TW202101032A - Manufacturing method of colorful pattern imaging light-transmitting lens for automotive projection lamp sequentially depositing materials with different colors on the surface of the glass substrate according to the different colors of the plurality of color coatings - Google Patents

Abstract

Provided is a manufacturing method of a colorful pattern imaging light-transmitting lens for an automotive projection lamp. The manufacturing method includes: forming a plurality of identical colorful pattern units on a glass substrate, wherein each of the colorful pattern units is composed of a plurality of color coatings; sequentially depositing materials with different colors on the surface of the glass substrate according to the different colors of the plurality of color coatings; and finally, cutting and separating the glass substrate by taking the colorful pattern units as units to form the individually-independent colorful pattern imaging light-transmitting lens. The light-transmitting lens may be mounted on an automotive projection lamp system so as to project colorful patterns.

Description

Method for manufacturing color pattern imaging light-transmitting sheet for automobile projection lamp

The invention relates to a light-transmitting sheet installed in an automobile projection lamp system, in particular to a manufacturing method of a color-pattern imaging light-transmitting sheet that can reduce the color fading of the color light-transmitting sheet and improve the performance of the projection pattern.

Based on the consideration of providing cars with further visual sense of decoration, sense of honor or luxury, some models of cars on the market will be equipped with projection lamps in certain parts to project patterns or text images on the ground when the projection lamps are activated The appropriate position on the upper or car body. For example, you can install the projection lamp at the door of the car, when the door is opened, the projection lamp is automatically activated to project the pattern or text image on the ground, so as to highlight the visual sensory effect at night or in a dark environment. The pattern or text can be a factory emblem, trademark, or any pattern and text of an automobile brand.

The structure of the conventional automobile projection lamp is basically that a light source and a lens are respectively arranged at opposite ends of a hollow body, and a light-transmitting sheet with characters or patterns is arranged between the light source and the lens; the pattern on the light-transmitting sheet is The characters can be colored or achromatic; after using a light source to project light through the light-transmitting sheet, the text or pattern image printed on the light-transmitting sheet is focused through a lens and projected onto the ground or the surface of the car body.

The conventional color pattern imaging light-transmitting film used in the automotive projection lamp system uses a printing method to print color ink on the glass substrate to form a color pattern, but because the ink is organic Material, after the light generated by the light source is irradiated, it is easy to cause the pattern to fade; especially, most of the current car projection lamps use power-saving and long-life light-emitting diodes (LED) as the light source, which makes the blue light in the LED light easier The organic matter in the ink is oxidized, which accelerates the fading of the pattern. In addition, due to the difficulty of precision control of the light-transmitting sheet in the printing process and the problem of ink fluidity, the clarity of printed patterns or characters is affected, which hinders the quality performance of the color patterns or characters projected by the projection lamp.

The purpose of the present invention is to provide a method for manufacturing a color pattern imaging light-transmitting sheet used in automotive projection lamps. The light-transmitting sheet manufactured by the method can reduce the fading of the color patterns or characters formed on the light-transmitting sheet and improve the projection The quality of the pattern or text.

The manufacturing method of the color pattern imaging light-transmitting sheet for automobile projection lamps provided by the present invention is used to form a light-transmitting sheet having color patterns of more than two colors. The main feature is that a plurality of identical light-transmitting sheets are formed on a glass substrate. Color pattern unit, each of the color pattern units is composed of a plurality of color coating layers, and the plurality of color coating layers sequentially deposit materials with different colors on the surface of the glass substrate according to different colors, and finally The glass substrate is cut and separated in units of the color pattern unit to form individual and independent color pattern imaging light-transmitting sheets. .

