CN115356874A - Reflective liquid crystal display screen - Google Patents

Abstract

The application proposes a reflective liquid crystal display, includes: the absorption type polaroid, liquid crystal layer, diffuse layer, reflection-type polarisation layer and the reflection colour mixture layer that set up are range upon range of in proper order along the incident light direction, and the reflection colour mixture layer is made based on CMYK colour mixture principle, and the transmission axis of absorption type polaroid and the transmission axis on reflection-type polarisation layer are parallel, and the liquid crystal layer includes first state and second state, wherein: when the liquid crystal layer is in a first state, the polarization direction of incident polarized light is changed after the incident polarized light passes through the liquid crystal layer, so that the changed polarized light is reflected by the reflection type polarizing layer; when the liquid crystal layer is in the second state, the polarization direction of the incident polarized light is unchanged after passing through the liquid crystal layer, so that the polarized light after passing through the liquid crystal layer is reflected by the reflective color mixing layer after passing through the reflective polarizing layer. The reflective display screen in the application adopts a CMYK color mixing principle, has a better display effect and has higher brightness.

Description

Reflective liquid crystal display screen

Technical Field

The application relates to the field of photoelectric technology, in particular to a reflection type liquid crystal display screen.

Background

Many existing displays mainly adopt active light emitting display as a principle, and are realized by adding a rear light source in the display, and the display can well meet the requirements in most application fields, but has disadvantages in some special application fields, for example, under an outdoor strong light environment, the brightness of the display needs to be higher than that of an external environment; if the display is watched for a long time, the glasses are easy to be tired, and the eyesight can be seriously damaged. Therefore, passive non-luminous reflective display technology is in use.

The existing reflective TFT (thin film transistor liquid crystal) display technology is mostly realized based on the R (Red ) G (Green, green) B (Blue ) color mixing principle, the reflective TFT display mainly reflects external light, only increases the reflection brightness by a wave plate, and when the RGB additive method color mixing principle is applied to the reflective TFT display technology, the reflective TFT-LCD has the problem of poor color shading effect.

Disclosure of Invention

The application provides a reflection type liquid crystal display screen, which mainly aims to solve the problem that the reflection type TFT-LCD has poor color dark effect and effectively improve the display effect of the reflection type TFT-LCD.

In a first aspect, an embodiment of the present application provides a reflective liquid crystal display panel, including: the liquid crystal display panel comprises an absorption type polarizer, a liquid crystal layer, a diffusion layer, a reflection type polarizing layer and a reflection color mixing layer which are sequentially stacked along the incident light direction, wherein the reflection color mixing layer is manufactured based on a CMYK color mixing principle, the transmission axis of the absorption type polarizer is parallel to the transmission axis of the reflection type polarizing layer, the incident light passes through the absorption type polarizer to obtain incident polarized light, and the liquid crystal layer comprises a first state and a second state, wherein:

when the liquid crystal layer is in the first state, the polarization direction of the incident polarized light is changed after passing through the liquid crystal layer, so that the changed polarized light is reflected by the reflection type polarization layer;

when the liquid crystal layer is in the second state, the polarization direction of the incident polarized light after passing through the liquid crystal layer is unchanged, so that the polarized light after passing through the liquid crystal layer is reflected by the reflective color mixing layer after passing through the reflective polarization layer, and the reflected polarized light is transmitted out according to the opposite direction of the incident light.

Preferably, when the liquid crystal layer is in the first state, the liquid crystal layer is a nematic liquid crystal layer in 90-degree twisted arrangement.

Preferably, when the liquid crystal layer is in the second state, the liquid crystal layer is a vertically aligned nematic liquid crystal layer.

Preferably, the reflective color mixing layer includes a plurality of color mixing units, adjacent color mixing units are connected by a black array, the color mixing unit includes a cyan array, a magenta array and a yellow array, adjacent arrays are connected by the black array, the cyan array includes a plurality of cyan color blocks, adjacent cyan color blocks are connected by black color blocks, the magenta array includes a plurality of magenta color blocks, adjacent magenta color blocks are connected by the black color blocks, the yellow array includes a plurality of yellow color blocks, and adjacent yellow color blocks are connected by the black color blocks.

Preferably, the reflective color mixture layer comprises a plurality of cyan color blocks, a plurality of magenta color blocks and a plurality of yellow color blocks, adjacent color blocks are connected through black color blocks, colors of the adjacent color blocks are different, and for each color block, two other color blocks with different colors adjacent to the color block exist, and a 'pin' shape is presented on the position relation.

