CN211979630U - LED double-color display touch screen structure - Google Patents

Abstract

The utility model provides a double-colored demonstration touch screen structure of LED relates to touch-sensitive screen technical field. Aiming at providing an LED touch screen display suitable for a smaller-size household appliance. The LED lamp comprises a circuit board, wherein a substrate, a reflecting layer and a protective plate are sequentially arranged above the circuit board from bottom to top, the reflecting layer is respectively provided with a mixed color pattern hole and a monochromatic pattern hole which are communicated with the lower surface of the protective plate and the upper surface of the substrate, the upper surface of the substrate in the monochromatic pattern hole is provided with a monochromatic light pattern layer, the upper surface of the substrate in the mixed color pattern hole is provided with a fluorescent powder layer, the fluorescent powder layer is provided with a light transmitting hole penetrating through the upper surface and the lower surface, the mixed color light pattern layer is arranged above the fluorescent powder layer, and an LED lamp electrically connected with. The utility model discloses beneficial effect does: the light source with one wavelength displays two patterns with different colors, the structure is compact, the occupied space is small, and the LED touch screen display requirements of small size and multiple functions of household appliances are met. The pattern display is clear, the color is pure, and the beautiful requirement of the household appliance is met.

Description

LED double-color display touch screen structure

Technical Field

The utility model belongs to the technical field of the touch-sensitive screen technique and specifically relates to a LED touch screen display structure that wavelength light source shows two kinds of different colour patterns is related to.

Background

With the development of the technology, the requirements of LED touch screen display of household appliances are higher and higher. Different functions of the household appliance need to display different patterns and different colors. Currently, LED display touch screens provide a display light source from one primary color LED, displaying one color pattern. Two LED light sources with different wavelengths are needed for providing the dual color display. The structure has high requirements on the LED light source patch and low production efficiency. In addition, although there is a disclosure of changing one wavelength of LED light source to another wavelength, only one color can be displayed.

SUMMERY OF THE UTILITY MODEL

In order to solve among the prior art domestic appliance and show that double-colored structure area occupied is big, and manufacturing cost is high, influences use comfort's technical problem again, the utility model provides a LED touch screen that shows two kinds of colour patterns simultaneously shows structure to lower manufacturing cost adapts to the domestic appliance LED touch screen of less volume and shows the use, improves use comfort.

The technical scheme of the utility model is that: the utility model provides a double-colored touch screen structure that shows of LED, it includes the circuit board, from up being equipped with the base plate down in proper order down in the circuit board top, the reflection stratum, the protection shield, the reflection stratum is equipped with intercommunication protection shield lower surface respectively, the mixed color pattern hole of base plate upper surface, monochromatic pattern hole, the downthehole upper surface of base plate of monochromatic pattern is equipped with monochromatic light pattern layer, the downthehole base plate upper surface of mixed color pattern is equipped with phosphor layer, phosphor layer is equipped with the light trap that link up upper and lower surface, phosphor layer's top is equipped with mixed color light pattern layer, the base plate below is equipped with the LED lamp of being. The same LED display touch screen displays two patterns with different colors, so that the use comfort is improved. Compact structure, small occupied space and wide application range.

Preferably, the mixed color pattern hole is a stepped hole, the diameter of the upper hole and the diameter of the lower hole are larger than that of the middle hole, and the cross section of the mixed color pattern hole is in an I shape.

Preferably, the fluorescent powder layer is positioned at the lower end of the lower hole of the mixed color pattern hole, and a lower hole cavity is arranged above the fluorescent powder layer; is favorable for the multiple reflection and mixing of two kinds of light with different wavelengths.

Preferably, the mixed color light pattern layer is positioned at the upper end of the upper hole of the mixed color pattern hole, the lower end of the upper hole of the mixed color pattern hole is provided with the light guide layer, and an upper hole cavity is arranged between the light guide layer and the mixed color light pattern layer; the strength is strengthened, and the pattern is clearly displayed.

Preferably, the light holes are round holes, and the central axes of the light holes and the central axes of the color mixing pattern holes form acute angles; is beneficial to the reflection of monochromatic light.

Preferably, the upper surface of the light guide layer is fixedly connected with a convex light guide point; the pattern appears bright after the light is mixed.

Preferably, the upper surface of the monochromatic light pattern layer is provided with a filter layer; the display pattern is purer.

Preferably, the lower surface of the protective plate is provided with an atomizing layer; the pattern display is even, improves the comfort level.

Preferably, the mixed-color light pattern layer and the monochromatic light pattern layer are reflective ink and are respectively provided with hollow patterns; compact structure and small occupied space.

Compared with the prior art, the beneficial effects of the utility model are that: the light source with one wavelength displays two patterns with different colors, the structure is compact, the occupied space is small, the LED touch screen display requirements of small size and multiple functions of household appliances are met, and the application range is wide. The pattern display is clear, and the color is pure, accords with the pleasing to the eye requirement of household electrical appliances, improves use comfort.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a sectional view taken along line B-B of fig. 1.