The manufacturing method provided by the present invention may include the following steps: (1) providing a glass substrate; (2) depositing a material with a first color on the surface of the glass substrate to form a first color coating layer; (3) ) Forming a photoresist layer on the first color coating layer; (4) exposing and developing a plurality of first part patterns on the photoresist layer; (5) applying an etching process to Part of the pattern of the first color coating layer is removed; (6) The number of times (2) to (5) are repeated according to the number (n+1) of the remaining patterns to be formed, wherein "N+1" replaces the "first", and the n is a natural number greater than 1; (7) removing the photoresist layer to expose the first color coating layer A part of the pattern and the n+1th part of the pattern having the n+1th color coating layer, the first part of the pattern and the n+1th part of the pattern together constitute the color pattern unit; and, (8) The glass substrate is cut and separated in units of the color pattern unit to form a plurality of independent color pattern imaging light-transmitting sheets.

In the present invention, the color pattern units are preferably arranged in a matrix on the glass substrate to facilitate cutting and separation of the color pattern units.

In the present invention, the color coating layer can be formed on the glass substrate by vacuum evaporation, vacuum magnetron sputtering or chemical vapor deposition.

According to the aforementioned method of manufacturing the light-transmitting sheet of the present invention, the color coating layer formed on the glass substrate by the metal material by means of vacuum evaporation, vacuum magnetron sputtering or chemical vapor deposition is better than the printing method. Adhesion and oxidation resistance, so it is not easy to fade after being irradiated by a light source for a long time, and it is easy to control the accuracy of forming color patterns or characters during the coating process, so that the projected patterns or characters have better quality performance.

1‧‧‧Glass substrate

1a‧‧‧Transparent film

2‧‧‧Color pattern unit

2a‧‧‧The first color coating

2a’‧‧‧Part one pattern

2b‧‧‧The second color coating

2b’‧‧‧Part II pattern

2c’‧‧‧Part Three Pattern

3‧‧‧Photoresist layer

4‧‧‧Mask

5‧‧‧Car projection lamp system

50‧‧‧Ontology

51‧‧‧Light source

52‧‧‧Lens

53‧‧‧Thermal Module

6‧‧‧Car rearview mirror housing

Fig. 1 is a schematic plan view showing the formation of a plurality of color pattern units on a glass substrate by the method of the present invention; Fig. 2 is a schematic view showing the color pattern light-transmitting sheet formed by cutting and separating the color pattern units on the glass substrate; Fig. 3 is a schematic diagram showing the formation of two different color coating layers on a glass substrate according to the present invention; Fig. 4 is a perspective exploded view showing an embodiment in which the light-transmitting sheet of the present invention is installed in a car projection lamp system; Schematic diagram of the pattern projected by the projection lamp system.

The following is a further description of other purposes and functions of the present invention in conjunction with the drawings, so that those skilled in the art will have a detailed understanding of the present invention; among them, the "pattern" mentioned below includes graphics, characters, numbers, symbols, lines, etc. A collective term used to express visual imagery.

The preferred embodiment of the manufacturing method of the color pattern imaging light-transmitting sheet for automobile projection lamps provided by the present invention includes: (1) providing a glass substrate; (2) depositing a material with the first color on the glass A first color coating layer is formed on the surface of the substrate; (3) a photoresist layer is formed on the first color coating layer; (4) a plurality of first partial patterns are exposed and developed on the photoresist layer; (5) Use an etching process to remove the first color coating layer other than the first part of the pattern; (6) Repeat the aforementioned (2) to (5) according to the number (n+1) of the remaining part of the pattern to be formed ), where the “first” is replaced by the “n+1”, and the n is a natural number greater than 1; (7) the photoresist layer is removed to reveal the The first partial pattern of the first color coating layer and the n+1th partial pattern having the n+1th color coating layer, the first partial pattern and the n+1th partial pattern jointly constitute The color pattern unit 2 (as shown in Figure 1); finally the glass substrate is cut and separated by the color pattern unit as a unit to form a plurality of independent color pattern imaging light-transmitting sheets 1a (as shown in Figure 2) .

