranged oppositely, and the first connecting wire is positioned on the array substrate and/or the opposite substrate. According to the invention, the first connecting wires are positioned on the array substrate and/or the opposite substrate, and the first connecting wires are not exposed outside the display module, so that the short circuit or disconnection of the first connecting wires can be avoided, and the performance reliability of the display panel is improved.

Description

Display panel and display device
Technical Field
The present invention relates to the field of display technologies, and more particularly, to a display panel and a display device.
Background
Among the existing display device technologies, display panels are mainly classified into two main technologies, i.e., a liquid crystal display panel and an organic self-luminous display panel. The liquid crystal display panel forms an electric field capable of controlling deflection of liquid crystal molecules by applying voltages to two ends of the liquid crystal molecules, so that light transmission is controlled to realize the display function of the display panel; the organic self-luminous display panel adopts an organic electroluminescent material, and when current passes through the organic electroluminescent material, the luminescent material emits light, so that the display function of the display panel is realized.
In order to drive the backlight to emit light, the liquid crystal display device is usually connected to a main circuit board of the display device through a wire led out from the backlight, and the main circuit board controls output voltage signals, which are transmitted to the backlight through the wire to control the backlight to emit light. Therefore, the wires are exposed outside the display module, short circuit or open circuit is easily caused, and the performance of the display device is affected.
Accordingly, it is an urgent problem in the art to provide a display panel and a display device, which can improve performance reliability.
Disclosure of Invention
In view of the above, the present invention provides a display panel and a display device, which solve the technical problem of improving performance reliability.
In order to solve the above technical problems, in one aspect, the present invention provides a display panel, including:
a display region and a non-display region surrounding the display region;
the first bonding pad is positioned in the non-display area and is used for being electrically connected with a first voltage signal end of the first lamp strip;
a first connection wire electrically connecting the first bonding pad and the first source bonding pad, wherein the first source bonding pad is positioned in the non-display area;
the array substrate and the opposite substrate are arranged oppositely, and the first connecting wire is positioned on the array substrate and/or the opposite substrate.
On the other hand, based on the same inventive concept, the invention also provides a display device, which comprises any one of the display panels.
Compared with the prior art, the display panel and the display device have the advantages that at least the following beneficial effects are realized:
in the display panel provided by the invention, the first bonding pad and the first source bonding pad are respectively connected through the first connecting wires, and the first voltage signal end of the first lamp strip is conducted with the flexible circuit board through the first connecting wires arranged on the array substrate and/or the opposite substrate, so that the flexible circuit board can input voltage signals to the first voltage signal end of the first lamp strip. According to the invention, the first connecting wires are positioned on the array substrate and/or the opposite substrate, and the first connecting wires are not exposed outside the display module, so that the short circuit or disconnection of the first connecting wires can be avoided, and the performance reliability of the display panel is improved.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the invention;
FIG. 2 is a diagram of a display panel film structure according to an embodiment of the present invention;
FIG. 3 is a schematic top view of an alternative display panel according to an embodiment of the present invention;
FIG. 4 is a schematic top view of another alternative display panel according to an embodiment of the present invention;
FIG. 5 is a schematic top view of another alternative display panel according to an embodiment of the present invention;
FIG. 6 is a schematic top view of another alternative display panel according to an embodiment of the present invention;
FIG. 7 is a schematic top view of another alternative display panel according to an embodiment of the present invention;
FIG. 8 is a schematic top view of another alternative display panel according to an embodiment of the present invention;
FIG. 9 is a schematic top view of another alternative display panel according to an embodiment of the present invention;
FIG. 10 is a schematic cross-sectional view taken at the location of line Q1 in FIG. 1;
FIG. 11 is a schematic cross-sectional view taken at the location of line Q2 in FIG. 1;
FIG. 12 is a schematic top view of another alternative display panel according to an embodiment of the present invention;
FIG. 13 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C';
FIG. 14 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C';
FIG. 15 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C';
FIG. 16 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C';
FIG. 17 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C';
FIG. 18 is a diagram illustrating a film structure of an alternative embodiment of a display panel according to an embodiment of the present invention;
fig. 19 is a schematic top view of a touch electrode layer in an alternative embodiment of a display panel according to an embodiment of the invention;
FIG. 20 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C';
FIG. 21 is a schematic top view of an alternative embodiment of a display panel according to the present invention;
FIG. 22 is a schematic top view of another alternative display panel according to an embodiment of the present invention;
FIG. 23 is a schematic diagram of another alternative display panel according to an embodiment of the present invention;
fig. 24 is a schematic diagram of a display device according to an embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
The present invention relates to a display panel and a display device. The display panel may include an array substrate, a counter substrate, and a liquid crystal layer disposed between the array substrate and the counter substrate. The opposite substrate can be a color film substrate. The array substrate may include a substrate, and a thin film transistor, a common electrode, a pixel electrode, a gate line, a data line, etc., formed on the substrate, wherein the thin film transistor may serve as a switching device of a sub-pixel in the display panel. The grid electrode of the thin film transistor can be connected with a grid electrode line of the display panel, the grid electrode can be connected with a grid electrode scanning circuit through the grid electrode line, the source electrode of the thin film transistor can be connected with a data line, the drain electrode of the thin film transistor can be connected with a pixel electrode through the data line, and voltage is applied to the pixel electrode through the data line, so that an electric field is formed between the pixel electrode and the common electrode, and then liquid crystal molecules of the liquid crystal layer can deflect in the electric field, so that whether light is emitted or not is controlled, and display of the display panel is further realized. The opposite substrate may be provided with a color resist, wherein the color resist may include a red resist, a green resist, a blue resist, and the like. After the light rays penetrate through the color resistor and are emitted, color display is realized. The liquid crystal molecules in the display panel cannot emit light, and an external light source is also required when display is realized.
