Display device

Abstract

The utility model provides a display device which is provided with a display area, a peripheral area and a frame glue area. The display device comprises a substrate, a black matrix layer arranged on the substrate, a color filter layer arranged on the black matrix layer, a flat layer arranged on the color filter layer, a limiting unit arranged on the flat layer and an alignment layer arranged on the flat layer. Wherein in the direction from the frame glue area to the display area, the limiting unit comprises a first spacer, a second spacer and a third spacer, the first spacer has a first height and a first width, the second spacer has a second height and a second width, and the third spacer has a third height and a third width; the third height is larger than the second height, the ratio of the third height to the second height ranges from 1.13 to 1.3, the third width is larger than the second width, and the ratio of the third width to the second width ranges from 1 to 2.

Description

Technical Field

[0001] The utility model relates to the display field, in particular to a display device with a narrow frame. Background Art

[0002] With the development of science and technology, people's demand for electronic products is getting higher and higher. At present, the screen-to-body ratio of display panels in car displays, laptops or projectors is getting higher and higher, that is, the borders of display panels are getting narrower and narrower. Therefore, in the manufacturing process of display panels, it is necessary to reduce the border width of the display panel as much as possible while maintaining the yield.

[0003] See also Figure 1 , Figure 1 FIG. 1 is a schematic diagram of a structure of a display device in the prior art. Figure 1 As shown, the display panel 1 includes a display area 2, a peripheral area 3 surrounding the display area 2, and a frame glue area 4, in which a frame glue 5 is arranged, and the frame glue 5 surrounds the peripheral area 3. In the manufacturing process of the display panel, it is necessary to apply a layer of alignment liquid on the substrate 6 to form an alignment layer. When the alignment liquid is applied, the alignment liquid diffuses and flows from the display area 2 to the peripheral area 3. The frame width of the display panel 1 includes the distance between the edge of the display area 1 and the outer diffusion boundary of the alignment liquid, the distance between the outer diffusion boundary of the alignment liquid and the frame glue 5, and the width of the frame glue 5 itself, etc. Since the alignment liquid is physically coated, in order to avoid the alignment liquid overflowing to the frame glue 5 and causing the adhesive ability of the frame glue 5 to deteriorate, resulting in the frame glue 5 falling off and generating bubbles, it is generally necessary to set the distance between the outer diffusion boundary of the alignment liquid and the frame glue 5 to be greater than the coating accuracy of the alignment liquid. As a result, the frame of the display panel 1 cannot meet the trend of narrow frame.

[0004] Therefore, how to realize a display device with a narrow frame while maintaining a good visual effect of the display device is an urgent problem to be solved. Utility Model Content

[0005] The utility model provides a display device to solve the above technical problems.

[0006] In order to achieve the above-mentioned purpose, the utility model proposes a display device, which has a display area, a peripheral area and a frame glue area, the peripheral area is arranged between the display area and the frame glue area, and the peripheral area surrounds the display area, the display device includes a substrate, a black matrix layer, a color filter layer, a flat layer, a limiting unit and an alignment layer, the black matrix layer is arranged on the substrate; the color filter layer is arranged on the black matrix layer; the flat layer is arranged on the color filter layer; the limiting unit is arranged on the flat layer; the alignment layer is arranged on the flat layer; wherein, in the frame glue In the direction from the display area to the display area, the limiting unit includes a first spacer, a second spacer and a third spacer, the alignment layer extends from the display area to the peripheral area and does not exceed the first spacer, the first spacer has a first height and a first width, the second spacer has a second height and a second width, the third spacer has a third height and a third width, the third height is greater than the second height and the ratio of the third height to the second height is between 1.13 and 1.3, the third width is greater than the second width and the ratio of the third width to the second width is between 1 and 2.

[0007] As an optional technical solution, the first height of the first spacer is smaller than the second height of the second spacer and the first width of the first spacer is larger than the second width of the second spacer, or, the first height of the first spacer is larger than the second height of the second spacer and the first width of the first spacer is larger than the second width of the second spacer.