Specifically, the present invention can use colorless glass as the glass substrate 1; The colored materials can be metals, alloys or metal compound materials, and the materials with different colors can be deposited on the glass substrate by vacuum sputtering, vacuum magnetron sputtering, or chemical vapor deposition. 1 to form color pattern units 2, that is, each color pattern unit 2 contains multiple colors; based on the economic considerations of mass production, the color pattern units 2 are preferably arranged in a matrix on the glass substrate 1, and each One color pattern unit 2 is the same as each other. The detailed description of the formation process of only one of the color pattern units 2 is captured below; it should be understood that the formation of a plurality of color pattern units 2 on the glass substrate 1 in the present invention is performed and completed simultaneously . Since a color pattern 2 unit may contain the same color at different positions, the same first color pattern is collectively referred to as the first partial pattern 2a', and the same second color pattern is collectively called It is the second part of the pattern 2b', and so on.

As shown in Figure 3 (a) to (e), the manufacturing method of the present invention first provides a cleaned glass substrate 1 (as shown in Figure 3 (a)); then use the first color material on the glass A first color coating layer 2a is deposited on the surface of the substrate 1 (as shown in (b) of FIG. 3b), and the first color coating layer 2a is the first color in the color pattern unit 2 finally formed on the light-transmitting sheet; Then, a photoresist as a photosensitive material is coated on the first color coating layer 2a to form a photoresist layer 3 (as shown in Figure 3(c)); next, a mask 4 is used to form the first part of the pattern 2a' is exposed and developed on the photoresist layer 3 (as shown in Figure 3(d)); then the first color coating layer 2a other than the first part of the pattern 2a' that is not shielded by the exposed photoresist layer 3 is used in the etching process The etching is removed (as shown in FIG. 3(e)), so that the remaining first color coating layer 2a is formed as a first partial pattern 2a'.

Figure 3 (f) to (j) show that after the first color coating layer 2a (ie the first partial pattern 2a') is completed on the glass substrate 1, the second color coating layer 2b (ie the first partial pattern 2b') is successively formed )the process of. Specifically, a material with the second color is deposited on the surface of the glass substrate 1 A second color coating layer 2b is formed (as shown in Figure 3(f)). The second color coating layer 2b is the second color in the color pattern unit 2 finally formed on the light-transmitting sheet; and then the photoresist Coated on the second color coating layer 2b to form a photoresist layer 3 (as shown in Figure 3(g)); then use the photomask 4 to expose and develop the second partial pattern 2b' to be formed on the photoresist Layer 3 (as shown in Figure 3(h)); then the second color coating layer 2b other than the second part of the pattern 2b' that is not covered by the exposed photoresist layer 3 is etched away (Figure 3(h)); i)), so that the second color coating layer 2b is formed as a second partial pattern 2b'. If the color pattern unit 2 contains only two colors, after the first color coating layer 2a and the second color coating layer 2b are completed, the process of stripping off the photoresist layer 3 is performed to form the first color coating layer on the glass substrate 1. The color pattern unit 2 of a part of the pattern 2a' and the second part of the pattern 2b' (as shown in Fig. 3(j)).

If the color pattern unit 2 contains a third color, the first color coating layer 2a (ie, the first partial pattern 2a') and the second color coating layer 2b (ie, the second partial pattern 2b') are completed on the glass substrate 1. , And then continue to form a third color coating layer (that is, the third partial pattern 2c', as shown in FIG. 2). That is, a material with a third color is deposited on the surface of the glass substrate to form a third color coating layer; then a photoresist is coated on the third color coating layer to form a photoresist layer; then a photomask is used to The third part of the pattern to be formed is exposed and developed on the photoresist layer; then an etching process is used to etch away the third color coating layer except the third part of the pattern that is not shielded by the exposed photoresist layer, so that the third color coating layer is formed as The third part of the pattern. If the color pattern unit contains more than the fourth color, the aforementioned steps are repeated to sequentially form multiple color coating layers on the glass substrate.

After the plural color pattern units are formed on the glass substrate 1, a cutting process is required to cut the glass substrate 1 into a color pattern imaging light-transmitting sheet containing each color pattern unit 2 1a.