Fig. 1 is a schematic top view of a display panel according to an embodiment of the invention. Fig. 2 is a diagram of a display panel film structure according to an embodiment of the present invention.
The display panel shown in fig. 1 includes: a display area AA and a non-display area BA surrounding the display area AA; the first bonding pad P1 located in the non-display area BA, where the first bonding pad P1 is configured to be electrically connected to a first voltage signal end of the first light bar D1, fig. 1 schematically illustrates the first light bar D1 that provides a light source for a display panel, where the first light bar may include an LED lamp, a cold cathode fluorescent lamp, etc. as a light source, and the light source is an LED lamp, for example, in order to implement light emission of the LED lamp in the first light bar D1 after current is introduced, the first light bar D1 needs to have at least two ports as a positive end and a negative end, respectively. The first voltage signal terminal may be a positive terminal or a negative terminal. The first light bar D1 is electrically connected with the first bonding pad P1, and a positive electrode signal or a negative electrode signal is transmitted to the first light bar D1 through the first bonding pad P1; the first connection wire X1, the first source pad YP1 being located at the non-display area BA, wherein the first source pad YP1 is used for fixedly connecting the flexible circuit board FPC (schematically shown in fig. 1) while the electrical connection between the first connection wire X1 and the flexible circuit board FPC is achieved, the first connection wire X1 electrically connects the first pad P1 and the first source pad YP1, wherein the flexible circuit board FPC controls the output voltage signal during the display phase, the voltage signal reaches the first light bar D1 through the first source pad YP1, the first connection wire X1 and the first pad P1, thereby controlling the first light bar D1 to emit light, wherein the first connection wire X1 may include a portion routed within the display area AA, or the first connection wire X1 may be entirely routed within the non-display area BA, which is not limited herein.
As shown in fig. 2, the display panel includes an array substrate 101 and a counter substrate 102, wherein the array substrate 101 and the counter substrate 102 are disposed opposite to each other, and optionally, a liquid crystal molecular layer 103 is further disposed between the array substrate 101 and the counter substrate 102. The first connection wire X1 is located on the array substrate 101 and/or the opposite substrate 102, that is, the first connection wire X1 is formed on the array substrate 101, or formed on the opposite substrate 102, or the first connection wire X1 has both a portion formed on the array substrate 101 and a portion formed on the opposite substrate 102.
In the display panel provided by the invention, the first bonding pad and the first source bonding pad are respectively connected through the first connecting wires, and the first voltage signal end of the first lamp strip is conducted with the flexible circuit board through the first connecting wires arranged on the array substrate and/or the opposite substrate, so that the flexible circuit board can input voltage signals to the first voltage signal end of the first lamp strip. According to the invention, the first connecting wires are positioned on the array substrate and/or the opposite substrate, and the first connecting wires are not exposed outside the display module, so that the short circuit or disconnection of the first connecting wires can be avoided, and the performance reliability of the display panel is improved.
With continued reference to fig. 1, the display panel includes a first side B1 and a second side B2, the first pad P1 is located at the first side B1, and the first source pad YP1 is located at the second side B1; wherein the first side B1 and the second side B2 are adjacent. Wherein the side edge is understood as a non-display area of one side of the display panel. Fig. 1 only illustrates the case where the first side B1 and the second side B2 are adjacent, and in the present invention, the first side B1 and the second side B2 may be disposed opposite to each other, that is, on opposite sides of the display area.
