CN201177708Y - liquid crystal structure - Google Patents

Abstract

The utility model relates to a liquid crystal structure, in which a light conversion layer is arranged on a light source (for example: a cold cathode tube or a light emitting diode) or a light guide plate or a color filter. The light conversion layer is an organic or inorganic phosphor, and the x, y values of the color coordinates or the color saturation (for example: the color saturation under the NTSC standard) can be changed according to the required R, G, B. The backlight module of the liquid crystal structure only needs one layer of diffusion film, so as to reduce the cost and increase the viewing angle.

Description

liquid crystal structure

Technical field:

The utility model relates to a liquid crystal structure, in particular to a backlight module with a light conversion layer and a liquid crystal module or a liquid crystal structure in which a light conversion layer is arranged on the liquid crystal module.

Background technique:

Currently, the liquid crystal structure is applied to mobile phones, laptop computers, desktop screens or TVs, etc., because of its thinness, it replaces the conventional CRT, and the light source of the current backlight module includes cold cathode tubes and light-emitting diodes. (The blue light-emitting diode excites the phosphor powder structure), so that the color saturation of the liquid crystal structure is lower than that of the CRT, so improving the color saturation of the liquid crystal structure is the most important issue.

Furthermore, due to the current price of liquid crystal structure products of cold cathode tubes, the current price is getting lower and lower, and the issue of producing finished products must be reduced, which has appeared in factories or brand owners of liquid crystal structures, in order to increase sales and universal usage. .

Therefore, at present, the problem of color saturation and cost reduction of the liquid crystal structure has gradually become a major issue for various manufacturers. The utility model provides a new structure to solve the current problem.

Utility model content:

The main purpose of the present utility model is to provide a liquid crystal structure, which is to provide a backlight module, a light conversion layer is arranged on the outside of the light source of the backlight module, and the backlight module only needs a light diffusion layer to reduce the Cost and increase color saturation, contrast, viewing angle, and change the x, y values of one or all of the R, G, and B color coordinates.

The secondary purpose of the present utility model is to provide a liquid crystal structure, which is to provide a backlight module, a light conversion layer is arranged or doped on the light incident surface or the light exit surface of the light guide plate of the backlight module, and the backlight module can be Only one light diffusion layer is needed to reduce cost and increase color saturation, contrast, viewing angle and change the x, y values of one or all of the R, G, B color coordinates.

Another object of the present utility model is to provide a liquid crystal structure, which is to provide a liquid crystal module, a light conversion layer is arranged or doped above or below a color filter of the liquid crystal module, and can make the backlight The module only needs a light-diffusing layer to increase color saturation, contrast, viewing angle, and change the x, y values of one or all of R, G, and B color coordinates.

In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme: a light conversion layer is arranged on the light source (for example: cold cathode tube or light emitting diode) or light guide plate or color filter, and the light conversion layer is organic or For inorganic phosphors, the light conversion layer can be added by changing the x and y values of the color coordinates according to the needs of R, G and B.

Compared with the prior art, the utility model has the following advantages: use a light conversion layer to increase the color saturation or R, G, B required to improve the x, y value or color temperature of the color coordinates, and can make the liquid crystal structure The backlight module only needs one layer of diffusion film to reduce cost and increase viewing angle.

Description of drawings:

Fig. 1 is a schematic structural view of a preferred embodiment of the present invention.

Fig. 2 is a schematic structural diagram of another preferred embodiment of the present invention.

Figures 3a, 3b and 3c are structural schematic diagrams of another preferred embodiment of the present invention.

4a, 4b, 4c, 4d are structural schematic diagrams of another preferred embodiment of the present invention.

Figures 5a, 5b and 5c are structural schematic diagrams of another preferred embodiment of the present invention.

Description of figure number:

10 LCD structure 20 Backlight module

22 light source 222 light conversion layer

24 light guide plate 242 reflective layer

26 light diffusion film 30 liquid crystal module

40 liquid crystal structure 50 backlight module

52 light sources 522 light conversion layers

54 light diffusion film 60 liquid crystal module

70 liquid crystal structure 80 backlight module

82 light source 84 light guide plate

842 reflective layer 844 light conversion layer

86 light diffusion film 90 liquid crystal module

100 liquid crystal structure 110 backlight module

112 backlight 114 light diffusion film

116 light conversion layer 120 liquid crystal module

122 color filters 124 light conversion layers

126 light conversion layers 128 light conversion layers

130 light conversion layer

Detailed ways:

In order to solve the disadvantage of insufficient color saturation of the liquid crystal structure in the prior art, the utility model provides a better structure to solve the problem of color saturation.

