TW201642071A - Modified outer cover of touch control panel and manufacturing method thereof - Google Patents

Abstract

The invention discloses a modified outer cover of touch control panel and a manufacturing method thereof. The manufacturing method comprises preparing a transparent substrate having a visual area, coating a first ink layer on the transparent substrate, stacking a plurality of second ink layers on the first ink layer in order, and removing the first ink layer on the visual area of the transparent substrate and the plurality of second ink layers on the first ink layer through laser. By adopting the manufacturing method, ink segment difference caused by printed different ink layers can be removed through laser, so the visual area on the transparent substrate cannot be covered by different ink layers, halation on the transparent substrate caused by that light penetrates ink layers having different thicknesses can be prevented, so the appearance and the visual sense can be improved.

Description

Improved cover for touch panel and its process

The invention relates to the technical field of a touch panel cover, in particular to a touch panel which is covered on a cover by stacking a plurality of layers of ink, and then the ink stacked on the visible area of the cover is removed by laser. Improved cover and process resulting from the improved cover of the touch panel.

With the rapid development of technology, various information devices are constantly seeking new changes. For example, traditional mobile phones can be combined with cameras, micro-processing devices and touch-screen LCD panels, so that mobile phones can be transformed into smart phones with almost one hand, and various tablets. Computers, ultra-thin notebooks, and satellite navigation are all like smart phones. In addition to keyboard or mouse input or manipulation, the use of touch technology to manipulate information devices is currently a universal technology. The touch panel has a user-friendly and intuitive input interface. Users of all ages can directly replace the traditional mouse or keyboard input device with a finger or a stylus, so the touch panel Demand is increasingly important in the market.

The touch panel has a viewing area (VA) and an area other than the visible area, which can be called a non-visible area, and the non-visible area can also be called a bezel; the front cover or the outer cover of the touch panel (Window Cover of Touch) Panel) is called CG (Cover Glass), which is located at the outermost layer of the Touch Display Module (TDM), which is the location where the user can directly touch; in general, CG has a printing brand (Logo) , Decoration and Protection to protect the functionality of the touch panel.

Referring to the first embodiment of the present invention, the front cover 10 of the conventional touch panel has a protective glass 12, and a visible area 14 is disposed on the surface thereof, and the upper surface of the visible area 14 of the protective glass 12 is sequentially stacked. The different ink layers 16a-16e are covered with a black ink layer 18 at the top, and the most common color of the front cover 10 is black or white, and the white color needs to consider the color of each layer of ink and the penetration resistance of the light. It is more difficult to produce in black, and the stacking structure of each layer of ink layers 16a-16e is relatively complicated. Since the ink layers 16a to 16e of each layer must have tolerances in printing, a gap may occur between each layer of printing. Therefore, the ink layer 16a covering the protective glass 12 is likely to cause light leakage, so generally implementation is performed. The manner in which black ink is printed on the ink layer 16a to prevent light leakage occurs. However, once light leakage occurs, when the thickness of the printing ink is insufficient or there is a backlight, the photo hole, the sound hole or the touch panel on the front cover 10 may be prone to halo, especially if it is required. White multi-layer printed parts are often prone to poor visual effects.

Therefore, in view of the lack of the prior art, the present invention provides an improved cover for a touch panel and a process thereof for improving the poor visual effect caused by the halo phenomenon.

The main object of the present invention is to provide an improved cover for a touch panel and a process thereof. In order to overcome the occurrence of the conventional halo phenomenon, each ink layer covered on the first ink layer is surely covered first. Ink layer, and using the laser to cover the first ink layer and the ink layer covered thereon with ink covering the visible area, and knocking it off, a vertical ink step difference is formed, so that the light does not penetrate The halo phenomenon occurs on the entire surface after passing through the thickness of the different ink layers, and the size of the visible area can be ensured, and the light leakage caused by the first layer of ink is overcome.

