TWI699676B - Display device manufacture method and display device - Google Patents

Abstract

The present disclosure provides a display device manufacture method comprising separately obtaining a first alignment mark of a touch module and position information of a black matrix of a display module, by acquiring a first image and a second image, thereby calculating a relative position relationship between the touch module and the display module, further obtaining the fit offset of the touch module and the display module. A detection and calculation of the method is simple and a precision is high. A display device manufactured by the method is also provided.

Description

Manufacturing method of display device and display device

The present invention relates to the field of display technology, in particular to a manufacturing method of a display device and a display device.

This section is intended to provide background or context for the specific embodiments of the invention stated in the claims. The description here is not recognized as a conventional technology just because it is included in this section.

According to the physical characteristics of the touch panel, the bonding process can be divided into "Soft-to-Soft" (STS), "Soft-to-Hard (STH)" and "Hard". "Hard-to-Hard" (HTH) three different bonding processes. Among them, "soft to soft" is used for two soft materials, such as Optical Clear Adhhesive (OCA) and indium tin oxide film (ITO Film); between soft and hard materials, such as touch sensor module and The bonding of the cover glass is called "soft to hard"; in addition, the bonding of the "hard to hard" is the bonding of the cover glass and the liquid crystal display module (LCM).

In the lamination process, the touch sensor module is provided with a number of alignment marks on the surface of the cover plate, and the touch sensor module is attached to the cover plate according to the alignment marks to achieve the lamination and alignment accuracy; When the touch sensor module is attached to the LCD module on the side away from the cover, since the alignment mark cannot be observed, it is generally necessary to measure the offset between the LCD module and the cover, and then measure the cover The offset between the LCD module and the touch sensor module is calculated based on the two measurement results. Two measurement errors are introduced during the calculation process, resulting in the calculation The offset error is relatively large.

In addition, due to the high mesh repeatability of the metal mesh-like touch electrode layer and the small width of the metal mesh lines, the photosensitive coupling element (CCD) cannot be clearly aligned.

Therefore, there is a need to develop a manufacturing method of a display device and a display device to simplify the measurement process of the bonding offset between the touch sensor module and the display module, improve the calculation accuracy, and effectively solve the conventional technology The lack of existence.

One aspect of the present invention provides a method for manufacturing a display device, the display device includes a display surface for displaying image frames, and the display device is defined with a display area for displaying image frames and a non-display area not used for displaying image frames. In the display area, the manufacturing method of the display device includes the following steps: providing a cover plate and a display module, one side surface of the cover plate is provided with an opaque ink layer in the non-display area, the display module A black matrix that is not used for emitting light is provided, the black matrix has a part located in the display area; a first through hole is formed in the ink layer; and the first through hole is filled with infrared light for transmitting infrared rays Layer; make the touch electrode layer of the metal mesh of the touch module, make the first alignment mark on the touch electrode layer corresponding to the position of the first through hole; put the cover plate and the touch module Is attached to the display module, the touch module is attached between the cover plate and the display module; infrared rays are irradiated into the first through hole, and the infrared rays pass through the cover plate and The transmission of the infrared transmission layer, the reflection of the first alignment mark and the touch electrode layer are emitted from the first through hole; a first image is formed according to the infrared rays emitted from the first through hole , The first image includes a first pattern corresponding to the first alignment mark; records the first position data of the first pattern; lights the display module, and collects the display surface of the display device The second image, the second image includes a second pattern corresponding to the black matrix area; the second position data of the second pattern is recorded; according to the first position data and the second position The data calculates the first distance between the first pattern and the second pattern, and the bonding offset between the touch module and the display module.

Another aspect of the present invention provides a display device, which is defined with a display area for displaying image frames and a non-display area not used for displaying image frames. The display device includes a cover plate which is stacked in sequence and corresponds to one surface The non-display area is formed with an opaque ink layer, the ink layer is provided with a first through hole, and the first through hole is filled with an infrared transmission layer for transmitting infrared rays; the touch control module includes A touch electrode layer in the shape of a metal mesh for sensing touch operations, a side of the touch electrode layer facing the ink layer is provided with a first alignment mark corresponding to the first through hole; The display module is provided with a black matrix not used for emitting light toward one side of the cover plate, and the black matrix has a part located in the display area.

The manufacturing method of the display device and the display device obtain the position information of the first alignment mark and the black matrix by collecting the first image and the second image, thereby calculating the touch module and the The relative positional relationship between the display modules is described to further obtain the fitting offset between the touch module and the display module. The detection and calculation methods are simple and the accuracy is high.

