TWI808605B - Touch display and manufacturing method thereof - Google Patents

Abstract

A touch display including a first substrate, a plurality of display pixels, a plurality of dummy pixels and a touch-electrode layer is provided. The plurality of dummy pixels are disposed between the plurality of display pixels and a first edge of the first substrate. The plurality of display pixels are disposed between the first substrate and the touch-electrode layer. A vertical projection of a second edge of the plurality of dummy pixels on the first substrate is located between a vertical projection of a third edge of the touch-electrode layer on the first substrate and the first edge of the first substrate. A distance between the vertical projection of the second edge on the first substrate and the first edge is larger than zero. A manufacturing method of a touch display is also provided.

Description

Touch display and manufacturing method thereof

The present invention relates to a display and its manufacturing method, and in particular to a touch display and its manufacturing method.

With the development of the technology industry, displays such as mobile phones, tablet computers or eBooks have been widely used in daily life. For displays with different sizes, different mask designs are often required, which greatly increases the manufacturing cost. How to manufacture displays of different sizes using the same mask has become an urgent problem to be solved.

The invention provides a touch display and a manufacturing method thereof. The manufactured displays can have various sizes without using differently designed photomasks in the manufacturing process.

According to an embodiment of the present invention, a touch display is provided, including a first substrate, a plurality of display pixels, a plurality of dummy pixels, and a touch electrode layer. these show The pixels are arranged in an array on the first region of the first substrate. The dummy pixels are arranged in an array on the second area of the first substrate, and are arranged between the display pixels and the first edge of the first substrate. The display pixels are arranged between the first substrate and the touch electrode layer. The vertical projection of the second edge of the dummy pixels on the first substrate falls between the vertical projection of the third edge of the touch electrode layer on the first substrate and the first edge, and the distance between the vertical projection of the second edge on the first substrate and the first edge is greater than zero.

According to an embodiment of the present invention, a method for manufacturing a touch display is provided, including arranging a plurality of display pixels and a plurality of dummy pixels in an array on a first region of a first substrate and a second region adjacent to the first region; removing part of the dummy pixels on the second region to form a first edge exposure region on the first substrate; combining the second substrate with the first substrate to form a module, wherein the display pixels are interposed between the first substrate and the second substrate; setting a touch electrode layer on the surface of the second substrate away from the first substrate; A second edge exposure area is formed on the surface, wherein, in the edge overlapping area, the vertical projection of the second edge exposure area on the first substrate overlaps the first edge exposure area; cutting the module along the cutting line, wherein the cutting line falls in the edge overlapping area, and there are dummy pixels between the cutting line and these display pixels.

Based on the above, the manufacturing method of the touch display provided by the embodiment of the present invention can determine the edge exposure positions of the first substrate and the second substrate according to the size of the touch display to be manufactured, so as to further cut out the required touch display. The touch display manufactured by the above-mentioned manufacturing method of the touch display can be of various sizes. inch. Moreover, in the manufacturing process of the touch display, only the photomask of the same design needs to be used.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

100, 300, 400, 500, 600, 700: touch display

110: the first substrate

110S: Edge

111, 112, 811, 812: areas

113:GOA circuit

114: Peripheral lines

115: Exposure border area

116: frame glue

117: switch element

117C: Incomplete switching element

118: Pixel electrode

118C: Incomplete pixel electrode

119: insulation layer

120: second substrate

121, 621, 721: touch electrode layer

122: Exposure border area

123, 823: cutting line

124: color resistance

125: black matrix

126: spacer

722: first floor

723: second floor

1000, 2000: modules

DP: virtual pixel

D1, D2: distance

IP: display pixels

M1: drive unit

M1P: incomplete drive unit

M2: Sensing unit

OC1: insulating layer

S1, S2: virtual pixel edge

S3: Edge of touch electrode layer

S4: Peripheral line edge

1A to 1F are schematic diagrams showing the steps of a manufacturing method of a touch display according to an embodiment of the present invention.

