TWI754514B - Display apparatus - Google Patents

Abstract

A display apparatus includes a first substrate, pixel structures, a second substrate, a display medium and a side sealant. The pixel structures are disposed on the first substrate. The second substrate is disposed opposite to the first substrate. The display medium is disposed between the first substrate and the second substrate. The side sealant includes a first portion disposed on a side wall of the first substrate, a second portion disposed on a side wall of the second substrate and a third portion disposed between the first portion and the second portion. The third portion has a flat surface facing away from the side wall of the first substrate and the side wall of the second substrate. A thickness of the first portion in a first direction decreases with distance from the third portion. A thickness of the second portion in the first direction decreases with distance from the third portion. The first direction is substantially perpendicular to the sidewall of the first substrate.

Description

display device

The present invention relates to a display device.

With the development of display technology, people's demands for display devices are no longer satisfied with optical characteristics such as high resolution, high contrast, and wide viewing angle. People also expect display devices to have an elegant appearance. For example, display devices are expected to have narrow bezels.

Generally speaking, a display device includes a pixel array substrate, an opposite substrate, and a sealant for connecting the pixel array substrate and the opposite substrate. However, limited by the capability of the sealant coating machine, such as the line width of the sealant coating and the positional accuracy of the sealant coating, the frame of the display device cannot be further reduced.

The present invention provides a display device with an ultra-narrow frame.

The display device of the present invention includes a first substrate, a plurality of pixel structures, a second substrate, a display medium and a side sealant. A plurality of pixel structures are disposed on the first substrate. The second base is arranged opposite to the first base. The display medium is disposed between the first substrate and the second substrate. The side sealant comprises a first part disposed on the sidewall of the first substrate, a second part disposed on the sidewall of the second substrate, and a third part disposed between the first part and the second part. The third portion has a plane facing away from the sidewall of the first base and the sidewall of the second base. The thickness of the first portion in the first direction decreases away from the third portion. The thickness of the second portion in the first direction decreases away from the third portion. The first direction is substantially perpendicular to the sidewall of the first substrate.

Reference will now be made in detail to the exemplary embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numerals are used in the drawings and description to refer to the same or like parts.

It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to a physical and/or electrical connection. Furthermore, "electrically connected" or "coupled" may refer to the existence of other elements between the two elements.

As used herein, "about," "approximately," or "substantially" includes the stated value and the average within an acceptable deviation from the particular value as determined by one of ordinary skill in the art, given the measurement in question and the A specific amount of measurement-related error (ie, the limitations of the measurement system). For example, "about" can mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, as used herein, "about", "approximately" or "substantially" may be used to select a more acceptable range of deviation or standard deviation depending on optical properties, etching properties or other properties, and not one standard deviation may apply to all properties. .

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be construed as having meanings consistent with their meanings in the context of the related art and the present invention, and are not to be construed as idealized or excessive Formal meaning, unless expressly defined as such herein.

1A to 1F are schematic cross-sectional views of a manufacturing process of a display device 10 according to an embodiment of the present invention.

FIG. 2 is a schematic top view of a display panel DP according to an embodiment of the present invention. FIG. 2 omits the illustration of the display medium 3 .

FIG. 3 is a schematic top view of the display device 10 according to an embodiment of the present invention. FIG. 3 omits the illustration of the medium 3 and the waterproof layer 6 .

Please refer to FIG. 1A and FIG. 2 , first, a display panel (display panel) DP is provided. The display panel DP includes a pixel array substrate 1 , an opposite substrate 2 and a display medium 3 . The pixel array substrate 1 includes a first substrate 110 and a plurality of pixel structures SPX disposed on the first substrate 110 . The opposite substrate 2 includes a second base 210 . The second substrate 210 is disposed opposite to the first substrate 110 . The display medium 3 is disposed between the first substrate 110 and the second substrate 210 .