S1-S11: steps

10, 20, 30: display device

101: display area

102: Non-display area

110, 310: cover

112: Ink layer

113, 213, 313: first through hole

213a: Through hole

215: second through hole

114: infrared transmission layer

120: Optical glue

130, 330: touch module

131: Touch electrode layer

132, 232, 332: first alignment mark

232a: registration mark

236, 336: second alignment mark

135: Parts

150: display module

152: black matrix

152a: the first matrix

152b: second matrix

p: area

q: Fitting area

FIG. 1 is a flowchart of a manufacturing method of a display device provided by the present invention.

FIG. 2 is a front view of a display device provided by an embodiment of the invention.

3 is a schematic cross-sectional view of the display device shown in FIG. 2 along the line III-III.

FIG. 4 is an enlarged view of region p in the display device shown in FIG. 2. FIG.

Fig. 5 is a schematic cross-sectional view of the region p shown in Fig. 4 along the line V-V.

Figure 6 is an enlarged view of region p in one embodiment.

FIG. 7 is a schematic cross-sectional view of the region p shown in FIG. 6 along the line VII-VII.

FIG. 8 is a front view of a display device provided in another embodiment of the invention.

Fig. 9 is a front view of a display device in an embodiment.

FIG. 10 is a front view of a touch module provided by another embodiment of the invention.

FIG. 11 is a front view of the display device assembled from the touch module in FIG. 10.

In order to be able to understand the foregoing objectives, features and advantages of the present invention more clearly, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the application and the features in the embodiments can be combined with each other if there is no conflict.

In the following description, many specific details are explained in order to fully understand the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention.

The present invention provides a method for manufacturing a display device and a display device. The adhesion offset between the display module and the touch module in the display device can be obtained by one measurement, the operation is simple, and the amount of The complex measurement error introduced by the second measurement helps to improve the measurement accuracy.

Example one

Please refer to FIG. 1, which is a flow chart of the manufacturing method of the display device provided by the present invention. The manufacturing method of the display device includes: S1: providing a cover plate and a display module, the cover plate is provided with an opaque ink layer in the non-display area, The display module is provided with a black matrix that is not used for emitting light, and the black matrix has a part located in the display area; S2: forming a first through hole in the ink layer; S3: filling the first through hole with an infrared transmitting layer for transmitting infrared rays ; S4: Make the metal mesh-shaped touch electrode layer of the touch module, make the first alignment mark on the touch electrode layer corresponding to the position of the first through hole; S5: Connect the cover plate, the touch module and The display module is attached, and the touch module is located between the cover plate and the display module; S6: irradiate infrared rays into the first through hole, the infrared rays pass through the cover plate and the infrared transmission layer, the first alignment mark and touch The reflection of the control electrode layer is emitted from the first through hole; S7: a first image is formed according to the infrared rays emitted from the first through hole, and the first image includes the first pattern corresponding to the first alignment mark; S8: recording The first position data of the first pattern; S9: light the display module, and collect a second image of the display surface of the display device, the second image includes the second pattern corresponding to the black matrix area; S10: record the second pattern The second position data; S11: Calculate the first distance between the first pattern and the second pattern according to the first position data and the second position data, and the bonding offset between the touch module and the display module .

Please refer to FIGS. 2 to 5 in conjunction with FIG. 1. FIG. 2 is a front view of a display device 10 provided by an embodiment of the present invention, and FIG. 3 is a schematic cross-sectional view of the display device 10 shown in FIG. 2 along line III-III. , 4 is an enlarged view of the region p in the display device 10 shown in FIG. 2, and FIG. 5 is a schematic cross-sectional view of the region p shown in FIG. 4 along the line V-V.

As shown in Figures 2 to 3, the display device 10 includes a display area 101 and a non-display area 102, where the display area 101 is used to display image frames; the non-display image 102 is not used to display image frames, and is correspondingly set to be opaque The ink to shading. The display area 101 in the present invention refers to the three-dimensional space used for displaying image frames in the multiple-layer structure of the display device 10, and the non-display area 102 refers to the three-dimensional space not used for displaying image frames in the multiple-layer structure of the display device 10 . The assembled display device 10 includes a cover 110, a touch module 130, and a display module 150 stacked in sequence.