[0008] As an optional technical solution, when the first height of the first spacer is greater than the second height of the second spacer and the first width of the first spacer is greater than the second width of the second spacer, the first height is equal to the third height and the first width is equal to the third width.

[0009] As an optional technical solution, there is a first distance between the first spacer and the second spacer, and a second distance between the second spacer and the third spacer. The second distance is greater than the first distance and the ratio of the second distance to the first distance is between 1.5 and 3, or the second distance is equal to the first distance.

[0010] As an optional technical solution, there is a third distance between the first spacer and the frame glue, and the ratio of the third distance to the coating accuracy tolerance of the frame glue is between 0.66 and 1.33.

[0011] As an optional technical solution, when the first height of the first spacer is greater than the second height of the second spacer and the first width of the first spacer is greater than the second width of the second spacer, the first height is equal to the third height, the first width is equal to the third width, and the flat layer has a groove corresponding to the position of the first spacer, and the first spacer is located in the groove.

[0012] As an optional technical solution, the color filter layer is not arranged under the groove of the planar layer.

[0013] As an optional technical solution, the portion of the color filter layer located in the peripheral area is a plurality of dot-shaped color resists, and the plurality of dot-shaped color resists correspond one-to-one to the limiting units; the portion of the color filter layer located in the display area is a strip-shaped color resist.

[0014] As an optional technical solution, the display device further includes a frame glue, the frame glue is located in the frame glue area and surrounds the peripheral area, and the limiting unit is located between the frame glue area and the display area.

[0015] As an optional technical solution, the limiting unit further includes a fourth spacer and a fifth spacer, which are located on a side of the peripheral area close to the display area, and the portion of the color filter layer corresponding to the fourth spacer and the fifth spacer is a dot-shaped color resist.

[0016] The utility model provides a display device, wherein a plurality of spacers arranged at intervals are arranged on a flat layer on one side of a peripheral area of ​​the display device close to a frame glue area, and in the process of the alignment liquid diffusing and flowing from the display area to the peripheral area, the alignment liquid is restricted by the plurality of spacers so that the alignment liquid is concentrated on the display area, and overflow of the alignment liquid is avoided so that the display device needs to reserve sufficient size, resulting in a wider frame width of the display device. Furthermore, the height and width of the spacer on the side close to the display area are set larger so that the spacer has enough strength to block the overflow of the alignment liquid, thereby realizing a display device with a narrow frame while maintaining a good visual effect of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0018] Figure 1 It is a structural schematic diagram of a display device in the prior art;

[0019] Figure 2 It is a structural schematic diagram of a display device according to a first embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a display device according to a second embodiment of the utility model;

[0021] Figure 4 It is a schematic structural diagram of a display device according to a third embodiment of the utility model. DETAILED DESCRIPTION

[0022] In order to more clearly illustrate the utility model, the utility model is further described below in conjunction with preferred embodiments and drawings. Similar components in the drawings are represented by the same reference numerals. Those skilled in the art should understand that the content described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the utility model.

[0023] Please refer to Figure 2 , Figure 2 FIG. 1 is a schematic diagram showing the structure of a display device according to a first embodiment of the present invention. Figure 2 As shown, the utility model provides a display device 1000, which has a display area 100, a peripheral area 200 and a frame glue area 300, the peripheral area 200 is arranged between the display area 100 and the frame glue area 300, and the peripheral area 200 surrounds the display area 100, the display device 1000 includes a substrate 10, a black matrix layer 20, a color filter layer 30, a flat layer 40, a limiting unit 50 and an alignment layer 60, the black matrix layer 20 is arranged on the substrate 10; the color filter layer 30 is arranged on the black matrix layer 20; the flat layer 40 is arranged on the color filter layer 30; the limiting unit 50 is arranged on the flat layer 40; the alignment layer 60 is arranged on the flat layer 40; wherein, from the frame glue area 300 to In the direction of the display area 100, the limiting unit 50 includes a first spacer 51, a second spacer 52 and a third spacer 53 which are arranged in sequence. The alignment layer 60 extends from the display area 100 to the peripheral area 200 and does not exceed the first spacer 51. The first spacer 51 has a first height H1 and a first width W1. The second spacer 52 has a second height H2 and a second width W2. The third spacer 53 has a third height H3 and a third width W3. The third height H3 is greater than the second height H2 and the ratio of the third height H3 to the second height H2 is between 1.13 and 1.3. The third width W3 is greater than the second width W2 and the ratio of the third width W3 to the second width W2 is between 1 and 2.

