Touch display and manufacturing method thereof

Abstract

A touch display and a manufacturing method thereof. The touch display includes a first substrate, a plurality of display pixels, a plurality of dummy pixels, and a touch electrode layer. The dummy pixels are disposed between the display pixels and a first edge of the first substrate. The display pixels are disposed between the first substrate and the touch electrode layer. The second edges of the dummy pixels are perpendicularly projected onto the first substrate and fall between the perpendicular projection of the third edge of the touch electrode layer onto the first substrate and the first edge of the first substrate, and the distance between the perpendicular projection of the second edges onto the first substrate and the first edge is greater than zero.

Description

Technical Field

[0001] The present invention relates to a display and a manufacturing method thereof, and in particular to a touch display and a manufacturing method thereof. Background Art

[0002] With the increasing development of the technology industry, displays such as mobile phones, tablet computers, and e-books have become widely used in daily life. Displays of different sizes often require different mask designs, significantly increasing process costs. How to manufacture displays of different sizes using the same mask has become a pressing issue. Summary of the Invention

[0003] The present invention provides a touch display and a manufacturing method thereof. The manufactured display can have various sizes and does not require the use of masks of different designs in the process.

[0004] According to one embodiment of the present invention, a touch display is provided, comprising a first substrate, a plurality of display pixels, a plurality of dummy pixels, and a touch electrode layer. The display pixels are arranged in an array on a first region of the first substrate. The dummy pixels are arranged in an array on a second region of the first substrate and are arranged between the display pixels and a first edge of the first substrate. The display pixels are arranged between the first substrate and the touch electrode layer. The second edges of the dummy pixels are perpendicularly projected onto the first substrate and fall between the perpendicular projection of the third edge of the touch electrode layer onto the first substrate and the first edge, and the distance between the perpendicular projection of the second edges onto the first substrate and the first edge is greater than zero.

[0005] According to one embodiment of the present invention, a method for manufacturing a touch display is provided, comprising: arranging a plurality of display pixels and a plurality of dummy pixels in an array on a first area of a first substrate and on a second area adjacent to the first area; removing a portion of the dummy pixels on the second area to form a first exposure border region on the first substrate; combining the second substrate with the first substrate to form a module, wherein the display pixels are sandwiched between the first substrate and the second substrate; disposing a touch electrode layer on a surface of the second substrate remote from the first substrate; removing a portion of the touch electrode layer on this surface to form a second exposure border region on this surface of the second substrate, wherein, in an exposure border overlap region, a vertical projection of the second exposure border region on the first substrate overlaps the first exposure border region; and cutting the module along a cutting line, wherein the cutting line falls within the exposure border overlap region, and dummy pixels are provided between the cutting line and the display pixels.

[0006] Based on the above, the touch display manufacturing method provided by the embodiment of the present invention can determine the exposure positions of the first and second substrates according to the desired touch display size, thereby further cutting out the desired touch display. The touch displays manufactured by the above touch display manufacturing method can be of various sizes. Furthermore, during the touch display manufacturing process, only a single mask design is required.

[0007] In order to make the above features and advantages of the present invention more clearly understood, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figures 1A to 1F Schematic diagrams respectively illustrate steps of a method for manufacturing a touch display according to an embodiment of the present invention.

[0009] Figure 1G Shown along Figure 1F Schematic diagram of the cross section along the dotted line AA'.

[0010] Figure 1H FIG. 4 is a schematic cross-sectional view of a touch display according to an embodiment of the present invention.

[0011] Figure 2 FIG. 4 is a schematic diagram of a method for manufacturing a touch display according to an embodiment of the present invention.

[0012] Figure 3 FIG. 4 is a schematic cross-sectional view of a touch display according to an embodiment of the present invention.

[0013] Figure 4 FIG. 4 is a schematic cross-sectional view of a touch display according to an embodiment of the present invention.

[0014] Figure 5 FIG. 4 is a schematic cross-sectional view of a touch display according to an embodiment of the present invention.

[0015] Figure 6 FIG. 4 is a schematic cross-sectional view of a touch display according to an embodiment of the present invention.

[0016] Figure 7 FIG. 4 is a schematic cross-sectional view of a touch display according to an embodiment of the present invention.

[0017] Figure 8 is a schematic diagram of a method for manufacturing a touch display according to an embodiment of the present invention.