In step S1, the cover 110, the touch module 130 and the display module 150 are provided. The provided cover 110 is a glass cover. In one embodiment, the cover may be a common glass cover or a quartz glass cover with relatively high infrared transmittance. The cover 110 includes parts located in the display area 101 and the non-display area 102. The cover 110 is provided with an opaque ink layer 112 on one side surface of the non-display area 102. The ink layer 112 can use black ink, white ink or other colors of ink, so that the cover 110 appears in the non-display area 102 accordingly. colour.

The provided touch module 130 includes a touch electrode layer 131 in the shape of a metal mesh. In one embodiment, the touch electrode layer 131 is in the shape of a sheet. In one embodiment, the touch electrode layer 131 is in a strip shape. The touch electrode layers 131 are arranged according to a preset rule.

The provided display module 150 can be a liquid crystal display module, which includes an area for emitting light and a black matrix 152 (BM) that is not used for emitting light. The black matrix 152 is arranged on the peripheral edge area of the display module 150 and enclosed In the shape of "mouth", the black matrix 152 has a part located in the display area 101, that is, when the display module 150 emits light, at least part of the black matrix 152 that does not emit light can be seen from the display area 101. The black matrix 152 may be a black photoresist, such as black resin.

In step S2, referring to FIGS. 4 to 5 in conjunction with FIG. 3, a first through hole 113 is formed in the ink layer 112, that is, no ink is provided at the position of the first through hole 113 on the surface of the cover 110, so that light can pass through the cover The board 110 and the first through hole 113. The first through hole 113 is located in the area p. The first through hole 113 is preferably an infrared (infra-red, IR) hole. The display device 10 is provided with an infrared sensing device corresponding to the IR hole to sense the distance between the user and the IR hole. . The first through hole 113 may be circular, square, rectangular, or other shapes.

In step S3, the infrared transmission layer 114 is filled in the first through hole 113. In this embodiment, the infrared transmission layer 114 is also formed on the side of the ink layer 112 away from the cover plate 110. It can be understood that the ink layer 112 is away from the cover plate. The infrared transmission layer 114 formed on the side 110 is not essential. Infrared transmission layer 114 is provided with ink for transmitting infrared rays and intercepting light of other wavebands, preferably IR (infra-red) ink, in one embodiment, the visible light (550nm) transmittance of IR ink is <5%, and the invisible light (850nm) ) Transmittance> 80%, that is, IR ink has a strong shielding effect on visible light, and incident visible light is basically unable to transmit. IR ink has a weak shielding effect on infrared rays and can transmit most of the incident infrared rays.

In step S4, the first alignment mark 132 can be made of a metal material. After the touch electrode layer 131 is formed, the first alignment mark 132 is formed on one side of the touch electrode layer 131. In a preferred embodiment, the first alignment mark 132 is made of the same metal material as the touch electrode layer 131 in the shape of a metal mesh, such as copper, silver or other metals, so that the touch electrode layer 131 can be processed during processing. In the process, the first alignment mark 132 is formed.

In this embodiment, the first alignment mark 132 has a ring shape, and the first alignment mark 132 can also have a circular shape, a square shape, a rectangular strip shape, an L shape, a cross shape, or other shapes that are easy to recognize on the touch electrode layer. .

Please refer to FIGS. 6-7. FIG. 6 is an enlarged view of region p in an embodiment, and FIG. 7 is a schematic cross-sectional structure diagram of region p shown in FIG. 6 along line VII-VII. The difference between this embodiment and the previous embodiments is that the touch module 130 is provided with a component 135 inside the first alignment mark 132 in a ring shape, and the component 135 also extends into the optical glue 120 and is at least partially accommodated in the optical glue 120 in. In an embodiment, the component 135 may also be disposed at other positions on the touch module 130 corresponding to the first through hole 113. The component 135 may be a light sensing device or other devices.

As shown in FIGS. 3-5, in step S5, the surface of the cover 110 on the side where the infrared transmission layer 114 is attached is bonded to the touch module 130 with optical adhesive (OCA) 120 to form the side of the first alignment mark 132 surface. The infrared rays pass through the cover 110, the infrared transmission layer 114, and the optical glue 120 in sequence to irradiate the first alignment mark 132 and the touch electrode layer 131 around the first alignment mark 132. The surface of the touch module 130 away from the first alignment mark 132 is bonded to the light-emitting surface of the display module 150. In one embodiment, the touch module 130 and the display module 150 are pasted by optical adhesive Together.

After step S5, the bonding offset between the touch module 130 and the display module 150 can be measured, and FW compensation has been performed.

