CN110082971B

CN110082971B - Display panel and display device

Info

Publication number: CN110082971B
Application number: CN201910440589.XA
Authority: CN
Inventors: 刘富强
Original assignee: Hefei Lianbao Information Technology Co Ltd
Current assignee: Hefei Lianbao Information Technology Co Ltd
Priority date: 2019-05-24
Filing date: 2019-05-24
Publication date: 2022-01-11
Anticipated expiration: 2039-05-24
Also published as: CN110082971A

Abstract

The embodiment of the application discloses a display panel and a display device. One embodiment of the display panel includes: the pixel layer is provided with a plurality of sub-pixels in an array mode, and a shading area is formed between every two adjacent sub-pixels arranged along the first direction; the liquid crystal layer is positioned between the pixel layer and the electrode layer; an electrode layer provided with a plurality of electrodes corresponding to the sub-pixel array; the adjacent sub-pixels arranged along the first direction share the same electrode, and the orthographic projection of the electrode to the pixel layer is positioned in a light shielding area between the adjacent sub-pixels sharing the electrode. The display panel with the structure can reduce the number of electrodes in a wiring area and optimize the circuit design by enabling the two adjacent sub-pixels to share the same electrode. And then can reduce the area of shading district, be favorable to improving display panel's aperture opening ratio.

Description

Display panel and display device

Technical Field

The embodiment of the application relates to the technical field of liquid crystal panels, in particular to a display panel and a display device.

Background

At present, in the design of the existing liquid crystal display panel, a black light-shielding layer is usually adopted to shield a routing area in a display area. With the continuous improvement of the living needs of people, the display panel gradually develops towards high resolution. However, the light-shielding area of the light-shielding layer may become a limiting factor affecting the high resolution and light transmittance of the display panel.

Disclosure of Invention

The embodiment of the application provides a display panel and a display device.

In a first aspect, an embodiment of the present application provides a display panel, including: the pixel layer is provided with a plurality of sub-pixels in an array mode, and a shading area is formed between every two adjacent sub-pixels arranged along the first direction; the liquid crystal layer is positioned between the pixel layer and the electrode layer; an electrode layer provided with a plurality of electrodes corresponding to the sub-pixel array; the adjacent sub-pixels arranged along the first direction share the same electrode, and the orthographic projection of the electrode to the pixel layer is positioned in a light shielding area between the adjacent sub-pixels sharing the electrode.

In some embodiments, for the electrodes arranged in the same direction, the voltage of the (i + 1) th electrode is related to the voltage of the ith electrode and the working voltage of the corresponding ith sub-pixel, wherein i is a positive integer.

In some embodiments, the voltage of the (i + 1) th electrode is equal to the sum of the voltage of the (i) th electrode and the operating voltage of the corresponding (i) th sub-pixel; or the voltage of the (i + 1) th electrode is equal to the difference value of the voltage of the ith electrode and the working voltage of the corresponding ith sub-pixel.

In some embodiments, each electrode on the electrode layer is electrically connected to at least one integrated circuit in the set of integrated circuits by at least one wire.

In some embodiments, the integrated circuit group comprises two integrated circuits symmetrically arranged in the non-display area of the display panel; each electrode on the electrode layer is electrically connected with the two integrated circuits through two wires respectively; or part of the electrodes on the electrode layer are connected with one integrated circuit in the invention integrated circuit group, and the other part of the electrodes on the electrode layer are connected with the other integrated circuit in the invention integrated circuit group.

In some embodiments, two integrated circuits in the integrated circuit group are respectively arranged in the upper and lower end non-display areas of the display panel; the electrode on the upper half part of the electrode layer is connected with the integrated circuit on the upper non-display area, and the electrode on the lower half part of the electrode layer is connected with the integrated circuit on the lower non-display area.

In some embodiments, each of the conductive wires is disposed on the electrode layer; or part of the wires are arranged on the electrode layer, and the other part of the wires are arranged on the wire layer; or all the leads are arranged on the lead layer; wherein, the lead layer and the electrode layer are not the same layer.

In some embodiments, the electrode layer is located between the wire layer and the liquid crystal layer.

