Display device

Abstract

The utility model discloses a display device which is characterized in that a first substrate comprises a metal reflecting layer, the metal reflecting layer comprises a red metal reflecting part, a green metal reflecting part and a blue metal reflecting part, and the red metal reflecting part, the green metal reflecting part and the blue metal reflecting part are arranged at intervals; the black matrix comprises a plurality of first openings, a plurality of second openings and a plurality of third openings, the first openings, the second openings and the third openings are arranged at intervals, the red metal reflecting part at least partially corresponds to the first openings, and the green metal reflecting part at least partially corresponds to the second openings; the red metal reflecting part at least partially corresponds to the third opening; compared with a traditional scheme, the display device has the advantages that the metal reflecting layer is used for replacing a color filter, and the metal reflecting layer is arranged on the first substrate, so that the light entering the environment does not need to pass through the color filter twice, the loss of the light can be reduced, and the lighting effect of the display device is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display device. Background Art

[0002] refer to Figure 1 The material of the reflective layer 01 of the total reflection type liquid crystal display device is aluminum or silver. The external ambient light enters the total reflection type liquid crystal display device and generates red, green and blue light after passing through the color filter 02 of the total reflection type liquid crystal display device. The red, green and blue light is reflected by the internal reflective layer 01 of the total reflection type liquid crystal display device and then displayed. Although this type of total reflection type liquid crystal display device has the advantages of good eye protection and good display effect when used outdoors, the light needs to pass through the color filter 02 twice, which will cause light loss and reduce the light effect. Utility Model Content

[0003] Embodiments of the present application provide a display device to improve the problem of reduced light efficiency of the display device due to light loss.

[0004] In a first aspect, an embodiment of the present application provides a display device, including:

[0005] a first substrate, the first substrate comprising a first transparent substrate, a metal reflection layer and a first transparent electrode, the metal reflection layer being arranged on the first transparent substrate, the metal reflection layer comprising a red metal reflection part, a green metal reflection part and a blue metal reflection part, the red metal reflection part, the green metal reflection part and the blue metal reflection part being arranged at intervals, and the first transparent electrode being arranged on the first transparent substrate;

[0006] a second substrate, the second substrate is opposite to the first substrate, the second substrate comprises a second transparent substrate, a black matrix and a second transparent electrode, the black matrix is ​​arranged on a surface of the second transparent substrate close to the first substrate, the black matrix comprises a plurality of first openings, a plurality of second openings and a plurality of third openings, the first openings, the second openings and the third openings are arranged at intervals, the red metal reflecting portion at least partially corresponds to the first openings, the green metal reflecting portion at least partially corresponds to the second openings, the red metal reflecting portion at least partially corresponds to the third openings, and the second transparent electrode is arranged on a surface of the second transparent substrate close to the first substrate;

[0007] A liquid crystal layer is disposed between the first substrate and the second substrate.

[0008] Furthermore, a surface of the metal reflective layer close to the second substrate is provided with a plurality of first protruding portions, and the plurality of first protruding portions are arranged at intervals.

[0009] Furthermore, the display device also includes an insulating layer, which is located between the metal reflective layer and the first transparent electrode, and the insulating layer covers the red metal reflective portion, the green metal reflective portion and the blue metal reflective portion.

[0010] Furthermore, the red metal reflecting portion is configured to emit light in a wavelength band of 620nm-740nm, the green metal reflecting portion is configured to emit light in a wavelength band of 490nm-580nm, and the blue metal reflecting portion is configured to emit light in a wavelength band of 440nm-480nm.

[0011] Furthermore, the material of the red metal reflecting part includes titanium nitride, the material of the green metal reflecting part includes tungsten oxide, and the material of the blue metal reflecting part includes chromium oxide.

[0012] Furthermore, the display device also includes a light source module, which is located on one side of the display device, and the light emitting surface of the light source module faces the side wall of the second substrate. The display device also includes a first refractive layer, which is arranged on a surface of the second transparent substrate away from the first substrate.