In step S6, infrared rays are irradiated into the first through hole 113. Since the cover plate 110, the infrared transmission layer 114, and the optical glue 120 have little shielding effect on the infrared rays, most of the infrared rays provided can be irradiated to the first alignment mark 132 and The touch electrode layer 131 around the first alignment mark. Used to provide infrared The line device can be a CCD (photosensitive coupling component) tester. The CCD tester is used to emit detection light and use the collected light to form an image, and perform distance measurement and corresponding calculations in the obtained image.

In step S7, a CCD tester is used to collect the infrared rays reflected by the touch electrode layer 131 and the first alignment mark 132 and form a first image. The first image includes a first pattern corresponding to the first alignment mark 132. A pattern corresponds to the shape of the first alignment mark 132 and is easily recognizable in the first image including the touch electrode layer 131.

Step S8: Record the first position data of the first pattern. The first position data may be the coordinates of a positioning point in the first pattern in the first image, and the positioning point may be a geometric center of the first pattern, a positioning point on an edge, or positioning points selected by other positions.

In step S9, the display module 150 is turned on. In a preferred embodiment, the display module 150 displays a bright field image, so that the black matrix 152 can be clearly observed in the display area 101, thereby reducing the The difficulty of detecting the second pattern.

Step S10: Record the second position data of the second pattern. The second pattern corresponds to the shape of the black matrix 152 in the display area 101. As shown in FIG. 2, the second pattern is in the shape of a "mouth". The black matrix 152 includes two first matrices. 152a and two second matrices 152b, the two first matrices 152a are parallel to each other, the two second matrices 152b are parallel to each other, and the first matrix 152a and the second matrix 152b are vertically connected. The first matrix 152a includes first marking lines, and the second matrix 152b includes second marking lines, and the first marking lines and the second marking lines are not parallel. The second position data includes the coordinate value of the first marking line in the second image, and/or the coordinate value of the second marking line in the second image.

Step S11: Calculate the first distance between the first pattern and the second pattern according to the first position data and the second position data, determine whether the first distance falls within a preset range, and obtain the touch module according to the first distance The bonding offset between the touch module 130 and the display module 150. In one embodiment, the difference between the first distance and the theoretical distance is the bonding offset between the touch module 130 and the display module 150. The amount of displacement, wherein the theoretical distance is the distance between the first alignment mark 132 confirmed before the lamination and the corresponding position of the second position data.

The first distance includes a first sub-distance and a second sub-distance, wherein the first sub-distance is the distance between the first pattern and the first marking line, and the second sub-distance is the distance between the first pattern and the second marking line The distance, according to the first sub-distance and the second sub-distance, can accurately locate the position of the first alignment mark 132 relative to the display module 150, and calculate the bonding between the touch module 130 and the display module 150 Partial The amount of shift is beneficial to improve the positioning accuracy of the first alignment mark 132, thereby improving the accuracy of calculating the offset of the touch module 130 and the display module 150.

In an embodiment, after step S11, other structural members may be used to shield the first through hole 113, so that the display device 10 is more beautiful.

Example two

Please refer to FIG. 8, which is a front view of a display device 20 provided in another embodiment of the present invention. The main difference between the display device 20 and the display device 10 is that the ink layer is provided with a first through hole 213 and a second through hole 215, and an infrared transmission layer is provided inside the first through hole 213 and the second through hole 215. A first alignment mark 232 and a second alignment mark 236 are provided on the side of the electrode layer facing the ink layer, wherein the first alignment mark 232 is provided corresponding to the first through hole 213, and the second alignment mark 236 corresponds to the second Through holes 215 are provided. The various schemes applied to the first alignment mark are also applicable to the second alignment mark 236. The first through hole 213 and the first alignment mark 232 can be made according to steps S1-S4, and the second through hole 215 and the second alignment mark 236 can be made by the method of making the first through hole 213 and the first alignment mark 232 .

Specifically, before step S5, it further includes: forming a second through hole 215 in the ink layer; filling the second through hole 215 with an infrared transmission layer for transmitting infrared rays; accordingly, in this embodiment, step S4 also includes : Making a second alignment mark 236 on the touch electrode layer corresponding to the second through hole 215. The second alignment mark 236 is used to provide another reference point on the touch module to determine the position of the touch module relative to the display module. The first alignment mark 232, the second alignment mark 236, and the A marking line and a second marking line can uniquely determine the position of the touch module relative to the display module.

