KR20170017745A - Method for manufacturing a dimming apparatus - Google Patents

Abstract

The purpose of the present invention is to form an illumination display unit for switching a plurality of displays in a thin shape in a printing process. A low refractive index layer (12), a light scattering layer (14), a light shielding layer (15), and a color filter layer (17) are formed on a light incident side surface (11a) of a light guide layer (11) in the printing process. When a first light transmission unit (2) is turned on, light is scattered in the light scattering layer (14) with respect to a first display pattern (13) and becomes scattered light (L2), and the first display pattern (13) is illuminated and displayed in white. Light of a second light transmission unit (17) is transmitted through the color filter layer (17) and transmitted through a second display pattern (16), and the second display pattern (16) is illuminated and displayed in color.

Description

METHOD FOR MANUFACTURING A DIMMING APPARATUS BACKGROUND OF THE INVENTION [0001]

The present invention relates to a dimming display device capable of selecting and illuminating a plurality of display patterns including at least one chromatic color display, and more particularly, to a dimming display device manufacturing method that can be manufactured using a printing process will be.

Patent Literature 1 and Patent Literature 2 disclose a dimming display device capable of selecting and illuminating a plurality of display patterns.

In the light modulation display device described in Patent Document 1, the first light guide is coated with ink to form a first low refractive index layer in a region excluding the first opening, and a printing process is performed in the surface of the first low refractive index layer and in the first opening To form a scattering layer. Then, the mask layer is formed on the surface of the scattering layer except for the second opening. Then, the second light guide is opposed to the mask layer.

In the light modulation display device described in Patent Document 1, when a light source opposed to the side surface of the first light guide is turned on, the light propagates inside the first light guide and is reflected at the interface with the first low refractive index layer, Since the light is scattered in the scattering layer located in the first opening of the low refractive index layer, the display of characters and symbols according to the shape of the first opening can be dimmed toward the front of the first light guide.

When the light source opposed to the side surface of the second light guide is turned on, the light propagates through the second light guide, is reflected by the reflection scattering layer, and the transmitted light is given to the second opening. By the transmitted light, the display of characters and symbols according to the shape of the second opening is seen from the front of the first light guide in a dimmed state.

In the dimming display device described in Patent Document 2, a light scattering layer is interposed between the first light guide layer and the second light guide layer, the first light guide layer and the light scattering layer are bonded to each other via the first display light guide layer, Layer and the light scattering layer are bonded to each other via the second display light-guiding layer.

In this dimming display device, light from the first light source travels inside the first light guide layer, the light enters the first display light guide layer and is scattered in the light scattering layer, and toward the front of the first light guide layer, 1 Display of letters and symbols according to the shape of the light guide layer is dimmed. When the second light source is turned on, the light propagates inside the second light guide layer, passes through the inside of the second display light guide layer, is transmitted through the light scattering layer, and is sent forward of the first light guide layer. Thus, dimming of characters or symbols according to the shape of the second display light guide layer can be seen from the front of the first light guide layer.

Japanese Utility Model Registration No. 3180967 Japanese Patent No. 4979835

In the light modulation display device described in Patent Document 1, the scattering layer is composed of a white ink containing calcium carbonate powder. Therefore, the display advances through the first light guide to be scattered in the scattering layer in the scattering layer and is dimmed in white, and the display by the light transmitted through the second light guide and transmitted through the second aperture is also white .

However, since light emitted from the light source, incident from the side end face of the first light guide, propagated through the first light guide, and scattered in the scattering layer becomes slightly blueish light, The luminance difference easily occurs in the light passing through the scattering layer. The dimming display quality is deteriorated due to the difference in brightness between the display light according to the shape of the first opening and the display light according to the shape of the second opening.

Fig. 7 of the dimming display device disclosed in Patent Document 2 also shows a structure using a color filter layer. In the dimming display device described in Patent Document 2, each layer is formed of a resin film or the like, and is manufactured by an attaching process. Therefore, the manufacturing process is troublesome, and since the film is formed as a laminate, there is also a limit to the thickness reduction.