Further, fig. 3 is a schematic top view of an alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 3, the display panel further includes a second pad P2 located in the non-display area BA, where the second pad P2 is configured to be electrically connected to a second voltage signal terminal of the first light bar D1, and the second voltage signal terminal may be a positive terminal or a negative terminal, where the second voltage signal terminal is a negative terminal when the first voltage signal terminal is a positive terminal, and the second voltage signal terminal is a positive terminal when the first voltage signal terminal is a negative terminal; the second connection wire X2, the second source pad YP2 is located in the non-display area BA, and the second connection wire X2 is electrically connected to the second pad P2 and the second source pad YP2, respectively. The second source bonding pad YP2 is used for fixedly connecting a flexible circuit board FPC and simultaneously realizing the electrical connection between the second connecting wire X2 and the flexible circuit board FPC; the second connection wires X2 are located on the array substrate 101 and/or the opposite substrate 102. The second connection wire X2 may be disposed in the same manner as the first connection wire X1, and the second connection wire X2 may be located in the non-display area, or the second connection wire X2 may include a portion of the wiring in the non-display area and a portion of the wiring in the display area.
In this embodiment, the second connecting wires are respectively connected with the second bonding pad and the second source bonding pad, and the second voltage signal end of the first light bar and the flexible circuit board are conducted through the second connecting wires arranged on the array substrate and/or the opposite substrate, so that the flexible circuit board can input voltage signals (for example, positive voltage signals) to the second voltage signal end of the first light bar, and meanwhile, the flexible circuit board can input voltage signals (for example, negative voltage signals) to the first voltage signal end of the first light bar through the first connecting wires, so that the flexible circuit board can control the first light bar. In the invention, the first connecting wire and the second connecting wire are arranged on the array substrate and/or the opposite substrate, compared with the related art, the situation that the wire led out by the first lamp strip is exposed outside the display module is avoided, the wire is prevented from being short-circuited or broken, and the performance reliability of the display panel is improved.
Optionally, fig. 4 is a schematic top view of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 4, the display panel includes: a display area AA and a non-display area BA surrounding the display area AA. The first connection wire X1 is electrically connected to the first pad P1 and the first source pad YP1, the second connection wire X2 is electrically connected to the second pad P2 and the second source pad YP2, and the display area AA is located between the first connection wire X1 and the second connection wire X2. In the embodiment, the first connecting wires and the second connecting wires are arranged on the array substrate and/or the opposite substrate, compared with the related art, the situation that the wires led out by the first lamp strip are exposed outside the display module is avoided, the wires can be prevented from being short-circuited or broken, and the performance reliability of the display panel is improved. In addition, the display area is located between the first connecting wire and the second connecting wire, which is equivalent to dispersing the connecting wires in different non-display areas (display panel frames), which is beneficial to the design of narrow frames.
With continued reference to fig. 4, the display panel includes a first side B1 and a second side B2, the first pad P1 is located at the first side B1, and the first source pad YP1 is located at the second side B2; where the side edge is understood as the non-display area of one side of the display panel. The first side B1 and the second side B2 are located at opposite sides of the display area AA in this embodiment.
In some alternative embodiments, the display panel further includes a third pad and a fourth pad in the non-display region, wherein the third pad and the fourth pad are respectively for electrically connecting the first voltage signal terminal and the second voltage signal terminal of the second light bar. The display panel in this embodiment requires two light bars (i.e., the first light bar and the second light bar) as light sources when displaying, and both light bars need to be controlled by the flexible circuit board to emit light or not. The following examples will illustrate in detail the structure in a display panel corresponding to the different connection of two light bars, and it should be understood that the present invention includes, but is not limited to, the following embodiments.
Fig. 5 is a schematic top view of another alternative embodiment of a display panel according to an embodiment of the present invention. As shown in fig. 5, the first source pad YP1 in the display panel is multiplexed into a third pad P3 for electrically connecting the first voltage signal terminal of the second light bar; the second source pad YP2 in the display panel is multiplexed into a fourth pad P4 for electrically connecting the second voltage signal terminal of the second light bar. I.e. there is no connection wire between the second light bar and the first source pad YP1 and the second source pad YP2, which second light bar is not shown in fig. 5. This embodiment can reduce the number of connection wires provided in the display panel.
