CN111300985A - Cover plate, display screen assembly, mobile terminal and manufacturing method of cover plate - Google Patents
Cover plate, display screen assembly, mobile terminal and manufacturing method of cover plate Download PDFInfo
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- CN111300985A CN111300985A CN201811511172.XA CN201811511172A CN111300985A CN 111300985 A CN111300985 A CN 111300985A CN 201811511172 A CN201811511172 A CN 201811511172A CN 111300985 A CN111300985 A CN 111300985A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
- B41J3/407—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for marking on special material
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0279—Improving the user comfort or ergonomics
- H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
Abstract
The application relates to a cover plate, a display screen assembly, a mobile terminal and a manufacturing method of the cover plate, wherein the manufacturing method of the cover plate comprises the following steps: step a, manufacturing a color effect graph with color gradually changed at the edge of the cover plate, and analyzing the ink jet amount through the color effect graph; b, fixing the substrate, and spraying ink on the edge of the substrate to form a pattern which is the same as the color effect graph to manufacture the cover plate; wherein, the ink comprises cyan ink, magenta ink and yellow ink, so that the pattern at the edge of the cover plate presents a color gradient effect. According to the method, the color effect graph with the color gradual change at the edge of the cover plate is manufactured by software, the ink jet amount of the ink with various colors is analyzed, and the ink with the specific color is sprayed to the specific position at the edge of the substrate in a fixed amount, so that the color gradual change of the pattern at the edge of the substrate is uniform, the phenomenon of color sudden change is avoided, the appearance expressive force of the cover plate is improved, and the effect is better than that of a conventional single-color pattern or a pattern with the color sudden change.
Description
Technical Field
The present application relates to the field of mobile terminal technologies, and in particular, to a cover plate, a display screen assembly, a mobile terminal, and a method for manufacturing the cover plate.
Background
The edge of a cover plate of a mobile terminal such as a mobile phone or a flat panel is provided with a frame-shaped pattern, the color of the pattern is single or has abrupt change, and the appearance expressive force is poor.
Disclosure of Invention
In a first aspect of the present application, an embodiment provides a method for manufacturing a cover plate, so as to solve the technical problem that a color of a pattern at an edge of the cover plate is single or has a color abrupt change.
A manufacturing method of a cover plate comprises the following steps:
step a, manufacturing a color effect graph with color gradually changed at the edge of the cover plate, and analyzing the ink jet amount through the color effect graph; and
b, fixing the substrate, and spraying ink on the edge of the substrate to form a pattern which is the same as the color effect graph to manufacture the cover plate;
wherein the ink comprises cyan ink, magenta ink and yellow ink, so that the pattern on the edge of the cover plate presents a color gradient effect.
According to the manufacturing method of the cover plate, the color effect graph with the color gradual change at the edge of the cover plate can be manufactured by adopting software, the ink jet quantity of ink with various colors is analyzed, and quantitative ink with a specific color is sprayed at a specific position at the edge of the substrate to manufacture the pattern with the color gradual change effect, which is the same as the color effect graph, so that the color gradual change at the edge of the substrate is uniform, the phenomenon of color sudden change is avoided, the appearance expressive force of the cover plate is improved, and the effect is better than that of a conventional single-color pattern or a pattern with color sudden change.
In one embodiment, the step a includes that the color effect map includes a plurality of color blocks, the ratio of cyan ink, magenta ink and yellow ink in a single color block is analyzed, and the ink jetting amount of the cyan ink, the magenta ink and the yellow ink required by each color block is determined.
In one embodiment, step b includes ejecting ink with a head of an inkjet printer, where the cyan ink, the magenta ink, and the yellow ink each correspond to at least one head, and the heads are capable of moving along an edge of the substrate.
In one embodiment, step b includes ejecting ink including black ink, LC ink, LM ink, and LY ink using a head of an inkjet printer, where each color of ink corresponds to at least one head, and the heads are capable of moving along an edge of the substrate.
In one embodiment, the diameter of the liquid drop ejected by the ejection head is not more than 20 um.