In some embodiments, the display panel further comprises an upper polarizer, a lower polarizer, and a light source; the pixel layer is arranged between the upper polarizer and the liquid crystal layer, the electrode layer is arranged between the lower polarizer and the liquid crystal layer, and the light source is incident from the end face of the lower polarizer, which deviates from the electrode layer.

In a second aspect, embodiments of the present application provide a display device on which the display panel described in any one of the embodiments of the first aspect is mounted.

The display panel and the display device provided by the embodiment of the application can comprise a pixel layer, a liquid crystal layer and an electrode layer. Here, a plurality of sub-pixels are arranged on the pixel layer in an array manner, and a light shielding region is formed between adjacent sub-pixels arranged along the first direction; the liquid crystal layer is positioned between the pixel layer and the electrode layer; a plurality of electrodes are arranged on the electrode layer corresponding to the sub-pixel array. The same electrode can be shared between adjacent sub-pixels arranged along the first direction to serve as a common electrode. And the orthographic projection of the common electrode to the pixel layer is positioned in a shading area between adjacent sub-pixels sharing the common electrode. The display panel with the structure can reduce the number of electrodes in a wiring area and optimize the circuit design by enabling the two adjacent sub-pixels to share the same electrode. And further, the area of the light shielding region can be reduced, which is beneficial to improving the aperture opening ratio (namely, the light transmittance) of the display panel.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural diagram of an embodiment of a conventional display panel;

FIG. 2 is a schematic structural diagram of an embodiment of a display panel provided in the present application;

fig. 3 is a schematic view illustrating a routing structure of a display panel according to an embodiment of the present disclosure;

fig. 4 is a schematic view illustrating a routing structure of another embodiment of a display panel provided in the present application;

fig. 5 is a schematic view illustrating a routing structure of a display panel according to still another embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of another embodiment of a display panel provided in the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the related invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Please refer to fig. 2, which shows a schematic structural diagram of an embodiment of a display panel provided in the present application. As shown in fig. 2, the display panel in the present embodiment may include a pixel layer 10, a liquid crystal layer 20, and an electrode layer 30. The liquid crystal layer 20 may be located between the pixel layer 10 and the electrode layer 30.

In the present embodiment, a plurality of sub-pixels, such as

sub-pixels

101, 102, 103 and the like shown in fig. 2, may be arranged in an array on the pixel layer 10. Here, the color of the sub-pixel is not limited in the present application, and three colors of red, green, and blue, which are commonly used, may be used. Thus, when light passes through the sub-pixels with different colors, the corresponding color of light can be presented. And normally, subpixels of three colors are alternately arranged. Thus, various colors can be presented on the display panel by mixing the three lights with different colors.

In the present embodiment, light-shielding regions, such as light-shielding regions b and c shown in fig. 2, may be formed between adjacent sub-pixels arranged along the first direction on the pixel layer 10. The first direction here may be the horizontal direction shown in fig. 2. Alternatively, the first direction may be a vertical direction as shown in fig. 2. In order to reduce the overall thickness of the display panel, the light-shielding region may be disposed on the pixel layer 10. Namely, the shading area and each sub-pixel are arranged in the same layer. In some embodiments, the light-shielding region may be disposed in a different layer (i.e., a different layer) with each sub-pixel. In order to perform the shielding function, the light shielding layer needs to be located on an end surface of the pixel layer away from the liquid crystal layer, that is, the pixel layer is located between the light shielding layer and the liquid crystal layer.

As shown in fig. 2, a plurality of electrodes, such as

electrodes

301, 302, 303, 304, etc., may be disposed on the electrode layer 30 corresponding to the sub-pixel array. I.e. the arrangement direction of the electrodes is the same as the arrangement direction of the sub-pixels. As can be seen from fig. 2, the electrodes may be arranged in a first direction (e.g., a horizontal direction) and may extend in a second direction (a direction intersecting the first direction, e.g., a vertical direction). The same electrode can be shared between adjacent sub-pixels arranged along the first direction to serve as a common electrode. And the orthographic projection of the electrode (common electrode) to the pixel layer 10 may be located in a light-shielding region between adjacent sub-pixels sharing the electrode (common electrode).