[0024] In this embodiment, when manufacturing the display device 1000, the alignment liquid is coated on the flat layer 40, and the alignment liquid diffuses and flows from the display area 100 to the peripheral area 200, and after curing, it serves as the alignment layer 60. The display device 1000 also includes a sealant 70, which is located in the sealant area 300 of the display device 1000 and surrounds the display area 100, and the limiting unit 50 is located between the sealant area 300 and the display area 100. In practical applications, the display device 1000 may also include an upper substrate, and the upper substrate is bonded to the substrate 10 by the sealant 70.

[0025] like Figure 2As shown, the first height H1 of the first spacer 51 is smaller than the second height H2 of the second spacer 52, and the first width W1 of the first spacer 51 is larger than the second width W2 of the second spacer 52. That is to say, in the direction from the frame glue area 300 to the display area 100, the heights of the first spacer 51, the second spacer 52 and the third spacer 53 of the limiting unit 50 increase successively, so that the third spacer 53 closest to the display area 100 has sufficient strength to block the flow of the alignment liquid.

[0026] In this embodiment, there is a first spacing D1 between the first spacer 51 and the second spacer 52, and there is a second spacing D2 between the second spacer 52 and the third spacer 53. The second spacing D2 is greater than the first spacing D1, and the ratio of the second spacing D2 to the first spacing D1 is between 1.5 and 3. Preferably, the first spacing D1 is between 50um and 80um, and the second spacing D2 is between 120um and 150um. By setting the second spacing D2 larger, when the alignment liquid is applied to form the alignment layer 60, in the process of the alignment liquid diffusing and flowing from the display area 100 to the peripheral area 200, the alignment liquid first passes through the third spacer 53, and then passes through the third spacer 53. The excess alignment liquid overflowing from the display area 100 is blocked. If the alignment liquid still partially overflows after being blocked by the third spacer 53, the overflowed alignment liquid reaches the second spacer 52 and then is blocked by the second spacer 52. Since the second spacing D2 is large, after the alignment liquid overflows from the third spacer 53, there is enough accommodation space between the second spacer 52 and the third spacer 53 to block the alignment liquid from continuing to spread to the first spacer 51. This can better prevent the alignment liquid from overflowing to the peripheral area 200, resulting in a larger width for the frame of the display device 1000, reducing the frame size, and also preventing the alignment liquid from overflowing to the frame glue 70 and causing the frame glue 70 to deteriorate in adhesion performance. In another embodiment, the first spacing D1 and the second spacing D2 can also be equal, and can be set according to actual needs. There is a third distance D3 between the first spacer 51 and the sealant 70 , and the ratio of the third distance D3 to the coating accuracy tolerance of the sealant 70 is between 0.66 and 1.33. Preferably, for example, if the coating accuracy tolerance of the sealant 70 is 150 um, the third distance D3 is between 100 um and 200 um.

[0027] In this embodiment, the flat layer 40 is disposed between the limiting unit 50 and the color filter layer 30, so that the surface is uniform. When manufacturing the display device 1000, the limiting unit 50 can be made of the same material as the flat layer 40, or the limiting unit 50 can be completed in the same process as the flat layer 40, simplifying the process steps. The color filter layer 30 includes dot-shaped color resists and strip-shaped color resists. The portion of the color filter layer 30 located in the peripheral area 200 is a plurality of dot-shaped color resists, and the plurality of strip-shaped color resists correspond to each spacer in the limiting unit 50, that is, a dot-shaped color resist is disposed under each of the first spacer 51, the second spacer 52, and the third spacer 53, and the portion of the color filter layer 30 corresponding to the display area 100 is a strip-shaped color resist. In this embodiment, the limiting unit 50 further includes a fourth spacer 54 and a fifth spacer 55. The fourth spacer 54 and the fifth spacer 55 are located on the side of the peripheral area 200 close to the display area 100. The fourth spacer 54 and the fifth spacer 55 are used to initially block the alignment liquid. The portion of the color filter layer 30 corresponding to the fourth spacer 54 and the fifth spacer 55 is also a dot-shaped color block.

