CN116643436A

CN116643436A - Display screen and cutting method

Info

Publication number: CN116643436A
Application number: CN202310637677.5A
Authority: CN
Inventors: 吴锦坤; 吴汝健
Original assignee: Guangdong Zhihui Core Screen Technology Co ltd
Current assignee: Guangdong Zhihui Core Screen Technology Co ltd
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-08-25

Abstract

The application relates to a display screen and a cutting method. The display screen includes: a driving substrate provided with a display area; the VCOM wiring is arranged on the driving substrate and is arranged at the periphery of the display area; and the cutting alignment mark group is arranged on the VCOM wiring. According to the scheme provided by the application, the mode that the traditional cutting alignment mark groups are arranged at four corners of the display screen or around the display screen frame can be replaced, and then the cutting alignment mark groups can be manufactured on the VCOM wiring without increasing the width of the display screen frame, so that the driving substrate with large size can be flexibly cut, the display screen with any size can be obtained, the cutting process is simplified, and meanwhile, the processing cost is reduced.

Description

Display screen and cutting method

Technical Field

The application relates to the technical field of electronic paper display screens, in particular to a display screen and a cutting method.

Background

The electronic paper display screen is a display module made by electrophoresis technology, and comprises transparent conductive layer, drive base plate, electronic paper membrane and other parts. Among them, the driving substrate requires relatively precise wiring, and thus, it is necessary to manufacture the driving substrate by a plurality of processes such as exposure, development, etching, and the like using a mask. When electronic paper display screens with different sizes are needed, the mould and the flow sheet need to be manufactured again, so that the cost is high.

In the related art, through the cutting to the drive base plate in order to obtain the electronic paper display screen of equidimension, need set up the cutting when cutting and counterpoint mark to conveniently cut. However, most of the cutting alignment marks at the current stage are arranged at four corners of the display screen or around the frame of the display screen, and cannot be cut to obtain a display screen with smaller size in a mode of being arranged at the four corners of the display screen, so that the cutting flexibility is low, and the cutting procedure is complicated; the display screen frame is arranged around the display screen frame, so that the width of the display screen frame is required to be increased to place the alignment mark, and the processing cost is increased.

Disclosure of Invention

In order to solve or partially solve the problems in the related art, the application provides a display screen and a cutting method, which can manufacture a plurality of cutting alignment marks on VCOM wiring on a driving substrate without increasing the width of a frame of the display screen, and further flexibly cut the display screen, thereby simplifying the cutting process and reducing the processing cost.

The first aspect of the present application provides a display screen, comprising a driving substrate provided with a display area; the VCOM wiring is arranged on the driving substrate and is arranged at the periphery of the display area; and the cutting alignment mark group is arranged on the VCOM wiring.

The display screen also comprises a driving chip, and the driving chip is electrically connected with the display area.

The cutting alignment mark group comprises at least two transverse alignment marks, and at least two transverse alignment marks are arranged on the VCOM wiring in parallel.

The cutting alignment mark group comprises at least two longitudinal alignment marks, and at least two longitudinal alignment marks are arranged on the VCOM wiring in parallel.

The cutting alignment mark group comprises a first prompt mark and a second prompt mark, the first prompt mark and the second prompt mark are respectively arranged on the VCOM wiring, the first prompt mark is positioned on one side of the transverse alignment mark, and the second prompt mark is positioned on one side of the longitudinal alignment mark.

The cutting alignment mark group comprises a first cutting reference line, and the first cutting reference line is arranged on the transverse alignment mark.

The cutting alignment mark group comprises a second cutting reference line, and the second cutting reference line is arranged on the longitudinal alignment mark.

The transverse alignment mark is of a cross-shaped structure or a daily-shaped structure.

The longitudinal alignment marks are in a cross-shaped structure or a daily-shaped structure.

The second aspect of the present application provides a display screen cutting method, including: determining the cutting alignment mark group on the VCOM wiring of the display screen, and cutting the alignment mark group according to the cutting on the VCOM wiring so as to complete the cutting of the display area of the driving substrate.

The technical scheme provided by the application can comprise the following beneficial effects: through set up the cutting on the VCOM line and counterpoint mark group, replaced traditional cutting counterpoint mark group to set up the mode around four angles or the display screen frame of display screen, and then can be under the width that does not increase the display screen frame, made the cutting on the VCOM line and counterpoint mark group to carry out nimble cutting to the drive base plate that the size is big, can obtain the display screen of arbitrary size, when having simplified the cutting process, also reduced processing cost.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular descriptions of exemplary embodiments of the application as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the application.