Fig. 6 is a schematic top view of another alternative embodiment of a display panel according to an embodiment of the present invention. As shown in fig. 6, the display panel further includes a third pad P3 and a fourth pad P4 located in the non-display area BA, wherein the third pad P3 and the fourth pad P4 are respectively used for electrically connecting the first voltage signal terminal and the second voltage signal terminal of the second light bar D2. A third connection wire X3, the third connection wire X3 being electrically connected to the third pad P3 and the first source pad YP1, respectively, and the third connection wire X3 being located on the array substrate 101 and/or the opposite substrate 102; the fourth connection wire X4, the fourth connection wire X4 is electrically connected to the fourth pad P4 and the second source pad YP2, respectively, and the fourth connection wire X4 is located on the array substrate 101 and/or the opposite substrate 102. The flexible circuit board (not shown in fig. 6) outputs a first voltage signal (e.g., a positive voltage signal) through the first source pad YP1, and outputs a second voltage signal (e.g., a negative voltage signal corresponding to the case where the first voltage signal is a positive voltage signal) through the second source pad YP 2. When the first connection wire X1 and the third connection wire X3 are electrically connected to the first source pad YP1 and the second connection wire X2 and the fourth connection wire X4 are electrically connected to the second source pad YP2, the first light bar D1 and the second light bar D2 can be simultaneously controlled when the flexible circuit board outputs a voltage signal.
In this embodiment, the first light bar and the second light bar are used as light sources when the display panel displays, wherein the first connecting wire is connected with the first bonding pad and the first source bonding pad, and the second connecting wire is connected with the second bonding pad and the second source bonding pad, so that conduction between the first voltage signal end and the second voltage signal end of the first light bar and the flexible circuit board can be realized; the third connecting wire is connected with the third bonding pad and the first source bonding pad, the fourth connecting wire is connected with the fourth bonding pad and the second source bonding pad, so that conduction between the first voltage signal end and the second voltage signal end of the second lamp strip and the flexible circuit board can be realized, the flexible circuit board can simultaneously control the first lamp strip and the second lamp strip, and when one of the two lamp strips fails and cannot normally emit light in the embodiment, the control of the flexible circuit board on the other lamp strip cannot be influenced. Meanwhile, the first connecting wire, the second connecting wire, the third connecting wire and the fourth connecting wire are arranged on the array substrate and/or the opposite substrate, wires led out by the first lamp strip and the second lamp strip are not exposed outside the display module, short circuit or open circuit of the wires can be avoided, and performance reliability of the display panel is improved.
Fig. 7 is a schematic top view of another alternative embodiment of a display panel according to an embodiment of the present invention. As shown in fig. 7, the display panel further includes a third pad P3 and a fourth pad P4 located in the non-display area BA, wherein the third pad P3 and the fourth pad P4 are respectively used for electrically connecting the first voltage signal terminal and the second voltage signal terminal of the second light bar D2. A third connection wire X3, a third source pad YP3, the third source pad YP3 being located in the non-display area BA, the third connection wire X3 being electrically connected to the third pad P3 and the third source pad YP3, respectively, and the third connection wire X3 being located on the array substrate and/or the counter substrate; the fourth connection wire X4, the fourth source pad YP4, the fourth source pad P4 being located in the non-display area BA, the fourth connection wire X4 being electrically connected to the fourth pad P4 and the fourth source pad YP4, respectively, and the fourth connection wire being located on the array substrate and/or the opposite substrate. The flexible circuit board (not shown in fig. 7) outputs a first voltage signal (e.g., a positive voltage signal) to the first source pad YP1 and the third source pad YP3, and outputs a second voltage signal (e.g., a negative voltage signal corresponding to the case where the first voltage signal is a positive voltage signal) to the second source pad YP2 and the fourth source pad YP 4. The circuit connection condition shown in fig. 7 enables the flexible circuit board to control the first light bar D1 and the second light bar D2 separately.
In this embodiment, the first light bar and the second light bar are used as light sources when the display panel displays, wherein the first connecting wire is connected with the first bonding pad and the first source bonding pad, and the second connecting wire is connected with the second bonding pad and the second source bonding pad, so that conduction between the first voltage signal end and the second voltage signal end of the first light bar and the flexible circuit board can be realized; the third connecting wire is connected with the third bonding pad and the third source bonding pad, and the fourth connecting wire is connected with the fourth bonding pad and the fourth source bonding pad, so that conduction between the first voltage signal end and the second voltage signal end of the second lamp strip and the flexible circuit board can be realized, and then the flexible circuit board can respectively control the first lamp strip and the second lamp strip. Meanwhile, the first connecting wire, the second connecting wire, the third connecting wire and the fourth connecting wire are arranged on the array substrate and/or the opposite substrate, wires led out by the first lamp strip and the second lamp strip are not exposed outside the display module, short circuit or open circuit of the wires can be avoided, and performance reliability of the display panel is improved.