In one embodiment, step c is included, and the cover plate obtained in step b is subjected to baking curing.
In one embodiment, the method comprises a step d of performing laser etching on the cover plate obtained in the step c, removing burrs at the edges of the pattern, and performing ultrasonic cleaning.
In a second aspect of the present application, an embodiment provides a cover plate to solve the above technical problem that the pattern at the edge of the cover plate has a single color or has a color abrupt change.
A cover plate is manufactured by a cover plate manufacturing method.
The cover plate comprises a substrate and patterns positioned on the substrate, the color effect graph with the color gradually changed at the edge of the cover plate is manufactured by adopting software, the ink jet amount of ink with various colors is analyzed, and quantitative ink with specific color is sprayed at specific positions at the edge of the substrate to manufacture the patterns with the color gradually changed effect, which are the same as the color effect graph, so that the color gradually changed at the edge of the substrate is uniform, the phenomenon of color mutation is avoided, the appearance expressive force of the cover plate is improved, and the effect is better than that of the conventional single-color pattern or the pattern with the color mutation.
In a third aspect of the present application, an embodiment provides a display screen assembly to solve the technical problem that the color of the pattern at the edge of the cover plate of the display screen assembly is single or has abrupt color change.
A display screen assembly comprises a cover plate and a display element, wherein the cover plate covers the display element.
The display screen assembly comprises the cover plate and the display element, the color effect graph with the color gradually changed at the edge of the cover plate is manufactured by adopting software, the ink jet quantity of ink with various colors is analyzed, quantitative ink with specific color is sprayed at the specific position of the edge of the substrate, the pattern with the color gradually changed effect, which is the same as the color effect graph, is manufactured, the color gradually changed at the edge of the substrate is uniform, the phenomenon of color mutation is avoided, the appearance expressive force of the display screen assembly is improved, and the display screen assembly has better effect than the conventional single color pattern or the pattern with the color mutation.
In a fourth aspect of the present application, an embodiment provides a mobile terminal to solve the technical problem that the color of the pattern at the edge of the cover plate of the mobile terminal is single or has abrupt color change.
A mobile terminal includes a cover plate.
The mobile terminal comprises the cover plate, the color effect graph with the color gradual change at the edge of the cover plate is manufactured by adopting software, the ink jet amount of ink with various colors is analyzed, quantitative ink with specific color is sprayed at the specific position of the edge of the substrate, the pattern with the color gradual change effect, which is the same as the color effect graph, is manufactured, the color gradual change at the edge of the substrate is uniform, the phenomenon of color sudden change is avoided, the appearance expressive force of the mobile terminal is improved, and the effect is better than that of a conventional single color pattern or a pattern with color sudden change.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a perspective view of a mobile terminal according to an embodiment;
FIG. 2 is a front view of a cover plate of the mobile terminal shown in FIG. 1;
FIG. 3 is an enlarged view of a single color patch of the pattern at the edge of the cover shown in FIG. 2;
FIG. 4 is an enlarged view of another single patch of the pattern at the edge of the cover plate shown in FIG. 2;
FIG. 5 is an enlarged view of yet another single patch of the pattern at the edge of the cover plate shown in FIG. 2;
FIG. 6 is a flow chart illustrating the fabrication of the cover plate of FIG. 2 in one embodiment;
fig. 7 is a flow chart of the manufacturing process of the cover plate shown in fig. 2 in another embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
As used herein, "terminal device" refers to a device capable of receiving and/or transmitting communication signals including, but not limited to, devices connected via any one or more of the following connections:
(1) via wireline connections, such as via Public Switched Telephone Network (PSTN), Digital Subscriber Line (DSL), Digital cable, direct cable connections;
(2) via a Wireless interface means such as a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter.