Specifically, in this embodiment, the display panel DP further includes a sealant 4; the pixel array substrate 1 has a display area 1a and a peripheral area 1b around the display area 1a, and a plurality of pixel structures SPX are located on the pixel array substrate 1; the opposite substrate 2 has a display area 2a and a peripheral area 2b, respectively overlapping the display area 1a and peripheral area 1b of the pixel array substrate 1; the sealant 4 is arranged on the peripheral area 1b of the pixel array substrate 1 The display medium 3 is disposed in a space surrounded by the pixel array substrate 1 , the opposite substrate 2 and the sealant 4 between the peripheral region 2 b of the opposite substrate 2 .

In this embodiment, each pixel structure SPX may include an active element (eg, thin film transistor; not shown) and a pixel electrode PE electrically connected to the active element. In this embodiment, the pixel array substrate 1 further includes a plurality of data lines DL (drawn in FIG. 2 ) and a plurality of gate lines GL (drawn in FIG. 2 ) disposed on the first substrate 110 , wherein a plurality of data lines The lines DL are arranged in the third direction d3, the plurality of gate lines GL are arranged in the fourth direction d4, and the third direction d3 and the fourth direction d4 are staggered (for example, but not limited to: vertical). The plurality of pixel structures SPX are electrically connected to the plurality of data lines DL and the plurality of gate lines GL. In this embodiment, the pixel array substrate 1 may optionally further include a plurality of patch cords gl interspersed between the multiple pixel structures SPX, and the multiple patch cords gl are disposed on the first substrate 110 and located on the first substrate 110 . Arranged in the third direction d3, the plurality of transition lines gl are electrically connected to the plurality of gate lines GL.

Referring to FIGS. 1A , 1B and 2 , in order to realize a display device with an ultra-narrow bezel, a part of the peripheral area 1 b of the pixel array substrate 1 , a part of the peripheral area 2 b of the opposite substrate 2 , and a part of the peripheral area 2 b of the pixel array substrate 1 are removed and disposed on the two A part of the sealant 4 between them, wherein when the part of the peripheral region 1b of the pixel array substrate 1 is removed, the side wall 110s of the first substrate 110 of the pixel array substrate 1 is formed; the opposite substrate 2 is removed; When the portion of the peripheral region 2b is formed, the side wall 210s of the second substrate 210 of the opposite substrate 2 is formed.

Referring to FIG. 2, in this embodiment, the peripheral region 1b of the pixel array substrate 1 includes a bonding side 1b-1 and non-bonding sides 1b-2, 1b-3, 1b-4, wherein the bonding side 1b-1 is provided with There are a plurality of pads (not shown) electrically connected to the plurality of pixel structures SPX, and the pads are used for electrical connection with the driving element 7 (shown in FIG. 3 ); the peripheral area 2 b of the opposite substrate 2 includes The non-bonding sides 2b-2, 2b-3, and 2b-4 overlap with the non-bonding sides 1b-2, 1b-3, and 1b-4 of the peripheral region 1b of the pixel array substrate 1, respectively.

Referring to FIGS. 2 and 3 , for example, in this embodiment, a part of the non-bonding side 1 b - 3 , a part of the non-bonding side 1 b - 4 and the non-bonding side 1 b - 4 of the peripheral region 1 b of the pixel array substrate 1 can be removed. A part of the side 1b-2 is bonded to form a first sub-sidewall 110s-3, a first sub-sidewall 110s-4 and a second sub-sidewall 110s-2 of the sidewall 110s of the first substrate 110, wherein a plurality of first sub-sidewalls 110s -3, 110s-4 respectively define a plurality of first edges 110e-3, 110e-4 of the first substrate 110, a plurality of first edges 110e-3, 110e-4 and a plurality of data lines DL are in the third direction d3 Arranged, the second sub-sidewall 110s-2 defines the second edge 110e-2 of the first substrate 110, and the second edge 110e-2 and the plurality of gate lines GL are arranged in the fourth direction d4.

In addition, in this embodiment, a part of the non-bonding side 2b-2, a part of the non-bonding side 2b-3 and a part of the non-bonding side 2b-4 of the peripheral region 2b of the opposite substrate 2 can also be removed to separate The first sub-sidewall 210s-3, the first sub-sidewall 210s-4, and the second sub-sidewall 210s-2 (marked in FIG. 3) of the sidewall 210s of the second substrate 210 are formed; Part of the sealant 4-2, 4-3 between the non-bonding sides 1b-2, 1b-3, 1b-4 of the substrate 1 and the non-bonding sides 2b-2, 2b-3, 2b-4 of the opposite substrate 2 , 4-4, while retaining part of the sealant 4-1 on the bonding side 1b-1, wherein the end point 4-1a of the retained part of the sealant 4-1 and the first sub-surface of the side wall 110s of the first substrate 110 The side walls 110s-3, 110s-4 are substantially flush.