As an example, as can be seen from fig. 2, the electrode 302 may be shared between the

sub-pixels

101 and 102 arranged in the horizontal direction. And electrode 303 may be shared between sub-pixel 102 and sub-pixel 103. At this time, by controlling the potential difference between the

electrodes

301 and 302, the rotation of the liquid crystal molecules located under the sub-pixel 101 can be realized, thereby controlling the display luminance of the sub-pixel 101. And by controlling the potential difference between the

electrodes

302, 303, the rotation of the liquid crystal molecules located under the sub-pixel 102 can be achieved, thereby controlling the display brightness of the sub-pixel 102. And so on, and will not be described herein.

With the conventional display panel, as shown in fig. 1, when the display brightness of the sub-pixel 101 ' needs to be adjusted, it is usually necessary to control the potential difference between the electrodes 301 ', 302 '. When the display brightness of the sub-pixel 102 ' needs to be adjusted, the potential difference between the electrodes 303 ', 304 ' needs to be controlled. And so on. That is, the corresponding electrodes may be different for different sub-pixels. In the conventional display panel, the number of electrodes is generally twice as many as the number of sub-pixels.

Since these electrodes for driving the liquid crystal molecules do not need to perform display in the display panel, they need to be shielded by a light-shielding region. As can be seen from fig. 1, the orthographic projections of the electrodes 302 ' and 303 ' to the pixel layer 10 are located in the light-shielding region b '. That is, the light-shielding region b ' needs to cover the shielding electrodes 302 ', 303 ' at the same time. As can be seen from fig. 2, the orthogonal projection of the common electrode 302 to the pixel layer 10 may be located in the light-shielding region b. Namely, the common electrode 302 is covered and shielded by the light shielding region b between the

adjacent sub-pixels

101 and 102 sharing the common electrode 302. Meanwhile, the orthogonal projection of the common electrode 303 to the pixel layer 10 may be located in the light-shielding region c. Therefore, compared with the existing display panel, the number of the electrodes positioned in each light-shielding area is less in the embodiment, so that the area of each light-shielding area can be reduced, and the aperture opening ratio of the display panel is favorably improved. That is, in the display panel of the present embodiment, the same electrode is shared between adjacent sub-pixels, so that the number of electrodes can be reduced, and the circuit design can be optimized. And then can help reducing the area of shading area, be favorable to improving the aperture opening ratio of display panel.

Note that, for an electrode located at the edge of the display area, such as the electrode 301 shown in fig. 2, it is sometimes necessary to provide a light-shielding area to shield it, such as the light-shielding area a shown in fig. 2. Therefore, the light leakage phenomenon at the edge of the display panel can be reduced or avoided, and the display effect is improved.

In some embodiments, while optimizing the layout, to avoid affecting the display data, for each electrode arranged in the same direction, the voltage of the (i + 1) th electrode may be related to the voltage of the (i) th electrode and the operating voltage of the corresponding (i) th sub-pixel. Wherein i is a positive integer. The same direction here mainly refers to the arrangement direction of the sub-pixels sharing the same electrode, i.e., the first direction. That is, when the first direction is a horizontal direction (or a vertical direction), the same direction here is a same row direction (or a same column direction).

For example, as shown in FIG. 2, for the

electrodes

301, 302, 303 arranged in the same row, if the initial voltage of the electrode 301 is U₀The working voltage of the sub-pixel 101 (i.e. the potential difference between the electrodes 301 and 302) is V₁Then the voltage of electrode 302 may be U₀+V₁Or U₀-V₁. If the working voltage of the sub-pixel 102 (i.e. the potential difference between the electrodes 302 and 303) is V₂Then the voltage of electrode 303 may be U₀+V₁-V₂Or U₀-V₁+V₂. I.e. the voltage of the (i + 1) th electrode is equal to the sum of the voltage of the ith electrode and the operating voltage of the corresponding ith sub-pixel. Or the voltage of the (i + 1) th electrode is equal to the difference value of the voltage of the ith electrode and the working voltage of the corresponding ith sub-pixel. Therefore, the accuracy of the displayed content can be effectively ensured.