Preferably, the diffusion layer appears white in a light-reflecting state.

Preferably, an upper glass substrate is further arranged between the absorption type polarizer and the liquid crystal layer, and a lower glass substrate is further arranged behind the reflection color mixing layer.

Preferably, the upper glass substrate is provided with a transparent electrode, the transparent electrode is arranged on one surface, far away from the liquid crystal layer, of the upper glass substrate, the lower glass substrate is provided with a control electrode, and the control electrode is arranged on one surface, close to the reflection color mixing layer, of the lower glass substrate.

Preferably, the transparent electrode and the control electrode are used to connect two ends of a power supply, if the power supply is in an off state, the liquid crystal layer is in the first state, and if the power supply is in an on state, the liquid crystal layer is in the second state.

Preferably, the material of the transparent electrode includes indium oxide.

According to the reflective liquid crystal display screen, when the liquid crystal layer is in the first state, the polarization direction of incident polarized light after penetrating through the liquid crystal layer is changed, and the polarization direction of the changed polarized light is different from that of the reflective polarization layer, so that the changed polarized light is directly reflected by the reflective polarization layer and cannot irradiate the reflective color mixing layer, and the situation is that the reflective liquid crystal display screen is in a non-working state, and the ground color of the reflective liquid crystal display screen is displayed; when the liquid crystal layer is in the second state, the polarization direction of the incident polarized light after penetrating the liquid crystal layer is not changed and is the same as the polarization direction of the reflective polarizing layer, so that the incident polarized light irradiates the reflective polarizing layer after penetrating the liquid crystal layer, can irradiate the reflective color mixing layer after penetrating the reflective polarizing layer, and is reflected by the reflective color mixing layer, and the condition is the working state of the reflective liquid crystal display. Since the reflective color-mixed layer is made based on the CMYK color-mixed principle, a color or a black is displayed, and the color or the black has a higher contrast than the ground color of the reflective liquid crystal display panel, and thus the CMYK color-mixed principle has a better display effect and higher brightness than the RGB color-mixed principle.

Drawings

Fig. 1 is a schematic structural diagram of a reflective liquid crystal display panel according to an embodiment of the present application;

FIG. 2 is a diagram illustrating the effect of an absorptive polarizer on light in an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of the effect of a reflective polarizer layer on light in an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of the reflective LCD panel when the liquid crystal layer is in the first state according to the embodiment of the present disclosure;

FIG. 5 is a schematic diagram illustrating the operation of a reflective LCD panel to light when the liquid crystal layer is in a second state according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a reflective color mixing layer provided in an embodiment of the present application;

FIG. 7 is a second schematic structural diagram of a reflective color mixing layer provided in the embodiment of the present application;

fig. 8 is a schematic structural diagram of a reflective liquid crystal display panel according to an embodiment of the present application.

Description of the drawings:

100, an absorptive polarizer; 110, a liquid crystal layer;

120, a diffusion layer; 130, a reflective polarizing layer;

140, a reflective color mixing layer; 1401, a color mixing unit;

1402, black matrix; 1403, cyan array;

1404, a magenta array; 1405, yellow array;

1406, black color blocks; 1407, cyan color block;

1408, magenta color block; 1409, yellow color block;

150, an upper glass substrate; 160, a lower glass substrate;

170, a transparent electrode; 180, a control electrode;

190, a power source.

The implementation, functional features and advantages of the objectives of the present application will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "circumferential," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1 is a schematic structural diagram of a reflective liquid crystal display panel according to an embodiment of the present disclosure, as shown in fig. 1, the reflective liquid crystal display panel includes an absorption polarizer 100, a liquid crystal layer 110, a diffusion layer 120, a reflective polarizing layer 130, and a reflective color mixing layer 140, which are sequentially stacked along an incident light direction, the reflective color mixing layer 140 is manufactured based on a CMYK color mixing principle, a transmission axis of the absorption polarizer 100 is parallel to a transmission axis of the reflective polarizing layer 130, the incident light passes through the absorption polarizer 100 to obtain an incident polarized light, and the liquid crystal layer 110 includes a first state and a second state, where: when the liquid crystal layer 110 is in the first state, the polarization direction of the incident polarized light after passing through the liquid crystal layer 110 is changed, so that the changed polarized light is reflected by the reflective polarizing layer 130; when the liquid crystal layer 110 is in the second state, the polarization direction of the incident polarized light passing through the liquid crystal layer 110 is unchanged, so that the polarized light passing through the liquid crystal layer 110 is reflected by the reflective color mixing layer 140 after passing through the reflective polarizing layer 130, and the reflected polarized light is transmitted in the opposite direction of the incident light.

