Display panel and display device

Abstract

The utility model provides a display panel and a display device.The display panel comprises a display area and a frame area arranged around the display area, and the display panel further comprises an array substrate, an opposite substrate and a sealant layer. The array substrate is provided with the light filtering part, the orthographic projection of the sealing adhesive layer on the array substrate covers the orthographic projection of the light filtering part on the array substrate, and the width of the light filtering part is smaller than that of the sealing adhesive layer, so that when the sealing adhesive layer is cured, the light filtering part can absorb or shield part of ultraviolet light, and the transmittance of the ultraviolet light is reduced; the curing rate of the sealing adhesive layer is reduced, so that the tensile strength of the sealing adhesive layer can be improved, the risk that the film layer is stripped when the display panel is pulled by external force is reduced, the water vapor protection capability of the display panel can be improved under the condition that a polytetrafluoroethylene modified material is not used, and the production cost of the display panel is reduced.

Description

Technical Field

[0001] The utility model relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] At present, the environmental range of display panel applications is becoming wider and wider, which also brings challenges to the development of the display panel industry. If the display panel is to be used in a high temperature and high humidity environment, it needs to pass the high temperature and high humidity storage and high temperature and high humidity action tests first. In order to improve the water vapor protection ability of the display panel, the use of polytetrafluoroethylene modified materials has become a major trend in the development of the entire display panel. When the polarizer on the display panel shrinks due to the external environment, the polytetrafluoroethylene modified material has a low hardness and strong tensile strength, which can effectively reduce the probability of water vapor intrusion caused by interface peeling.

[0003] Due to the high cost of modified polytetrafluoroethylene materials, if the inorganic insulating material of the existing display panel is changed to modified polytetrafluoroethylene, the design of all film layers on the display panel needs to be changed. The design change is large and the investment cost is high, and the transmittance of the display panel will be reduced.

[0004] Therefore, it is necessary to provide a display panel and a display device to improve this defect. Utility Model Content

[0005] The embodiments of the present invention provide a display panel and a display device, which can reduce the production cost of the display panel and improve the water vapor protection capability of the display panel.

[0006] An embodiment of the utility model provides a display panel, the display panel comprising a display area and a frame area arranged around the display area, the display panel further comprising:

[0007] An array substrate;

[0008] an opposing substrate, arranged opposite to the array substrate; and

[0009] A sealant layer is disposed between the array substrate and the counter substrate, and the sealant layer is disposed in the frame area;

[0010] The display panel further comprises at least one filter portion, the orthographic projection of the sealant layer on the array substrate covers the orthographic projection of the filter portion on the array substrate, and the width of the filter portion is smaller than the width of the sealant layer.

[0011] According to an embodiment of the utility model, the filter portion is arranged on a side of the sealant layer close to the array substrate, and the opposing substrate includes a shading layer, and the orthographic projection of the shading layer on the array substrate covers the orthographic projection of the sealant layer on the array substrate.

[0012] According to an embodiment of the present invention, the array substrate includes a first substrate and a color filter layer, the color filter layer is arranged on a side of the first substrate close to the counter substrate, and the filter portion is arranged in the same layer as the color filter layer.

[0013] According to an embodiment of the present invention, the color filter layer includes a red color resist, a green color resist and a blue color resist, and the filter portion is made of the same material as one of the red color resist, the green color resist and the blue color resist.

[0014] According to an embodiment of the utility model, the array substrate includes a conductive layer, the conductive layer is arranged on a side of the first substrate close to the opposite substrate, the conductive layer includes a plurality of signal traces, and the signal traces are arranged in the border area;

[0015] The light filtering part is arranged between the sealant layer and the conductive layer, and there is a light-transmitting gap between adjacent signal wirings, and the light filtering part is arranged in alignment with the light-transmitting gap.

[0016] According to an embodiment of the present invention, the width of the filter portion is greater than the line width of the signal trace.

[0017] According to an embodiment of the utility model, the array substrate further includes:

[0018] A first passivation layer is disposed on a side of the conductive layer away from the first substrate;

[0019] a second passivation layer, disposed on a side of the first passivation layer away from the first substrate;

[0020] Wherein, the filter part is arranged between the first passivation layer and the second passivation layer.

[0021] According to an embodiment of the present invention, the ratio of the width of the filter portion to the width of the sealant layer is greater than or equal to 1:10 and less than or equal to 3:10.