Referring to FIG. 1C , then, when the upper and lower parts of the tool P (eg, the upper indenter and the lower platform) press and hold the display panel DP to prevent foreign substances (eg, air, etc.) from entering the interior of the display panel DP, The side sealant 5 is formed on the sidewall 110s of the first substrate 110 and the sidewall 210s of the second substrate 210 .

1C and FIG. 3 , for example, in this embodiment, the first sub-sidewall 110s-3 of the first substrate 110, the first sub-sidewall 210s-3 of the second substrate 210, and the first substrate 110 The first sub-sidewall 110s-4 of the second substrate 210, the first sub-sidewall 210s-4 of the second substrate 210, the second sub-sidewall 110s-2 of the first substrate 110 and the second sub-sidewall 210s-2 of the second substrate 210 form side Edge sealant 5. In short, in this embodiment, the display panel DP is, for example, a rectangle, and the side sealant 5 can be formed on two opposite short sides and one long side of the non-joining side of the display panel DP. However, the present invention is not limited to this, and the formation position of the side sealant 5 can be adjusted according to actual needs.

Referring to FIG. 1C , in this embodiment, the sealants 4 - 2 , 4 - 3 , and 4 - 4 are partially removed before the side walls 110 s of the first substrate 110 and the side walls 210 s of the second substrate 210 are removed. The side sealant 5 is formed, so the side sealant 5 can be in contact with the display medium 3 , but the invention is not limited to this.

Referring to FIGS. 1D and 1E , the side sealant 5 includes a first part 5 - 1 , a second part 5 - 2 and a third part 5 - 3 , wherein the first part 5 - 1 is disposed on the sidewall of the first substrate 110 On 110s, the second part 5-2 is disposed on the side wall 210s of the second substrate 210, and the third part 5-3 is disposed between the first part 5-1 and the second part 5-2.

Referring to FIG. 1D and FIG. 1E , next, a grinding process is performed on the side sealant 5 . Referring to FIG. 1E, after the grinding process is completed, the third portion 5-3 of the side sealant 5 has a flat surface 5-3a facing away from the sidewall 110s of the first substrate 110 and the sidewall 210s of the second substrate 210. The thickness T1 of the first part 5-1 of the glue 5 in the first direction d1 decreases as it moves away from the third part 5-3 of the side sealant 5, and the second part 5-2 of the side sealant 5 is at the third part 5-2 of the side sealant 5. The thickness T2 in a direction d1 decreases as it moves away from the third portion 5 - 3 of the side sealant 5 , wherein the first direction d1 is substantially perpendicular to the sidewall 110 s of the first substrate 110 . For example, in this embodiment, the cross section of the side sealant 5 on a plane perpendicular to the first substrate 110 (eg, the paper plane of FIG. 1E ) includes a trapezoid, but the invention is not limited to this.

Referring to FIG. 1F , a waterproof layer 6 is formed on the side sealant 5 , thereby completing the display device 10 of the present embodiment. The waterproof layer 6 is disposed on the side sealant 5 , wherein the side sealant 5 is located between the waterproof layer 6 and the sidewall 110s of the first substrate 110 and between the waterproof layer 6 and the sidewall 210s of the second substrate 210 .

For example, in this embodiment, the waterproof layer 6 can be formed by coating. The waterproof layer 6 has a surface 6a that overlaps with the plane 5-3a of the side sealant 5, and the surface 6a of the waterproof layer 6 is Convex. That is to say, in this embodiment, the waterproof layer 6 may be non-conformally disposed on the side sealant 5, but the present invention is not limited to this. In this embodiment, the material of the waterproof layer 6 is, for example, polyurethane (PU), silicone glue, epoxy resin (Epoxy), silicon oxide (SiOx), fluorine-containing polymer or other suitable materials.