Fig. 1G shows a schematic cross-sectional view along the dotted line AA' in Fig. 1F.

FIG. 1H shows a schematic cross-sectional view of a touch display according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a manufacturing method of a touch display according to an embodiment of the invention.

FIG. 3 is a schematic cross-sectional view of a touch display according to an embodiment of the invention.

FIG. 4 is a schematic cross-sectional view of a touch display according to an embodiment of the invention.

FIG. 5 is a schematic cross-sectional view of a touch display according to an embodiment of the invention.

FIG. 6 is a schematic cross-sectional view of a touch display according to an embodiment of the invention.

FIG. 7 is a schematic cross-sectional view of a touch display according to an embodiment of the invention.

FIG. 8 is a schematic diagram of a manufacturing method of a touch display according to an embodiment of the present invention.

1A to 1F are schematic diagrams illustrating steps of a manufacturing method of a touch display according to an embodiment of the present invention. Fig. 1G shows a schematic cross-sectional view along the dotted line AA' in Fig. 1F. For the convenience of understanding, the dotted line AA' is correspondingly marked in FIG. 1A-FIG. 1E.

Please refer to FIG. 1A and FIG. 1G at the same time. The manufacturing method of the touch display provided by this embodiment includes arranging a plurality of display pixels IP and a plurality of dummy pixels DP in an array on the first region 111 of the first substrate 110 and the second region 112 adjacent to the first region 111 respectively. The display pixels IP and the dummy pixels DP include switching elements 117 and pixel electrodes 118 . Moreover, the GOA circuit 113 is disposed in an area adjacent to the first area 111 to electrically connect the display pixel IP. The peripheral circuit 114 electrically connected to the GOA circuit 113 is disposed in an area adjacent to the GOA circuit 113 .

Referring to FIG. 1B and FIG. 1G , the step shown in FIG. 1B forms an exposed edge region 115 on the first substrate 110, including removing part of the dummy pixel DP on the second region 112, and removing part of the GOA circuit 113 and part of the peripheral circuit 114 to generate virtual pixel edges S1, S2 and peripheral circuit edge S4. Therefore, as shown in FIG. 1G , there may be incomplete switch elements 117C at the virtual pixel edges S1 and S2 , but the present invention is not limited thereto. It should be noted that no metal exists on the first substrate 110 in the edge exposure area 115 to avoid short circuit in the subsequent cutting process.

Referring to FIG. 1C and FIG. 1G , the step shown in FIG. 1C sets a sealant 116 on the first substrate 110 . The sealant 116 covers at least the edge S1 of the dummy pixel and the edge S4 of the peripheral circuit, and also covers the incomplete switch element 117C.

Referring to FIG. 1D and FIG. 1G , the steps shown in FIG. 1D combine the second substrate 120 with the first substrate 110 to form the module 1000 , and set the touch electrode layer 121 on the surface of the second substrate 120 away from the first substrate 110 . A color-resist layer is disposed on the second substrate 120, and the color-resist layer includes a plurality of color-resistors 124, and each color-resistor 124 corresponds to a display pixel IP or a dummy pixel DP. A plurality of black matrices 125 and a plurality of spacers 126 are also disposed on the second substrate 120 , each of the black matrix 125 and the spacers 126 corresponds to a display pixel IP or a dummy pixel DP. In the module 1000 , the display pixels IP and the dummy pixels DP are interposed between the first substrate 110 and the second substrate 120 . The touch electrode layer 121 disposed on the second substrate 120 includes an insulating layer OC1 , a driving unit M1 and a sensing unit M2 . It should be noted that the touch electrode layer 121 may be a double-layer touch electrode layer or a single-layer touch electrode layer.