In the prior art, a reflective liquid crystal display screen is usually realized by adopting an RGB additive color mixing principle, generally, a common active TFT is a black matrix when it does not work, a pixel which does not work when it works does not transmit backlight so that it is displayed as black, a working pixel transmits backlight color or white according to corresponding RGB to mix colors, the brighter the R, G and B three colors are, the brighter the RGB three colors are added together to obtain the brightest white, and the brighter additive color mode easily obtains good contrast on the black matrix. However, when the reflective TFT does not work, the reflective TFT is generally white-based, the working pixel displays color or white color by color mixing through backlight according to corresponding RGB, the brighter the three colors R, G and B are, the brighter the three colors are, the brightest white color is obtained by adding all the three colors RGB, but the color of the working pixel is very close to the base color of the reflective TFT, so when the RGB additive color mixing principle is applied to the reflective TFT display technology, the reflective TFT-LCD has the problem of poor color shading effect.

In view of this problem, the embodiment of the present application proposes a reflective liquid crystal display panel including an absorptive polarizer 100, a liquid crystal layer 110, a diffusion layer 120, a reflective polarizing layer 130, and a reflective color mixing layer 140, which are sequentially stacked along the incident light direction. Specifically, the absorption polarizer 100 in the embodiment of the present application is one of polarizers, and natural light is incident on the polarizer and is decomposed into two equally polarized light components in a parallel polarizer transmission axis direction (referred to as an x component for short) and a perpendicular polarizer transmission axis (referred to as a y component for short), a part of light in the x component in the parallel polarizer transmission axis direction is transmitted through the polarizer, and a part of light in the y component in the perpendicular polarizer transmission axis direction is absorbed, reflected, and scattered through different types of polarizers. In the embodiment of the present application, is defined as an absorptive polarizer 100. Fig. 2 is a schematic diagram illustrating the action of the absorption polarizer on light according to the embodiment of the present application, the absorption polarizer mainly includes absorption polarizing materials, as shown in fig. 2, in which a straight line represents an x component and a circle represents a y component, and for the absorption polarizer 100, the absorption polarizer 100 transmits the part of light of the x component and absorbs the part of light of the y component, so that the absorption polarizer 100 is generally dark gray in appearance, which is the case with the commonly used LCD (liquid crystal display) polarizer. The absorption type polarizer 100 may be a common polarizer having a small size and light weight; or a polarization converter consisting of a plurality of polarization beam splitting prisms, wherein the polarization converter has the advantage of high polarization precision; the light polarization device may also be other devices that can implement polarization of light, which may be determined according to actual situations, and the embodiment of the present application is not limited in this respect.

After natural light passes through the absorptive polarizer 100, light having the same polarization direction as the transmission axis of the absorptive polarizer 100 passes through the absorptive polarizer, while light having the polarization direction perpendicular to the transmission axis of the absorptive polarizer 100 is absorbed to obtain incident polarized light, and the incident polarized light irradiates the liquid crystal layer 110. In the embodiment of the present application, the liquid crystal layer 110 includes two states, a first state and a second state, and the arrangement directions of the liquid crystal molecules in the liquid crystal layer 110 are different in the different states, so that the reactions of the incident polarized light irradiating the liquid crystal layer 110 are also different. In this embodiment of the present application, the liquid crystal layer 110 may implement the transition between the first state and the second state according to the electric field, the magnetic field, the light intensity, or the magnitude of the electric signal, which may be determined specifically according to the actual situation, and this is not specifically limited in this embodiment of the present application. Fig. 3 is a schematic diagram of the effect of the reflective polarizing layer on light in the embodiment of the present application, the reflective polarizing layer mainly includes a reflective polarizing material, and as shown in fig. 3, for the reflective polarizing layer 130, the reflective polarizing layer 130 transmits the part of the light of the x component and reflects the part of the light of the y component, so that the reflective polarizing layer 130 is generally bright silver in appearance. The reflective polarizing layer 130 may be a common polarizer, which is small and lightweight; or a polarization converter consisting of a plurality of polarization beam splitting prisms, and the polarization converter has the advantage of high polarization precision; the light polarization device may also be other devices that can realize polarization of light, which may be determined according to practical situations, and the embodiment of the present application is not specifically limited herein.