Optionally, fig. 8 is a schematic top view of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 8, the display panel further includes a second pad P2 located in the non-display area BA, the second pad P2 being for electrically connecting a second voltage signal terminal of the first light bar D1; the third pad P3 and the fourth pad P4 are located in the non-display area BA, wherein the third pad P3 and the fourth pad P4 are respectively used for electrically connecting the first voltage signal terminal and the second voltage signal terminal of the second light bar D2; the second connecting wire X2, the second connecting wire X2 is electrically connected with the second bonding pad P2 and the third bonding pad P3 respectively, and the second connecting wire X2 is positioned on the array substrate and/or the opposite substrate; the third connection wire X3, the second source pad YP2 is located in the non-display area BA, the third connection wire X3 is electrically connected with the fourth pad P4 and the second source pad YP2, respectively, and the third connection wire X3 is located on the array substrate and/or the opposite substrate.
In this embodiment, the first connecting wire is electrically connected to the first bonding pad and the first source bonding pad, the second connecting wire is electrically connected to the second bonding pad and the third bonding pad, and the third connecting wire is electrically connected to the fourth bonding pad and the second source bonding pad, so that a serial connection mode of the first light bar and the second light bar can be realized, and the flexible circuit board can control the first light bar and the second light bar simultaneously. And the first connecting wire, the second connecting wire and the third connecting wire are arranged on the array substrate and/or the opposite substrate, and the wires led out by the first lamp strip and the second lamp strip are not exposed outside the display module, so that the short circuit or open circuit of the wires can be avoided, and the performance reliability of the display panel is improved.
Optionally, fig. 9 is a schematic top view of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 9, the first light bar D1 and the second light bar D2 can be connected in series, and in this embodiment, the display area AA is located between the first connection wire X1 and the second connection wire X2. The display area is located between the first connecting wire and the second connecting wire, which is equivalent to dispersedly arranging the connecting wires in different non-display areas (display panel frames), which is beneficial to the design of narrow frames.
In addition, in the display panel provided in the foregoing embodiment of the present invention, the positions of the first pad, the first source pad and the first connection wire in the film layer structure of the display panel include a plurality of different situations, and the following embodiments will exemplify a plurality of optional situations.
In some alternative embodiments, the first pads and the first source pads are respectively located at a side of the array substrate facing the opposite substrate. Only the corresponding embodiment of fig. 1 is illustrated. Fig. 10 is a schematic cross-sectional view at the position of the tangent line Q1 in fig. 1. Fig. 11 is a schematic cross-sectional view at the position of the tangent line Q2 in fig. 1. Referring to fig. 10 and 11 simultaneously, the first pad P1 and the first source pad P2 are both located at a side of the array substrate 101 facing the opposite substrate 102. The first bonding pad and the first source bonding pad can be metal bonding pads which are directly manufactured on the surface of the array substrate, or bonding pad metal layers are manufactured on the array substrate, then insulating layers are manufactured on the bonding pad metal layers, the insulating layers are etched to expose bonding pad metal, and the exposed bonding pad metal is the first bonding pad or the first source bonding pad. The first bonding pad and the first source bonding pad may be fabricated in the manner described above, but is not limited to the manner described above.
Optionally, fig. 12 is a schematic top view of another alternative display panel according to an embodiment of the present invention. As shown in fig. 12, the first connection wire X1 electrically connects the first pad P1 and the first source pad YP1. The first connection wires X1 may be entirely routed in the non-display area or include portions routed in the display area, which is not limited herein.
FIG. 13 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C'. As shown in fig. 13, the first connection wire X1 is located on a side of the opposite substrate 102 facing the array substrate 101, and the first connection wire X1 is electrically connected to the first pad P1 and the first source pad YP1 through the anisotropic adhesive J1, respectively. The first pads P1 and the first source pads YP1 are located on a side of the array substrate 101 facing the opposite substrate 102, respectively. In this embodiment, the first bonding pad P1 and the first source bonding pad YP1 are both fabricated on the array substrate, and the first connecting wire X1 is fabricated on the opposite substrate 102, the anisotropic adhesive J1 has the characteristics of being conductive only in one direction and having very large resistance or being almost non-conductive in the other direction, the conductivity between the first connecting wire X1 and the first bonding pad P1 and the first source bonding pad YP1 is ensured through the anisotropic adhesive J1, other effective circuits in the display panel are not affected, and meanwhile, the wires led out by the light bars are not exposed outside the display module of the display module, so that the short circuit or disconnection of the wires can be avoided.
FIG. 14 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C'. As shown in fig. 14, the first connection wire X1 is located at a side of the opposite substrate 102 facing away from the array substrate 101, and the first connection wire X1 is electrically connected to the first pad P1 and the first source pad YP1 through the silver paste J2, respectively. The first pads P1 and the first source pads YP1 are located on a side of the array substrate 101 facing the opposite substrate 102, respectively. In this embodiment, first connecting wire is connected with first pad and first source pad electricity through silver colloid respectively, and silver colloid solidification back has good conductive property, and this embodiment can guarantee that the wire that the lamp strip was drawn forth all does not have the condition of exposing in the outside of display module assembly, can avoid wire short circuit or circuit break.