A terminal device arranged to communicate over a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:
(1) satellite or cellular telephones;
(2) personal Communications Systems (PCS) terminals that may combine cellular radiotelephones with data processing, facsimile, and data communications capabilities;
(3) radiotelephones, pagers, internet/intranet access, Web browsers, notebooks, calendars, Personal Digital Assistants (PDAs) equipped with Global Positioning System (GPS) receivers;
(4) conventional laptop and/or palmtop receivers;
(5) conventional laptop and/or palmtop radiotelephone transceivers, and the like.
As shown in fig. 1, in an embodiment, a mobile terminal 1 is provided, and the mobile terminal 1 may be a smart phone, a computer or a tablet. The mobile terminal 1 comprises a display screen assembly, a shell 20 and a circuit board, wherein the display screen assembly is fixed on the shell 20, the display screen assembly and the shell 20 form an external structure of the mobile terminal 1, the circuit board is located inside the mobile terminal 1, and electronic elements such as a controller, a storage unit, a power management unit and a baseband chip are integrated on the circuit board. The display screen assembly is used for displaying pictures or fonts, and the circuit board can control the operation of the mobile terminal 1.
As shown in fig. 2, in one embodiment, the display screen assembly includes a cover plate 10 and a display element, and the cover plate 10 covers the display element. The display element may be an OLED or LED, and the display element is operable to display a picture or font under control of the circuit board. The cover plate 10 may have a planar structure or a 3D structure for covering a side of the display element away from the housing 20, so as to protect the display element. The cover 10 may be a touch control panel glass, so that a user can operate the mobile terminal 1 by touching the cover 10. The display panel assembly includes an effective display area (AA area) and a black border area (BM area), a portion of the cover plate 10 located in the effective display area (AA area) is in a transparent state, and a pattern 200 is disposed on the portion of the cover plate 10 located in the black border area (BM area). The pattern 200 is formed by a gradual change of color, the pattern 200 is located at the very narrow edge of the cover plate 10, and the pattern 200 includes a plurality of colors, the form of which is gradually changed from one color to another color, preventing abrupt change of color. In another embodiment, the pattern 200 may also be a pattern 200 with a color gradient of pictures or characters.
As shown in fig. 2-5, in one embodiment, the pattern 200 is formed by cyan ink (C)210, magenta ink (M)220, and yellow ink (Y) 230. The cyan ink (C)210, the magenta ink (M)220 and the yellow ink (Y)230 are prepared by mixing corresponding color paste and water, and the mass percentage concentration is 4-8%. When the pattern 200 is produced, a high-precision head is used to eject ink so that the droplet diameter of the ink is not more than 20 um. The pattern 200 includes a plurality of color blocks, a single color block can include any one of the droplets of the color ink according to the requirement, and the gradual change of the color is realized by controlling the proportion of the droplets of the different color inks in the single color block, so as to prevent the color from changing suddenly. It will be appreciated that any color may be formed by the superposition of different colored inks, resulting in a colorful pattern 200.
In another embodiment, the pattern 200 is made of cyan ink (C)210, magenta ink (M)220, yellow ink (Y)230, black ink (K), low-concentration cyan ink (LC ink), low-concentration red ink (LM ink), and low-concentration yellow ink (LY ink). The cyan ink (C)210, the magenta ink (M)220, the yellow ink (Y)230 and the black ink (K) are prepared by mixing corresponding color paste and water, and the mass percentage concentration is 4-8%; the low-concentration cyan ink (LC ink), the low-concentration red ink (LM ink) and the low-concentration yellow ink (LY ink) are prepared by mixing corresponding color paste and water, and the mass percentage concentration is 1-3%. When the pattern 200 is produced, a high-precision head is used to eject ink so that the droplet diameter of the ink is not more than 20 um. The pattern 200 includes a plurality of color blocks, a single color block can include any one of the droplets of the color ink according to the requirement, and the gradual change of the color is realized by controlling the proportion of the droplets of the different color inks in the single color block, so as to prevent the color from changing suddenly. It will be appreciated that any color may be formed by the superposition of different colored inks, resulting in a colorful pattern 200.