After step S5, it further includes: irradiating infrared rays to the second alignment mark 236. Specifically, the infrared rays are irradiated to the second alignment mark 236 and the surrounding touch electrode layer through the cover plate and the infrared transmission layer, and pass through the second alignment mark 236. The reflection of the positioning mark 236 and the surrounding touch electrode layer is emitted from the second through hole 215; the third image is formed according to the infrared rays emitted from the second through hole 215, and the third image includes the first image corresponding to the second alignment mark 236 Three patterns, the third pattern corresponds to the shape of the second alignment mark 236; the third position data of the third pattern is recorded; Step S11 also includes: calculating a third distance between the third pattern and the second pattern according to the third position data and the second position data, and calculating the distance between the touch module and the display module according to the first distance and the third distance The fit offset.

Please refer to FIG. 9, which is a front view of the display device 20 in an embodiment. The display device 20 is provided with more than two through holes 213a and more than two alignment marks 232a. The plural specific solutions applicable to the first through hole 213 are all applicable to the through hole 213a, and are applicable to the first alignment mark 232 The plural specific solutions are applicable to the alignment mark 232a, and the through hole 213a corresponds to the alignment mark 232a one to one. It can be understood that other numbers of through holes 213a and alignment marks 232a can also be provided.

Example three

Please refer to FIGS. 10-11. FIG. 10 is a front view of a touch module 330 provided by another embodiment of the present invention, and FIG. 11 is a front view of a display device 30 assembled from the touch module 330 in FIG. The main difference between the touch module 330 and the touch module 130 is that the touch module 330 includes a bonding area q for bonding the cover plate 310, and the second alignment mark 336 is disposed outside the bonding area q.

Specifically, as shown in FIG. 10, the touch module 330 is provided with a first alignment mark 332 and a second alignment mark 336, wherein the first alignment mark 332 is located in the non-display area, and the second alignment mark 336 is located Outside the bonding area q. As shown in FIG. 11, the first alignment mark 332 is matched with the first through hole 313 in the ink layer. After being attached, the second alignment mark 336 is not covered by the cover plate 310. A cutting tool can be used to adjust the second alignment. The mark 336 is cut off. Only one first through hole 313 is provided in the ink layer of the display device 30, which is suitable for the case where the conventional display device has only one IR hole, and has a wide application prospect.

In one embodiment, before step S5, it includes: dividing a bonding area on the surface of the touch module 330 for bonding the cover plate, and forming a second alignment mark 336 outside the bonding area; in step S11, Afterwards: cutting off the second alignment mark 336. Specifically, a blade can be used to cut the touch module 330 along the edge of the cover plate 310; or the cover plate of the display device 30 can be placed on the jig, the jig or the ink layer is provided with marking points, and the laser is used for cutting cut.

In another embodiment of cutting the touch module 330, before step S5, it includes: dividing a bonding area q on the surface of the touch module 330 for bonding the cover plate 310; outside the bonding area q Form the second alignment mark 336; use a cutting tool to make a cutting line along the edge of the bonding area q, such as using a die or laser; In step S5, the cover plate 310 is attached to the attaching area q; after step S11, the second alignment mark 336 located outside the attaching area q is torn off along the cutting line.

In the embodiment of the present invention, the position information of the first alignment mark and the black matrix is obtained from the collected image, thereby calculating the relative position relationship between the touch module and the display module, and further obtaining the touch module and The fitting offset of the display module is simple and accurate.

It should be noted that, within the scope of the spirit or basic features of the present invention, the specific solutions applicable to the various embodiments can also be mutually applicable. In order to save space and avoid repetition, the details are not repeated here.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the foregoing exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the scope of the appended invention patent application rather than the foregoing description, so it is intended to fall within The meaning of equivalent elements and all changes within the scope of the patent application for invention are included in the present invention. Any reference signs in the scope of the invention application should not be regarded as limiting the scope of the invention application. In addition, it is obvious that the word "include" does not exclude other units or steps, and the singular does not exclude the plural. The plural devices stated in the device request item can also be implemented by the same device or system by software or hardware. The first, second and other words are used to indicate names, but do not indicate any specific order.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements are made without departing from the spirit and scope of the technical solutions of the present invention.