First of all, please refer to Fig. 1, which is a schematic structural diagram of a preferred embodiment of the present invention; as shown in the figure, the present invention provides a liquid crystal structure 10 comprising a backlight module 20 and a liquid crystal module 30, the present invention The embodiment is a side-light liquid crystal structure. The backlight module 20 is arranged under the liquid crystal module 30. The backlight module 20 includes at least one light source 22, such as a cold cathode tube and a light-emitting diode, outside the light source 22. Layer is to set a light conversion layer 222, a light guide plate 24 is set on one side of the light source 22, and a light diffusion film 26 is set on the top of the light guide plate 24, wherein the light guide plate 24 is set with a reflective layer 242, and The reflective layer 242 can be formed integrally with the light guide plate 24 through injection molding, die-casting or printing. Moreover, only one layer of light diffusion film 26 is disposed above the light guide plate 24 of the backlight module 20 , and no prism sheet or brightness enhancement film is disposed.

Wherein the light conversion layer 222 is organic or inorganic phosphor, and the light conversion layer 222 is selected from one of red phosphor, blue phosphor and green phosphor or any combination thereof. When the light source 22 is a cold-cathode tube, the light emitted by the light source 22 through the lamp tube includes short-wavelength invisible light and visible light. The invisible light will destroy the film layer of the polymer material due to its strong photon energy, for example: Light guide plate, BEF, light diffusion film, the light conversion layer 222 will absorb the invisible light or visible light to convert the energy into one or both or all of the colors of R, G, and B after energy absorption, so it can be changed The x, y values of the R, G, and B color coordinates of the liquid crystal structure 30 can also improve the color saturation and contrast, for example: the color saturation and contrast comply with the NTSC standard. Since this embodiment does not have a prism sheet or a brightness enhancement film, the viewing angle can be increased.

Please refer to Fig. 2, which is a structural schematic diagram of another preferred embodiment of the present utility model; An example is a direct-type liquid crystal structure. The backlight module 50 is arranged below the liquid crystal module 60. The backlight module 50 includes at least one light source 52, such as a cold cathode tube and a light emitting diode. The outer layer of the light source 52 is A light conversion layer 522 is set, and a light diffusion film 54 is set above the light source 52. The light conversion layer 522 of this embodiment is organic or inorganic phosphor, and the light conversion layer 522 is selected from red phosphor, blue phosphor, One of the green phosphor powder and the green phosphor powder or any combination of the above. Moreover, only one layer of light diffusion film 54 is provided above the light source 52 of the backlight module 50 , and no prism sheet or brightness enhancement film is provided, so the viewing angle can be increased.

Please refer to Figures 3a, 3b and 3c, which are schematic structural views of another preferred embodiment of the present invention; as shown in the figure, the present invention provides a liquid crystal structure 70 comprising a backlight module 80 and a liquid crystal module 90. This embodiment is a side-light liquid crystal structure. The backlight module 80 is arranged below the liquid crystal module 90. The backlight module 80 includes at least one light source 82, such as a cold cathode tube and a light emitting diode. One side of 82 is provided with a light guide plate 84, and a light diffusion film 86 is provided above the light guide plate 84, wherein the light guide plate 84 is provided with a reflective layer 842, and the reflective layer 842 can be integrated with the light guide plate 84 Forming, through injection molding, die-casting or printing process methods, a light conversion layer is provided or doped (as shown in Figure 3c) on the light incident surface (as shown in Figure 3a) or the light output surface (as shown in Figure 3b) of the light guide plate 84 844, the light conversion layer 844 of this embodiment is organic or inorganic phosphor, and the light conversion layer 844 is selected from one of red phosphor, blue phosphor and green phosphor or any combination thereof. Moreover, only one layer of light diffusion film 86 is disposed above the light guide plate 84 of the backlight module 80 , and no prism film or brightness enhancement film is disposed, so the viewing angle can be increased.

Please refer to Figures 4a, 4b, 4c and 4d, which are structural schematic diagrams of another preferred embodiment of the present invention; as shown in the figure, the present invention provides a liquid crystal structure 100 comprising a backlight module 110 and a The liquid crystal module 120, in this embodiment, is a side-lit or direct-lit liquid crystal structure, and the color filter 122 of the liquid crystal module 120 is arranged or doped (as shown in FIG. 4c) above (as shown in FIG. 4a) or below (as shown in FIG. ) a light conversion layer 124, the light conversion layer 124 of the present embodiment is an organic or inorganic phosphor, and the light conversion layer 124 is selected from one of red phosphor, blue phosphor and green phosphor or the above-mentioned any combination. Since the backlight module 110 is only provided with a backlight 112 and a light diffusion film 114, the backlight 112 of this embodiment is an edge-lit backlight or a direct-light backlight, and the light diffusion film 114 is disposed on the backlight 112. There is no prism sheet or brightness enhancement film on the top, so the viewing angle can be increased.

For the color filter 122 shown in FIG. 4 c , the doped light conversion layer 124 can be doped according to the color coordinates of R, G, and B that need to be improved, and can be doped with only a single color or a plurality of colors. In addition, as shown in FIG. 4d, the difference between FIG. 4a and FIG. 4d is that a light conversion layer 124 mixed with red phosphor, green phosphor and blue phosphor is arranged above the color filter 122 in FIG. 4a, The light conversion layers 126, 128, and 130 are arranged above the color filter 122 in Fig. 4d because the color blocks of R, G, and B of the color filter 122 are respectively doped with red phosphor, green phosphor, and blue phosphor. One of the powders may be mixed with two or three kinds to adjust the ratio of light color, so the color saturation and contrast can be improved.