FIG. 1 is a schematic diagram of a display screen according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a first indicator, a second indicator, and a cutting pair indicator set according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a dicing alignment mark group according to an embodiment of the present application;

FIG. 4 is a schematic diagram of another structure of a dicing alignment mark set according to an embodiment of the application;

fig. 5 is another schematic structural diagram of a dicing alignment mark group according to an embodiment of the application.

Detailed Description

Embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While embodiments of the present application are illustrated in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms "first," "second," "third," etc. may be used herein to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Referring to fig. 1, a display screen includes: the driving substrate 100, the VCOM wiring 200 and the cutting alignment mark group 300 are arranged on the driving substrate 100, the display area 110 is arranged on the driving substrate 100, the VCOM wiring 200 is arranged on the periphery of the display area 110, and the cutting alignment mark group 300 is arranged on the VCOM wiring 200.

Note that, the VCOM trace 200 is a trace of VCOM voltage, which is a reference voltage for movement of the electrophoretic particles, and has an important effect on stability of the electronic paper display. The electronic paper film is attached to the display area, so that the paper display effect can be realized, and the screen is electrically connected with the VCOM wiring 200. Further, the VCOM trace 200 is wrapped around the display area 110, and the dicing alignment mark set 300 is disposed on the VCOM trace 200, wherein at least one set of dicing alignment mark sets 300 is disposed. Therefore, the cutting alignment mark group 300 is arranged on the VCOM wiring 200, so that the traditional cutting alignment mark group 300 is replaced by being arranged at four corners of a display screen or around a display screen frame, and then the cutting alignment mark group can be manufactured on the VCOM wiring 200 without increasing the width of the display screen frame, so that the driving substrate 100 with a large size can be flexibly cut, the display screen with any size can be obtained, the cutting process is simplified, and meanwhile, the processing cost is reduced.

Referring to fig. 1, in an embodiment, the dicing alignment mark set 300 includes at least two lateral alignment marks 310, and the at least two lateral alignment marks 310 are disposed in parallel on the VCOM trace 200.

It should be noted that, the dicing counterpoint mark group 300 includes at least two lateral counterpoint marks 310, but the number of the lateral counterpoint marks 310 is two, and the lateral counterpoint marks 310 are used for facilitating the dicing device to perform the lateral dicing for the display screen. Further, the VCOM trace 200 is provided with a first mark area 210 and a second mark area 220, one of the two lateral alignment marks 310 is located in the first mark area 210, the other is located in the second mark area 220, and the two lateral alignment marks 310 are parallel to each other, i.e. the connection line of the center points of the two lateral alignment marks 310 is a straight line, so that the cutting equipment can conveniently cut.

For example, referring to fig. 1, eight lateral alignment marks 310 are disposed on the vcom trace 200, wherein four first mark regions 210 are disposed, four second mark regions 220 are disposed, and the four lateral alignment marks 310 of the first mark regions 210 are respectively parallel to the four lateral alignment marks 310 of the second mark regions 220 one by one. It should be further noted that, in the first marking area 210, when a plurality of transverse alignment marks 310 are provided, the distance between every two transverse alignment marks 310 is as close as possible, and the number of the transverse alignment marks 310 in the first marking area 210 is the same as the number of the transverse alignment marks 310 in the second marking area 220, so that the display screen can be cut according to the requirements of different products, thereby improving the cutting flexibility. Of course, the distance between the lateral alignment marks 310 may also be determined according to the VCOM specific routing method. Similarly, the arrangement of the longitudinal register 320 in the second marker region 220 is as described above. Further, the lateral alignment mark 310 is formed by etching the metal material on the VCOM wiring 200 through a mask.

Referring to fig. 1, in an embodiment, the dicing overlay mark set 300 includes at least two longitudinal overlay marks 320, and at least the longitudinal overlay marks 320 are disposed in parallel on the VCOM trace 200.

It should be noted that, the cutting alignment mark set 300 includes at least two longitudinal alignment marks 320, but the number of the longitudinal alignment marks 320 is two, and the number of the longitudinal alignment marks 320 may be different from the number of the transverse alignment marks 310, and the longitudinal alignment marks 320 are used for facilitating the cutting device to cut longitudinally for the display screen. Further, the VCOM trace 200 is provided with a third mark area 230 and a fourth mark area 240, one of the two longitudinal alignment marks 320 is located in the third mark area 230, the other is located in the fourth mark area 240, and the two longitudinal alignment marks 320 are parallel to each other, i.e. the connection line of the center points of the two longitudinal alignment marks 320 is a straight line, so that the cutting device can conveniently cut.