In the figure: 1-a protective plate; 2-atomizing layer; 3-a reflective layer; 4-a substrate; 5-an insulating layer; 6-LED lamps; 7-a circuit board; 31-mixed color pattern holes; 32-single color pattern holes; 311-mixed color light pattern layer; 312-a light guiding layer; 313-a phosphor layer; 314-light-transmitting holes; 321-a monochromatic light pattern layer; 322-filter layer.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example 1:

1-3, an LED dual color display touch screen structure includes a circuit board 7. The circuit board 7 is a PCB board. The base plate 4, the reflecting layer 3 and the protective plate 1 are sequentially arranged above the circuit board 7 from bottom to top. The substrate 4 is a transparent sheet. The protective plate 1 is a transparent film. The lower surface of the protective plate 1 is provided with an atomizing layer 2. The atomizing layer 2 is an atomizing diffusant and is sprayed on the lower surface of the protective plate 1. The reflective layer 3 is opaque ink and is applied on the upper surface of the substrate 4. The upper surface of the reflecting layer 3 is tightly attached to the atomizing layer 2. An LED lamp 6 electrically connected with a circuit board 7 is arranged below the substrate 4. The LED lamp 6 is sheet-shaped. The lower surface of the substrate 4 and the upper surface of the circuit board 7 are provided with an insulating layer 5. The insulating layer 5 is opaque black ink. The light emitting end of the LED lamp 6 is attached to the lower surface of the substrate 4, and the rest surface of the LED lamp 6 is embedded into the insulating layer 5. The LED lamp 6 is electrically connected to the circuit board 7. The reflective layer 3 is provided with a mixed color pattern hole 31 and a monochromatic pattern hole 32, respectively.

The color mixing pattern hole 31 is a stepped hole and is formed by connecting an upper hole, a middle hole and a lower hole. The diameter of the upper hole and the diameter of the lower hole are larger than the diameter of the middle hole. The color mixing pattern hole 31 is cut along the central axis, and the cross section is in an I shape. The upper ends of the color mixing pattern holes 31 are communicated with the atomizing layer 2 on the lower surface of the protective plate 1. The lower end of the color mixing pattern hole 31 communicates with the upper surface of the substrate 4. The hole wall of the mixed color pattern hole 31 is the reflective layer 3. The phosphor layer 313 is provided on the upper surface of the substrate 4 in the color mixture pattern hole 31. The phosphor layer 313 is positioned at the lower end of the lower hole of the color mixture pattern hole 31. The monochromatic light becomes mixed-color light by the phosphor layer 313. The phosphor layer 313 is provided with a light transmission hole 314 penetrating the upper and lower surfaces. The light hole 314 is a circular hole. The light holes 314 are uniformly distributed on a plurality of concentric circles (as shown in fig. 3) with the center of the color mixing pattern hole 31 as the center. The central axis of the light-transmitting hole 314 and the central axis of the color-mixing pattern hole 31 form an acute angle (as shown in fig. 1). The monochromatic light may pass directly through the light-transmitting hole 314. The light passing through the light-transmitting hole 314 is reflected by the lower hole wall and the bottom of the middle hole of the color-mixing pattern hole 31. A lower hole cavity is formed above the phosphor layer 313. The upper surface of the phosphor layer 313 is spaced apart from the bottom of the hole in the color mixing pattern hole 31, and the gap forms a lower hole cavity. The light of the monochromatic light passing through the phosphor layer 313 and the monochromatic light directly passing through the light transmission hole 314 are reflected multiple times in the lower hole cavity to be mixed into the mixed color light required by the mixed color light pattern layer 311. A color-mixed light pattern layer 311 is disposed above the phosphor layer 313. The mixed color light pattern layer 311 is positioned at the upper end of the hole on the mixed color pattern hole 31. The mixed color light pattern layer 311 is printed with black ink that does not transmit light on the lower surface of the atomization layer 2 in the mixed color pattern hole 31. The mixed color light pattern layer 311 cannot transmit light and can reflect light. The color mixing light pattern layer 311 is provided with a hollow pattern, such as "T" in fig. 2. The light can pass through the hollow pattern of the mixed color light pattern layer 311. The lower end of the hole of the color mixing pattern hole 31 is provided with a light guide layer 312. The upper surface of the light guide layer 312 is fixedly connected with the raised light guide points. The light guide point is made of white ink through digital UV printing and infrared drying. The light guide points are arranged in a matrix shape. An upper hole cavity is arranged between the light guide layer 312 and the mixed color light pattern layer 311. A gap is left between the light guide layer 312 and the mixed color light pattern layer 311, and the gap is an upper hole cavity. The light guide point is located in the upper hole cavity. The lower end of the light guide point is fixed with the light guide layer 312. The upper end of the light guide point is not connected with the mixed color light pattern layer 311 and is suspended in the upper hole cavity.