Please refer to Figures 5a, 5b and 5c, which are structural schematic diagrams of another preferred embodiment of the present invention; as shown in the figure, the present invention provides a liquid crystal structure 100 comprising a backlight module 110 and a liquid crystal module 120. This embodiment is a side-lit or direct-lit liquid crystal structure, and a light diffusion film 114 of the backlight module 110 is arranged or doped (as shown in FIG. 4c ) above (as shown in FIG. 4a ) or below (as shown in FIG. 4b ). The light conversion layer 116, the light conversion layer 116 of this embodiment is organic or inorganic phosphor, and the light conversion layer 116 is selected from one of red phosphor, blue phosphor and green phosphor or any combination of the above By. Since the backlight module 110 is only provided with a backlight 112 and a light diffusion film 114, the backlight 112 of this embodiment is an edge-lit backlight or a direct-light backlight, and the light diffusion film 114 is arranged on the backlight 112. On the top, there is no prism sheet or brightness enhancement film, so the viewing angle can be increased.

Claims (18)

1. A liquid crystal structure comprising a backlight module and a liquid crystal module, characterized in that the backlight module comprises: At least one light source, a light conversion layer is coated on the outer layer of the light source; A light guide plate is arranged on one side of the light source; and A diffusion film is arranged on the light guide plate; Wherein, the liquid crystal module is arranged above the diffusion film, and the backlight module does not need to be provided with an enhancement film, and only needs one layer of the diffusion film. 2. The liquid crystal structure according to claim 1, wherein the light conversion layer is an organic or inorganic phosphor layer. 3. The liquid crystal structure according to claim 1, wherein the light conversion layer is selected from one of red phosphor, blue phosphor and green phosphor or any combination thereof. 4. The liquid crystal structure according to claim 1, wherein a refraction layer is disposed under the light guide plate and integrally formed with the light guide plate. 5. A liquid crystal structure comprising a backlight module and a liquid crystal module, characterized in that the backlight module comprises: at least one light source; A light guide plate is arranged on one side of the light source, and the light guide plate is provided with or doped with a light conversion layer on the light incident surface or the light exit surface; and A diffusion film is arranged on the light guide plate; Wherein, the liquid crystal module is arranged above the diffusion film, and the backlight module does not need to be provided with an enhancement film, and only needs one layer of the diffusion film. 6. The liquid crystal structure according to claim 5, wherein the light source is a cold cathode tube or a light emitting diode. 7. The liquid crystal structure according to claim 5, wherein the light conversion layer is an organic or inorganic phosphor layer. 8. The liquid crystal structure according to claim 5, wherein the light conversion layer is selected from one of red phosphor, blue phosphor and green phosphor or any combination thereof. 9. The liquid crystal structure according to claim 5, wherein a refraction layer is disposed under the light guide plate and integrally formed with the light guide plate. 10. A liquid crystal structure comprising a backlight module and a liquid crystal module, characterized in that: The backlight module is comprised of: At least one light source, a light conversion layer is coated on the outer layer of the light source; A diffusion film is arranged on the light source; Wherein, the liquid crystal module is arranged above the diffusion film, and the backlight module does not need to be provided with an enhancement film, and only needs one layer of the diffusion film. 11. The liquid crystal structure according to claim 10, wherein the light conversion layer is an organic or inorganic phosphor layer. 12. The liquid crystal structure according to claim 10, wherein the light conversion layer is selected from one of red phosphor, blue phosphor and green phosphor or any combination thereof. 13. A liquid crystal structure comprising a backlight module and a liquid crystal module, characterized in that the backlight module comprises: at least one light source; A diffusion film is disposed on the light source, and a light conversion layer is disposed or doped above or below the diffusion film; Wherein, the liquid crystal module is arranged above the diffusion film, and the backlight module does not need to be provided with an enhancement film, and only needs one layer of the diffusion film. 14. The liquid crystal structure according to claim 13, wherein the light conversion layer is an organic or inorganic phosphor layer. 15. The liquid crystal structure according to claim 13, wherein the light conversion layer is selected from one of red phosphor, blue phosphor and green phosphor or any combination thereof. 16. A liquid crystal structure comprising a backlight module and a liquid crystal module, characterized in that the liquid crystal module comprises a color filter, and a light conversion layer is arranged or doped above or below the color filter , the liquid crystal module is arranged above the liquid crystal module. 17. The liquid crystal structure according to claim 16, wherein the light conversion layer is selected from one of red phosphor, blue phosphor and green phosphor or any combination thereof. 18. The liquid crystal structure according to claim 16, wherein the light conversion layer is doped with red phosphor, green phosphor and blue phosphor respectively according to the R, G and B color blocks of the color filter. One of the powders is either doped with two or doped with three.

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