Optionally, in order to implement the driving control of the display panel, the display panel in this embodiment may further include an integrated circuit group. The Integrated Circuit group herein may include at least one Integrated Circuit (IC). At this time, each electrode on the electrode layer 30 may be electrically connected to at least one integrated circuit in the integrated circuit group through at least one conductive wire to receive a driving signal. The integrated circuit group may be independent of the display panel or may be disposed on the display panel. In general, to avoid affecting the display area of the display panel and reduce the occupation of the display area, the integrated circuit group may be disposed in the non-display area of the display panel. In addition, the connection wiring mode of each electrode and the integrated circuit group is not limited in the present application, and can be set according to actual requirements.

As an example, as shown in fig. 3, the group of integrated circuits may comprise two integrated circuits IC1, IC 2. And the two integrated circuits are positioned in the lower non-display area of the display panel. In this case, each column electrode on the electrode layer 30 located on the left side of the display region may be connected to the integrated circuit IC1 through one wire. And the column electrodes on the right side of the display area may each be connected to an integrated circuit IC2 by a respective wire. This is beneficial to improving the control efficiency and shortening the response time of the display panel. And the wiring width of the lower non-display region can be reduced, thereby contributing to a reduction in the area of the lower non-display region.

In some application scenarios, the integrated circuit group may also include two integrated circuits symmetrically disposed in the non-display area. Symmetrical arrangement here may refer to complete symmetry of position or may primarily refer to symmetry of the side on which it is located, while the particular position on the side is not necessarily symmetrical. In this case, each electrode on the electrode layer may be electrically connected to two integrated circuits through two wires. Or part of the electrodes on the electrode layer are connected with one integrated circuit in the integrated circuit group, and the other part of the electrodes on the electrode layer are connected with the other integrated circuit in the integrated circuit group.

For example, as shown in fig. 4, the integrated circuits IC1 and IC2 are symmetrically disposed in the upper and lower non-display regions of the display panel. In order to increase the conductivity of the traces, the electrodes on the electrode layer 30 can be connected to the integrated circuits IC1 and IC2 through two wires. This also helps to extend the lifetime of the display panel. For another example, as shown in fig. 5, the electrode positioned at the upper half of the electrode layer 30 may be connected to an integrated circuit IC1 positioned at the upper non-display region. And the electrode at the lower half of the electrode layer 30 may be connected to the integrated circuit IC2 at the lower non-display region. Therefore, the wiring length can be reduced, the conductivity is improved, and the production cost is reduced. Meanwhile, since the number of electrodes connected to each integrated circuit is reduced by half, that is, the number of wires connected thereto is reduced by half, it is possible to contribute to further reducing the area of the light-shielding region.

It is understood that, for the display panel in each of the above embodiments, in order to reduce the panel thickness, each of the above wires may be disposed on the electrode layer 30. I.e. the wires and electrodes may be provided in the same layer. Alternatively, in order to further reduce the area of the light-shielding region, some of the above-described wires may be provided to the electrode layer 30. And another portion of the conductive lines may be disposed on the conductive line layer. Wherein, the lead layer and the electrode layer are not the same layer. For example, in fig. 4, the conductive wires connected to the IC1 may be disposed on the electrode layer 30, and the conductive wires connected to the IC2 may be disposed on the conductive wire layer. Alternatively, in order to further reduce the influence of the conductive lines on the area of the light-shielding region, the conductive lines may be disposed on the conductive line layer.

It should be noted that the position of the conductive line layer in the display panel is not limited in this application. However, in order to avoid the influence of the connection between the conductive wires and the electrodes on other layers or the interference of the conductive wires on the rotation control of the liquid crystal molecules during the signal transmission process, the electrode layer may be located between the conductive wire layer and the liquid crystal layer. I.e. the conductor layer may be arranged at an end face of the electrode layer facing away from the liquid crystal layer.