[0022] According to an embodiment of the present invention, the display panel includes at least two filter portions, and the at least two filter portions are arranged in the frame area at intervals from each other.

[0023] An embodiment of the present invention further provides a display device, which includes the display panel as described above.

[0024] Beneficial effects of the embodiments of the utility model: The embodiments of the utility model provide a display panel and a display device, wherein the display panel includes a display area and a frame area arranged around the display area, and the display panel also includes an array substrate, an opposing substrate and a sealant layer. By adding a filter portion in the display panel, and making the orthographic projection of the sealant layer on the array substrate cover the orthographic projection of the filter portion on the array substrate, since the width of the filter portion is smaller than the width of the sealant layer, when the sealant layer is cured, ultraviolet light is irradiated to the sealant layer from the side of the filter portion away from the sealant layer, and the filter portion can absorb or block part of the ultraviolet light, thereby reducing the transmittance of the ultraviolet light, so that the curing rate of the sealant layer decreases, thereby increasing the tensile strength of the sealant layer, thereby reducing the risk of film peeling when the display panel is pulled by external force, and further improving the water vapor protection capability of the display panel without using polytetrafluoroethylene modified materials, and reducing the production cost of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A top view of a display panel provided in an embodiment of the utility model;

[0026] Figure 2 The first display panel is provided for the embodiment of the utility model Figure 1 A cross-sectional view along the A-A' direction is shown;

[0027] Figure 3 The second display panel embodiment of the present invention provides Figure 1 The cross-sectional view along the AA' direction is shown.

[0028] Figure 4 A schematic structural diagram of a display device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0029] The following descriptions of the embodiments are made with reference to the attached drawings to illustrate specific embodiments in which the present invention may be implemented. The directional terms mentioned in the present invention, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In the drawings, units with similar structures are represented by the same reference numerals.

[0030] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] The embodiments of the present invention provide a display panel, which can reduce the production cost of the display panel and improve the water vapor protection capability of the display panel.

[0032] like Figure 1 As shown, Figure 1 A top view of a display panel provided in an embodiment of the utility model, wherein the display panel includes a display area AA and a border area BA arranged around the display area AA, wherein a plurality of sub-pixels for realizing a screen image display function are arranged in the display area AA, and the border area BA can be used for placing circuits, signal routings, integrated circuits and other components related to realizing the screen image display function.

[0033] like Figure 2 As shown, Figure 2 The first display panel is provided for the embodiment of the utility model Figure 1 As shown in the cross-sectional view along the A-A' direction, the display panel includes an array substrate 1, an opposing substrate 2, a liquid crystal layer 3 and a sealant layer 4. The opposing substrate 2 and the array substrate 1 are opposite to each other and are spaced apart from each other. The liquid crystal layer 3 is disposed between the array substrate 1 and the opposing substrate 2. The sealant layer 4 is disposed between the array substrate 1 and the opposing substrate 2. The sealant layer 4 is located in the border area BA. The array substrate 1, the opposing substrate 2 and the sealant layer 4 enclose a closed accommodating cavity, and the liquid crystal layer 3 is accommodated in the accommodating cavity.

[0034] Furthermore, the display panel also includes at least one filter portion 5, which is arranged in the border area BA, and the filter portion 5 and the sealant layer 4 are aligned in the thickness direction of the display panel. The width w1 of the filter portion 5 is smaller than the width w2 of the sealant layer 4, and the orthographic projection of the sealant layer 4 on the array substrate 1 covers the orthographic projection of the filter portion 5 on the array substrate 1.

[0035] For example, in combination Figure 1 and Figure 2 As shown, the display panel has a filter part 5, and the filter part 5 is arranged in the frame area BA. The filter part 5 and the sealant layer 4 are arranged around the display area AA, and form a fully surrounding structure for the display area AA. After the array substrate 1 and the counter substrate 2 are bonded together through the uncured sealant layer 4, the sealant layer 4 needs to be photocured to cure the sealant layer 4. When the sealant layer 4 is photocured, ultraviolet light is irradiated to the sealant layer 4 from the side of the filter part 5 away from the sealant layer 4. The filter part 5 can absorb or block part of the ultraviolet light, and the remaining ultraviolet light not absorbed or blocked by the filter part 5 can be irradiated to the sealant layer 4 to cure it. Since part of the ultraviolet light is absorbed or blocked by the filter 5, the transmittance of the ultraviolet light is reduced and the curing rate of the sealant layer is reduced. This can increase the tensile strength of the sealant layer, thereby reducing the risk of film peeling when the display panel is pulled by external force. Therefore, the water vapor protection ability of the display panel can be improved without using polytetrafluoroethylene modified materials, and the production cost of the display panel can be reduced.