[0028] The display device 1000 of the present invention can effectively block the alignment liquid by setting the limiting units 50 with increasing heights on the flat layer 40 in the direction from the frame glue area 300 to the display area 100, so that the alignment liquid is concentrated to the display area 100 to avoid overflow of the alignment liquid.

[0029] In practical applications, in the direction from the frame glue area 300 to the display area 100, the heights of the first spacer 51, the second spacer 52 and the third spacer 53 may also decrease in sequence, as long as the effect of blocking the alignment liquid can be achieved. At the same time, the limiting unit 50 is not limited to including three spacers, and more than or equal to two spacers can be set according to actual needs.

[0030] See also Figure 3 , Figure 3 FIG. 2 is a schematic diagram of the structure of a display device according to a second embodiment of the present invention. In this embodiment, the structures of the second spacer 52 and the third spacer 53 are the same as those of the first embodiment. Figure 3As shown, the first height H1 of the first spacer 51 is greater than the second height H2 of the second spacer, and the first width W1 of the first spacer 51 is greater than the second width W2 of the second spacer 52. At this time, the first height H1 and the first width W1 of the first spacer 51 are the same as the third height H3 and the third width W3 of the third spacer 53, and are both greater than the second height H2 and the second width W2 of the second spacer 52, so that the limiting unit 50 as a whole presents a structure with a low middle and high sides, wherein the ratio of the first height H1 to the second height H2 is between 1.13 and 1.3, the ratio of the first width W to the second width W2 is between 1 and 2, and the first spacing D1 is equal to the second spacing D2, so that the three spacers are symmetrically arranged about the second spacer 52.

[0031] like Figure 3 As shown, preferably, the first spacing D1 and the second spacing D2 are both between 80um and 100um, and the ratio of the third spacing D3 to the coating accuracy tolerance of the sealant 70 is between 0.66 and 1.33. Preferably, the coating accuracy tolerance of the sealant 70 is 150um, and the third spacing D3 is between 100um and 200um, so that the third spacer 53 can effectively block the alignment liquid while the first spacer 51 can also effectively block the sealant 70 to prevent the sealant 70 from overflowing into the peripheral area 200. In actual applications, the setting of the first spacing D1 and the second spacing D2 can also be the same as the first embodiment, that is, the second spacing D2 is greater than the first spacing D1, and can be set according to actual needs.

[0032] See also Figure 4 , Figure 4 FIG. 1 is a schematic diagram showing the structure of a display device according to a third embodiment of the present utility model. Figure 4 As shown, the structures of the first spacer 51, the second spacer 52 and the third spacer 53 are the same as those of the second embodiment. On the basis of the second embodiment, the flat layer 40 has a groove 41 at the position corresponding to the first spacer 51, the first spacer 51 is located in the groove 41, and the color filter layer 30 is not arranged under the first spacer 51.

[0033] In actual applications, it is difficult to produce multiple spacers of different heights when producing the limiting unit 50. Generally speaking, the limiting unit 50 only includes two spacers of different heights, that is, the first spacer 51 and the third spacer 53 are main spacers (i.e., they are of higher height), and the second spacer 52, the fourth spacer 54 and the fifth spacer 55 are auxiliary spacers (i.e., they are of lower height). At this time, the first spacer 51 is disposed in the groove 41 of the flat layer 40, so that in the direction from the frame glue area 300 to the display area 100, the heights of the first spacer 51, the second spacer 52 and the third spacer 53 can still present a structure of increasing in sequence, so that the first spacer 51 can effectively block the alignment liquid. At the same time, since the width of the groove 41 is greater than the width W1 of the first retaining wall 51, the groove 41 can also accommodate overflowed alignment liquid or frame glue 70, thereby improving the blocking ability of the alignment liquid or frame glue 70. Likewise, the second spacing D2 may be greater than the first spacing D1, or the second spacing D2 may be equal to the first spacing D1, and the arrangement may be performed according to actual needs.