In some optional implementations, the display panel in the present application may further include an upper polarizer, a lower polarizer, and a light source. Referring to fig. 6, a schematic structural diagram of another embodiment of the display panel provided in the present application is shown. As shown in fig. 6, the pixel layer 10 may be positioned between the upper polarizer 41 and the liquid crystal layer 20. The electrode layer 30 may be positioned between the lower polarizer 42 and the liquid crystal layer 20. Namely, the pixel layer 10, the liquid crystal layer 20 and the electrode layer 30 are located between the upper polarizer 41 and the lower polarizer 42. And the light source may be incident from the end face of the lower polarizer 42 facing away from the electrode layer 30.

It is understood that the display panel In the embodiments of the present application may be mainly an IPS (In-Plane Switching) liquid crystal panel, that is, each electrode is located In the same Plane, and liquid crystal molecules of the liquid crystal layer are horizontally aligned. In addition, each layer (such as the pixel layer 10, the liquid crystal layer 20, the electrode layer 30, etc.) in the display panel can be obtained by using a manufacturing method and a process commonly used in the existing display panel, and details are not repeated herein.

The embodiment of the application also provides a display device. The display device may have a display panel mounted thereon as described in the above embodiments. The display device herein may be various devices having a display screen, such as an electronic device (including but not limited to electronic products such as a smart phone, a tablet computer, a notebook computer, etc.), an electrical device or a household electrical appliance (such as a refrigerator, a television), and so on.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the spirit of the invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A display panel, comprising:

the pixel layer is provided with a plurality of sub-pixels in an array mode, and a shading area is formed between every two adjacent sub-pixels arranged along the first direction;

the liquid crystal layer is positioned between the pixel layer and the electrode layer;

an electrode layer provided with a plurality of electrodes corresponding to the sub-pixel array;

the adjacent sub-pixels arranged along the first direction share the same electrode, and the orthographic projection of the electrode to the pixel layer is positioned in a shading area between the adjacent sub-pixels sharing the electrode;

for each electrode arranged in the same direction, the voltage of the (i + 1) th electrode is related to the voltage of the ith electrode and the working voltage of the corresponding ith sub-pixel, wherein i is a positive integer;

the voltage of the (i + 1) th electrode is equal to the sum of the voltage of the ith electrode and the working voltage of the corresponding ith sub-pixel; or;

the voltage of the (i + 1) th electrode is equal to the difference value of the voltage of the ith electrode and the working voltage of the corresponding ith sub-pixel.

2. The display panel according to claim 1, wherein each electrode on the electrode layer is electrically connected to at least one integrated circuit in the integrated circuit group through at least one wire.

3. The display panel according to claim 2, wherein the integrated circuit group comprises two integrated circuits symmetrically disposed in the non-display region of the display panel;

each electrode on the electrode layer is electrically connected with the two integrated circuits through two wires respectively; or part of the electrodes on the electrode layer are connected with one integrated circuit in the integrated circuit group, and the other part of the electrodes on the electrode layer are connected with the other integrated circuit in the integrated circuit group.

4. The display panel according to claim 3, wherein two integrated circuits in the integrated circuit group are respectively disposed in the upper and lower non-display regions of the display panel;

the electrode on the upper half part of the electrode layer is connected with the integrated circuit on the upper non-display area, and the electrode on the lower half part of the electrode layer is connected with the integrated circuit on the lower non-display area.

5. The display panel according to claim 2, wherein each of the wires is disposed on the electrode layer; or part of the wires are arranged on the electrode layer, and the other part of the wires are arranged on the wire layer; or all the leads are arranged on the lead layer; wherein, the lead layer and the electrode layer are not the same layer.

6. The display panel of claim 5, wherein the electrode layer is between the wire layer and the liquid crystal layer.

7. The display panel according to any one of claims 1 to 6, wherein the display panel further comprises an upper polarizer, a lower polarizer, and a light source;

the pixel layer is arranged between the upper polarizer and the liquid crystal layer, the electrode layer is arranged between the lower polarizer and the liquid crystal layer, and the light source is incident from the end face of the lower polarizer, which deviates from the electrode layer.

8. A display device characterized in that the display panel according to any one of claims 1 to 7 is mounted on the display device.