[0036] like Figure 3 As shown, Figure 3 The second display panel embodiment of the present invention provides Figure 1 The cross-sectional view along the A-A' direction shown in FIG. Figure 2 The structures of the display panels shown are substantially the same, except that the display panel comprises at least two filter portions 5, and the at least two filter portions 5 are arranged at intervals from each other in the frame area BA.

[0037] For example, Figure 3 As shown, the two filter parts 5 are spaced apart in the frame area BA, and the width of each of the two filter parts 5 is smaller than the width of the sealant layer 4, and the sum of the widths of the two filter parts 5 is also smaller than the width w2 of the sealant layer 4. This can also reduce the transmittance of ultraviolet light, thereby reducing the curing rate of the sealant layer, thereby increasing the tensile strength of the sealant layer.

[0038] In practical applications, the number of filter parts 5 in the border area BA is not limited to 1 or 2 in the above embodiments, but can also be 3 or more, which can achieve the effect of reducing the curing rate of the sealant layer and increasing the tensile strength of the sealant layer.

[0039] Furthermore, the ratio of the width w1 of the filter portion 5 to the width w2 of the sealant layer 4 is greater than or equal to 1:10 and less than or equal to 3:10. In this way, it is possible to avoid the situation where the transmittance of ultraviolet light during the curing of the sealant layer 4 cannot be effectively reduced due to the width of the filter portion 5 being too small, and it is also possible to avoid the situation where the transmittance of ultraviolet light during the curing of the sealant layer 4 is too small due to the width of the filter portion 5 being too large, resulting in incomplete curing of the sealant layer 4.

[0040] For example, the ratio of the width w1 of the filter portion 5 to the width w2 of the sealant layer 4 may be 1:10, 1:8, 1:7, 1:5 or 3:10, etc.

[0041] Furthermore, if Figure 2 As shown, the filter portion 5 is arranged on the side of the sealant layer 4 close to the array substrate 1. When the sealant layer 4 is subjected to photocuring treatment, ultraviolet light is irradiated from the side of the array substrate 1 away from the opposing substrate 2 to the sealant layer 4. The filter portion 5 can absorb or block part of the ultraviolet light, thereby reducing the transmittance of the ultraviolet light, so that the curing rate of the sealant layer 4 decreases, thereby enhancing the tensile strength of the sealant layer 4.

[0042] Furthermore, the array substrate 1 includes a first substrate 11 and a color filter layer 12 . The color filter layer 12 is disposed on a side of the first substrate 11 close to the counter substrate 2 . The filter portion 5 is disposed on the same layer as the color filter layer 12 .

[0043] For example, Figure 2As shown, the array substrate 1 includes a conductive layer 13, an insulating layer 14, a first passivation layer 15 and a second passivation layer 16. The conductive layer 13 may be a gate metal layer or a source-drain electrode metal layer. The conductive layer 13 is disposed on a side of the first substrate 11 close to the opposing substrate 2. The insulating layer 14 is disposed on the first substrate 11 and the conductive layer 13. The first passivation layer 15 is disposed on a side of the conductive layer 13 away from the first substrate 11. The second passivation layer 16 is disposed on a side of the first passivation layer 15 away from the first substrate 11. The filter portion 5 is disposed between the first passivation layer 15 and the second passivation layer 16, and the color filter layer 12 is disposed between the first passivation layer 15 and the second passivation layer 16. In this way, the water vapor protection capability of the display panel can be improved and the production cost of the display panel can be reduced by adding the filter portion 5 below the sealant layer 4 in the frame area BA without changing the original film structure of the display panel.

[0044] Furthermore, the color filter layer 12 includes a red color resist 121 , a green color resist 122 and a blue color resist 123 , and the filter portion 5 is made of the same material as one of the red color resist 121 , the green color resist 122 and the blue color resist 123 .