Referring to FIG. 1E and FIG. 1G , the step shown in FIG. 1E forms an exposed edge region 122 on the surface of the second substrate 120 away from the first substrate 110 . Specifically, a part of the touch electrode layer 121 is removed, and an edge S3 of the touch electrode layer is produced. The vertical projection of the edge area 122 on the first substrate 110 overlaps the edge area 115 to define an edge overlapping area. It should be noted that, as shown in FIG. 1G , there is an incomplete driving unit M1P at the edge S3 of the touch electrode layer. However, the present invention is not limited thereto. In an unillustrated embodiment, there is an incomplete sensing unit at the edge S3 of the touch electrode layer.

Referring to FIG. 1F and FIG. 1G , the steps shown in FIG. 1F define a cutting line 123 in the above-mentioned exposure edge overlapping area, and cut the module 1000 along the cutting line 123 .

In the steps shown in FIG. 1A to FIG. 1F , it illustrates how to decide how to process the first substrate 110 and the second substrate 120 according to the size of the touch display to be manufactured. Line exposure edge position to further cut out the required touch display. Specifically, referring to FIG. 1G and FIG. 1H , after cutting the module 1000 along the cutting line 123 , a touch display 100 is produced, and the first substrate 110 in the touch display 100 has an edge 110S corresponding to the cutting line 123 , as shown in FIG. 1H .

Please refer to FIG. 8 , which illustrates a schematic diagram of various cutting methods according to an embodiment of the present invention. Among the eight modules shown in FIG. 8 , each module includes an area 811 provided with a plurality of display pixels IP, and an area 812 provided with a plurality of dummy pixels DP, GOA circuits and peripheral circuits. As shown in FIG. 8 , one large-sized display can be cut along the cutting line 823 by the three cutting methods shown in the left column, two medium-sized displays can be cut along the cutting line 823 by the four cutting methods shown in the middle column, or four smaller-sized displays can be cut along the cutting line 823 by the cutting methods shown in the right column. In addition, in the above-mentioned 8 uncut modules, there is also a touch electrode layer, in which the driving unit is unidirectional driving, and the sensing unit is bidirectional driving.

In other words, the touch displays manufactured by the above-mentioned manufacturing method of the touch display exemplified in FIGS. 1A to 1F may be of various sizes. Moreover, in the process of manufacturing the module 1000 that has not been cut, only the photomask of the same design needs to be used. Compared with the prior art that uses different mask designs in the manufacture of displays of different sizes, the manufacturing method of the touch display provided by the embodiment of the present invention greatly reduces the manufacturing cost.

Referring to FIG. 1F and FIG. 1H , the touch display 100 includes a first substrate 110 , a plurality of display pixels IP, a plurality of dummy pixels DP and a touch electrode layer 121 . show like The pixels IP are arranged in an array on the first region 111 of the first substrate 110 . The dummy pixels DP are arranged in an array on the second region 112 of the first substrate 110 , and are arranged between the display pixels IP and the edge 110S of the first substrate 110 . The display pixel IP is disposed between the first substrate 110 and the touch electrode layer 121 . The vertical projection of the virtual pixel edge S1 on the first substrate 110 falls between the vertical projection of the touch electrode layer edge S3 on the first substrate 110 and the edge 110S, and the distance D1 between the vertical projection of the virtual pixel edge S1 on the first substrate 110 and the edge 110S is greater than zero.

As shown in FIG. 1H , there is no metal on the exposed edge region 115 on the first substrate 110 and between the edge 110S of the first substrate 110 and the edge S1 of the dummy pixel. The vertical projection of the sealant 116 on the first substrate 110 overlaps the vertical projection of the virtual pixel edge S1 on the first substrate 110 . There is no metal on the exposed edge region 122 on the second substrate 120 between the edge 110S of the first substrate 110 and the edge S3 of the touch electrode layer. The vertical projection of at least one color resist 124 disposed on the second substrate 120 and relative to the edge area 122 on the first substrate 110 overlaps the first substrate 110 . The vertical projection of the at least one color resist 124 on the first substrate 110 overlaps the exposure edge region 115 .