As shown in fig. 6, in an embodiment, a method for manufacturing a cover plate 10 is provided, including:
step a, manufacturing a color effect graph with color gradual change at the edge of the cover plate 10, and analyzing the ink jet amount through the color effect graph; and
b, fixing the substrate 100, and spraying a certain amount of ink with a specific color at a specific position on the edge of the substrate 100 to form a pattern 200 which is the same as the color effect diagram, thereby manufacturing the cover plate 10;
wherein the inks include cyan ink 210, magenta ink 220, and yellow ink 230, so that the pattern 200 on the edge of the cover plate 10 presents a color gradient effect.
In one embodiment, step a includes using software to make a color effect map of the edge of the cover plate 10. The color effect map of the edge of the cover plate 10 is generally made by photoshop or Croeldraw software, and in another embodiment, the color effect map of the edge of the cover plate 10 can be made by other software. The color effect map includes a plurality of color blocks, and the amount of ink jet of the specific color ink required for a specific position of the cover plate 10 is determined by analyzing the proportions of the cyan ink (C)210, the magenta ink (M)220, and the yellow ink (Y)230 in a single color block, i.e., by analyzing the CMY parameters in a single color block. In the color gradual change area of the color effect graph, the gradual change of the color is realized by controlling the gradual increase or decrease of the proportion of the liquid drops of the different color inks, and the sudden change of the color is prevented.
In another embodiment, to improve the fineness of the color, the inks further include a black ink, a low-density cyan ink, a low-density red ink, and a low-density yellow ink. In step a, the ink amount of the ink of the specific color to be ejected at the specific position of the cover plate 10 is determined by analyzing the proportion of the ink of each color in a single color block in the color effect diagram, that is, analyzing the CMYK parameters in the single color block.
In one embodiment, step b includes preparing the glass substrate 100, cleaning and fixing. The color effect graph made by software is displayed on the substrate 100 by an ink-jet printing method, and the cover plate 10 comprising the substrate 100 and the pattern 200 is manufactured. And (3) performing ink-jet printing by using a high-precision ink-jet printer. The inkjet printer includes at least 3 heads, and cyan ink 210, magenta ink 220, and yellow ink 230 correspond to at least one of the heads, respectively. The head is movable along the edge of the substrate 100, and it is understood that the head is movable and ejects ink according to a program set after analyzing the color effect map by software, thereby forming the pattern 200 on the edge of the substrate 100. The diameter of the liquid drop ejected by the nozzle is not more than 20um, and in a single color block of the pattern 200, the ink can include ink of one color or ink of multiple colors, and the ink of different colors can be overlapped to form ink of other colors. And c, jetting by the jet head according to the proportion of the ink with each color in the single color block determined after the software analyzes the color effect graph in the step a so as to form the pattern 200 identical to the color effect graph.
In another embodiment, to improve the fineness of the color, the inks further include a black ink, a low-density cyan ink, a low-density red ink, and a low-density yellow ink. A high-precision inkjet printer including at least 7 heads is used, and cyan ink 210, magenta ink 220, yellow ink 230, black ink, low-density cyan ink, low-density red ink, and low-density yellow ink correspond to at least one head, respectively. The head is movable along the edge of the substrate 100, and it is understood that the head is movable and ejects ink according to a program set after analyzing the color effect map by software, thereby forming the pattern 200 on the edge of the substrate 100. The diameter of the liquid drop ejected by the nozzle is not more than 20um, and in a single color block of the pattern 200, the ink can include ink of one color or ink of multiple colors, and the ink of different colors can be overlapped to form ink of other colors. And c, jetting by the jet head according to the proportion of the ink with each color in the single color block determined after the software analyzes the color effect graph in the step a so as to form the pattern 200 identical to the color effect graph.
As shown in fig. 7, in an embodiment, including step c, baking and curing the cover plate 10 obtained in step b, the adjacent ink droplets can smoothly transit, and the adjacent ink dots can be connected together, rather than forming single discontinuous ink dots between the single ink droplets, and have a better continuous shape. The pattern 200 is thus fixed on the substrate 100, preventing the pattern 200 from being changed by touch.