[0034] In summary, the utility model provides a display device, in which a plurality of spacers arranged at intervals are arranged on a flat layer on one side of a peripheral area of ​​the display device close to a frame glue area. In the process of diffusion and flow of the alignment liquid from the display area to the peripheral area, the alignment liquid is restricted by the plurality of spacers so that the alignment liquid is concentrated in the display area, thereby avoiding overflow of the alignment liquid so that the display device needs to reserve sufficient size, resulting in a wider frame width of the display device. Furthermore, the height and width of the spacers on the side close to the display area are set larger so that the spacers have sufficient strength to block the overflow of the alignment liquid, thereby achieving a narrow-frame display device while maintaining a good visual effect of the display device.

[0035] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A display device, comprising a display area, a peripheral area and a frame glue area, wherein the peripheral area is arranged between the display area and the frame glue area, and the peripheral area surrounds the display area, characterized in that: The display device comprises: substrate; A black matrix layer is disposed on the substrate; A color filter layer is disposed on the black matrix layer; A flat layer is disposed on the color filter layer; A limiting unit is disposed on the flat layer; as well as An alignment layer is disposed on the planar layer; Wherein, in the direction from the frame glue area to the display area, the limiting unit includes a first spacer, a second spacer and a third spacer, the orientation layer extends from the display area to the peripheral area and does not exceed the first spacer, the first spacer has a first height and a first width, the second spacer has a second height and a second width, the third spacer has a third height and a third width, the third height is greater than the second height and the ratio of the third height to the second height is between 1.13 and 1.3, the third width is greater than the second width and the ratio of the third width to the second width is between 1 and 2.

2. The display device according to claim 1, characterized in that The first height of the first spacer is smaller than the second height of the second spacer and the first width of the first spacer is larger than the second width of the second spacer, or the first height of the first spacer is larger than the second height of the second spacer and the first width of the first spacer is larger than the second width of the second spacer.

3. The display device according to claim 2, characterized in that: When the first height of the first spacer is greater than the second height of the second spacer and the first width of the first spacer is greater than the second width of the second spacer, the first height is equal to the third height, and the first width is equal to the third width.

4. The display device according to claim 1, characterized in that There is a first distance between the first spacer and the second spacer, and there is a second distance between the second spacer and the third spacer. The second distance is greater than the first distance and the ratio of the second distance to the first distance is between 1.5 and 3, or the second distance is equal to the first distance.

5. The display device according to claim 1, characterized in that A third distance is provided between the first spacer and the sealant, and a ratio of the third distance to a coating accuracy tolerance of the sealant is between 0.66 and 1.

33.

6. The display device according to claim 2, characterized in that: When the first height of the first spacer is greater than the second height of the second spacer and the first width of the first spacer is greater than the second width of the second spacer, the first height is equal to the third height, the first width is equal to the third width, and the flat layer has a groove at a position corresponding to the first spacer, and the first spacer is located in the groove.

7. The display device according to claim 6, characterized in that: The color filter layer is not disposed under the groove of the planar layer.

8. The display device according to claim 1, characterized in that: The portion of the color filter layer located in the peripheral area is a plurality of dot-shaped color resists, and the plurality of dot-shaped color resists correspond to the limiting units one by one; the portion of the color filter layer located in the display area is a strip-shaped color resist.

9. The display device according to claim 1, characterized in that: The display device further comprises a frame glue, the frame glue is located in the frame glue area and surrounds the peripheral area, and the limiting unit is located between the frame glue area and the display area.

10. The display device according to claim 1, characterized in that: The limiting unit further includes a fourth spacer and a fifth spacer, the fourth spacer and the fifth spacer are located on a side of the peripheral area close to the display area, and the portion of the color filter layer corresponding to the fourth spacer and the fifth spacer is a dot-shaped color resistance.

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