[0045] For example, Figure 2 As shown, the red color resist 121, the green color resist 122 and the blue color resist 123 are arranged at intervals on the first passivation layer, and the material of the filter portion 5 is the same as that of the blue color resist 123. The filter portion 5 can be prepared by the same process as the blue color resist 123. In this way, the filter portion 5 can be prepared synchronously by using the existing process, thereby avoiding the increase in production costs due to changing the film structure of the display panel due to the addition of the filter portion 5.

[0046] Exemplarily, the material of the filter portion 5 can be the same as that of the red color resist 121, and the filter portion 5 can be prepared using the same process as the red color resist 121; or, the material of the filter portion 5 can also be the same as that of the green color resist 122, and the filter portion 5 can be prepared using the same process as the green color resist 122.

[0047] Furthermore, the conductive layer 13 includes a plurality of signal lines 131 , the signal lines 131 are arranged in the frame area BA, the filter unit 5 is arranged between the sealant layer 4 and the conductive layer 13 , and there are light-transmitting gaps 130 between adjacent signal lines 131 . The filter unit 5 and the light-transmitting gaps 130 are arranged in alignment.

[0048] For example, Figure 2As shown, a plurality of signal lines 131 are arranged in the border area BA, and the plurality of signal lines 131 are arranged at intervals on the surface of the first substrate 11 close to the opposing substrate 2, and a light-transmitting gap 130 is formed between adjacent signal lines 131. The orthographic projection of the filter part 5 on the first substrate 11 covers part of the orthographic projection of the light-transmitting gap 130 on the first substrate 11, and the ultraviolet light irradiated from the side of the array substrate 1 away from the opposing substrate 2 can be irradiated to the filter part 5 or the sealant layer 4 through the light-transmitting gap, so as to avoid the conductive layer 13 from blocking the ultraviolet light irradiated from the side of the array substrate 1 away from the opposing substrate 2, resulting in the sealant layer 4 being unable to cure, thereby ensuring that when the sealant layer 4 can achieve a curing effect, the curing rate of the sealant layer 4 is appropriately reduced, thereby improving the tensile strength of the sealant layer 4.

[0049] Furthermore, if Figure 2 As shown, the width w1 of the filter portion 5 is greater than the line width w3 of the signal wiring 131, and the orthographic projection of the filter portion 5 on the first substrate 11 partially overlaps with the orthographic projection of the signal wiring 131 on the first substrate 11, or the orthographic projection of the filter portion 5 on the first substrate 11 covers the orthographic projection of the signal wiring 131 on the first substrate 11, thereby preventing the signal wiring 131 from blocking the ultraviolet light, resulting in the ultraviolet light being unable to irradiate the filter portion 5 or the sealant layer 4.

[0050] Furthermore, if Figure 2 As shown, the opposing substrate 2 also includes a second substrate 21 and a shading layer 22. The shading layer 22 is arranged on a side of the second substrate 21 close to the array substrate 1. The shading layer 22 is arranged in the display area AA and the frame area BA. The orthographic projection of the shading layer 22 on the array substrate 1 covers the orthographic projection of the sealant layer 4 on the array substrate 1.

[0051] Exemplarily, the light shielding layer 22 includes a first light shielding portion 221 and a second light shielding portion 222. The first light shielding portion 221 is disposed between adjacent color resists of different colors in the display area AA to prevent adjacent sub-pixels of different colors from mixing. The second light shielding portion 222 is disposed in the frame area BA. The orthographic projection of the second light shielding portion 222 on the array substrate 1 covers the orthographic projection of the sealant layer 4 on the array substrate 1, and also covers the orthographic projection of the filter portion 5 on the array substrate 1, so as to prevent light from being emitted from the frame area BA and causing light leakage.

[0052] For example, Figure 2 As shown, the array substrate 1 also includes a first alignment layer 17, which is arranged on the side of the second passivation layer 16 away from the first substrate 11, and the opposing substrate 2 also includes a second alignment layer 23, which is arranged on the side of the shading layer 22 away from the second substrate 21.

[0053] For example, Figure 2 As shown, the display panel further includes a first polarizer 6 and a second polarizer 7. The first polarizer 6 is disposed on a side of the array substrate 1 that is away from the opposing substrate 2, and the second polarizer 7 is disposed on a side of the opposing substrate 2 that is away from the array substrate 1. When the first polarizer 6 or the second polarizer 7 shrinks and pulls the edge of the display panel due to the influence of the external environment, the first passivation layer 15 and the second passivation layer 16 in the array substrate 1 are not easily peeled off due to the enhanced tensile strength of the sealant layer 4, so that water vapor can be prevented from intruding and corroding the display panel, thereby improving the water vapor protection capability of the display panel and helping the display panel to pass the high temperature and high humidity composite test.