In order to achieve the above object, the present invention provides an improved cover process for a touch panel, which comprises the steps of providing a transparent substrate with a visible area covering a first ink layer on the transparent substrate, and then Forming a plurality of second ink layers on the first ink layer, sequentially stacking the plurality of second ink layers on the first ink layer, and removing the first ink covering the visible area of the light-transmitting substrate by using a laser Layer and a plurality of second ink layers.

In order to achieve the above object, the present invention also provides an improved cover for a touch panel, comprising: a transparent substrate provided with a visible area, a first ink layer on the transparent substrate, and a plurality of second inks The layer is sequentially covered on the first ink layer, and a portion of the plurality of second ink layers and the first ink layer covering the visible area of the light-transmitting substrate is removed by the laser.

The purpose, technical contents, features and effects achieved by the present invention will be more readily understood by the detailed description of the embodiments and the accompanying drawings.

The improved outer cover of the touch panel of the present invention and the manufacturing process thereof, in order to improve the light leakage of the outer cover, the use frequency of the white outer cover is increased, and the demand is also increased. The present invention completely covers the first with other ink layers. The ink layer, by laser, removes excess ink from the visible area without causing light leakage, and reduces the thickness of the ink that is conventionally applied to the first ink layer by avoiding light leakage.

Referring to the second and third figures of the present invention, a modified outer cover 20 of the touch panel includes a transparent substrate 22, and the transparent substrate 22 is provided with a visible area 24, wherein the transparent substrate The 22 series is the front cover (Cover Glass, CG) of the mobile device, and the front cover can be a black cover, a white cover or other various color covers, etc., and the color of the front cover is not limited herein; The ink layer 26 is disposed on the transparent substrate 22 and the plurality of second ink layers. In this embodiment, a total of four second ink layers 28a-28d are exemplified, wherein the uppermost second ink layer 28d is black ink. The four second ink layers 28a-28d are sequentially covered on the first ink layer 26, and the four second ink layers 28a-28d and the first ink layer 26 are covered on the transparent substrate 22, and the fourth layer is second. The ink layers 28a-28d and the first ink layer 26 may be completely or partially covered on the visible area 24 of the light transmissive substrate 22 and removed by the laser 30.

After the description of the structure and positional relationship of the improved outer cover 20 of the touch panel of the present invention, please refer to the fourth figure of the present invention and sequentially display the fifth to fifth e-pictures to explain the details. The process of the improved outer cover 20 of the touch panel of the invention. First, as shown in step S10 and referring to FIG. 5A at the same time, a transparent substrate 22 is provided, which is provided with a visible area 24. As shown in step S12 and referring to FIG. 5b, a first ink layer 26 is covered on the transparent substrate 22, and the first ink layer 26 may cover the visible region 24 of the transparent substrate 22 in whole or in part. And the portion other than the visible area 24, and then proceeds to the next step. In step S14, please also refer to the fifth c-picture, and sequentially cover the plurality of second ink layers on the first ink layer 26. In the second ink layer 28a-28d of the embodiment, four layers are taken as an example to make four layers. The second ink layers 28a-28d are sequentially stacked on the first ink layer 26, and the second ink layer 28a of the first layer completely covers the first ink layer 26, and may also cover the light-transmissive substrate 22 in whole or in part. The visible area 24 and the portion other than the visible area, and then the other three layers of the second ink layer 28b-28d are sequentially stacked on the second ink layer 28a of the first layer, and then the next step is performed. In step S16 and referring to FIG. 5 d, the first ink layer 26 and the four second ink layers 28a 28d covering the visible area 24 of the transparent substrate 22 are removed by using the laser 30. Then, more than the ink stacked on the visible area 24 is vertically removed by the laser light, so that there is no ink on the visible area 24, and at the same time, the first ink layer 26 can be completely covered by the four layers of ink layers 28a-28d stacked thereon. Live, finally, as shown in Figure 5 e, this is the modified cover 20 of the touch panel with the excess ink on the visible area 24 removed.

