CN213844090U - Display panel and touch display device - Google Patents
Display panel and touch display device Download PDFInfo
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- CN213844090U CN213844090U CN202022777621.4U CN202022777621U CN213844090U CN 213844090 U CN213844090 U CN 213844090U CN 202022777621 U CN202022777621 U CN 202022777621U CN 213844090 U CN213844090 U CN 213844090U
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Abstract
The utility model provides a display panel and touch-control display device, including array substrate and the various membrane base plate that the box set up to and set up the liquid crystal layer between array substrate and various membrane base plate, still include electrically conductive shielding layer and ground structure, wherein, be provided with electrically conductive shielding layer on the surface that is close to and/or keeps away from array substrate of various membrane base plate, the gross thickness of electrically conductive shielding layer satisfies the noise that can shield the circuit production in the array substrate; the grounding structure is used for electrically connecting the conductive shielding layer with the ground wire of the array substrate. The utility model provides a display panel and touch-control display device can shield the noise that the liquid crystal layer during operation produced to avoid setting up other functional layers on display panel and influenced by the noise.
Description
Technical Field
The utility model relates to a show the field, specifically, relate to a display panel and touch-control display device.
Background
In recent years, touch-sensitive liquid crystal display products have been widely used in many electronic devices, such as mobile phones, computer display panels, touch screens, satellite navigation devices, digital cameras, and the like. The touch-controllable liquid crystal display product generally comprises a liquid crystal display panel and a touch sensor formed on the liquid crystal display panel.
However, the liquid crystal display panel generates noise during operation, and generally, the touch traces in the touch panel cannot completely avoid overlapping with the array traces of the liquid crystal display panel, which causes high-voltage signals on the array traces to be coupled to the touch traces through the capacitors on the circuit of the touch sensor, thereby generating noise and greatly reducing the touch precision. With the development of liquid crystal display products towards high refresh rate and high resolution, the performance of the touch-controllable liquid crystal display products is affected more and more seriously by the noise of the liquid crystal display panel therein, especially in the active pen touch technology. Therefore, in order to achieve an ideal precision specification, how to control the influence of the noise of the liquid crystal display panel on the touch sensor becomes a problem to be solved urgently in the field of touch display.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a aim at solving one of the technical problem that exists among the prior art at least, provide a display panel and touch-control display device, can shield the noise that the liquid crystal layer during operation produced to avoid setting up other functional layers above that and influenced by the noise.
The display panel comprises an array substrate and a color film substrate which are arranged in a box, and a liquid crystal layer arranged between the array substrate and the color film substrate, and is characterized by further comprising a conductive shielding layer and a grounding structure, wherein the surface of the color film substrate, which is close to and/or far away from the array substrate, is provided with the conductive shielding layer, and the total thickness of the conductive shielding layer meets the requirement of shielding noise generated by a circuit in the array substrate;
the grounding structure is used for electrically connecting the conductive shielding layer with a ground wire of the array substrate.
Optionally, the conductive shielding layer is a single layer, and the thickness range of the single layer of the conductive shielding layer is
Optionally, the conductive shielding layer is two layers, and the total thickness of the two layers is within the range of
Wherein a thickness of one of the conductive shielding layers is in a range of less than or equal to
Optionally, the ground structure includes a plurality of first conductors disposed at different positions in a binding region of the array substrate on one side of the display region, where one end of each first conductor is electrically connected to the conductive shielding layer, and the other end of each first conductor is electrically connected to a ground line of the array substrate, corresponding to the conductive shielding layer disposed on the surface of the color filter substrate away from the array substrate.
Optionally, the ground structure includes a plurality of second conductors corresponding to the conductive shielding layer disposed on the surface of the color filter substrate close to the array substrate, the plurality of second conductors are disposed at different positions in a binding region of the array substrate located on one side of the display region, one end of each of the second conductors is electrically connected to the conductive shielding layer, and the other end of each of the second conductors is electrically connected to a ground line of the array substrate.
Optionally, the ground structure includes a plurality of second conductors corresponding to the conductive shielding layer disposed on the surface of the color filter substrate close to the array substrate, the plurality of second conductors are disposed at different positions of the array substrate in a black matrix area of a display area, one end of each of the second conductors is electrically connected to the conductive shielding layer, and the other end of each of the second conductors is electrically connected to a ground line of the array substrate.