[0013] Further, the light source module includes a red light source, a green light source and a blue light source, the light emitting surfaces of the red light source, the green light source and the blue light source are all facing the side wall of the second substrate, and the display cycle of the display device includes a first display stage, a second display stage and a third display stage;

[0014] The red light source is used to be turned on in the first display stage, the green light source is used to be turned on in the second display stage, and the blue light source is used to be turned on in the third display stage.

[0015] Furthermore, the display device further comprises a second refractive layer, and the second refractive layer is arranged on a side of the black matrix away from the liquid crystal layer;

[0016] Wherein, in a top view of the display device, a portion of the first refractive layer overlaps with the second refractive layer.

[0017] Furthermore, in a top view of the display device, the second refractive layer overlaps with the black matrix.

[0018] Furthermore, the refractive index of the second transparent substrate is greater than the refractive index of the first refractive layer, and the refractive index of the second transparent substrate is greater than the refractive index of the second refractive layer.

[0019] Beneficial effects of this application:

[0020] The present application provides a display device, wherein the first substrate includes a metal reflection layer, the metal reflection layer includes a red metal reflection part, a green metal reflection part and a blue metal reflection part, the red metal reflection part, the green metal reflection part and the blue metal reflection part are arranged at intervals, the black matrix includes a plurality of first openings, a plurality of second openings and a plurality of third openings, the first openings, the second openings and the third openings are arranged at intervals, the red metal reflection part at least partially corresponds to the first opening, the green metal reflection part at least partially corresponds to the second opening, the red metal reflection part at least partially corresponds to the third opening Three openings; the ambient light entering the display device generates red light after passing through the red metal reflecting part and is emitted toward the light emitting surface of the display device; the ambient light entering the display device generates green light after passing through the green metal reflecting part and is emitted toward the light emitting surface of the display device; the ambient light entering the display device generates blue light after passing through the blue metal reflecting part and is emitted toward the light emitting surface of the display device; compared with the traditional solution, a metal reflecting layer is used instead of the color filter, and the metal reflecting layer is arranged on the first substrate, so that the ambient light does not need to pass through the color filter twice, thereby reducing the loss of light and improving the light efficiency of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the light path of ambient light entering the display device in a traditional solution;

[0022] Figure 2 is a schematic diagram of a first display device of the present application;

[0023] Figure 3 yes Figure 2 An enlarged schematic diagram of position A of the display device shown;

[0024] Figure 4 yes Figure 2 A schematic diagram of a light path corresponding to the display device when ambient light enters;

[0025] Figure 5 is a schematic diagram of a second display device of the present application;

[0026] Figure 6 yes Figure 5 A schematic diagram of the path of light from a light source module of a display device is shown.

[0027] 100-first substrate, 110-first transparent substrate, 120-metal reflective layer, 121-red metal reflective portion, 122-green metal reflective portion, 123-blue metal reflective portion, 124-first protruding portion, 130-first transparent electrode, 140-insulating layer; 200-second substrate, 210-second transparent substrate, 220-black matrix, 221-first opening, 222-second opening, 223-third opening, 230-second transparent electrode, 240-first refractive layer, 250-second refractive layer; 300-liquid crystal layer; 400-light source module, 410-red light source, 420-green light source, 430-blue light source.

[0028] 01-Reflective layer; 02-Color filter. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The technical solutions described below are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0030] In addition, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise clearly defined.

[0031] The first embodiment of the present application provides a display device, referring to Figure 2 and Figure 4 The display device includes a first substrate 100 , a second substrate 200 and a liquid crystal layer 300 .