In this embodiment of the application, when the liquid crystal layer 110 is in the first state, the liquid crystal molecules in the liquid crystal layer 110 are arranged according to a preset angle, and the arrangement mode of the liquid crystal molecules can change the polarization direction of the incident polarized light after passing through the liquid crystal layer 110, for example, the polarization direction is twisted by a preset angle. Since the transmission axes of the absorption polarizer 100 and the reflection type polarizing layer 130 are parallel to each other, and a predetermined angle is provided between the polarization direction of the twisted polarized light and the transmission axis of the reflection type polarizing layer 130, and the predetermined angle is ensured to be large enough to ensure that the twisted polarized light is reflected by the reflection type polarizing layer 130, the incident polarized light in the first state is directly reflected after passing through the reflection type polarizing layer 130 and cannot irradiate onto the reflection color mixing layer 140, which is the state when the reflection type liquid crystal display screen does not work, and the ground color-white color of the reflection type liquid crystal display screen is displayed. For example, the preset angle may be between 70 degrees and 90 degrees, and specifically may be 70 degrees, 75 degrees, 80 degrees, 85 degrees, 90 degrees, and the like. When the liquid crystal layer 110 is in the second state, the polarization direction of the incident polarized light passing through the liquid crystal layer 110 is unchanged, and since the transmission axis of the absorption polarizer 100 is parallel to the transmission axis of the reflection-type polarizing layer 130, in this embodiment of the present application, the angle between the polarization direction of the incident polarized light passing through the liquid crystal layer 110 and the transmission axis of the reflection-type polarizing layer is small enough, the polarization direction of the incident polarized light passing through the liquid crystal layer 110 is considered to be unchanged, for example, the polarization direction of the incident polarized light passing through the liquid crystal layer 110 is twisted between 0 degree and 20 degrees, which may be 0 degree, 5 degrees, 10 degrees, 15 degrees, 20 degrees, and the like. In this case, it is determined that the polarization direction of the incident polarized light is unchanged, and therefore, the incident polarized light in the second state can be irradiated onto the reflective color mixing layer 140 after passing through the reflective polarizer layer 130, and then reflected by the reflective color mixing layer 140, which is the state when the reflective liquid crystal display panel operates, and the color mixing, i.e., color or black, of the reflective liquid crystal display panel is displayed.

The diffusion layer 120 in the embodiment of the present application is a semi-transparent diffusion layer 120, and the transmittance of the diffusion layer 120 is greater than 45%, so that the polarized light can transmit through the diffusion layer 120 without causing large light loss. The diffusion layer 120 is made of a white diffusion material, and the display screen can display white when not in operation through the diffusion layer 120.

Finally, the reflective color mixture layer 140 in the embodiment of the present application is manufactured based on the CMYK color mixture principle, and the pixels of the reflective color mixture layer 140 display colors and black according to the corresponding CMY, the darker C, M, Y, the brighter this mode of color enhancement tends to give good contrast on white background. Therefore, compared with the RGB color mixing principle, the CMYK color mixing principle has better display effect and higher brightness.

The embodiment of the present application provides a reflective liquid crystal display, when the liquid crystal layer 110 is in the first state, the polarization direction of the incident polarized light after passing through the liquid crystal layer 110 is changed, and the polarization direction of the changed polarized light is different from the polarization direction of the reflective polarizing layer 130, so that the changed polarized light is directly reflected by the reflective polarizing layer 130 and cannot irradiate onto the reflective color mixing layer 140, which is the state when the reflective liquid crystal display does not work, and the bottom color of the reflective liquid crystal display is displayed; when the liquid crystal layer 110 is in the second state, the polarization direction of the incident polarized light after passing through the liquid crystal layer 110 is not changed, and is the same as the polarization direction of the reflective polarizing layer 130, so that the incident polarized light passes through the liquid crystal layer 110 and then irradiates the reflective polarizing layer 130, passes through the reflective polarizing layer 130 and then irradiates the reflective color mixing layer 140, and is reflected by the reflective color mixing layer 140. Since the reflective color mixture layer 140 is made based on the CMYK color mixing principle, a color or black is displayed, and the color or black has a higher contrast ratio than the ground color of the reflective liquid crystal display panel, the CMYK color mixing principle has a better display effect and has higher luminance than the RGB color mixing principle.