Optionally, a plurality of via holes are formed in the conductive shielding layer, and the via holes are distributed in a black matrix region of the array substrate, and extend through the conductive shielding layer and the color filter substrate which are disposed on the surface of the color filter substrate away from the array substrate;
the grounding structure comprises a plurality of third conductors, the third conductors are arranged in the via holes, one end of each third conductor is electrically connected with the conductive shielding layer, and the other end of each third conductor is electrically connected with the ground wire of the array substrate.
Optionally, a plurality of via holes are formed in the conductive shielding layer, and the via holes are distributed in a black matrix region of the array substrate and extend through the conductive shielding layer and the color filter substrate which are disposed on two surfaces of the color filter substrate;
the grounding structure comprises a plurality of third conductors, the third conductors are arranged in the via holes, and each third conductor is simultaneously and electrically connected with two conductive shielding layers and the ground wire of the array substrate.
Optionally, the ground structure is made of conductive adhesive.
As another aspect, the present invention further provides a touch display device, which includes a display panel and a touch sensing layer disposed on the display panel, wherein the display panel employs the display panel described in the above embodiments.
The embodiment of the utility model provides a following beneficial effect has:
the embodiment of the utility model provides a display panel sets up electrically conductive shielding layer and makes its ground connection through being close to and/or keeping away from array substrate's at various membrane base plate on the surface, make the liquid crystal layer covered by the electrically conductive shielding layer of ground connection, in order to avoid forming electric capacity between display panel and other functional layers above that, and the noise that makes the circuit production in the array substrate passes through this capacitive coupling to other functional layers in, thereby shield the noise that the circuit in the array substrate produced, and then avoid setting up the influence that other functional layers on display panel received the noise.
The embodiment of the utility model provides a touch-control display device has adopted the display panel that provides in the aforementioned embodiment, consequently can avoid the noise coupling that the display panel during operation produced to the touch-control inductive layer that sets up on it in to can avoid the touch-control inductive layer to be influenced by the noise, and then improve the touch-control precision and the work efficiency of touch-control inductive layer.
Drawings
Fig. 1 is a schematic side view of a display panel provided in embodiment 1;
fig. 2 is a schematic top view of a display panel provided in embodiment 1;
fig. 3 is a schematic side view of another display panel provided in embodiment 1;
fig. 4 is a schematic side view of the display panel provided in embodiment 2;
fig. 5 is a schematic top view of a display panel provided in embodiment 2;
fig. 6 is a schematic side view of another display panel provided in embodiment 2;
fig. 7 is a schematic top view of another display panel provided in embodiment 2.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the display panel and the touch display device in detail with reference to the attached drawings.
Example 1
The present embodiment provides a display panel, as shown in fig. 1, which includes an array substrate 1 and a color filter substrate 2 that are arranged in a box-to-box manner, and a liquid crystal layer 3 that is arranged between the array substrate 1 and the color filter substrate 2. And moreover, a conductive shielding layer 4 is further arranged on the surface of the color film substrate 2 away from the array substrate 1, and the total thickness of the conductive shielding layer 4 can shield noise generated when the array substrate 1 works. The display panel is further provided with a grounding structure 5, and the grounding structure 5 is used for electrically connecting the conductive shielding layer 4 with a ground line 11 of the array substrate 1 so as to ground the conductive shielding layer 4, thereby preventing a capacitance from being formed between the display panel and other functional layers (such as a touch layer) thereon, and enabling the noise generated by the display panel to be coupled into the other functional layers through the capacitance. In other words, the conductive shielding layer 4 disposed on the upper surface of the display panel and grounded can shield the noise generated by the circuit in the array substrate 1 therebelow, thereby preventing other functional layers thereon from being affected by the noise.
Specifically, the conductive shielding layer 4 should be made of a material having good conductivity and light transmittance, so as to shield the array substrate 1 from noise and ensure the display effect of the display panel. For example, the conductive shielding layer 4 may be made of an indium tin oxide material.