[0032] Specifically, the second substrate 200 is opposite to the first substrate 100; the liquid crystal layer 300 is disposed between the first substrate 100 and the second substrate 200; the first substrate 100 includes a first transparent substrate 110, a metal reflective layer 120 and a first transparent electrode 130, the metal reflective layer 120 is disposed on the first transparent substrate 110, the metal reflective layer 120 includes a red metal reflective portion 121, a green metal reflective portion 122 and a blue metal reflective portion 123, the red metal reflective portion 121, the green metal reflective portion 122 and the blue metal reflective portion 123 are arranged at intervals, and the first transparent electrode 130 is disposed on the first transparent substrate 110; the second substrate 200 includes a second transparent substrate 210 , a black matrix 220 and a second transparent electrode 230, the black matrix 220 is disposed on a surface of the second transparent substrate 210 close to the first substrate 100, the black matrix 220 includes a plurality of first openings 221, a plurality of second openings 222 and a plurality of third openings 223, the first openings 221, the second openings 222 and the third openings 223 are arranged at intervals, the red metal reflection portion 121 at least partially corresponds to the first openings 221, the green metal reflection portion 122 at least partially corresponds to the second openings 222, the red metal reflection portion 121 at least partially corresponds to the third openings 223, and the second transparent electrode 230 is disposed on a surface of the second transparent substrate 210 close to the first substrate 100;

[0033] The first substrate 100 includes a metal reflective layer 120, the metal reflective layer 120 includes a red metal reflective portion 121, a green metal reflective portion 122 and a blue metal reflective portion 123, the red metal reflective portion 121, the green metal reflective portion 122 and the blue metal reflective portion 123 are arranged at intervals, the black matrix 220 includes a plurality of first openings 221, a plurality of second openings 222 and a plurality of third openings 223, the first openings 221, the second openings 222 and the third openings 223 are arranged at intervals, the red metal reflective portion 121 at least partially corresponds to the first openings 221, the green metal reflective portion 122 at least partially corresponds to the second openings 222, and the red metal reflective portion 121 at least partially corresponds to the second openings 222. 21 at least partially corresponds to the third opening 223; so that the ambient light entering the display device will generate red light L1 after passing through the red metal reflecting part 121 and emit toward the light emitting surface of the display device, the ambient light entering the display device will generate green light L2 after passing through the green metal reflecting part 122 and emit toward the light emitting surface of the display device, and the ambient light entering the display device will generate blue light L3 after passing through the blue metal reflecting part 123 and emit toward the light emitting surface of the display device; compared with the traditional solution, the metal reflective layer 120 is used to replace the color filter, and the metal reflective layer 120 is arranged on the first substrate 100, so that the ambient light does not need to pass through the color filter twice, thereby reducing the loss of light and improving the light efficiency of the display device.

[0034] In this embodiment, the display device is a total reflection display device.

[0035] In this embodiment, the first substrate 100 is an array substrate, and the second substrate 200 is an opposing substrate.

[0036] In this embodiment, reference Figure 3 A surface of the metal reflective layer 120 close to the second substrate 200 is provided with a plurality of first protruding portions 124, and the plurality of first protruding portions 124 are arranged at intervals. By providing a surface of the metal reflective layer 120 close to the second substrate 200 with a plurality of first protruding portions 124, light irradiated onto the reflective layer can be scattered, thereby improving the light extraction efficiency of the display device.

[0037] In the present embodiment, a plurality of first protruding portions 124 are disposed on a surface of at least one of the red metal reflecting portion 121 , the green metal reflecting portion 122 , and the blue metal reflecting portion 123 close to the second substrate 200 .

[0038] Specifically, a plurality of first protruding portions 124 are disposed on a surface of the red metal reflecting portion 121 , the green metal reflecting portion 122 , and the blue metal reflecting portion 123 close to the second substrate 200 .

[0039] Specifically, a surface of the red metal reflective portion 121 close to the second substrate 200 is provided with a first protruding portion 124 , while a surface of the green metal reflective portion 122 and the blue metal reflective portion 123 close to the second substrate 200 is not provided with the first protruding portion 124 .

