TWI780686B - Display panel - Google Patents

Abstract

The invention provides a display panel, which includes a first substrate, a flat layer, a groove, a second substrate and a sealant. The first substrate has a peripheral area and a display area adjacently arrange and the display area is provided with a plurality of pixel units. The flat layer is disposed on the first substrate and covers the display area and the peripheral area. The trench is provided on the flat layer. The second substrate is opposite to the first substrate. The sealant is disposed between the first substrate and the second substrate and the sealant surrounds the display area and the sealant includes an overlapping area. Wherein, the position of the groove corresponds to the position of the overlap area, and the projection area of the groove on the first substrate completely overlaps the projection area of the overlap area on the first substrate.

Description

display panel

The present invention relates to a display panel, and in particular to a display panel capable of adapting to narrow frame requirements.

With the development of technology, display panels are widely used in many electronic products, such as mobile phones, tablet computers, watches and so on. Moreover, the development of narrow-frame display panels is becoming more and more rapid.

In the existing display panels, due to the demand for narrow bezels, the lower bezels are becoming narrower and narrower. Usually, a frame glue is formed in the display panel, and two sections of frame glue will form an overlapping area. When the two substrates of the display panel are combined, because the lower frame is getting narrower, the laminated frame glue will overflow upwards to the display area on the one hand. , causing the pixel units in the display area to be affected, and on the other hand, it will overflow to the OLB area, affect the control circuit in the OLB area, and affect the cutting of the upper substrate in the next step.

Therefore, how to better avoid the large width difference of the sealant during the pressing process of the substrates is actually one of the problems to be solved.

The embodiment of the present invention provides a display panel, which can better avoid the large width difference of the frame glue in the display panel during the substrate pressing process, reduce the impact of the overflow frame glue on the display area and the OLB area, and improve the qualification of the product Rate.

A display panel according to an embodiment of the present invention includes a first substrate, which has a peripheral area and a display area adjacently arranged, and the display area is provided with a plurality of pixel units; a flat layer is arranged on the first substrate and covers the The display area and the peripheral area; a groove disposed on the flat layer; a second substrate disposed opposite to the first substrate; a sealant disposed between the first substrate and the second substrate, and The sealant is disposed on the peripheral area and surrounds the display area, and the sealant includes an overlapping area; wherein, the position of the groove corresponds to the position of the overlapping area, and the projected area of the groove on the first substrate It completely overlaps with the projected area of the overlapping area on the first substrate.

In the above display panel, the sealant has a first width W1 in the overlapping area, and the sealant has a second width W2 outside the overlapping area, wherein W1>W2.

In the above display panel, the groove has a third width W3, wherein 50µm≤(W2-W3)≤100µm.

In the above display panel, the sealant has a side portion and a corner portion, wherein the overlapping area is disposed on the side portion or the corner portion.

In the above-mentioned display panel, wherein, the overlapping area includes a first overlapping area, the first overlapping area is disposed at the corner, the groove includes a first groove, and the first groove is opposite to the first overlapping area Correspondingly, and the first groove is L-shaped.

In the above display panel, the first groove has a vertex angle, and the vertex angle is set towards the display area.

The display panel above, wherein, the overlapping region includes a second overlapping region, the second overlapping region is disposed on the side portion, the groove includes a second groove, and the second groove and the second overlapping region Correspondingly, wherein, the second groove is rectangular, elliptical or cross-shaped.

In the above display panel, the number of the first overlapping regions is multiple.

In the above display panel, the number of the second overlapping regions is multiple.

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

The structural principle and working principle of the present invention will be specifically described below in conjunction with the accompanying drawings.

FIG. 1A is a schematic structural diagram of a display panel according to an embodiment of the present invention. Fig. 1B is a cross-sectional view of Fig. 1A along section line A-A'. Fig. 1C is a sectional view of Fig. 1A along the section line B-B'.

As shown in FIG. 1A , the display panel 100 includes a first substrate 101 and a second substrate 104 , and the first substrate 101 and the second substrate 104 are disposed opposite to each other. In this embodiment, the first substrate 101 has an adjacent display area AA and a peripheral area BA. A plurality of pixel units (not shown in the figure) are arranged in the display area AA, and the plurality of pixel units are arranged in an array. Multiple columns are arranged along the first direction (such as the X direction), and multiple rows are arranged along the second direction (such as the Y direction).

Referring again to FIG. 1B and FIG. 1C , a flat layer 102 is further disposed on the first substrate 101 , and the flat layer 102 covers the display area AA and the peripheral area BA. A sealant 105 is disposed between the first substrate 101 and the second substrate 104 , the sealant 105 is disposed on the peripheral area BA and surrounds the display area AA, and an overlapping area 106 is formed in the sealant 105 . At the position corresponding to the overlapping area 106, the flat layer 102 is provided with a groove 103, and the projection area of the groove 103 on the first substrate 101 is covered by the projection area of the overlapping area 106 on the first substrate 101, that is, the groove The projection area of the groove 103 on the first substrate 101 completely overlaps the projection area of the overlapping area 106 on the first substrate 101 . When the first substrate 101 and the second substrate 104 are pressed, the sealant 105 in the overlapping area 106 will flow into the groove 103, and the groove 103 is used to accommodate part of the sealant 105, so that after lamination, the overlapping area The width of 106 can be controlled so as not to overflow to the display area and the OLB area.