In the present embodiment, the conductive shielding layer 4 is a single layer having a thickness in the range of
The larger the thickness of the conductive shielding layer 4 is, the smaller the square resistance value thereof is, and the stronger the corresponding conductive performance is, but since the thicker the conductive shielding layer 4 disposed on the surface of the color film substrate 2 far from the array substrate 1 is, the more difficult it is to manufacture, the conductive shielding layer 4 cannot be thickened without limitation, and specifically, the thickness is the thickness of the conductive shielding layer 4 without changing the existing mass production process
The conductive shield layer 4 of (2) is best in mass productivity. However, the present embodiment is not limited thereto, and in actual production, the thickness of the conductive shielding layer 4 should be set according to actual working conditions to ensure that it can shield noise and cannot be too thick to make the manufacturing difficult.
In some embodiments, as shown in fig. 2, the ground structure 4 includes a plurality of first electrical conductors 51 corresponding to the conductive shielding layer 4 disposed on the surface of the color filter substrate 2 away from the array substrate 1. One end of each first conductor 51 is electrically connected to the conductive shielding layer 4, and the other end of the first conductor 51 is electrically connected to the ground line 11 of the array substrate 1 to ground the conductive shielding layer 4, thereby enabling the conductive shielding layer 4 to shield noise. The plurality of first electric conductors 51 are arranged at different positions in the binding region 12 on one side of the display region of the array substrate 1 to avoid influencing the display effect of the display panel, and meanwhile, the grounding points of the conductive shielding layer 4 can be multiple, so that the obtained better grounding effect is achieved, and the conductive shielding layer 4 has a better shielding effect for noise.
In some embodiments, the first electrical conductor 51 is made of conductive glue. The conductive adhesive has good conductivity and viscosity, and can be directly dripped at the edge of the color film substrate 2 in the process of manufacturing the substrate and then cured. Specifically, in actual production, the first electric conductor 51 may be made of silver paste. However, the embodiment is not limited thereto, and the first conductor 51 may also be made of a conductive material such as tin.
In some embodiments, the grounding structure 5 may also be provided in a hole in the panel, as shown in fig. 3. Specifically, a plurality of via holes 6 are formed in the conductive shielding layer 4, and the via holes 6 extend through the conductive shielding layer 4 and the color filter substrate 2 which are disposed on the surface of the color filter substrate 2 away from the array substrate 1. The plurality of via holes 6 are distributed in the black matrix region 13 of the array substrate 1, so that the via holes 6 are prevented from affecting the display effect of the display panel. In this condition, the grounding structure 5 includes a plurality of third conductors (not shown in the figure) disposed in the plurality of via holes 6, one end of each of the third conductors is electrically connected to the conductive shielding layer 4, and the other end of each of the third conductors is electrically connected to the ground line 11 of the array substrate 1 to ground the conductive shielding layer 4, so that the conductive shielding layer 4 can shield noise generated by a circuit in the array substrate 1. Specifically, the third conductor may be made of conductive paste. The present embodiment is not limited thereto, and the electrical connection of the conductive shielding layer 4 and the ground line 11 may also be achieved by performing a copper plating process on the via hole 6.
Example 2
The present embodiment provides a display panel, as shown in fig. 4, which includes an array substrate 1 and a color filter substrate 2 arranged in a box-to-box manner, and a liquid crystal layer 3 arranged between the two substrates. The display panel further includes two conductive shielding layers, wherein a first conductive shielding layer 41 is disposed on a surface of the color filter substrate 2 away from the array substrate 1, and a second conductive shielding layer 42 is disposed on a surface of the color filter substrate 2 close to the array substrate 1. The total thickness of the conductive shielding layers (i.e. the sum of the thicknesses of the first conductive shielding layer 41 and the second conductive shielding layer 42) satisfies the requirement of being able to shield the noise generated by the circuit in the array substrate 1, and the conductive shielding layers with double layers can be further thickened to obtain a better shielding effect.
Specifically, the first conductive shielding layer 41 and the second conductive shielding layer 42 should be made of a material having good conductivity and light transmittance, so as to shield the liquid crystal layer 3 from noise and ensure the display effect of the display panel. For example, the first conductive-shield layer 41 and the second conductive-shield layer 42 may both be made of indium tin oxide material.
In some embodiments, two layers of conductive shieldingThe total thickness of the layers being in the range
Wherein the thickness of any one of the conductive shielding layers is less than or equal to
Specifically, as described in example 1,
the maximum thickness of the conductive shield layer 4 is sufficient for mass productivity. However, since the display effect is affected by the excessive thickness of the conductive shielding layer, and the total thickness of the conductive shielding layer cannot be too thick, in actual production, the total thickness of the conductive shielding layer should be designed in consideration of actual conditions to ensure the display effect of the display panel and the shielding effect of the conductive shielding layer at the same time.