For example, referring to fig. 1, eight longitudinal marks 320 are disposed on the vcom trace 200, wherein four third mark areas 230 are disposed, four fourth mark areas 240 are disposed, and the four longitudinal marks 320 of the third mark areas 230 are respectively parallel to the four longitudinal marks 320 of the fourth mark areas 240 one by one.

It should be further noted that, in the third marking area 230, when a plurality of longitudinal alignment marks 320 are provided, the distance between every two longitudinal alignment marks 320 is as close as possible, so that the display screen can be cut according to the requirements of different products, thereby improving the cutting flexibility. Of course, the distance between the longitudinal alignment marks 320 may also be determined according to the VCOM specific routing manner, and the arrangement of the longitudinal alignment marks 320 in the fourth mark area 240 is the same as that described above. Further, the vertical alignment marks 320 are formed by etching away the metal material on the VCOM trace 200 through the mask.

In addition, the driving substrate 100 includes multiple metal layers, the VCOM voltage is used to perform the wiring between the multiple metal layers, and the horizontal alignment mark 310 and the vertical alignment mark 320 need to be completely exposed to the metal layers, so as to facilitate the searching of the dicing apparatus, i.e. the dicing alignment mark set 300 is exposed to the VCOM wiring 200, so as to facilitate the searching and dicing of the dicing apparatus. Further, the transverse alignment marks 310 and the longitudinal alignment marks 320 may be disposed on any metal layer, and only need to be exposed on the VCOM wiring 200, so that the positions of the transverse alignment marks 310 and the longitudinal alignment marks 320 on the metal layer can be flexibly set according to the requirements of different display screen sizes.

Referring to fig. 2, in an embodiment, the dicing alignment mark set 300 includes a first prompt mark and a second prompt mark, the first prompt mark and the second prompt mark are respectively disposed on the VCOM trace 200, the first prompt mark is located at one side of the lateral alignment mark 310, and the second prompt mark is located at one side of the longitudinal alignment mark 320.

It should be noted that the first indicator may be set according to the number of the horizontal alignment marks 310, and the second indicator may be set according to the number of the vertical alignment marks 320. Specifically, it is assumed that there are two lateral alignment marks 310 in the first mark region 210, two lateral alignment marks 310 are correspondingly disposed in the second mark region 220, a first indicator is disposed on one side of one of the lateral alignment marks 310 in the first mark region 210, and the same first indicator is disposed on one side of the lateral alignment mark 310 correspondingly disposed in parallel in the second mark region 220. The first indication mark of the other transversal alignment mark 310 in the first mark region 210 is different from the previous one, and the first indication mark is the same as the first indication mark of the other transversal alignment mark 310 in the corresponding parallel second mark region 220. The same is true for the longitudinal alignment marks 320 in the third mark region 230 and the fourth mark region 240. Further, the first prompt mark and the second prompt mark are etched on the metal layer of the VCOM routing 200 in the same mask etching manner, or may be etched on a metal layer different from the transverse alignment mark 310 or the longitudinal alignment mark 320, and only need to be exposed on the VCOM routing 200.

It should be further noted that the first prompt sign and the second prompt sign may be numerals, letters or other marking patterns, and by setting the first prompt sign and the second prompt sign, the cutting device can conveniently identify the first prompt sign and the second prompt sign when cutting, so as to cut according to a predetermined sequence, as shown in fig. 2, the numerals are shown. Further, the first cue flag and the second cue flag may be provided in plurality.

In one embodiment, the dicing registration set 300 includes a first dicing reference line disposed on the lateral registration 310; the dicing registration set 300 includes a second dicing reference line disposed on the longitudinal registration 320.

It should be noted that the first cutting reference line and the second cutting reference line are used to facilitate the cutting device to cut along the first cutting reference line or the second cutting reference line. Wherein, in a horizontal alignment mark 310 and a vertical alignment mark 320, a first cutting reference line and a second cutting reference line are provided, and by providing a plurality of first cutting reference lines or second cutting reference lines, the cutting precision can be improved, and meanwhile, the cutting requirements of various display screen sizes can be adapted, so that the cutting has more flexibility.

For a better illustration of the first and second cutting reference lines, please refer to fig. 3 and 4, specifically, the transverse alignment 310 is in a "cross" or "sun" structure; the longitudinal index 320 is in a "cross" or "day" configuration.