[0018] Description of reference numerals:

[0019] 100, 300, 400, 500, 600, 700: Touch display

[0020] 110: First substrate

[0021] 110S: Edge

[0022] 111, 112, 811, 812: Area

[0023] 113: GOA circuit

[0024] 114: Peripheral lines

[0025] 115: First exposure area

[0026] 116: Frame glue

[0027] 117: Switching element

[0028] 117C: Incomplete switching element

[0029] 118: Pixel electrode

[0030] 118C: Incomplete pixel electrode

[0031] 119: Insulation layer

[0032] 120: Second substrate

[0033] 121, 621, 721: touch electrode layer

[0034] 122: Second exposure area

[0035] 123, 823: cutting line

[0036] 124: Color resistance

[0037] 125: Black Matrix

[0038] 126: Spacer

[0039] 722: First floor

[0040] 723: Second Floor

[0041] 1000, 2000: Module

[0042] DP: Virtual Pixel

[0043] D1, D2: distance

[0044] IP: Display Pixels

[0045] M1: Drive unit

[0046] M1P: Incomplete driver unit

[0047] M2: Sensing unit

[0048] OC1: Insulation layer

[0049] S1, S2: virtual pixel edges

[0050] S3: Edge of touch electrode layer

[0051] S4: Peripheral line edge DETAILED DESCRIPTION

[0052] Figures 1A to 1F Schematic diagrams respectively show the steps of a method for manufacturing a touch display according to an embodiment of the present invention. Figure 1G Shown along Figure 1F For ease of understanding, the dotted line AA' is marked on the Figure 1A to Figure 1E .

[0053] Please also refer to Figure 1A and Figure 1G The manufacturing method of the touch display provided in this embodiment includes disposing a plurality of display pixels IP and a plurality of dummy pixels DP in an array on a first region 111 of a first substrate 110 and on a second region 112 adjacent to the first region 111. The display pixels IP and the dummy pixels DP include a switching element 117 and a pixel electrode 118. Furthermore, a GOA circuit 113 is disposed in an area adjacent to the first region 111 to electrically connect the display pixels IP. Peripheral circuits 114 electrically connected to the GOA circuit 113 are disposed in an area adjacent to the GOA circuit 113.

[0054] Reference Figure 1B and Figure 1G , Figure 1B The steps shown form a first exposure 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 dummy pixel edges S1, S2 and peripheral circuit edge S4. Figure 1G As shown, incomplete switching elements 117C may exist 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 within the first exposed edge region 115 to avoid short circuits during subsequent cutting processes.

[0055] Reference Figure 1C and Figure 1G , Figure 1C In the illustrated step, a sealant 116 is provided on the first substrate 110. The sealant 116 covers at least the virtual pixel edge S1 and the peripheral circuit edge S4, and also covers the incomplete switch element 117C.

[0056] Reference Figure 1D and Figure 1G , Figure 1D The steps shown combine the second substrate 120 with the first substrate 110 to form the module 1000, and a touch electrode layer 121 is provided on the surface of the second substrate 120 facing away from the first substrate 110. A color resist layer is provided on the second substrate 120, comprising a plurality of color resists 124, each corresponding to a display pixel IP or a dummy pixel DP. A plurality of black matrices 125 and a plurality of spacers 126 are also provided on the second substrate 120, each corresponding to a display pixel IP or a dummy pixel DP. In the module 1000, the display pixels IP and the dummy pixels DP are sandwiched between the first substrate 110 and the second substrate 120. The touch electrode layer 121 provided 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 can be a double-layer touch electrode layer or a single-layer touch electrode layer.

[0057] Reference Figure 1E and Figure 1G , Figure 1E The steps shown form a second edge exposure area 122 on the surface of the second substrate 120 away from the first substrate 110. Specifically, a portion of the touch electrode layer 121 is removed, and a touch electrode layer edge S3 is generated. The vertical projection of the second edge exposure area 122 on the first substrate 110 overlaps the first edge exposure area 115, defining an edge exposure overlap area. It should be noted that, as Figure 1G As shown, an incomplete driving unit M1P exists at the edge S3 of the touch electrode layer. However, the present invention is not limited thereto. In an embodiment not shown, an incomplete sensing unit exists at the edge S3 of the touch electrode layer.

[0058] Reference Figure 1F and Figure 1G , Figure 1F The steps shown define a cutting line 123 within the aforementioned overlapping area of the exposed edges, and cut the module 1000 along the cutting line 123 .

[0059] exist Figures 1A to 1F The steps shown in the figure illustrate how to determine the exposure positions of the first substrate 110 and the second substrate 120 according to the size of the touch display to be manufactured, so as to further cut out the required touch display. Figure 1G and Figure 1H After the module 1000 is cut along the cutting line 123, a touch display 100 is produced. The first substrate 110 in the touch display 100 has an edge 110S corresponding to the cutting line 123. Figure 1H shown.