[0054] The embodiment of the utility model further provides a display device, Figure 4 As shown, Figure 4 A structural schematic diagram of a display device provided for an embodiment of the utility model, the display device includes a display panel 10 and a device assembly 20, the device assembly 20 may include components such as a housing, a power supply, a camera component, a processor, and a circuit board, the display panel 10 is fixedly mounted on the device assembly 20, the display panel 10 may be the display panel provided by any of the above embodiments, and the display panel 10 in the display device can achieve the same effect as the display panel in the above embodiments.

[0055] Beneficial effects of the embodiments of the utility model: The embodiments of the utility model provide a display panel and a display device, wherein the display panel includes a display area and a frame area arranged around the display area, and the display panel also includes an array substrate, an opposing substrate and a sealant layer. By arranging a filter portion in the frame area, and making the orthographic projection of the sealant layer on the array substrate cover the orthographic projection of the filter portion on the array substrate, since the width of the filter portion is smaller than the width of the sealant layer, when the sealant layer is cured, ultraviolet light is irradiated to the sealant layer from the side of the filter portion away from the sealant layer, and the filter portion can absorb or block part of the ultraviolet light, thereby reducing the transmittance of the ultraviolet light, so that the curing rate of the sealant layer decreases, thereby increasing the tensile strength of the sealant layer, thereby reducing the risk of film peeling when the display panel is pulled by external force, and further improving the water vapor protection capability of the display panel without using polytetrafluoroethylene modified materials, and reducing the production cost of the display panel.

[0056] In summary, although the present invention is disclosed as above with preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is based on the scope defined by the claims.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a frame area arranged around the display area, and the display panel further includes: An array substrate; an opposing substrate, arranged opposite to the array substrate; and A sealant layer is disposed between the array substrate and the counter substrate, and the sealant layer is disposed in the frame area; The display panel further comprises at least one filter portion, the orthographic projection of the sealant layer on the array substrate covers the orthographic projection of the filter portion on the array substrate, and the width of the filter portion is smaller than the width of the sealant layer.

2. The display panel according to claim 1, wherein: The filter portion is arranged on a side of the sealant layer close to the array substrate. The opposing substrate comprises a light shielding layer. The orthographic projection of the light shielding layer on the array substrate covers the orthographic projection of the sealant layer on the array substrate.

3. The display panel according to claim 2, wherein: The array substrate comprises a first substrate and a color filter layer. The color filter layer is arranged on a side of the first substrate close to the counter substrate. The filter portion is arranged on the same layer as the color filter layer.

4. The display panel according to claim 3, wherein: The color filter layer includes a red color resist, a green color resist and a blue color resist, and the filter portion is made of the same material as one of the red color resist, the green color resist and the blue color resist.

5. The display panel according to claim 3, wherein: The array substrate comprises a conductive layer, the conductive layer is arranged on a side of the first substrate close to the opposite substrate, the conductive layer comprises a plurality of signal wirings, and the signal wirings are arranged in the frame area; The light filtering part is arranged between the sealant layer and the conductive layer, and there is a light-transmitting gap between adjacent signal wirings, and the light filtering part is arranged in alignment with the light-transmitting gap.

6. The display panel according to claim 5, wherein: The width of the filter portion is greater than the line width of the signal line.

7. The display panel according to claim 5, wherein: The array substrate further includes: A first passivation layer is disposed on a side of the conductive layer away from the first substrate; a second passivation layer, disposed on a side of the first passivation layer away from the first substrate; Wherein, the filter part is arranged between the first passivation layer and the second passivation layer.

8. The display panel according to claim 1, wherein: The ratio of the width of the filter portion to the width of the sealant layer is greater than or equal to 1:10 and less than or equal to 3:

10.

9. The display panel according to claim 1, wherein: The display panel includes at least two filter parts, and the at least two filter parts are arranged in the frame area with an interval between them.

10. A display device, characterized in that: Comprising the display panel as claimed in any one of claims 1 to 9.

Images