D1

3mm。對應的，周邊線路邊緣S4在第一基板110的垂直投影與第一基板110最靠近周邊線路邊緣S4的一邊緣之間的距離大於或等於0.5mm，且小於或等於3mm。 In one embodiment of the present invention, referring to FIG. 1F and FIG. 1H at the same time, the distance D1 between the vertical projection of the virtual pixel edge S1 on the first substrate 110 and the edge 110S of the first substrate 110 satisfies 0.5mm

D1

3mm. Correspondingly, the distance between the vertical projection of the peripheral circuit edge S4 on the first substrate 110 and an edge of the first substrate 110 closest to the peripheral circuit edge S4 is greater than or equal to 0.5 mm and less than or equal to 3 mm.

D2

6mm。 In one embodiment of the present invention, referring to FIG. 1F and FIG. 1H at the same time, the distance D2 between the vertical projection of the edge S3 of the touch electrode layer on the first substrate 110 and the edge 110S of the first substrate 110 satisfies 1.35 mm.

D2

6mm.

In order to fully illustrate various implementation aspects of the present invention, other embodiments of the present invention will be described below. It must be noted here that the following embodiments use the component numbers and part of the content of the previous embodiments, wherein the same numbers are used to denote the same or similar components, and descriptions of the same technical content are omitted. For the description of omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated.

Referring to FIG. 2 , it shows a schematic diagram of a manufacturing method of a touch display according to an embodiment of the present invention. Compared with the unilaterally driven touch display 100 shown in FIG. 1F , the module 2000 of this embodiment is equipped with two GOA circuits 113 and two peripheral circuits 114 disposed on opposite sides of the first region 111 , so that the touch display cut from the module 2000 can be unilaterally driven or bilaterally driven.

Referring to FIG. 3 , it shows a schematic cross-sectional view of a touch display according to an embodiment of the present invention. The difference between the touch display 300 of this embodiment and the touch display 100 is that there is an incomplete pixel electrode 118C at the edge S1 of the virtual pixel.

Referring to FIG. 4 , it shows a schematic cross-sectional view of a touch display according to an embodiment of the present invention. The difference between the touch display 400 of this embodiment and the touch display 100 is that an insulating layer 119 is disposed on the first substrate 110 and on the edge area 115 between the edge 110S of the first substrate 110 and the edge S1 of the dummy pixel. In this embodiment, the insulating layer 119 is a passivation layer. However, the present invention is not limited thereto. In other embodiments, a gate insulating layer or an interlayer insulating layer may be disposed on the edge region 115 .

Referring to FIG. 5 , it shows a horizontal view of a touch display according to an embodiment of the present invention. Sectional schematic. The difference between the touch display 500 of this embodiment and the touch display 400 is that the pixel electrode 118 or the incomplete pixel electrode 118C may be disposed on the insulating layer 119 on the exposed edge region 115 .

Referring to FIG. 6 , it shows a schematic cross-sectional view of a touch display according to an embodiment of the present invention. The difference between the touch display 600 of this embodiment and the touch display 500 is that the insulating layer OC1 of the touch electrode layer 621 is also disposed on the exposed edge region 122 of the second substrate 120 .

Referring to FIG. 7 , it shows a schematic cross-sectional view of a touch display according to an embodiment of the present invention. The difference between the touch display 700 of this embodiment and the touch display 600 is that the touch electrode layer 721 includes a first layer 722 and a second layer 723 . In the first layer 722, a plurality of driving units M1 are disposed. In the second layer 723, a plurality of sensing units M2 are disposed.

To sum up, the manufacturing method of the touch display provided by the embodiment of the present invention can determine the edge exposure positions of the first substrate and the second substrate according to the size of the touch display to be manufactured, so as to further cut out the required touch display. The touch display manufactured by the above method of manufacturing the touch display may be of various sizes. Moreover, in the manufacturing process of the touch display, only the photomask of the same design needs to be used, which greatly reduces the manufacturing cost.