S1-S11: steps

Claims (10)

A method for manufacturing a display device, the display device comprising a display surface for displaying an image frame, the display device is defined with a display area for displaying the image frame and a non-display area not for displaying the image frame, and its improvement The manufacturing method of the display device includes the following steps: providing a cover plate and a display module, one side surface of the cover plate is provided with an opaque ink layer in the non-display area, and the display module is provided There is a black matrix that is not used for emitting light, and the black matrix has a part located in the display area; a first through hole is formed in the ink layer; and an infrared transmission layer for transmitting infrared rays is filled in the first through hole Making a touch electrode layer in the shape of a metal mesh of the touch module, making a first alignment mark on the touch electrode layer corresponding to the position of the first through hole; connecting the cover and the touch The control module is attached to the display module, the touch module is attached between the cover plate and the display module; infrared rays are irradiated into the first through hole, and the infrared rays pass through the The transmission of the cover plate and the infrared transmission layer, the reflection of the first alignment mark and the touch electrode layer are emitted from the first through hole; and the first through hole is formed according to the infrared rays emitted from the first through hole. An image, the first image includes the first pattern corresponding to the first alignment mark; the first position data of the first pattern is recorded; the display module is lighted, and the display device is collected The second image of the display surface of the display surface, the second image includes a second pattern corresponding to the black matrix area; the second position data of the second pattern is recorded; according to the first position data and the The second position data calculates the first distance between the first pattern and the second pattern, and the bonding offset between the touch module and the display module. The method for manufacturing a display device according to claim 1, wherein, before the bonding the cover plate, the touch module, and the display module, the method includes: in the touch electrode layer Making a second alignment mark on the upper part; after the laminating the cover, the touch module and the display module, the method includes: irradiating infrared rays to the second alignment mark; according to the The infrared rays reflected by the touch electrode layer and the second alignment mark form a third image, and the third image includes a third pattern corresponding to the second alignment mark; Record the third position data of the third pattern; said calculating the first distance between the first pattern and the second pattern according to the first position data and the second position data, and the The bonding offset between the touch module and the display module further includes: calculating the distance between the third pattern and the second pattern according to the third position data and the second position data The third distance is to calculate the bonding offset between the touch module and the display module according to the first distance and the third distance. The method for manufacturing a display device according to claim 2, wherein before the irradiating infrared rays to the second alignment mark, the method includes: forming a second alignment mark on the ink layer corresponding to the position of the second alignment mark. Through holes; filling the second through holes with an infrared transmission layer for transmitting infrared rays; the irradiating infrared rays to the second alignment mark includes: infrared transmission through the cover plate and the infrared transmission layer And the reflection of the touch electrode layer and the second alignment mark is emitted from the second through hole. The method for manufacturing a display device according to any one of claims 1-3, wherein the calculation of the distance between the first pattern and the second pattern based on the first position data and the second position data The first distance and the bonding offset between the touch module and the display module include: calculating the first pattern according to the first position data and the second position data, respectively The first sub-distance and the second sub-distance between the first marking line and the second marking line in the second pattern, and the bonding offset between the touch module and the display module , The first marking line and the second marking line are not parallel. The manufacturing method of the display device according to claim 2, wherein the bonding the cover plate, the touch module and the display module includes: on the surface of the touch module Divide the bonding area for bonding the cover plate, the second alignment mark is located outside the bonding area; the calculating the bonding between the touch module and the display module The adjustment of the offset, then includes: cutting off the second alignment mark. The method for manufacturing a display device according to claim 5, wherein the dividing a bonding area on the surface of the touch module for bonding the cover plate, and then includes: Using a cutting tool to make a cutting line along the edge of the bonding area; bonding the cover plate in the bonding area; calculating the bonding deviation between the touch module and the display module The amount of movement then includes: tearing off the second alignment mark located outside the bonding area along the cutting line. A display device is defined with a display area used for displaying image frames and a non-display area not used for displaying image frames. The improvement lies in that the display device includes a cover plate which is sequentially stacked and arranged on one surface corresponding to the The non-display area is formed with an opaque ink layer, the ink layer is provided with a first through hole, and the first through hole is filled with an infrared transmission layer for transmitting infrared; the touch control module includes a sensor for sensing A metal grid-shaped touch electrode layer for measuring touch operation, one side of the touch electrode layer facing the ink layer is provided with a first alignment mark corresponding to the first through hole; the display module faces A black matrix not used for emitting light is provided on one side of the cover plate, and the black matrix has a part located in the display area. The display device according to claim 7, wherein the infrared transmission layer is provided with ink for transmitting infrared and intercepting light of other wavelength bands. The display device according to claim 7, wherein a second alignment mark is provided on a side of the touch electrode layer facing the ink layer. The display device according to claim 9, wherein the touch module includes a bonding area for bonding the cover plate, and the second alignment mark is disposed outside the bonding area.

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