It is worth mentioning that, in this embodiment, a part of the peripheral area 1b of the pixel array substrate 1, a part of the peripheral area 2b of the opposite substrate 2, and part of the sealant 4- between the two are removed. After 2, 4-3, and 4-4, the side sealant 5 is formed on the sidewall 110s of the first substrate 110 and the sidewall 210s of the second substrate 210, so the width W of the frame of the display device 10 (marked in FIG. 3 ) is not limited by the capability of the machine for coating the sealant 4, and can realize the display device 10 with an ultra-narrow bezel.

It must be noted here that the following embodiments use the element numbers and part of the contents of the previous embodiments, wherein the same numbers are used to represent the same or similar elements, and the description of the same technical contents is omitted. For the description of the omitted part, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

FIG. 4 is a schematic cross-sectional view of a display device 10A according to an embodiment of the present invention. The display device 10A of FIG. 4 is similar to the display device 10 of FIG. 1F , and the main difference between the two is that the methods of forming the waterproof layer 6 are different.

Please refer to FIG. 4 , specifically, in this embodiment, the waterproof layer 6 can be formed by means of thin film encapsulation (TFE), and the waterproof layer 6 is substantially conformally disposed on the side sealant 5 . That is to say, the waterproof layer 6 has a surface 6a overlapping with the plane 5-3a of the side sealant 5, and the surface 6a is a plane substantially parallel to the plane 5-3a of the side sealant 5. For example, in this embodiment, the material of the waterproof layer 6 may be parylene or other suitable materials.

FIG. 5 is a schematic cross-sectional view of a display device 10B according to an embodiment of the present invention.

FIG. 6 is a schematic top view of a display device 10B according to an embodiment of the present invention. FIG. 3 omits the illustration of the medium 3 and the waterproof layer 6 .

The display device 10B of FIGS. 5 and 6 is similar to the display device 10 of FIGS. 1F and 3 , and the main difference between the two is that the display device 10B of FIGS. 5 and 6 further includes a retaining wall structure 8 .

Referring to FIG. 5 , in this embodiment, the side sealant 5 further includes a fourth portion 5 - 4 , which is disposed between the first substrate 110 and the second substrate 210 (ie, the peripheral region 1 b of the pixel array substrate 1 and the peripheral region 1 b of the pixel array substrate 1 ). Between the peripheral regions 2b of the opposite substrate 2, the first substrate 110, the fourth portion 5-4 of the side sealant 5, and the second substrate 210 are arranged in sequence in the second direction d2, and the first direction d1 and The second direction d2 is substantially vertical.

Referring to FIGS. 5 and 6 , in this embodiment, the display device 10B further includes a blocking wall structure 8 , which is disposed on one of the first substrate 110 and the second substrate 210 and abuts against the first substrate 110 and the second substrate 210 . On the other side of the substrate 210 , in the top view of the display device 10B, the retaining wall structure 8 is located between the plurality of pixel structures SPX and the side sealant 5 . The retaining wall structure 8 can prevent part of the side sealant 5 (ie, the fourth part 5 - 4 of the side sealant 5 ) infiltrating between the pixel array substrate 1 and the opposite substrate 2 from entering the display areas 1 a and 1 of the display device 10B. 2a while the display device 10B affects the display quality.

FIG. 7 is a schematic top view of a display device 10C according to an embodiment of the present invention. FIG. 7 omits the illustration of the medium 3 and the waterproof layer 6 .

The display device 10C of FIG. 7 is similar to the display device 10 of FIG. 3 , and the main difference between the two is that the formation positions of the side sealants 5 are different.

Please refer to FIG. 7 . Specifically, in this embodiment, the first sub-sidewall 110s - 3 of the first substrate 110 , the first sub-sidewall 210s - 4 of the second substrate 210 , and the first sub-sidewall 210s - 4 of the first substrate 110 One side edge sealant 5 is formed on the sub-sidewall 110s-4 and the first sub-sidewall 210s-4 of the second substrate 210 . In short, in this embodiment, the display panel DP is, for example, a rectangle, and the side sealants 5 can be formed on the two opposite short sides of the display panel DP, and not formed on the long sides of the non-bonding side of the display panel DP. Side sealant 5.