[0040] Specifically, a surface of the green metal reflective portion 122 close to the second substrate 200 is provided with a first protruding portion 124 , while a surface of the red metal reflective portion 121 and the blue metal reflective portion 123 close to the second substrate 200 is not provided with the first protruding portion 124 .

[0041] Specifically, a surface of the blue metal reflective portion 123 close to the second substrate 200 is provided with a first protruding portion 124 , while a surface of the red metal reflective portion 121 and the green metal reflective portion 122 close to the second substrate 200 is not provided with the first protruding portion 124 .

[0042] In this embodiment, the first protruding portion 124 includes a convex strip.

[0043] In the present embodiment, the first protruding portion 124 includes a protrusion.

[0044] In this embodiment, the cross section of the first protruding portion 124 is tapered.

[0045] In this embodiment, the display device further includes an insulating layer 140, which is located between the metal reflective layer 120 and the first transparent electrode 130, and covers the red metal reflective portion 121, the green metal reflective portion 122, and the blue metal reflective portion 123. By providing the insulating layer 140, and placing the insulating layer 140 between the metal reflective layer 120 and the first transparent electrode 130, and covering the red metal reflective portion 121, the green metal reflective portion 122, and the blue metal reflective portion 123, the first transparent electrode 130 can be isolated from the metal reflective layer 120, so as to prevent the metal reflective layer 120 from being turned on when the first transparent electrode 130 is powered on.

[0046] In this embodiment, the red metal reflecting portion is configured to emit light in a wavelength band of 620nm-740nm, the green metal reflecting portion is configured to emit light in a wavelength band of 490nm-580nm, and the blue metal reflecting portion is configured to emit light in a wavelength band of 440nm-480nm.

[0047] In this embodiment, the material of the red metal reflective portion 121 includes titanium nitride, the material of the green metal reflective portion 122 includes tungsten oxide, and the material of the blue metal reflective portion 123 includes chromium oxide.

[0048] In this embodiment, the material of the green metal reflective portion 122 includes stainless steel nitride.

[0049] In this embodiment, the material of the blue metal reflective portion 123 includes a silane compound.

[0050] In this embodiment, the liquid crystal of the liquid crystal layer 300 is dye liquid crystal.

[0051] In this embodiment, reference Figure 5 as well as Figure 6 The display device further includes a light source module 400, which is located at one side of the display device, and a light emitting surface of the light source module 400 faces the side wall of the second substrate 200. The display device further includes a first refractive layer 240, which is disposed on a surface of the second transparent substrate 210 away from the first substrate 100. By providing the refractive layer, when the light emitted by the light source module 400 passes through the first refractive layer 240, the first refractive layer 240 can transmit the light to the metal reflective layer 120, so that in a dark environment, the display device can be supplemented with light, thereby improving the display effect of the display device.

[0052] In this embodiment, the light source module 400 includes a red light source 410, a green light source 420 and a blue light source 430, and the light emitting surfaces of the red light source 410, the green light source 420 and the blue light source 430 are all facing the side wall of the second substrate 200, and the display cycle of the display device includes a first display stage, a second display stage and a third display stage;

[0053] The red light source 410 is used to be turned on in the first display stage, the green light source 420 is used to be turned on in the second display stage, and the blue light source 430 is used to be turned on in the third display stage.

[0054] In this embodiment, the display device includes a driving layer, which is disposed on a first transparent substrate. The driving layer includes a first thin film transistor, a second thin film transistor, and a third thin film transistor. The first thin film transistor is used to control the first transparent electrode 130 corresponding to the red metal reflection portion 121, the second thin film transistor is used to control the first transparent electrode 130 corresponding to the green metal reflection portion 122, and the third thin film transistor is used to control the first transparent electrode 130 corresponding to the blue metal reflection portion 123.

[0055] In this embodiment, the first thin film transistor is used to be turned on in the first display stage; the second thin film transistor is used to be turned on in the second display stage; and the third thin film transistor is used to be turned on in the third display stage.