100:Touch display

110: the first substrate

115: Exposure border area

116: frame glue

117: switch element

117C: Incomplete switching element

118: Pixel electrode

119: insulation layer

120: second substrate

121: Touch electrode layer

122: Exposure border area

123: cutting line

124: color resistance

125: black matrix

126: spacer

1000:Module

DP: virtual pixel

IP: display pixels

M1: drive unit

M1P: incomplete drive unit

M2: Sensing unit

OC1: insulating layer

S1, S2: virtual pixel edge

S3: Edge of touch electrode layer

Claims (14)

A touch display, comprising: a first substrate; a plurality of display pixels arranged in an array on a first region of the first substrate; a plurality of dummy pixels arranged in an array on a second region of the first substrate, and arranged between the display pixels and a first edge of the first substrate; and a touch electrode layer, wherein the display pixels are arranged between the first substrate and the touch electrode layer, A vertical projection of a second edge of the dummy pixels on the first substrate falls between a third edge of the touch electrode layer between the vertical projection of the first substrate and the first edge, and the distance between the vertical projection of the second edge on the first substrate and the first edge is greater than zero. The touch display according to claim 1, wherein the distance between the vertical projection of the second edge on the first substrate and the first edge is D1, and 0.5 mm≤ D1≤3 mm. The touch display according to claim 1, wherein the distance between the vertical projection of the third edge on the first substrate and the first edge is D2, and satisfies 1.35 mm≤D2≤6 mm. The touch display according to claim 1, wherein the touch display is a liquid crystal touch display, and at least one of the dummy pixels at the second edge has an incomplete switch element or an incomplete pixel electrode. The touch display as described in claim 1 further includes a peripheral line, the touch display is a liquid crystal touch display, and each of the display pixels includes a switching element, wherein the peripheral line is disposed on the first substrate and electrically connected to the switching elements, and the distance between a fourth edge of the peripheral line on the vertical projection of the first substrate and an edge of the first substrate closest to the fourth edge is greater than or equal to 0.5 mm. The touch display according to claim 1, wherein the touch electrode layer includes a plurality of touch units, each of the touch units includes a driving unit and a sensing unit, and a touch unit of the touch units at the third edge does not have the driving unit or the sensing unit with a complete structure. The touch display according to claim 1 further includes a color resist layer, and the first edge and the third edge define a border area, and in the border area, the vertical projection of the color resist layer on the first substrate overlaps the first substrate. The touch display as claimed in claim 1 further includes a sealant, wherein the vertical projection of the sealant on the first substrate overlaps the vertical projection of the second edge on the first substrate. The touch display according to claim 1, wherein the first edge and the second edge define an exposed edge area, and in the exposed edge area, there is no metal on the first substrate. In the touch display according to claim 9, an insulating layer is disposed on the first substrate in the edge exposure area. In the touch display as claimed in claim 9, in the exposed edge area, a pixel electrode is disposed on the first substrate. The touch display according to claim 1 further includes a second substrate disposed between the display pixels and the touch electrode layer, the first edge and the third edge define an exposed edge area, and there is no metal on the second substrate in the exposed edge area. In the touch display according to claim 12, an insulating layer is disposed on the second substrate in the edge exposure area. A method of manufacturing a touch display, comprising: A plurality of display pixels and a plurality of dummy pixels are respectively arranged in an array on a first region of a first substrate and a second region adjacent to the first region; removing some of the dummy pixels on the second area to form a first border area on the first substrate; combining a second substrate with the first substrate to form a module, wherein the display pixels are interposed between the first substrate and the second substrate; setting a touch electrode layer on a surface of the second substrate away from the first substrate; removing a part of the touch electrode layer on the surface to form a second edge area on the surface of the second substrate, wherein, in an edge overlapping area, the vertical projection of the second edge area on the first substrate overlaps the first edge area; The module is cut along a cutting line, wherein the cutting line falls in the overlapping area of the exposure edge, and the dummy pixels are provided between the cutting line and the display pixels.

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