FIG. 8 is a schematic top view of the display device 10D according to an embodiment of the present invention. FIG. 8 omits the illustration of the medium 3 and the waterproof layer 6 .

The display device 10D of FIG. 8 is similar to the display device 10 of FIG. 3 , and the main difference between the two is that the formation positions of the side sealants 5 are different.

Please refer to FIG. 8 . Specifically, in this embodiment, the first sub-sidewall 110s - 3 of the first substrate 110 , the first sub-sidewall 210s - 3 of the second substrate 210 , and the second sub-sidewall 210s - 3 of the first substrate 110 One side edge sealant 5 is formed on the sub-sidewall 110s-2 and the second sub-sidewall 210s-2 of the second substrate 210 . In short, in this embodiment, the display panel DP is, for example, a rectangle, and the side sealant 5 can be formed on one of the short sides of the display panel DP and one long side of the non-bonded side.

FIG. 9 is a schematic top view of a display device 10E according to an embodiment of the present invention. FIG. 9 omits the illustration of the display medium 3 and the waterproof layer 6 .

The display device 10E of FIG. 9 is similar to the display device 10D of FIG. 8 , and the main difference is that in the embodiment of FIG. 9 , the display device 10E is resized.

Referring to FIG. 9 , in this embodiment, since the display device 10E is resized, the side sealant 5 is adjacent to at least one pixel structure SPX. Specifically, in this embodiment, the first sub-sidewall 110s-3 of the first substrate 110 may be substantially flush with one end GLa of the gate line GL; the second sub-sidewall 110s-2 of the first substrate 110 may be aligned with One end DLa of the data line DL is substantially aligned; the side sealant 5 can be in contact with the sidewall GLas of one end GLa of the gate line GL and/or the sidewall DLas of one end DLa of the data line DL. More specifically, in this embodiment, since the side sealant 5 has flowability during its formation, the side sealant 5 will penetrate between the first substrate 110 and the second substrate 210 , and the side sealant 5 will The glue 5 may overlap with the pixel electrode PE of at least one pixel structure SPX corresponding to the first sub-sidewall 110 s - 3 of the first substrate 110 , and/or the side sealant 5 may overlap with the second sub-surface corresponding to the first substrate 110 . The pixel electrodes PE of the at least one pixel structure SPX of the sidewall 110s-2 overlap.

1: Pixel array substrate 1a, 2a: Display area 1b, 2b: Surrounding area 1b-1: Engagement side 1b-2, 1b-3, 1b-4, 2b-2, 2b-3, 2b-4: non-joint side 2: Opposite substrate 3: Display Media 4: Frame glue 4-1, 4-2, 4-3, 4-4: Partial sealant 4-1a: Endpoints 5: side sealant 5-1: Part 1 5-2: Part II 5-3 Part 3 5-3a: Plane 5-4: Part 4 6: Waterproof layer 6a: Surface 7: Drive element 8: Retaining Wall Structure 10, 10A, 10B, 10C, 10D: Display device 110: First base 110s, 210s, DLas, GLas: Sidewall 110s-3, 110s-4, 210s-3, 210s-4: first sub-side wall 110s-2, 210s-2: Second sub-side wall 110e-3, 110e-4: first edge 110e-2: Second Edge 210: Second base DL: Data Line DLa: one end DP: Display Panel d1: first direction d2: second direction d3: third direction d4: fourth direction GL: gate line GLa: one end gl: patch cord P: tools PE: pixel electrode SPX: pixel structure T1, T2: Thickness W: width

1A to 1F are schematic cross-sectional views of a manufacturing process of a display device 10 according to an embodiment of the present invention. FIG. 2 is a schematic top view of a display panel DP according to an embodiment of the present invention. FIG. 3 is a schematic top view of the display device 10 according to an embodiment of the present invention. FIG. 4 is a schematic cross-sectional view of a display device 10A according to an embodiment of the present invention. FIG. 5 is a schematic cross-sectional view of a display device 10B according to an embodiment of the present invention. FIG. 6 is a schematic top view of a display device 10B according to an embodiment of the present invention. FIG. 7 is a schematic top view of a display device 10C according to an embodiment of the present invention. FIG. 8 is a schematic top view of the display device 10D according to an embodiment of the present invention. FIG. 9 is a schematic top view of a display device 10E according to an embodiment of the present invention.