The object of the present invention is to provide a method for manufacturing a light modulation display device capable of dimming at least one display pattern in a chromatic color, .

A first aspect of the present invention is a method of manufacturing a dimming display device capable of selecting and dimming a plurality of displays, the method comprising the steps of: (1) forming, on a light incident side surface of a light guide layer, (2) simultaneously forming a light-scattering layer in a printing process on the surface of the low refractive index layer and the first display pattern; and (3) ) Forming a light shielding layer on a surface of the light scattering layer excluding a second display pattern; (4) forming a color filter layer on the surface of the light shielding layer and the second display pattern simultaneously with a printing process And a second light-transmitting section for providing light for transmitting the color filter layer are disposed between the first light-transmitting section and the second light-transmitting section.

In the method for manufacturing a light modulation display of the present invention, for example, in the step (2), the light scattering layer is formed of white ink.

A second aspect of the present invention is a method of manufacturing a dimming display device capable of selecting and dimming a plurality of displays, the method comprising the steps of: (1) forming, on a surface of the light- (2) simultaneously forming a light-scattering layer in a printing process on the surface of the low refractive index layer and the first display pattern; and (3) ) Forming a first color filter layer in a printing process in an area other than the first colored display pattern on a light incidence side of the light scattering layer; (4) (5) forming a second color filter layer on the surface of the first color filter layer excluding the second colored display pattern by a printing process; and (6) A second light attenuating layer is formed A first light-transmitting section for forming a laminate and applying light to the light-guiding layer of the laminate; and a second light-emitting section for forming the first color filter layer and the second color filter layer, A second color filter layer, a first color filter layer, and a second color filter layer, the first color filter layer, the first color filter layer, the first light attenuating layer, and the second light attenuating layer, And a second colored light transmitting portion for imparting light of the same sequence color to the second color filter layer.

The manufacturing method of the dimming display device of the present invention has a region where the first color filter layer and the second light attenuating layer overlap and a region where the second color filter layer and the first light attenuating layer overlap.

In the method of manufacturing a light modulation display device having the above configuration, the transmittance of light transmitted through the first color filter layer and the second light attenuating layer and the transmittance of light transmitted through the second color filter layer and the first light attenuating layer are substantially equal to each other .

In the first aspect of the present invention, since the color filter layer is provided on the surface of the light-shielding layer and the inside of the second display pattern, when the display light is given from the first light- The color of the dimming indication can be changed. Therefore, even if the light path lengths of the light from the first light-transmitting portion and the light from the second light-emitting portion are different and there is a difference in brightness, a discomfort does not occur compared with the conventional example in which the same color is displayed. In addition, since almost all layers can be formed by a printing process, the step of attaching can be reduced, so that the manufacturing process is facilitated and the thickness is also easily made.

Since the first color filter layer and the second color filter layer are provided and the first colored display pattern and the second colored display pattern are provided in the second invention of the present invention, at least three types of dimming display are possible. Further, by providing the light attenuating layer, it is possible to reduce the difference in brightness between the dim display by the first colored display pattern and the dim display by the second colored display pattern, and the display quality can be improved. In addition, since almost all layers can be formed by a printing process, the step of attaching can be reduced, so that the manufacturing process is facilitated and the thickness is also easily made.

1 is a cross-sectional view showing a dimming display device according to a first embodiment of the present invention
2 (A), 2 (B) and 2 (C) are process explanatory diagrams showing a manufacturing method of the dimming display device according to the first embodiment
Fig. 3 (A) shows the first display pattern of the dimming display device of the first embodiment, and Fig. 3 (B) shows the second display pattern.
4 is a sectional view showing a dimming display device according to a second embodiment of the present invention
[Fig. 5] (A), (B) and (C) are process explanatory diagrams showing a method of manufacturing a dimming display device according to the second embodiment
6A is an operation explanatory diagram of a first color light modulation display when blue light is transmitted, and FIG. 6B is an operation explanatory diagram of a second color light modulation display when red light is transmitted
7A shows a first display pattern of the dimming display device according to the second embodiment, FIG. 7B shows a first colored display pattern, and FIG. 7C shows a second colored display pattern.