The display panel is further provided with a grounding structure, in this embodiment, the grounding structure is used to electrically connect the conductive shielding layer with the ground line 11 of the array substrate 1, so as to ground the first conductive shielding layer 41 and the second conductive shielding layer 42, thereby preventing a capacitance from being formed between the display panel and other functional layers (e.g., touch layers) thereon, so that noise generated by the display panel is coupled into the other functional layers through the capacitance. In other words, the first conductive shielding layer 41 and the second conductive shielding layer 42 disposed on the upper surface of the display panel and grounded can shield the noise generated by the circuit in the array substrate 1 therebelow, thereby preventing other functional layers thereon from being affected by the noise.
As shown in fig. 4, the ground structure includes a first conductor 51 and a second conductor 52.
The grounding structure includes a plurality of first conductors 51 corresponding to the first conductive shielding layer 42 disposed on the surface of the color filter substrate 2 away from the array substrate 1. One end of each first conductor 51 is electrically connected to the first conductive shield layer 41, and the other end of the first conductor 51 is electrically connected to the ground line 11 of the array substrate 1 to ground the first conductive shield layer 41, thereby enabling the first conductive shield layer 41 to shield noise.
The ground structure includes a plurality of second conductors 52 corresponding to the second conductive shielding layer 42 disposed on the surface of the color filter substrate 2 close to the array substrate 1. One end of each second conductor 52 is electrically connected to the second conductive-shielding layer 42, and the other end of the second conductor 52 is electrically connected to the ground line 11 of the array substrate 1.
As shown in fig. 5, the plurality of first conductive bodies 51 are disposed at different positions in the binding region 12 of the array substrate 1 on one side of the display region, and the plurality of second conductive bodies 52 are disposed at different positions in the black matrix region 13 of the display region of the array substrate 1, so as to avoid affecting the display effect of the display panel, and at the same time, the first conductive shielding layer 41 and the second conductive shielding layer 42 can have a plurality of grounding points, so as to obtain a better grounding effect, and further, the first conductive shielding layer 41 and the second conductive shielding layer 42 have a better shielding effect against noise.
In some embodiments, a plurality of second conductive bodies 52 may also be disposed at different positions in the binding region 12 of the array substrate 1 at the display region side.
In some embodiments, both the first electrical conductor 51 and the second electrical conductor 52 may be made of conductive glue.
In some embodiments, the grounding structure may also be disposed in a hole in the panel, as shown in fig. 6. Specifically, as shown in fig. 7, a plurality of via holes 6 are disposed on the first conductive shielding layer 41, the plurality of via holes 6 are distributed in the black matrix region 13 of the array substrate 1, and each via hole 6 extends through the first conductive shielding layer 41, the second conductive shielding layer 42 and the color filter substrate disposed on two surfaces of the color filter substrate 2. The grounding structure includes a plurality of third conductive bodies (not shown in the figure) disposed in the plurality of via holes 6, each of the third conductive bodies electrically connects the two conductive shielding layers and the ground line 11 on the array substrate 1 at the same time, so that the first conductive shielding layer 41 and the second conductive shielding layer 42 are grounded at the same time, thereby enabling the first conductive shielding layer 41 and the second conductive shielding layer 42 to shield noise generated by a circuit in the array substrate 1. Specifically, the third conductor may be made of conductive paste. The present embodiment is not limited thereto, and the electrical connection of the first and second conductive shielding layers 41 and 42 and the ground line 11 may also be achieved by performing a copper plating process on the via hole 6.
In the display panel provided by the embodiment, the conductive shielding layer is arranged on the surface of the color film substrate close to and/or far from the array substrate and grounded, so that the liquid crystal layer is covered by the grounded conductive shielding layer, and the display panel generates noise and is coupled to other functional layers through the capacitor by preventing the capacitor from being formed between the display panel and other functional layers on the display panel, thereby shielding the noise generated by the liquid crystal layer, and further preventing other functional layers arranged on the display panel from being influenced by the noise.