[0060] Please refer to Figure 8, which shows a schematic diagram of various cutting methods according to an embodiment of the present invention. Figure 8 In the eight modules shown, each module includes an area 811 where a plurality of display pixels IP are provided, and an area 812 where a plurality of virtual pixels DP, a GOA circuit and peripheral circuits are provided. Figure 8 As shown, the three cutting methods shown in the left column can each be used to cut a larger display along cutting line 823, the four cutting methods shown in the middle column can each be used to cut two medium-sized displays along cutting line 823, or the cutting method shown in the right column can be used to cut four smaller displays along cutting line 823. Furthermore, the eight uncut modules described above also have a touch electrode layer, where the driving unit is unidirectional and the sensing unit is bidirectional.

[0061] In other words, through the above Figures 1A to 1F The touch display manufacturing method illustrated in the example can be used to manufacture touch displays of various sizes. Furthermore, during the manufacturing process of the uncut modules 1000, only a single mask design is required. Compared to the prior art, which uses different mask designs to manufacture displays of different sizes, the touch display manufacturing method provided by the embodiments of the present invention significantly reduces process costs.

[0062] Reference Figure 1F and Figure 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. The display pixels IP are arranged in an array on a first region 111 of the first substrate 110. The dummy pixels DP are arranged in an array on a second region 112 of the first substrate 110 and are arranged between the display pixels IP and an edge 110S of the first substrate 110. The display pixels IP are arranged between the first substrate 110 and the touch electrode layer 121. The vertical projection of the dummy 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 a distance D1 between the vertical projection of the dummy pixel edge S1 on the first substrate 110 and the edge 110S is greater than zero.

[0063] like Figure 1HAs shown, there is no metal in the first edge exposure region 115 on the first substrate 110, between the edge 110S of the first substrate 110 and the virtual pixel edge S1. 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 in the second edge exposure region 122 on the second substrate 120, between the edge 110S of the first substrate 110 and the touch electrode layer edge S3. At least one color resist 124 disposed on the second substrate 120, opposite to the second edge exposure region 122, has its vertical projection overlapped with the first substrate 110. The vertical projection of the at least one color resist 124 on the first substrate 110 overlaps with the first edge exposure region 115.

[0064] In one embodiment of the present invention, while referring to Figure 1F and Figure 1H 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 0.5 mm ≤ D1 ≤ 3 mm. Correspondingly, the distance between the vertical projection of the peripheral line edge S4 on the first substrate 110 and the edge of the first substrate 110 closest to the peripheral line edge S4 is greater than or equal to 0.5 mm and less than or equal to 3 mm.

[0065] In one embodiment of the present invention, while referring to Figure 1F and Figure 1H , a distance D2 between a vertical projection of the edge S3 of the touch electrode layer on the first substrate 110 and an edge 110S of the first substrate 110 satisfies 1.35 mm ≤ D2 ≤ 6 mm.

[0066] In order to fully illustrate the various embodiments of the present invention, other embodiments of the present invention will be described below. It must be noted that the following embodiments use the component numbers and some contents of the previous embodiments, wherein the same reference numerals are used to represent the same or similar components, and the description of the same technical contents is omitted. For the description of the omitted parts, please refer to the previous embodiments, and the following embodiments will not be repeated.

[0067] Reference Figure 2 , which shows a schematic diagram of a method for manufacturing a touch display according to an embodiment of the present invention. Figure 1F In the single-sided driven touch display 100 shown, the module 2000 of this embodiment has two GOA circuits 113 and two peripheral circuits 114 arranged on opposite sides of the first area 111, so that the touch display cut from the module 2000 can be single-sided driven or double-sided driven.

[0068] Reference Figure 3, which shows a 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 an incomplete pixel electrode 118C exists at the virtual pixel edge S1.

[0069] Reference Figure 4 , which shows a schematic cross-sectional view of a touch display according to an embodiment of the present invention. The touch display 400 of this embodiment differs from the touch display 100 in that an insulating layer 119 is disposed on the first exposed edge region 115 on the first substrate 110 and between the edge 110S of the first substrate 110 and the virtual pixel edge S1. In this embodiment, the insulating layer 119 is a passivation layer. However, the present invention is not limited to this. In other embodiments, a gate insulating layer or an interlayer insulating layer may be disposed on the first exposed edge region 115.

[0070] Reference Figure 5 , which shows a cross-sectional view of a touch display according to an embodiment of the present invention. The touch display 500 of this embodiment differs from the touch display 400 in that a pixel electrode 118 or an incomplete pixel electrode 118C may be disposed on the insulating layer 119 on the first exposure edge region 115.