FIG. 15 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C'. As shown in fig. 15, the first connection wire X1 is located on a side of the array substrate 101 facing the opposite substrate 102. The first pads P1 and the first source pads YP1 are located on a side of the array substrate 101 facing the opposite substrate 102, respectively. The first connection wire X1 may be in contact electrical connection with the first pad P1 and the first source pad YP1, respectively. In this embodiment, the first connection wire, the first bonding pad and the first source bonding pad may be located in the same film layer structure in the display panel, and the first connection wire is electrically connected with the first bonding pad and the first source bonding pad in contact in the same etching process, which is simple in process. Meanwhile, the condition that the wires led out by the lamp strips are not exposed outside the display module of the display module can be guaranteed, and short circuit or circuit breaking of the wires can be avoided.
FIG. 16 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C'. As shown in fig. 16, the first pad P1, the first connection wire X1, and the first source pad YP1 are respectively located at a side of the array substrate 101 facing away from the counter substrate 102. Wherein the first connection wire X1 may be in contact electrical connection with the first pad P1 and the first source pad YP1, respectively. The array substrate is of a multi-film structure and comprises a substrate base layer, a plurality of metal film layers and a plurality of insulating layers, wherein the metal film layers and the insulating layers are arranged on the substrate base layer, and in the embodiment, a first connecting wire, a first bonding pad and a first source bonding pad are all manufactured on one side, away from the opposite substrate, of the array substrate. When the display panel is manufactured, the manufacturing process of the film layer on the substrate is not required to be changed, and only the first connecting wire, the first bonding pad and the first source bonding pad are required to be manufactured on one side of the substrate, which is away from the display surface of the display panel, and the process is relatively simple. And the first bonding pad, the first connecting wire and the first source bonding pad can be arranged in a non-display area of the display panel, so that the occupied area is small, and the screen occupation ratio is not influenced.
FIG. 17 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C'. As shown in fig. 17, the first pad P1, the first connection wire X1, and the first source pad YP1 are respectively located at a side of the opposite substrate 102 facing away from the array substrate 101. Wherein the first connection wire X1 may be in contact electrical connection with the first pad P1 and the first source pad YP1, respectively. In the embodiment, the first bonding pad, the first connecting wire and the first source bonding pad are manufactured on one side, away from the array substrate, of the opposite substrate, the film layer structure and the manufacturing process of the opposite substrate and the array substrate are not influenced, and the process is relatively simple. And the first bonding pad, the first connecting wire and the first source bonding pad can be arranged in a non-display area of the display panel, so that the occupied area is small, and the screen occupation ratio is not influenced.
Fig. 18 is a diagram illustrating a film structure of an alternative embodiment of a display panel according to an embodiment of the present invention. As shown in fig. 18, the display panel further includes an upper polarizer 104 and a touch electrode layer 103, where the upper polarizer 104 and the touch electrode layer 103 are respectively located on a side of the opposite substrate 102 facing away from the array substrate 101, and the touch electrode layer 103 is located on a side of the upper polarizer 104 facing toward the array substrate 101, where the polarizer 102 can dissipate light reflected by a surface of the display panel, and can enhance scattering of light emitted by the display panel to increase a viewing angle, and the touch electrode is located on the touch electrode layer 103, and the touch electrode can implement a touch function of the display panel. Fig. 19 is a schematic top view of a touch electrode layer in an alternative embodiment of a display panel according to an embodiment of the invention. As shown in fig. 19, the display panel includes touch electrodes 1031, the touch electrodes 1031 may be rectangular as shown in fig. 19, or have other shapes, and any two touch electrodes 1031 are arranged in an insulating manner, each touch electrode 1031 is correspondingly connected with at least one touch electrode trace, and each touch electrode 1031 is connected with a touch driving circuit through the touch electrode trace. In the touch stage, touch signals are respectively applied to each touch electrode 1031, and the position of a touch is detected by detecting the change of self capacitance on each touch electrode 1031 transmitted to a touch driving circuit; in this embodiment, the first pad P1, the first connection wire X1, and the first source pad YP1 may be disposed in the same layer as the touch electrode layer 103, respectively, as shown in fig. 17. In the embodiment, the first connecting wire can be respectively and electrically connected with the first bonding pad and the first source bonding pad in a contact manner in the same etching process, the process is simple, the original circuit structure in the display panel is not influenced, the first bonding pad, the first connecting wire and the first source bonding pad can be arranged in a non-display area of the display panel, the occupied area is small, and the screen occupation ratio is not influenced.