Fig. 1 shows a dimming display device 1 according to a first embodiment of the present invention.

The dimming display device 1 has a laminated body 10 in which the first light emitting portion 2 is opposed to the side of the laminated body 10 and the second light emitting portion 3 Are opposed to each other.

2 (A), 2 (B) and 2 (C) show the steps of manufacturing the laminate 10 as a manufacturing method of the dimming display device 1 in order.

The laminate 10 has a light guide layer 11. The light guide layer 11 is made of a light-transmitting, flexible synthetic resin sheet or a synthetic resin plate, and is, for example, a polyurethane sheet, a polycarbonate sheet, or a PET (polyethylene terephthalate) sheet. The light guide layer 11 has a surface 11a on the light incidence side and a surface 11b on the light-emission side as viewed in the upward direction.

2 (A), the low refractive index layer 12 is formed on the surface 11a of the light guide layer 11 on the light incidence side. The low refractive index layer 12 is formed of light transmitting ink having a refractive index lower than that of the light guide layer 11. The translucent ink is mainly made of, for example, a polyester resin, and it is preferable that the refractive index of the light guide layer 11 and the low refractive index layer 12 is 0.2 or more.

The low refractive index layer 12 is formed by a screen printing process using light transmitting ink. The low refractive index layer 12 is formed in the region except for the first display pattern 13 by curing the ink in the screen printing process. A character, a symbol or a figure is expressed by the exclusion shape of the first display pattern 13. In this embodiment, as shown in Fig. 3A, the first display pattern 13 has the number " 8 " . That is, the low refractive index layer 12 is formed in an area excluding the character " 8 ".

In the step shown in FIG. 2A, the light scattering layer 14 is formed on the surface 12a of the low refractive index layer 12. The light scattering layer 14 is formed of white ink. The white ink includes, for example, acrylic resin mixed with a white filler such as calcium carbonate or magnesium oxide, or a white pigment. In the screen printing process, white ink is applied to the surface 12a of the low refractive index layer 12 and also filled in the first display pattern 13, and the light scattering layer 14 is formed by curing the ink do.

2B, the light-shielding layer 15 is formed on the surface 14a of the light-scattering layer 14 on the light incidence side. The light shielding layer 15 is, for example, a metallic ink in which a metal filler is mixed with an acrylic resin, or a black ink in which carbon powder is mixed with an acrylic resin. This ink is applied by a screen printing process, but this ink is formed in an area except for the second display pattern 16. The light-shielding layer 15 is formed by curing the ink.

The second display pattern 16 expresses a character, a symbol or a graphic, and as shown in Fig. 3 (B), the second display pattern 16 expresses the roman " A ". That is, the light shielding layer 15 is formed in a region except for " A ".

In the laminated body 10 shown in Figs. 1 and 2, the center of the character of the first display pattern 13 and the center of the character of the second display pattern 16 are offset, but the centers of the respective characters coincide with each other .

2C, the color filter layer 17 is formed on the light-incident side surface 15a of the light-shielding layer 15. In this case, The color filter layer 17 is formed of, for example, a colored ink in which a pigment of a predetermined color is mixed with an acrylic resin. For example, the pigment is blue or red. In the screen printing, the colored ink is applied (coated) to the surface 15a of the light shielding layer 15, and at the same time, the colored ink is filled in the second display pattern 16 at the same time. The color filter layer 17 is formed by curing the colored ink.

The light-transmitting side low-refractive index layer 18 is formed on the light-emitting side surface 11b of the light-guiding layer 11 before or after each step, and the light-attenuating layer 19 is formed on the surface of the light- . The light-transmitting side low refractive index layer 18 is formed by a printing process using the same material as the low refractive index layer 12. The light damping layer 19 is a smoke layer, for example, a white or translucent filler mixed with an acrylic resin, and is formed by a printing process.

The first light emitting portion 2 shown in Fig. 1 is opposed to the side end face 11c of the light guide layer 11 of the laminate 10, and has a light emitting diode. The light emitting diode generates white light.