[0056] Among them, in the first display stage, the red light source 410 is turned on, the green light source 420 and the blue light source 430 are not turned on, the first thin film transistor is turned on, the second thin film transistor and the third thin film transistor are not turned on, and the first thin film transistor controls the deflection of a part of the liquid crystal in the liquid crystal layer corresponding to the red metal reflection part, so that the display screen of the display device is displayed as red; in the second display stage, the green light source 420 is turned on, the red light source 410 and the blue light source 430 are not turned on, the second thin film transistor is turned on, the first thin film transistor and the third thin film transistor are not turned on, and the second thin film transistor controls the deflection of a part of the liquid crystal in the liquid crystal layer corresponding to the green metal reflection part, so that the display screen of the display device is displayed as green; in the third display stage, the blue light source 430 is turned on, the red light source 410 and the green light source 420 are not turned on, the third thin film transistor is turned on, the first thin film transistor and the second thin film transistor are not turned on, and the third thin film transistor controls the deflection of a part of the liquid crystal in the liquid crystal layer corresponding to the blue metal reflection part, so that the display screen of the display device is displayed as blue.

[0057] By setting the red light source 410 to be turned on in the first display stage, the first thin film transistor to be turned on in the first display stage, the green light source 420 to be turned on in the second display stage, the second thin film transistor to be turned on in the second display stage, the blue light source 430 to be turned on in the third display stage, and the third thin film transistor to be turned on in the third display stage, the red light source 410, the green light source 420, and the blue light source 430 are turned on in different display stages, and the first thin film transistor, the second thin film transistor and the third thin film transistor are controlled to be turned on in different display stages, thereby realizing full-color display of the display device.

[0058] In this embodiment, reference Figure 5 The display device further includes a second refractive layer 250, and the second refractive layer 250 is disposed on a side of the black matrix 220 away from the liquid crystal layer 300; wherein, in a top view of the display device, a portion of the first refractive layer 240 overlaps with the second refractive layer 250. By configuring the display device to further include the second refractive layer 250, and configuring a portion of the first refractive layer 240 to overlap with the second refractive layer 250, the second refractive layer 250 can also conduct the light generated by the light source module 400, ensuring that more light can act on the metal reflective layer 120, thereby improving the light extraction efficiency of the display device.

[0059] In this embodiment, reference Figure 5 In the top view of the display device, the second refractive layer 250 overlaps with the black matrix 220. By arranging the second refractive layer 250 to overlap with the black matrix 220, the second refractive layer 250 is located on the black matrix 220, which reduces the absorption of light by the black matrix 220, thereby improving the light extraction efficiency of the display device.

[0060] In this embodiment, reference Figure 5 In the top view of the display device, the second refractive layer 250 does not overlap with the metal reflective layer 120. By arranging that the second refractive layer 250 does not overlap with the metal reflective layer 120, it is possible to avoid the second refractive layer 250 blocking the metal reflective layer 120, thereby improving the light extraction efficiency of the display device.

[0061] In this embodiment, the refractive index of the second transparent substrate 210 is greater than the refractive index of the first refractive layer 240. By setting the refractive index of the second transparent substrate 210 to be greater than the refractive index of the first refractive layer 240, when the light generated by the light source module passes through the second transparent substrate 210 and the first refractive layer 240 in sequence, the light is transmitted from the optically dense medium to the optically sparse medium, thereby ensuring that the light generated by the light source module can achieve total reflection.

[0062] In this embodiment, the refractive index of the second transparent substrate 210 is greater than the refractive index of the second refractive layer 250 .

[0063] In this embodiment, the refractive index of the first refractive layer is lower than 1.6. Preferably, the refractive index of the first refractive layer is 1.5, 1.4, 1.3, 1.2 or 1.15.

[0064] In this embodiment, the refractive index of the second refractive layer is lower than 1.6. Preferably, the refractive index of the first refractive layer is 1.5, 1.4, 1.3, 1.2 or 1.15.