As shown in fig. 7, in an embodiment, including step d, when the ink is sprayed on the substrate 100 by the nozzle, a part of the ink amount is splashed outwards when the liquid drop of the ink contacts the surface of the substrate 100, so that the edge of the pattern 200 generates a saw-tooth phenomenon, and the laser etching is performed on the cover plate 10 to remove the burrs at the edge of the pattern 200, so that the edge of the pattern 200 is flat. And then, carrying out ultrasonic cleaning on the cover plate 10 to obtain the cover plate 10 with the required edge provided with the color gradient pattern 200.
And (3) making a color effect graph by adopting software, and analyzing the proportion of the liquid drops of the ink with various colors in a single color block to form a set program. The nozzle of the high-precision ink-jet printer moves and sprays ink according to a set program, the liquid drop of the ink can be controlled to be not more than 20um, the pattern 200 with gradually changed colors can be manufactured at the edge of the substrate 100, the appearance expressive force of the mobile terminal 1 is increased, and the effect is better than that of the conventional black pattern 200.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method for manufacturing a cover plate is characterized by comprising the following steps:
step a, manufacturing a color effect graph with color gradually changed at the edge of the cover plate, and analyzing the ink jet amount through the color effect graph; and
b, fixing the substrate, and spraying ink on the edge of the substrate to form a pattern which is the same as the color effect graph to manufacture the cover plate;
wherein the ink comprises cyan ink, magenta ink and yellow ink, so that the pattern on the edge of the cover plate presents a color gradient effect.
2. The method for manufacturing a cover plate according to claim 1, wherein the step a includes that the color effect map includes a plurality of color blocks, and the ratio of cyan ink, magenta ink, and yellow ink in each color block is analyzed to determine the ink jetting amount of the cyan ink, magenta ink, and yellow ink required by each color block.
3. The method of claim 1, wherein the step b comprises ejecting ink from a head of an inkjet printer, wherein the cyan ink, the magenta ink, and the yellow ink each correspond to at least one head, and the heads are capable of moving along the edge of the substrate.
4. The method for manufacturing a cover plate according to claim 1, wherein the step b comprises ejecting ink by using a head of an inkjet printer, wherein the ink comprises black ink, LC ink, LM ink and LY ink, and each color of ink corresponds to at least one head, and the heads can move along the edge of the substrate.
5. The method for manufacturing a cover plate according to claim 3 or 4, wherein the diameter of the liquid drop ejected by the ejection head is not more than 20 um.
6. The method for manufacturing a cover plate according to claim 1, comprising a step c of baking and curing the cover plate obtained in the step b.
7. The method for manufacturing the cover plate according to claim 5, wherein the method comprises a step d of performing laser etching on the cover plate obtained in the step c, removing burrs at the edges of the pattern, and performing ultrasonic cleaning.
8. A cover plate, characterized in that it is manufactured by the method of manufacturing a cover plate according to any one of claims 1 to 7.
9. A display screen assembly comprising the cover of claim 8 and a display element, the cover covering the display element.
10. A mobile terminal characterized by comprising the cover plate of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811511172.XA CN111300985A (en) | 2018-12-11 | 2018-12-11 | Cover plate, display screen assembly, mobile terminal and manufacturing method of cover plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811511172.XA CN111300985A (en) | 2018-12-11 | 2018-12-11 | Cover plate, display screen assembly, mobile terminal and manufacturing method of cover plate |
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| CN111300985A true CN111300985A (en) | 2020-06-19 |
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| CN201811511172.XA Pending CN111300985A (en) | 2018-12-11 | 2018-12-11 | Cover plate, display screen assembly, mobile terminal and manufacturing method of cover plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114179529A (en) * | 2021-09-16 | 2022-03-15 | 福建省飞阳光电股份有限公司 | Printing equipment for glass screen and printing method thereof |
| CN114379264A (en) * | 2021-12-07 | 2022-04-22 | 深圳群宾精密工业有限公司 | Intelligent ink-jet method for 3D vision-guided mobile phone glass screen and related equipment |
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