The second light-emitting section 3 faces the surface 17a of the color filter layer 17 on the light incidence side. The second light-emitting section 3 is composed of a light-emitting diode for generating white light. A light emitting diode for generating white light, and a light guide layer for guiding the light to the color filter layer 17.

The laminated body 10 is such that the surface 11b for light transmission of the light guide layer 11 is directed to the outside of the apparatus body on which the dimming display apparatus 1 is mounted and the surface 11a on the light incident side And is directed toward the inside. A touch sensor of, for example, a capacitive type is disposed on the outside of the device with respect to the layered product 10, or the touch sensor is disposed on the inside of the device with respect to the layered product 10. Alternatively, a switch mechanism or the like which operates by pressing the stacked body 10 inside the apparatus main body may be arranged.

3 (A), the dimming display apparatus 1 is configured such that the light emitting diode of the first light emitting section 2 is turned on and the second light emitting section 3 is turned off, 13). In this dimming display, characters of white "8" are displayed.

As shown in Fig. 1, light generated from the first light-emitting section 2 enters the inside of the light guide layer 11 from the side end face 11c. Most of the light component L1 incident into the light guide layer 11 is incident on the boundary surface between the surface 11a of the light incidence side and the low refractive index layer 12 and the surface 11b on the light- The light is reflected at the interface of the light guide layer 18 and propagates inside the light guide layer 11. A part of the light component L1 propagating inside the light guide layer 11 is scattered and becomes scattered light L2 at the boundary between the light guide layer 11 and the light scattering layer 14, And is sent forward through the surface 11b.

Since the scattered light L2 is reflected forward only in the portion of the first display pattern 13, the pattern of numeral "8" shown in FIG. 2A is dimmed. The display color at this time is due to the color of the light scattering layer 14, and becomes white in the embodiment.

When the first light emitting portion 2 is turned on and the second light emitting portion 3 is turned off, the transmitted light component for displaying the second display pattern 16 does not exist, Quot; A " represented by the letter " A " is hardly seen from the front.

Next, when the first light-emitting section 2 is turned off and the second light-emitting section 3 is turned on, the second display pattern 16 shown in FIG. 3 (B) is dimmed. This dimming indication is romanum "A", and its display color depends on the color of the color filter layer 17, for example, red or blue.

As shown in Fig. 1, the white light generated from the second light-emitting section 3 is transmitted only through the area of the second display pattern 16 to which the color filter layer 17 is not provided and the light- And the transmitted light La is transmitted through the light diffusion layer 14 and the low refractive index layer 12 and further transmitted through the light guide layer 11 and forward. The transmitted light La becomes scattered light in the light scattering layer 14 with the color of the color filter layer 17, and is emitted forward. As a result, roman "A" is displayed dimly from the front with a color such as blue.

Since the transmitted light La of the pattern of "A" transmitted through the light scattering layer 14 is scattered light and the region where the low refractive index layer 12 is formed and the region of the first display pattern 13 are transmitted under the same condition Quot; 8 " which is the first display shown in Fig. 2A is hardly seen from the front.

The dimming display device 1 has an optical path length for dimming the first display pattern 13 with the light from the first light emitting portion 2 and a light path length for light from the second light emitting portion 3, Since the first display pattern 13 is displayed in white and the second display pattern 16 is displayed in a chromatic color having a hue such as red or blue although the light path length for dimming the pattern 16 is different, Even when there is a difference in luminance due to the difference in the optical path length, there is no case where the appearance of uncomfortable feeling is greatly felt when the two dimming displays are switched.

It is also possible to generate chromatic light of a different color from that of the color filter layer 17 from the first light emitting section 2 so that the light control display by the first display pattern 13 is performed in a color different from the light control display by the second display pattern May be displayed.

The laminate 10 as a main part of the dimming display device 1 shown in Figs. 1 and 2 has a structure in which a low refractive index layer 12, a light scattering layer 14 (light scattering layer) are formed on the light incident side surface 11a of the light guide layer 11, ), The light shielding layer 15, and the color filter layer 17 are both formed by a process of coating ink such as screen printing, the manufacturing process is easy and thinning is easy.