FIG. 20 is a schematic cross-sectional view of an alternative embodiment of FIG. 12 taken along line C-C'. As shown in fig. 20, the first pad P1, the first connection wire X1, and the first source pad YP1 are respectively located on the opposite substrate 102 side toward the array substrate 101. Wherein the first connection wire X1 may be in contact electrical connection with the first pad P1 and the first source pad YP1, respectively. According to the embodiment, the first connecting wire can be respectively and electrically connected with the first bonding pad and the first source bonding pad in a contact mode in the same etching process, the process is simple, the original circuit structure in the display panel is not affected, the first bonding pad, the first connecting wire and the first source bonding pad can be arranged in a non-display area of the display panel, the occupied area is small, and the screen occupation ratio is not affected.
Optionally, in the display panel provided by the embodiment of the present invention, the opposite substrate includes a black matrix, in order to implement color display of the display panel, the black matrix divides a display area of the display panel into a plurality of openings, one of the sub-pixels includes an opening, and the arrangement of the black matrix can isolate two adjacent sub-pixels, so that crosstalk is avoided when displaying different colors.
Fig. 21 is a schematic top view of an alternative embodiment of a display panel according to the present invention. As shown in fig. 21, the first connection line X1 may also include a portion routed in the display area AA, in which the first connection line X1 and the black matrix BM are completely overlapped in a direction perpendicular to the plane of the opposite substrate 102, that is, in a direction perpendicular to the plane of the opposite substrate, in which the projection of the first connection line X1 in the plane of the black matrix BM is located in the black matrix BM. The arrangement of the first connection wire X1 has no influence on the opening of the display area, and does not affect the implementation effect. The black matrix BM setting shape in fig. 21 is only schematically represented.
In some alternative embodiments, the first connecting wire may also be made of a transparent material, for example, the first connecting wire may be made of a material including indium tin oxide. The first connection wire may be located in the region of the display area where the black matrix BM is located, or a portion of the first connection wire may be located in the region where the non-BM is located. Fig. 22 is a schematic top view of an alternative embodiment of a display panel according to the present invention. As shown in fig. 22, the first connection wire X1 may also include a portion routed in the display area AA where the first connection wire X1 overlaps the black matrix BM in a direction perpendicular to the plane of the opposite substrate 102 and also overlaps the opening K. The first connecting wire X1 adopts transparent material to make, and light transmissivity is high, and light loss is little when light pierces through the first connecting wire X1 that is located in the opening K, and first connecting wire X1 does not have the influence to display panel's demonstration, and among the technical scheme that this embodiment provided, first connecting wire X1's wiring mode is comparatively nimble.
Note that, the description of the embodiments corresponding to fig. 12 to 22 will be described only with respect to specific positions and arrangement manners of the first pads, the first connection wires, and the first source pads. It can be understood that, in the embodiment of the present invention, the arrangement mode of the bonding pads (such as the second bonding pad, the third bonding pad or the fourth bonding pad) may refer to the arrangement mode of the first bonding pad, in the embodiment of the present invention, the arrangement mode of the connecting wires (such as the second connecting wire, the third connecting wire or the fourth connecting wire) may refer to the arrangement mode of the first connecting wire, and in the embodiment of the present invention, the arrangement mode of the source bonding pads (such as the second source bonding pad, the third source bonding pad or the fourth source bonding pad) may refer to the arrangement mode of the first source bonding pad.
Optionally, fig. 23 is a schematic diagram of another alternative implementation of the display panel according to the embodiment of the present invention. As shown in fig. 23, the display panel is a strip-shaped display panel, and includes a display area AA and a non-display area BA surrounding the display area AA, and the display panel includes a long side CB and a short side DB, and optionally, bonding pads connected to the light bar are disposed in frames corresponding to two short sides DB opposite in a first direction a, and source bonding pads connected to the flexible circuit board are disposed in frames corresponding to two long sides CB opposite in a second direction b, where the first direction a and the second direction b intersect. The connection mode of the light bar and the flexible circuit board in this embodiment can be designed with reference to any one of the above examples.
Alternatively, in fig. 23, the short side DB is 10mm to 20mm in length and the long side CB is 200mm to 400mm in length.
Based on the same inventive concept, fig. 24 is a schematic diagram of a display device according to an embodiment of the present invention, and as shown in fig. 24, the display device includes a display panel 100 according to any embodiment of the present invention. The display device provided by the embodiment of the invention can be any electronic product with a display function, including but not limited to the following categories: television, notebook computer, desktop display, tablet computer, digital camera, mobile phone, smart bracelet, smart glasses, vehicle-mounted display, medical equipment, industrial control equipment, touch interaction terminal, etc.