On the basis of the above embodiment, preferably, when the liquid crystal layer 110 is in the first state, the liquid crystal layer 110 is a nematic liquid crystal layer 110 in which 90 degrees are twisted.

Fig. 4 is a schematic diagram illustrating the action of the reflective liquid crystal display panel on light when the liquid crystal layer is in the first state in the embodiment of the present invention, as shown in fig. 4, the external natural light passes through the upper absorption polarizer 100, transmits the part of the light parallel to the transmission axis component, absorbs the part of the light perpendicular to the transmission axis component, and the part of the light parallel to the transmission axis component forms directional incident polarized light, at this time, the liquid crystal layer 110 is a Nematic liquid crystal layer 110 twisted by 90 degrees, that is, the liquid crystal layer 110 is in a TN (Nematic liquid crystal) mode, and thus, the arrangement can ensure that the polarization direction of the incident polarized light is changed after passing through the liquid crystal layer 110. After the incident polarized light passes through the liquid crystal layer 110 twisted by 90 degrees, the polarization direction is twisted by 90 degrees to obtain the polarized light twisted by 90 degrees, and since the transmission axis directions of the absorption polarizer 100 and the reflective layer polarizing layer are the same, the polarization direction of the polarized light twisted by 90 degrees is perpendicular to the transmission axis of the reflective polarizing layer 130, as can be seen from fig. 3, the polarized light twisted by 90 degrees forms reflection on the surface of the reflective polarizing layer 130, the polarized light after reflection passes through the liquid crystal layer 110 twisted by 90 degrees, the polarization direction of the polarized light is rotated by 90 degrees again, and the polarization direction is consistent with the transmission axis direction of the absorption polarizer 100, and the polarized light passes through the absorption polarizer 100. In the embodiment of the application, the liquid crystal layer 110 is set to be in the TN mode, so that the white background is more easily highlighted, and gray scale display is realized, so that the display screen has a better display effect.

On the basis of the above embodiment, it is preferable that the diffusion layer 120 appears white in a light reflecting state.

The diffusion layer 120 is set to be white, the white in the embodiment of the present application may be pure white, milky white, ivory white, snow white, etc., by which a normally white background of the display screen may be implemented, and the display content area is black or other colors, which is easily contrasted with milky white and is easily identified. Thus, the display screen is displayed as white when not in operation.

On the basis of the above embodiment, preferably, when the liquid crystal layer 110 is in the second state, the liquid crystal layer 110 is a vertically aligned nematic liquid crystal layer 110.

Fig. 5 is a schematic diagram illustrating the effect of the reflective liquid crystal display panel on light when the liquid crystal layer is in the second state according to the embodiment of the present application, as shown in fig. 5, the external natural light passes through the absorption polarizer 100, transmits the part of the light with the parallel transmission axis component, absorbs the part of the light with the perpendicular transmission axis component, and forms directional incident polarized light with the part of the parallel transmission axis component, and the liquid crystal layer 110 is vertically aligned, and the polarization direction of the incident polarized light after passing through the liquid crystal layer 110 does not change, and since the transmission axes of the absorption polarizer 100 and the reflective polarizing layer 130 are parallel, the polarization direction of the polarized light passing through the reflective polarizing layer 130 is parallel to the reflection transmission axis of the reflective polarizing layer 130, the polarized light can reach the reflective color mixing layer 140 through the reflective polarizing layer 130, and the polarization direction of the polarized light reflected by the reflective color mixing layer 140 remains the same as the transmission axis direction of the reflective polarizing layer 130, and can reach the diffusion layer 120 and the liquid crystal layer 110 through the reflective polarizing layer 130 without changing the polarization direction, and the transmission axis direction of the absorption polarizer 100 is the same as the transmission axis direction of the absorption polarizer 100, and the polarized light passes through the absorption polarizer 100; at this time, the color of the reflective color mixture layer 140 can be observed, and the liquid crystal display displays the color of the reflective color mixture layer 140. Through arranging liquid crystal layer 110 perpendicularly in this application embodiment, can guarantee to the at utmost that incident polarized light passes through liquid crystal layer 110 back polarization direction and does not change to guarantee that polarized light can see through reflection-type polarized layer 130, shine on reflection colour mixture layer 140, realize the operating condition of display screen.