2 (A), when the light scattering layer 14 is formed on the surface 12a of the low refractive index layer 12 by a printing process, the light scattering layer 14 is simultaneously formed on the first display pattern 13, The dimming display pattern shown in Fig. 2 (A) can be formed. 2C, when the color filter layer 17 is formed on the surface 15a of the light shielding layer 15 by a printing process, the color filter layer 17 is simultaneously formed on the second display pattern 16 The dimming display pattern shown in FIG. 2 (B) can be formed.

Since the first display pattern 13 can be formed as a layer integral with the light scattering layer 14 and the second display pattern 16 can be formed as an integral layer with the color filter layer 17, The number can be minimized. Further, since the number of layers through which light passes can be minimized, the use efficiency of light is good, and a bright dim display can be easily formed.

In particular, by embedding a part of the color filter layer 17 by printing in the second display pattern 16 with the area in which the light shielding layer 15 is missing as the second display pattern 16, 16 and the color filter layer 17, the display pattern of the chromatic color such as red or blue can be dimly displayed clearly.

4 shows a dimming display device 101 according to a second embodiment of the present invention. The dimming display device 101 has a structure in which the first light emitting section 2 is opposed to the side of the laminate 20 and the first colored light emitting section 4 and the second colored light emitting section 4 are provided on the incident side And the second colored light emitting portion 5 are opposed to each other. The first light emitting portion 2 is composed of a light emitting diode or the like which generates white light. The first colored light transmitting portion 4 generates red light and the second colored light transmitting portion 5 generates red light. The first colored light transmitting portion 4 and the second colored light transmitting portion 5 generate colored light of different colors, Generates blue light. The first colored light emitting portion 4 and the second colored light emitting portion 5 are composed of light emitting diodes that generate light of respective colors. Or a light emitting diode for generating white light and color filters of respective colors.

Fig. 5 shows a manufacturing process of the laminate 20. The step shown in Fig. 5A is the same as the manufacturing step of the laminate 10 of the first embodiment shown in Fig. 2A. In the step of forming the light guide layer 11, the step of forming the low refractive index layer 12 1 display pattern 13 and the light scattering layer 14 is formed in the printing process in the surface 12a of the low refractive index layer 12 and the first display pattern 13. [ As shown in Fig. 7 (A), the first display pattern 13 is formed in the shape of the numeral " 8 ".

5B, the light-shielding layer 21 is formed on the surface 14a of the light-scattering layer 14 on the light incidence side. The light shielding layer 21 is formed, for example, by applying a metallic ink containing a metal filler to an acrylic resin or a black ink containing a carbon powder mixed with an acrylic resin by a screen printing process and curing the ink. The light shielding layer 21 is formed in an area except for the colored display area 21a.

5B, the first color filter layer 22 is formed on both the surface of the light shielding layer 21 and the colored display region 21a. The first color filter layer 22 is formed, for example, by screen printing using a colored ink in which an acrylic resin is mixed with a pigment, and curing the ink. The first color filter layer 22 is of the same sequence color as the chromatic color light emitted from the first colored light emitting portion 4 and is red in the embodiment. By the printing process, the first color filter layer 22 is formed in the region except for the first colored display pattern 23. [ In the example shown in Fig. 7B, the first colored display pattern 23 indicates the roman alphabet "A".

The first colored display pattern 23 is formed within the range of the colored display region 21a. The first colored display pattern 23 is filled with the first light attenuating layer 24. The first light-attenuating layer 24 reduces the transmittance of light passing through the first light-attenuating layer 24 to about 80%. For example, the first light-attenuating layer 24 is coated by a screen printing process using a smoke ink containing an acrylic resin and a white filler, .

5C, the second color filter layer 25 is laminated on the surface of the first color filter layer 22 and the first light attenuating layer 24 on the light incident side. The second color filter layer 25 is formed, for example, by coating a colored ink containing a pigment in an acrylic resin by a screen printing process and curing the ink. The second color filter layer 25 is formed in a region except for the second colored display pattern 26. The second color filter layer 25 is of the same color as the chromatic color generated from the second light-transmitting portion 5, and is blue in the embodiment.