1: Pixel array substrate 1a, 2a: Display area 1b, 2b: Surrounding area 2: Opposite substrate 3: Display Media 5: side sealant 5-1: Part 1 5-2: Part II 5-3 Part 3 5-3a: Plane 6: Waterproof layer 6a: Surface 10: Display device 110: First base 110s, 210s: Sidewall 210: Second base d1: first direction SPX: pixel structure T1, T2: Thickness

Claims (11)

A display device, comprising: a first substrate with a bonding side, wherein a sidewall of the first substrate includes a first sub-sidewall staggered on the bonding side; a plurality of pixel structures disposed on the first substrate ; a second base, arranged opposite to the first base, wherein a side wall of the second base includes a first sub-side wall, and the first sub-side wall of the first base and the first sub-side wall of the second base A sub-side wall corresponds to one; a display medium is disposed between the first substrate and the second substrate; a sealant is disposed between the first substrate and the second substrate, and corresponds to the The joint side is provided; and one side edge sealant comprises: a first part disposed on the first sub-side wall of the side wall of the first substrate; a second part disposed on the side wall of the second substrate on the first sub-sidewall; and a third portion disposed between the first portion and the second portion and having the first sub-sidewall facing away from the sidewall of the first substrate and the second substrate A plane of the first sub-sidewall of the sidewall, wherein the thickness of the first portion in a first direction decreases as it moves away from the third portion, and the thickness of the second portion in the first direction decreases as it moves away from the third portion The third portion decreases, and the first direction is substantially perpendicular to the first sub-sidewall of the sidewall of the first substrate; Wherein, in the cross-sectional view of the display device, the side frame glue is located outside the frame glue, the frame glue and the side seal glue together surround the pixel structures, and one end of the frame glue is connected to the first The first sub-sidewalls of the substrate are substantially trimmed. The display device according to claim 1, further comprising: a waterproof layer disposed on the side sealant, wherein the side sealant is located between the waterproof layer and the side wall of the first substrate, and the side sealant The edge sealant is located between the waterproof layer and the side wall of the second substrate. The display device of claim 2, wherein the waterproof layer is substantially conformally disposed on the side sealant. The display device of claim 2, wherein the waterproof layer has a convex surface, and the convex surface of the waterproof layer overlaps with the plane of the side sealant. The display device according to claim 1, wherein the side sealant further comprises: a fourth part disposed between the first substrate and the second substrate, wherein the first substrate and the side sealant are The fourth portion and the second substrate are sequentially arranged in a second direction, and the first direction is substantially perpendicular to the second direction. The display device according to claim 1, wherein the side sealant is in contact with the display medium. The display device according to claim 1, further comprising: a retaining wall structure disposed on one of the first substrate and the second substrate and abutting against the other of the first substrate and the second substrate, Wherein, in the top view of the display device, the retaining wall structure is located between the pixel structures and the side sealant. The display device according to claim 1, further comprising: a plurality of data lines disposed on the first substrate and arranged in a third direction; a plurality of gate lines disposed on the first substrate and arranged in a third direction A fourth direction is arranged, wherein the third direction and the fourth direction are staggered, and the pixel structures are electrically connected to the data lines and the gate lines; and a plurality of switching lines are disposed on the on the first substrate and arranged in the third direction, wherein the patch cords are electrically connected to the gate lines. The display device of claim 8, wherein the first substrate has a first edge, the first edges are oppositely disposed and arranged in the third direction, and the sidewall of the first substrate includes a the first sub-sidewall. The display device of claim 9, wherein the first substrate further has a second edge, the second edge and the gate lines are arranged in the fourth direction, and the sidewall of the first substrate includes defining the A second sub-sidewall of the second edge, and the side sealant is disposed on the second sub-sidewall of the first substrate. The display device of claim 1, wherein the side sealant is adjacent to at least one of the pixel structures.

Images