It should be noted that, the transverse alignment marks 310 and the longitudinal alignment marks 320 may have a cross-shaped structure or a "sun-shaped structure, but are not limited to this structure. Specifically, when the cross structure is adopted, the cross in the cross structure can be arranged in a hollowed-out manner, and the area around the cross can be hollowed-out, as shown in fig. 3. Wherein the two vertical directions of the cross may be a first cutting reference line and a second cutting reference line. For another example, when the "day" structure is adopted, the "day" structure on the right side of fig. 4 may be disposed on the third marking area 230 and the fourth marking area 240, the "day" structure on the left side may be disposed on the first marking area 210 and the second marking area 220, and the first cutting reference line and the second cutting reference line may be a horizontal stroke and a vertical stroke of the "day" word, where a group of patterns are disposed on the upper left and the upper right, and a group of patterns are disposed on the lower left and the lower right. Still more particularly, the present application also provides the structure as shown in fig. 5, in which the upper left pattern may be disposed in the first marking region 210, the lower left pattern may be disposed in the second marking region 220, the upper right pattern may be disposed in the third marking region 230, and the lower right pattern may be disposed in the fourth marking region 240, and the first and second cutting reference lines may be thinner sides of the patterns.

In addition, the above structure can be adopted for the transverse alignment marks 310 and the longitudinal alignment marks 320 at the same time, and it is only necessary to satisfy the requirement that the structures of the transverse alignment marks 310 or the longitudinal alignment marks 320 which are arranged in parallel in the two corresponding mark areas are the same. Of course, the lateral alignment mark 310 or the longitudinal alignment mark 320 of the present application is not limited to the above-described structure.

Referring to fig. 1 again, the display screen further includes a driving chip 400, and the driving chip 400 is electrically connected to the display area 110.

It should be noted that, the driving chip 400 is used for electrically connecting the display area 110, and the set position avoids the extension line of the longitudinal alignment mark 320, so that the whole display screen is prevented from being damaged by cutting.

The embodiment also provides a display screen cutting method, which is applied to a display screen, and is used for determining the cutting alignment mark group 300 on the VCOM routing 200 of the display screen, and cutting the alignment mark group 300 according to the cutting on the VCOM routing 200 so as to complete the cutting of the display area of the driving substrate 100.

It should be noted that, the cutting device obtains the position of the cutting alignment mark group 300 by photographing, and then determines the position of the cutting alignment mark group 300 and performs the cutting process. For example, in one embodiment, the photographing device on the cutting apparatus recognizes the first indicator on one side of the horizontal alignment mark 310 and the second indicator on one side of the vertical alignment mark 320, respectively, that is, by recognizing letters or Arabic numerals, and performs sequential cutting.

The foregoing description of embodiments of the application has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A display screen, comprising:

a driving substrate provided with a display area;

the VCOM wiring is arranged on the driving substrate and is arranged at the periphery of the display area; a kind of electronic device with high-pressure air-conditioning system

And the cutting alignment mark group is arranged on the VCOM wiring.

2. A display screen as recited in claim 1, wherein: the display screen also comprises a driving chip, and the driving chip is electrically connected with the display area.

3. A display screen as recited in claim 1, wherein: the cutting alignment mark group comprises at least two transverse alignment marks, and at least two transverse alignment marks are arranged on the VCOM wiring in parallel.

4. A display screen as claimed in claim 3, wherein: the cutting alignment mark group comprises at least two longitudinal alignment marks, and at least two longitudinal alignment marks are arranged on the VCOM wiring in parallel.

5. A display screen as recited in claim 4, wherein: the cutting alignment mark group comprises a first prompt mark and a second prompt mark, the first prompt mark and the second prompt mark are respectively arranged on the VCOM wiring, the first prompt mark is positioned on one side of the transverse alignment mark, and the second prompt mark is positioned on one side of the longitudinal alignment mark.

6. A display screen as recited in claim 4, wherein: the cutting alignment mark group comprises a first cutting reference line, and the first cutting reference line is arranged on the transverse alignment mark.

7. A display screen as recited in claim 4, wherein: the cutting alignment mark group comprises a second cutting reference line, and the second cutting reference line is arranged on the longitudinal alignment mark.

8. A display screen as recited in claim 6, wherein: the transverse alignment mark is of a cross-shaped structure or a daily-shaped structure.

9. The display screen of claim 7, wherein: the longitudinal alignment marks are in a cross-shaped structure or a daily-shaped structure.

10. A display screen cutting method applied to a display screen as claimed in any one of claims 1 to 9, characterized in that:

determining the cutting alignment mark group on the VCOM wiring of the display screen;

and cutting the alignment mark group according to the cutting on the VCOM wiring so as to complete the cutting of the display area of the driving substrate.