The second colored display pattern 26 is formed such that a part of the second colored display pattern 26 overlaps with the first colored display pattern 23 within the range of the colored display area 21a. The second colored display pattern 26 is formed in a pattern capable of expressing the symbol shown in Fig. 7 (C). Then, the second colored display layer 26 is filled with the smoked ink by the screen printing, and the second light attenuating layer 27 is formed by curing the ink. The second light attenuating layer 27 has a light transmittance of about 80%.

Emitting side low refractive index layer 18 and the light damping layer 19 are formed on the light-emitting side surface 11b of the light guide layer 11 to complete the laminated body 20 in any one step.

The laminate 20 shown in Fig. 4 has a region where the first color filter layer 22 and the second color filter layer 25 overlap each other and a region where the first color filter layer 22 and the second color filter layer 25 overlap each other within the range of the colored display region 21a. The region where the second light attenuating region 27 overlaps and the region where the first light attenuating layer 24 and the second color filter layer 25 overlap.

4, in the dimming display apparatus 101, the first light emitting section 2 and the first colored light emitting section 4 and the second colored light emitting section 5 are opposed to the stacked body 20 .

Next, a display operation of the dimming display device 101 according to the second embodiment will be described. When the first colored light emitting portion 4 and the second colored light emitting portion 5 are turned off and the first light emitting portion 2 is turned on, the first light emitting portion 2 is turned on in the first embodiment shown in Fig. 7 (A), by the scattered light L2 of the portion of the first display pattern 13, the number " 8 ", based on the shape of the first display pattern 13, Quot; is dimmed in white.

6A shows a state in which the first light emitting section 2 is turned off and the second colored light emitting section 5 is irradiated with blue light of the same system as that of the second color filter layer 25. [ 6A shows the transmitted light that is transmitted through the second color filter layer 25 and the first light attenuating layer 24 in the display area where the first colored display pattern 23 is formed is represented by Lb1, And the transmitted light that is transmitted through the second light-attenuating layer 27 and the first light-attenuating layer 24 is represented by Lb2. The first colored display pattern 23 shown in FIG. 7B is dimmed and displayed in blue by the transmitted light Lb1 and the transmitted light Lb2.

The transmitted light Lx transmitted through the region of the first colored display pattern 23 becomes a mixed color of blue and red.

6B shows a state in which the first light emitting section 2 is turned off and the light of the same color as that of the first color filter layer 22 is irradiated from the first colored light emitting section 4. FIG. 6B shows the light transmitted through the second light-attenuating layer 27 and the first color filter layer 22 in the display area where the second colored display pattern 26 is formed is represented by Lr1, And transmitted light that has passed through the second light attenuating layer 27 and the first light attenuating layer 24 is represented by Lr2. The second colored display pattern 26 shown in FIG. 7C is dimmed in red by the transmitted light Lr1 and the transmitted light Lr2.

At this time, the transmitted light Ly transmitted outside the region of the second colored display pattern 26 becomes a mixed color of blue and red.

In the dimming display operation of the first colored display pattern 23 shown in Fig. 6A, the transmitted light Lb1 that transmits the second color filter layer 25 and the first light attenuating layer 24, The transmittance of the light is substantially coincident with the transmitted light Lb2 transmitted through the light damping layers 27, In the dimming display operation of the second colored display pattern 26 shown in Fig. 6 (B), the transmitted light Lr1 transmitted through the second light attenuating layer 27 and the first color filter layer 22, The transmittance of the light is substantially coincident with that of the transmitted light Lr2 transmitted through the light damping layers 27 and 24. [ In addition, the transmittance of the transmitted light (Lb1, Lb2) of the blue light and the transmitted light (Lr1, Lr2) of the red light are substantially coincident.

In the embodiment shown in Fig. 6, the light transmittance of each of the first color filter layer 22 and the second color filter layer 25 is 80%, and the light transmittance of the light attenuating layers 24 and 27 is 80%. In order to make the light transmittances of the transmitted light Lb1 and the transmitted light Lb2 coincide with each other and to make the light transmittances of the transmitted light Lr1 and the transmitted light Lr2 coincide, the light of the first color filter layer 22 and the light of the second color filter layer 25 It is preferable that the transmittance and the light transmittance of the light attenuating layers 24 and 27 are matched with each other.