The above-mentioned first ink layer and a total of four ink layers are stacked on a transparent substrate, which can be a logo on the outer cover or the front cover, such as a brand logo, a function key or a pattern design, and various ink layers can be used. It is made up of different colors, such as white, silver, gold or black. However, most of the colors used will use white ink to make the color effect of the formed logo, function keys or mixed patterns softer. However, the present invention utilizes a laser method to remove the ink step difference generated by the printing process of different ink layers, and forms a vertical ink step difference to overcome the halo phenomenon formed by the white ink may cause light leakage, so that it is not necessary Knowing techniques use adhesive to complement the gap created by the ink step. Although the invention uses the laser method as the cutting method, other processing methods can be used for cutting. The design advantage of the present invention is that after the ink step is eliminated, when the light penetrates, there is no shortage of printing ink due to the thickness of the different ink layers or because of the printing holes, sound holes and touch screens. When there is a backlight, a halo phenomenon is generated on the front surface of the front cover, and the present invention can provide a better visual use effect on the appearance of the user when in use.

The embodiments described above are merely illustrative of the technical spirit and the features of the present invention, and the objects of the present invention can be understood by those skilled in the art, and the scope of the present invention cannot be limited thereto. That is, the equivalent variations or modifications made by the spirit of the present invention should still be included in the scope of the present invention.

10‧‧‧ front cover
12‧‧‧protective glass
14‧‧‧visible area
16a~16e‧‧‧ ink layer
18‧‧‧Black ink layer
20‧‧‧Modified cover for touch panel
22‧‧‧Transparent substrate
24‧‧‧visible area
26‧‧‧First ink layer
28a~28d‧‧‧second ink layer
30‧‧‧Laser

The first figure is a schematic diagram of the structure of the outer cover of the conventional touch panel. The second figure is a schematic structural view of the improved outer cover of the touch panel of the present invention before using laser light. The third figure is a schematic structural view of the improved cover of the touch panel of the present invention after using laser light. The fourth figure is a schematic flow chart of the improved cover process of the touch panel of the present invention. The fifth to fifth e-graphs are respectively schematic structural diagrams of the steps of the improved outer cover for manufacturing the touch panel of the present invention.

20‧‧‧Modified cover for touch panel

22‧‧‧Transparent substrate

24‧‧‧visible area

26‧‧‧First ink layer

28a~28d‧‧‧second ink layer

Claims (10)

An improved cover process for a touch panel, comprising the steps of: providing a transparent substrate, comprising a visible area; covering a first ink layer on the transparent substrate; sequentially covering the plurality of second ink layers On the first ink layer, the second ink layers are sequentially stacked on the first ink layer; and the first ink layer covering the visible region of the transparent substrate is removed by using a laser and The second ink layers. The improved cover process of the touch panel of claim 1, wherein the transparent substrate is a front cover of a mobile device. The improved cover process of the touch panel of claim 1, wherein the second ink layer comprises four ink layers. The improved cover process of the touch panel of claim 1, wherein the second ink layer of the uppermost layer of the second ink layers is a black ink. The improved cover process of the touch panel of claim 2, wherein the combined design of the first ink layer and the second ink layers can be a logo, a function key or a pattern on the front cover. An improved outer cover structure of a touch panel, comprising: a transparent substrate provided with a visible area; a first ink layer on the transparent substrate; and a plurality of second ink layers, The first ink layer is sequentially covered on the first ink layer, and the portions of the plurality of second ink layers and the first ink layer covering the visible area of the light-transmitting substrate are removed by laser. The improved cover structure of the touch panel of claim 6, wherein the light transmissive substrate is a front cover of a mobile device. The improved cover structure of the touch panel of claim 6, wherein the second ink layer comprises four ink layers. The improved cover structure of the touch panel of claim 6, wherein the second ink layer of the uppermost layer of the second ink layers is a black ink. The improved cover structure of the touch panel of claim 7, wherein the combined design of the first ink layer and the second ink layers can be a logo, a function key or a pattern on the front cover.