Specifically, as shown in FIGS. 1B and 1C , the sealant 105 has a first width W1 in the overlapping region 106 and a second width W2 outside the overlapping region 106 , wherein W1>W2. The trench 103 has a third width W3, wherein 50µm≦(W2−W3)≦100µm. It has been verified by experiments that when (W2-W3) is less than 50µm, the frame glue 105 cannot be effectively covered due to the coating accuracy of the frame glue process and the glue width control ability. When (W2-W3) is greater than 100µm, due to the width of the overlapping area 106 If W2 is too large, it cannot meet the requirements of narrow bezels.

FIG. 2 is a schematic structural diagram of a display panel according to another embodiment of the present invention. FIG. 3 is a schematic diagram of the shape of the groove in the display panel of the present invention. As shown in FIG. 2 and FIG. 3 , the sealant 105 in the display panel 100 of the present invention has a side portion 107 and a corner portion 108, the side portion 107 is connected to the corner portion 108, and the overlapping area 106 can be set on the side portion 107 or set at corner 108 . Specifically, the overlapping region 106 further includes a plurality of first overlapping regions 1061, and the plurality of first overlapping regions 1061 are respectively arranged at the corners 108, and the groove 103 further includes a plurality of first grooves 1031, and the plurality of first grooves 1031 Corresponding to the positions of the multiple first overlapping areas 1061 respectively. The overlapping region 106 further includes a plurality of second overlapping regions 1062, and the plurality of second overlapping regions 1062 are disposed on the side portion 107. The groove 103 further includes a plurality of second grooves 1032, and the plurality of second grooves 1032 and the plurality of The positions of the second overlapping area 1062 are corresponding. The first groove 1031 can be arranged in an L shape, and the L-shaped first groove 1031 has a top angle C. Considering the coverage of the sealant 105 at corners, the top angle C is preferably facing the display area AA. The second groove 1032 can be configured as a rectangle, an ellipse or a cross.

To sum up, according to the embodiment of the present invention, since the groove is provided in the flat layer, the groove can accommodate part of the sealant, so that the sealant in the overlapping area can flow into the groove during the process of pressing the substrate, avoiding the width of the overlapping area It becomes larger and flows into the display area or OLB area, improving the yield of products. In addition, according to the embodiments of the present invention, with the design of grooves in the flat layer, layout can be made according to requirements, for example, it can be applied to ultra-thin liquid crystal panels, ultra-wide color gamut liquid crystal panels or automotive liquid crystal panels, etc., but not limited thereto .

Certainly, the present invention also can have other multiple embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and All deformations shall belong to the protection scope of the appended claims of the present invention.

100: display panel 101: The first substrate 102: flat layer 103: Groove 1031: the first groove 1032: the second groove 104: Second substrate 105: frame glue 106: Overlapping area 1061: The first overlapping area 1062: the second overlapping area 107: side part 108: corner AA: display area BA: Surrounding area C: top corner W1, W2, W3: width

FIG. 1A is a schematic structural diagram of a display panel according to an embodiment of the present invention. Fig. 1B is a cross-sectional view of Fig. 1A along section line A-A'. Fig. 1C is a sectional view of Fig. 1A along the section line B-B'. FIG. 2 is a schematic structural diagram of a display panel according to another embodiment of the present invention. FIG. 3 is a schematic diagram of the shape of the groove in the display panel of the present invention.

100: display panel

101: The first substrate

103: Groove

104: Second substrate

105: frame glue

106: Overlapping area

AA: display area

BA: Surrounding area

Claims (7)

A display panel, comprising: a first substrate with a peripheral area and a display area adjacently arranged, and the display area is provided with a plurality of pixel units; a flat layer is arranged on the first substrate and covers the display area and the display area The peripheral area; a groove, arranged on the flat layer; a second substrate, arranged opposite to the first substrate; and a sealant, arranged between the first substrate and the second substrate, and the sealant Set on the peripheral area and surrounding the display area, the sealant includes an overlapping area, the sealant has a side portion and a corner, wherein, the overlapping area includes a first overlapping area, and the first overlapping area is disposed on The corner, the groove includes a first groove, the first groove corresponds to the first overlapping area, and the first groove is L-shaped; wherein, the position of the groove is the same as that of the overlapping area The positions are corresponding, and the projected area of the groove on the first substrate completely overlaps with the projected area of the overlapping area on the first substrate. A display panel, comprising: a first substrate with a peripheral area and a display area adjacently arranged, and the display area is provided with a plurality of pixel units; a flat layer is arranged on the first substrate and covers the display area and the display area the peripheral area; a groove disposed on the planar layer; a second substrate disposed opposite to the first substrate; and A frame glue is arranged between the first substrate and the second substrate, and the frame glue is arranged on the peripheral area and surrounds the display area, the frame glue includes an overlapping area, the frame glue has a side edge and a corner portion, wherein the overlapping region includes a second overlapping region disposed on the side portion, the groove includes a second groove corresponding to the second overlapping region, Wherein, the second groove is rectangular, elliptical or cross-shaped; wherein, the position of the groove corresponds to the position of the overlapping area, and the projected area of the groove on the first substrate and the overlapping area are at The projected areas on the first substrate completely overlap. The display panel according to claim 1 or 2, wherein the sealant has a first width W1 in the overlapping area, and the sealant has a second width W2 outside the overlapping area, wherein W1>W2. The display panel as claimed in claim 3, wherein the groove has a third width W3, wherein, 50 μm

(W2-W3)

100 μm. The display panel as claimed in claim 1, wherein the first groove has a top angle, and the top angle is set towards the display area. The display panel as claimed in item 1, wherein the number of the first overlapping regions is multiple. The display panel according to claim 2, wherein the number of the second overlapping regions is multiple.

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