Example 3
The utility model also provides a touch-control display device, including display panel and the touch-control response layer of setting on display panel, wherein, display panel adopts display panel in above-mentioned embodiment. The display panel is provided with the grounded conductive shielding layer, so that the noise generated when the display panel works can be shielded, and the touch sensing layer is prevented from being influenced by the noise due to the fact that the noise is coupled into the touch sensing layer.
The touch display device provided by the embodiment adopts the display panel provided by the embodiment, so that the noise generated when the display panel works can be prevented from being coupled into the touch sensing layer arranged on the display panel, the touch sensing layer can be prevented from being influenced by the noise, and the touch precision and the working efficiency of the touch sensing layer are improved.
It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (10)
1. A display panel comprises an array substrate and a color film substrate which are arranged in a box-to-box mode, and a liquid crystal layer arranged between the array substrate and the color film substrate, and is characterized by further comprising a conductive shielding layer and a grounding structure, wherein the surface of the color film substrate, which is close to and/or far away from the array substrate, is provided with the conductive shielding layer, and the total thickness of the conductive shielding layer meets the requirement of shielding noise generated by a circuit in the array substrate;
the grounding structure is used for electrically connecting the conductive shielding layer with a ground wire of the array substrate.
2. The display panel of claim 1, wherein the conductive shielding layer is a single layer, and the thickness of the single layer of the conductive shielding layer is in the range of
3. The display panel of claim 1, wherein the conductive shielding layer is two layers, and the total thickness of the two conductive shielding layers ranges from
Wherein any one of the conductive shielding layers has a thickness in the range of less than or equal to
4. The display panel according to claim 1, wherein the ground structure includes a plurality of first conductive bodies corresponding to the conductive shielding layer disposed on the surface of the color filter substrate away from the array substrate, the plurality of first conductive bodies are disposed at different positions in a bonding region of the array substrate on a display region side, one end of each of the first conductive bodies is electrically connected to the conductive shielding layer, and the other end of each of the first conductive bodies is electrically connected to a ground line of the array substrate.
5. The display panel according to claim 1, wherein the ground structure includes a plurality of second conductive bodies corresponding to the conductive shielding layer disposed on the surface of the color filter substrate close to the array substrate, the plurality of second conductive bodies are disposed at different positions in a bonding region of the array substrate on a display region side, one end of each of the second conductive bodies is electrically connected to the conductive shielding layer, and the other end of each of the second conductive bodies is electrically connected to a ground line of the array substrate.
6. The display panel according to claim 1, wherein the ground structure includes a plurality of second conductive bodies corresponding to the conductive shielding layer disposed on the surface of the color filter substrate close to the array substrate, the plurality of second conductive bodies are disposed at different positions of the array substrate in a black matrix area of a display area, one end of each of the second conductive bodies is electrically connected to the conductive shielding layer, and the other end of each of the second conductive bodies is electrically connected to a ground line of the array substrate.
7. The display panel according to claim 1, wherein a plurality of via holes are formed in the conductive shielding layer, the via holes are distributed in a black matrix region of the array substrate, and the via holes extend through the conductive shielding layer and the color filter substrate which are formed on a surface of the color filter substrate away from the array substrate;
the grounding structure comprises a plurality of third conductors, the third conductors are arranged in the via holes, one end of each third conductor is electrically connected with the conductive shielding layer, and the other end of each third conductor is electrically connected with the ground wire of the array substrate.
8. The display panel according to claim 1, wherein a plurality of via holes are formed in the conductive shielding layer, the via holes are distributed in a black matrix region of the array substrate, and the via holes extend through the conductive shielding layer and the color filter substrate which are formed on two surfaces of the color filter substrate;
the grounding structure comprises a plurality of third conductors, the third conductors are arranged in the via holes, and each third conductor is simultaneously and electrically connected with two conductive shielding layers and the ground wire of the array substrate.
9. The display panel of claim 1, wherein the grounding structure is made of conductive paste.
10. A touch display device, comprising a display panel and a touch sensing layer disposed on the display panel, wherein the display panel is the display panel according to claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022777621.4U CN213844090U (en) | 2020-11-26 | 2020-11-26 | Display panel and touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022777621.4U CN213844090U (en) | 2020-11-26 | 2020-11-26 | Display panel and touch display device |
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| CN213844090U true CN213844090U (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022777621.4U Active CN213844090U (en) | 2020-11-26 | 2020-11-26 | Display panel and touch display device |
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| CN (1) | CN213844090U (en) |
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