[0065] In this embodiment, the refractive index of the second transparent substrate is 1.6 to 1.7. Preferably, the refractive index of the second transparent substrate is 1.6, 1.62, 1.63, 1.65, 1.68 or 1.7.

[0066] In this embodiment, the material of the first refractive layer includes SiOx or SiNx.

[0067] In this embodiment, the material of the second refractive layer includes SiOx or SiNx.

[0068] The above is a detailed description of the specific implementation of the present application. The above implementation disclosed in the present application is only the preferred implementation of the present application. For ordinary technicians in this field, many modifications and improvements can be made without departing from the concept of the present application. These modifications and improvements all fall within the scope of protection defined by the claims of the present application.

Claims

1. A display device, characterized in that: include: a first substrate, the first substrate comprising a first transparent substrate, a metal reflection layer and a first transparent electrode, the metal reflection layer being arranged on the first transparent substrate, the metal reflection layer comprising a red metal reflection part, a green metal reflection part and a blue metal reflection part, the red metal reflection part, the green metal reflection part and the blue metal reflection part being arranged at intervals, and the first transparent electrode being arranged on the first transparent substrate; a second substrate, the second substrate is opposite to the first substrate, the second substrate comprises a second transparent substrate, a black matrix and a second transparent electrode, the black matrix is ​​arranged on a surface of the second transparent substrate close to the first substrate, the black matrix comprises a plurality of first openings, a plurality of second openings and a plurality of third openings, the first openings, the second openings and the third openings are arranged at intervals, the red metal reflecting portion at least partially corresponds to the first openings, the green metal reflecting portion at least partially corresponds to the second openings, the red metal reflecting portion at least partially corresponds to the third openings, and the second transparent electrode is arranged on a surface of the second transparent substrate close to the first substrate; A liquid crystal layer is disposed between the first substrate and the second substrate.

2. The display device according to claim 1, characterized in that A surface of the metal reflective layer close to the second substrate is provided with a plurality of first protruding portions, and the plurality of first protruding portions are arranged at intervals.

3. The display device according to claim 1, characterized in that The display device further includes an insulating layer, wherein the insulating layer is located between the metal reflective layer and the first transparent electrode, and the insulating layer covers the red metal reflective portion, the green metal reflective portion, and the blue metal reflective portion.

4. The display device according to claim 1, characterized in that The red metal reflecting portion is configured to emit light in a wavelength band of 620nm-740nm, the green metal reflecting portion is configured to emit light in a wavelength band of 490nm-580nm, and the blue metal reflecting portion is configured to emit light in a wavelength band of 440nm-480nm.

5. The display device according to claim 1, characterized in that The display device further includes a light source module, which is located on one side of the display device and has a light emitting surface facing the side wall of the second substrate. The display device further includes a first refractive layer, which is located on a surface of the second transparent substrate away from the first substrate.

6. The display device according to claim 5, characterized in that: The light source module includes a red light source, a green light source and a blue light source, the light emitting surfaces of the red light source, the green light source and the blue light source are all facing the side wall of the second substrate, and the display cycle of the display device includes a first display stage, a second display stage and a third display stage; The red light source is used to be turned on in the first display stage, the green light source is used to be turned on in the second display stage, and the blue light source is used to be turned on in the third display stage.

7. The display device according to claim 5, characterized in that: The display device further comprises a second refractive layer, wherein the second refractive layer is disposed on a side of the black matrix away from the liquid crystal layer; Wherein, in a top view of the display device, a portion of the first refractive layer overlaps with the second refractive layer.

8. The display device according to claim 7, characterized in that: In a top view of the display device, the second refractive layer overlaps with the black matrix.

9. The display device according to claim 7, characterized in that: The refractive index of the second transparent substrate is greater than that of the first refractive layer, and the refractive index of the second transparent substrate is greater than that of the second refractive layer.

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