As can be seen from the above embodiments, the display panel and the display device of the present invention achieve the following advantages:
in the display panel provided by the invention, the first bonding pad and the first source bonding pad are respectively connected through the first connecting wires, and the first voltage signal end of the first lamp strip is conducted with the flexible circuit board through the first connecting wires arranged on the array substrate and/or the opposite substrate, so that the flexible circuit board can input voltage signals to the first voltage signal end of the first lamp strip. According to the invention, the first connecting wires are positioned on the array substrate and/or the opposite substrate, and the first connecting wires are not exposed outside the display module, so that the short circuit or disconnection of the first connecting wires can be avoided, and the performance reliability of the display panel is improved.
While certain specific embodiments of the invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (13)

1. A display panel, comprising:
a display region and a non-display region surrounding the display region;
the first bonding pad is positioned in the non-display area and is used for being electrically connected with a first voltage signal end of a first lamp strip;
a first connection wire, a first source pad, the first source pad being located in the non-display area, the first connection wire electrically connecting the first pad and the first source pad;
the array substrate and the opposite substrate are arranged oppositely, and the first connecting wire is positioned on the array substrate and/or the opposite substrate;
the second bonding pad is positioned in the non-display area and is used for being electrically connected with a second voltage signal end of the first lamp strip;
a second source pad located in the non-display region;
the third bonding pad and the fourth bonding pad are positioned in the non-display area and are respectively used for electrically connecting a first voltage signal end and a second voltage signal end of the second lamp strip;
the second connecting wire, one end of the said second connecting wire is connected with said second bonding pad electrically, and the said second connecting wire locates at said array base plate and/or said opposite base plate;
the other end of the second connecting wire is electrically connected with the fourth bonding pad, the second bonding pad and the fourth bonding pad are respectively positioned on the adjacent side of the display panel, the first source bonding pad is multiplexed into a third bonding pad, and the second source bonding pad is multiplexed into the fourth bonding pad; or,
the other end of the second connecting wire is electrically connected with the third bonding pad, the second source bonding pad is electrically connected with the fourth bonding pad, and the second bonding pad and the third bonding pad are respectively positioned on opposite sides of the display panel.
2. The display panel of claim 1, wherein the display region is located between the first connection wire and the second connection wire when the other end of the second connection wire is electrically connected to the third pad.
3. The display panel of claim 1, wherein,
the second connecting wire is electrically connected with the second bonding pad and the third bonding pad respectively;
further comprises: the third connecting wire and the second source bonding pad are positioned in the non-display area, the third connecting wire is electrically connected with the fourth bonding pad and the second source bonding pad respectively, and the third connecting wire is positioned on the array substrate and/or the opposite substrate.
4. The display panel of claim 1, further comprising:
the first bonding pads and the first source bonding pads are respectively positioned on one side of the array substrate facing the opposite substrate.
5. The display panel of claim 4, wherein,
the first connecting wire is positioned on one side of the opposite substrate facing the array substrate, and is electrically connected with the first bonding pad and the first source bonding pad through anisotropic adhesives respectively; or,
the first connecting wires are located on one side, away from the array substrate, of the opposite substrate, and the first connecting wires are electrically connected with the first bonding pads and the first source bonding pads through silver colloid respectively.
6. The display panel of claim 4, wherein the first connection wire is located at a side of the array substrate facing the opposite substrate.
7. The display panel of claim 1, further comprising:
the first bonding pad, the first connecting wire and the first source bonding pad are respectively positioned on one side of the array substrate, which is away from the opposite substrate.
8. The display panel of claim 1, further comprising:
the first bonding pad, the first connecting wire and the first source bonding pad are respectively positioned on one side of the opposite substrate, which is away from the array substrate.
9. The display panel of claim 8, further comprising:
the upper polaroid and the touch electrode layer are respectively positioned on one side of the opposite substrate, which is away from the array substrate, and the touch electrode layer is positioned on one side of the upper polaroid, which is towards the array substrate;
the first bonding pad, the first connecting wire and the first source bonding pad are respectively arranged on the same layer as the touch electrode layer.
10. The display panel of claim 1, further comprising:
the first bonding pads, the first connecting wires and the first source bonding pads are respectively positioned on one side of the opposite substrate facing the array substrate.
11. The display panel of claim 10, wherein the counter substrate comprises a black matrix;
in the display area, the first connection wire and the black matrix are entirely overlapped in a direction perpendicular to a plane of the opposite substrate.
12. The display panel of claim 1, wherein the display panel includes a first side and a second side, the first pad being located on the first side and the first source pad being located on the second side;
the first side and the second side are disposed adjacent to each other.
13. A display device comprising the display panel according to any one of claims 1 to 12.
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