[0071] Reference Figure 6 , which shows a cross-sectional view of a touch display according to an embodiment of the present invention. The touch display 600 of this embodiment differs from the touch display 500 in that the insulating layer OC1 of the touch electrode layer 621 is also disposed on the second exposed edge region 122 of the second substrate 120.

[0072] Reference Figure 7 , which shows a schematic cross-sectional view of a touch display according to an embodiment of the present invention. The touch display 700 of this embodiment differs from the touch display 600 in that the touch electrode layer 721 includes a first layer 722 and a second layer 723. The first layer 722 is provided with a plurality of drive units M1. The second layer 723 is provided with a plurality of sensing units M2.

[0073] In summary, the touch display manufacturing method provided by the embodiments of the present invention can determine the edge exposure locations of the first and second substrates based on the desired touch display size, thereby further cutting the desired touch display. Touch displays manufactured using the above-described touch display manufacturing method can be manufactured in various sizes. Furthermore, during the touch display manufacturing process, only a single mask design is required, significantly reducing process costs.

Claims

1. A touch display comprising: a first substrate; A plurality of display pixels are arranged in an array on a first area of the first substrate; A plurality of dummy pixels are arranged in an array on a second area of the first substrate and between the display pixels and a first edge of the first substrate; and a touch electrode layer, wherein the display pixels are disposed between the first substrate and the touch electrode layer, wherein a vertical projection of a second edge of the virtual pixels on the first substrate falls between a vertical projection of a third edge of the touch electrode layer on the first substrate and the first edge, and a distance between the vertical projection of the second edge on the first substrate and the first edge is greater than zero, wherein at least one of the dummy pixels at the second edge has an incomplete switching element or an incomplete pixel electrode, The first edge and the second edge define a first edge-exposed area, and within the first edge-exposed area, there is no metal on the first substrate. 2 . The touch display according to claim 1 , wherein a distance D1 is between the vertical projection of the second edge on the first substrate and the first edge, and 0.5 mm≦D1≦3 mm. 3 . The touch display according to claim 1 , wherein a distance D2 between the vertical projection of the third edge on the first substrate and the first edge satisfies 1.35 mm ≤ D2 ≤ 6 mm. The touch display as claimed in claim 1 , wherein the touch display is a liquid crystal touch display.

5. The touch display according to claim 1 , further comprising a peripheral circuit, the touch display being a liquid crystal touch display, and each of the display pixels including a switch element, wherein the peripheral circuit is disposed on the first substrate and electrically connected to the switch elements, and a distance between a fourth edge of the peripheral circuit and a perpendicular 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.

6. The touch display as claimed in claim 1 , wherein the touch electrode layer comprises a plurality of touch units, each of the touch units comprises a driving unit and a sensing unit, and a touch unit among the touch units at the third edge does not have a structurally complete driving unit or a structurally complete sensing unit.

7. The touch display according to claim 1, further comprising a color resist layer, wherein the first edge and the third edge define a second edge exposure region, and within the second edge exposure region, a vertical projection of the color resist layer on the first substrate overlaps the first substrate. 8 . The touch display according to claim 1 , further comprising a sealant, wherein a vertical projection of the sealant on the first substrate overlaps a vertical projection of the second edge on the first substrate. 9 . The touch display according to claim 1 , wherein the first edge exposure area is configured to prevent a short circuit from occurring when a cutting line falls within the first edge exposure area during a cutting process. 10 . The touch display according to claim 9 , wherein an insulating layer is disposed on the first substrate in the first exposure edge region. 11 . The touch display according to claim 9 , wherein a pixel electrode is disposed on the first substrate in the first exposure edge region.

12. The touch display as claimed in claim 1, further comprising a second substrate disposed between the display pixels and the touch electrode layer, wherein the first edge and the third edge define a second edge-exposure region, and within the second edge-exposure region, the second substrate has no metal. 13 . The touch display according to claim 12 , wherein an insulating layer is disposed on the second substrate in the second exposure edge region.

14. A method for 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 area of a first substrate and a second area adjacent to the first area; removing a portion of the dummy pixels on the second area to form a first exposure edge region on the first substrate; Combining a second substrate with the first substrate to form a module, wherein the display pixels are sandwiched between the first substrate and the second substrate; Disposing a touch electrode layer on a surface of the second substrate away from the first substrate; removing a portion of the touch electrode layer on the surface to form a second edge exposure region on the surface of the second substrate, wherein in an edge exposure overlap region, a vertical projection of the second edge exposure region on the first substrate overlaps the first edge exposure region; The module is cut along a cutting line, wherein the cutting line falls within the exposure edge overlap region, and the dummy pixels are disposed between the cutting line and the display pixels.

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