The completed light-transmitting sheet 1a is a component provided in the car projection lamp system 5. As shown in FIGS. 4 and 5, the car projection lamp system 5 generally includes a body 50, a light source 51, and the transparent The light sheet 1a, at least a set of lenses 52 and a heat dissipation module 53; wherein the body 50 is provided at a local position installed in the car, and the body 50 has an inner space that penetrates from the first end to the second end; the light source 51 It is best to use a light emitting diode (LED), and the light source 51 is arranged at the first end of the body 50, so that the light source 51 can project light toward the second end of the body 50; the heat dissipation module 53 is arranged on the first end of the body 50 One end is used to absorb the heat generated by the light source 51 and dissipate it; the lens 52 is provided at the second end of the body 50; the light source 51 is electrically connected to the power system of the car, and when the light source 51 is energized to project light, After the light passes through the light-transmitting sheet 1 a with the color pattern unit 2, a color image corresponding to the color pattern unit 2 can be generated and focused by the lens 52 to be projected to the surface of an object.

The car projection lamp system 5 can be installed in the rearview mirror housing 6 of the car, the ceiling of the car interior, the car bumper, the car interior trim panel, etc.

The color pattern unit 2 on the light-transmitting sheet 1a can be various possible patterns such as traffic rule gestures, geometric figures, photos, cartoon patterns,..., etc. The color pattern unit is projected to produce color images in addition to In addition to warning, it can also produce visual sensory effects to enhance added value.

In addition to forming the color pattern unit 2, the light-transmitting sheet 1a can also form warning words such as "STOP", "STOP", "Caution", "Caution", etc.

The light source 51 is electrically connected to the automobile power system, and can automatically control its energized and light-emitting time through the circuit. For example, it can be set to automatically emit light when braking, parking, turning, opening the door, etc. Projected warning text or creative color pattern shadow When the aforementioned conditions are stopped, the light source is powered off and does not emit light; or the light source can be controlled by humans to continuously emit light.

The above description is only used to explain the preferred embodiments of the present invention, and is not based on any limitation to the present invention. Therefore, any changes in form should still be included in the scope of the present invention.

1a‧‧‧Transparent film

2a’‧‧‧Part one pattern

2b’‧‧‧Part II pattern

2c’‧‧‧Part Three Pattern

Claims (4)

A manufacturing method of a color pattern imaging light-transmitting sheet used in automobile projection lamps, used to form a light-transmitting sheet with color patterns of more than two colors, characterized in that: a plurality of same color pattern units are formed on a glass substrate Each of the color pattern units is composed of a plurality of color coating layers, and the plurality of color coating layers sequentially deposit materials with different colors on the surface of the glass substrate according to different colors, and finally The glass substrate is cut and separated in units of the color pattern unit to form independent color pattern imaging light-transmitting sheets individually. As described in the first item of the scope of patent application, the manufacturing method of the color pattern imaging light-transmitting sheet for automobile projection lamps includes the following steps: (1) providing a glass substrate; (2) depositing the first color material A first color coating layer is formed on the surface of the glass substrate; (3) a photoresist layer is formed on the first color coating layer; (4) a plurality of photoresist layers are exposed and developed on the photoresist layer The first part of the pattern; (5) The first color coating layer except for the first part of the pattern is removed by an etching process; (6) The above (2) is repeated according to the number (n+1) of the remaining part of the pattern to be formed ) To the number of steps (5), wherein the “first” is replaced by the “n+1”, and the n is a natural number greater than 1; (7) the photoresist layer is removed to Revealing the first partial pattern with the first color coating layer and the n+1th partial pattern with the n+1th color coating layer, the first partial pattern and the n+1th portion Patterns together constitute the color pattern unit; and (8) The glass substrate is cut and separated in units of the color pattern unit to form a plurality of independent color pattern imaging light-transmitting sheets. As described in item 1 or item 2 of the scope of patent application, the method for manufacturing a color pattern imaging light-transmitting sheet used in automobile projection lamps, wherein the color pattern units are arranged in a matrix on the glass substrate. As described in item 1 or item 2 of the scope of patent application, the method for manufacturing the color pattern imaging light-transmitting sheet used in automobile projection lamps, wherein vacuum evaporation, vacuum magnetron sputtering or chemical vapor deposition is adopted Colored metal materials are deposited on the glass substrate to form the multiple-color coating layer.

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