The upper ends of the single-color pattern holes 32 are communicated with the atomizing layer 2 on the lower surface of the protective plate 1. The lower end of the single-color pattern hole 32 communicates with the upper surface of the substrate 4. The hole wall of the single-color pattern hole 32 is the reflective layer 3. Inside the monochromatic pattern hole 32, a monochromatic light pattern layer 321 is provided on the upper surface of the substrate 4. The upper surface of the monochromatic light pattern layer 321 is provided with a filter layer 322. The monochromatic light pattern layer 321 is a reflective ink, which is opaque to light and can reflect light. The monochromatic light pattern layer 321 is provided with a light-transmissive hollow pattern, such as "Δ" in fig. 2. The monochromatic light pattern layer 321 is printed on the upper surface of the substrate 4 within the monochromatic pattern holes 32 with black ink that is opaque to light. The hollow pattern of the monochromatic light pattern layer 321 may transmit light. The filter layer 322 may filter light outside the wavelength of the LED lamp 6, and only let light of the wavelength of the LED lamp 6 pass through.

As illustrated by the emission of blue wavelength light by the LED lamp 6. The LED lamp 6 is lit, and the LED lamp 6 illuminates the substrate 4. The light refracted by the substrate 4 enters the monochromatic pattern hole 32, passes through the hollow pattern of the monochromatic light pattern layer 321, and is emitted to the atomization layer 2 in the monochromatic pattern hole 32. A blue pattern was seen on the upper surface of the protective sheet 1. Since the filter layer 322 filters out light of non-blue wavelengths, the pattern displayed by the monochrome pattern hole 32 is a pure blue color. Meanwhile, light refracted by the substrate 4 enters the color mixing pattern hole 31, and the light passes through the phosphor layer 313. If the final pattern to be displayed in the color-mixing pattern hole 31 is white, the parameters of the phosphor layer 313 are adjusted so that the blue-wavelength light enters the phosphor layer 313 and then is emitted as yellow-wavelength light. The yellow wavelength light enters the cavity under the hole 31 of the color mixing pattern. Meanwhile, part of the blue wavelength light passes through the light transmission hole 314 and directly enters the hole cavity under the color mixing pattern hole 31. In the cavity under the color mixing pattern hole 31, the light with the blue wavelength and the light with the yellow wavelength are reflected and mixed for multiple times to form the light with the white wavelength. The white wavelength light passes through the holes in the color mixing pattern hole 31, passes through the hollow pattern of the color mixing light pattern layer 311 through the light guide layer 312, and is emitted to the atomization layer 2 in the color mixing pattern hole 31. A white pattern was seen on the upper surface of the protective sheet 1.

Claims (9)

1. The utility model provides a two-colored display touch screen structure of LED, it includes circuit board (7), its characterized in that: circuit board (7) top is from up being equipped with base plate (4), reflection stratum (3), protection shield (1) down in proper order, reflection stratum (3) are equipped with mixed color pattern hole (31), monochromatic pattern hole (32) of intercommunication protection shield (1) lower surface, base plate (4) upper surface respectively, the upper surface of base plate (4) is equipped with monochromatic light pattern layer (321) in monochromatic pattern hole (32), mixed color pattern hole (31) inner base plate (4) upper surface is equipped with phosphor layer (313), and phosphor layer (313) are equipped with light trap (314) of lining up the upper and lower surface, the top of phosphor layer (313) is equipped with mixed color light pattern layer (311), base plate (4) below is equipped with LED lamp (6) of being connected with circuit board (7) electricity.

2. The LED bi-color display touch screen structure of claim 1, wherein: the color mixing pattern hole (31) is a stepped hole, the diameter of the upper hole and the diameter of the lower hole are larger than that of the middle hole, and the cross section of the color mixing pattern hole (31) is in an I shape.

3. The LED bi-color display touch screen structure of claim 1 or 2, wherein: the fluorescent powder layer (313) is positioned at the lower end of the lower hole of the color mixing pattern hole (31), and a lower hole cavity is arranged above the fluorescent powder layer (313).

4. The LED bi-color display touch screen structure of claim 1 or 2, wherein: the mixed color light pattern layer (311) is positioned at the upper end of the upper hole of the mixed color pattern hole (31), the lower end of the upper hole of the mixed color pattern hole (31) is provided with a light guide layer (312), and an upper hole cavity is arranged between the light guide layer (312) and the mixed color light pattern layer (311).

5. The LED bi-color display touch screen structure of claim 1, wherein: the light holes (314) are round holes, and the central axes of the light holes (314) and the central axes of the color mixing pattern holes (31) form acute angles.

6. The LED bi-color display touch screen structure of claim 4, wherein: the upper surface of the light guide layer (312) is fixedly connected with a convex light guide point.

7. The LED bi-color display touch screen structure of claim 1, wherein: the upper surface of the monochromatic light pattern layer (321) is provided with a filter layer (322).

8. The LED bi-color display touch screen structure of claim 1, wherein: and the lower surface of the protective plate (1) is provided with an atomizing layer (2).

9. The LED bi-color display touch screen structure of claim 1, wherein: the mixed color light pattern layer (311) and the monochromatic light pattern layer (321) are made of light-reflecting ink and are respectively provided with hollow patterns.

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