As shown in Fig. 6A, the transmittance of blue light rays Lb1 and Lb2 for dimming the first colored display pattern 23 is 64%, and as shown in Fig. 6B, The transmittances of the transmitted light Lr1 and Lr2 of the red light for dimming the colored display pattern 26 are all 64%. Therefore, when the first colored display pattern 23 shown in FIG. 7 (B) is dimmed and the second colored display pattern 26 shown in FIG. 7 (C) It is possible to reduce the luminance difference and improve the display quality.

In the method for producing the laminate 20 shown in Fig. 5, since each layer on the incident side of the light guide layer 11 can be formed by a printing process, the manufacturing process is easy and thin. The first colored display pattern 23 can be dimmed and displayed by filling the first color filter layer 22 with the first light attenuating layer 24 and the second light attenuating layer 27, the second colored display pattern 26 can be dimmed and displayed, and the light transmittance can be made uniform by the combination of the layers formed in the printing process.

Further, in the method of manufacturing a light modulation display device of the present invention, a third or fourth color filter layer and a third or fourth light attenuating layer can be further formed on the light incidence side of the second color filter layer 25 .

1, 101: dimming display device
2: first transmitting unit
3: second light-
4: first colored light transmitting section
5: Second colored light-
10:
11:
11a: surface of the light incidence side
12: low refractive index layer
13: 1st display pattern
14: Light scattering layer
15: Shading layer
16: Second display pattern
17: Color filter layer
20:
21: Shading layer
22: first color filter layer
23: first colored display pattern
24: first light-attenuating layer
25: second color filter layer
26: Second colored display pattern
27: second light damping layer

Claims (5)

A method of manufacturing a dimming display device capable of selecting and dimming a plurality of displays,
(1) a step of forming a low refractive index layer having a refractive index lower than that of the light guide layer in a region except for the first display pattern on the light incident side of the light guide layer by a printing process;
(2) simultaneously forming a light-scattering layer in the printing process on the surface of the low refractive index layer and the first display pattern;
(3) forming a light-shielding layer on a surface of the light-scattering layer except a second display pattern,
(4) A process for simultaneously forming a color filter layer in a printing process on the surface of the light-shielding layer and the inside of the second display pattern,
A first light-transmitting portion for applying light to the light guide layer of the laminate, and a second light-transmitting portion for applying light to transmit the color filter layer. The method according to claim 1,
In the step (2), the light scattering layer is formed of white ink. A method of manufacturing a dimming display device capable of selecting and dimming a plurality of displays,
(1) a step of forming a low refractive index layer having a refractive index lower than that of the light guide layer in a region except for the first display pattern on the light incident side of the light guide layer by a printing process;
(2) simultaneously forming a light-scattering layer in the printing process on the surface of the low refractive index layer and the first display pattern;
(3) a step of forming a first color filter layer in a printing process in a region except for the first colored display pattern on the light incidence side of the light scattering layer,
(4) a step of forming a first light attenuating layer inside the first colored display pattern,
(5) forming a second color filter layer on a surface of the first color filter layer excluding a second colored display pattern by a printing process;
(6) A step of forming a second light-attenuating layer inside the second colored display pattern,
A first light transmitting section for applying light to the light guide layer of the laminate,
A first colored light transmitting portion for imparting light of the same sequence color to the first color filter layer and the second color filter layer, the first light attenuating layer and the second light attenuating layer,
And a second colored light transmitting portion for imparting light of the same sequence color to the second color filter layer is disposed on the first color filter layer and the second color filter layer and the first light attenuating layer and the second light attenuating layer. Of the light-emitting device. The method of claim 3,
And a region where the first color filter layer and the second light attenuating layer overlap each other and a region where the second color filter layer and the first light attenuating layer overlap each other. 5. The method of claim 4,
Wherein the transmittance of the light transmitted through the first color filter layer and the second light attenuating layer is substantially equal to the transmittance of the light transmitted through the second color filter layer and the first light attenuating layer.

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