On the basis of the above embodiment, preferably, the reflective color mixing layer 140 includes several color mixing units 1401, adjacent color mixing units 1401 are connected by a black array 1402, the color mixing unit 1401 includes a cyan array 1403, a magenta array 1404 and a yellow array 1405, adjacent arrays are connected by the black array 1402, the cyan array 1403 includes several cyan color blocks 1407, adjacent cyan color blocks 1407 are connected by a black color block 1406, the magenta array 1404 includes several magenta color blocks 1408, adjacent magenta color blocks 1408 are connected by the black color block 1406, the yellow array 1405 includes several yellow color blocks 1409, and adjacent yellow color blocks 1409 are connected by the black color block 1406.

Fig. 6 is a schematic structural diagram of a reflective color mixture layer provided in this embodiment, as shown in fig. 6, as an implementation manner of the reflective color mixture layer, the reflective color mixture layer 140 is composed of a plurality of color mixture units 1401, adjacent color mixture units 1401 are connected by a black matrix 1402, structures of all color mixture units 1401 are the same, the black matrix 1402 is an array composed of only black color blocks 1406, the array is generally an array in which the number of horizontal color blocks is 1, and the black color blocks 1406 are sequentially arranged end to end in the vertical direction to form the black matrix 1402. In addition, the color mixing unit 1401 is composed of three arrays including a cyan array 1403, a magenta array 1404 and a yellow array 1405 which are arranged in a certain order, and two adjacent arrays are connected through a black array 1402, and the colors of the adjacent arrays are different, taking fig. 6 as an example, it can be seen that the cyan array 1403 and the magenta array 1404 are connected through the black array 1402, and the magenta array 1404 and the cyan array 1403 are connected through the black array 1402 in fig. 6; each array is composed of corresponding color blocks, and adjacent color blocks are connected by black color blocks 1406. In the embodiment of the present application, the color mixing units 1401 are arranged in parallel, so that reflective light emission can be preferably realized.

On the basis of the above embodiment, preferably, the reflective color mixture layer 140 includes several cyan color blocks 1407, several magenta color blocks 1408 and several yellow color blocks 1409, adjacent color blocks are connected by black color blocks 1406, and the colors of the adjacent color blocks are different, and for each color block, there are two other color blocks with different colors adjacent to it, and a "pin" shape appears in the positional relationship.

Fig. 7 is a second structural schematic diagram of the reflective color mixture layer provided in the embodiment of the present application, and as shown in fig. 7, as another implementation manner of the reflective color mixture layer, the reflective color mixture layer 140 is composed of a plurality of cyan color blocks 1407, a plurality of magenta color blocks 1408, and a plurality of yellow color blocks 1409, the number of the cyan color blocks 1407, the magenta color blocks 1408, and the yellow color blocks 1409 may be determined according to an actual situation, which is not specifically limited in the embodiment of the present application. For each color block in the reflective color mixture layer 140, there are two color blocks with different colors adjacent to each other, and the two color blocks together form a "pin" shape, where adjacent may mean adjacent left and right, or adjacent top and bottom. In the embodiment of the application, color mixing is easier to realize through the arrangement of the color blocks in a shape like a Chinese character pin.

On the basis of the above embodiments, it is preferable that an upper glass substrate 150 is further disposed between the absorption polarizer 100 and the liquid crystal layer 110, and a lower glass substrate 160 is further disposed behind the reflective color mixing layer 140. Fig. 8 is a schematic structural view of a reflective liquid crystal display panel according to an embodiment of the present disclosure, and as shown in fig. 8, an upper glass substrate 150 is additionally disposed between the absorptive polarizer 100 and the liquid crystal layer 110, and a lower glass substrate 160 is further disposed after the reflective color mixture layer 140. The upper glass substrate 150 and the lower glass substrate 160 are often used in a liquid crystal display panel, and liquid crystal material is sandwiched between the two glass substrates, the upper glass substrate 150 and the lower glass substrate 160 are typically alkali-free borosilicate glass having excellent mechanical properties, heat resistance, and chemical resistance, and for TFT-LCD, the lower glass substrate 160 is distributed with TFTs, and the upper glass substrate 150 is deposited with color filters.

On the basis of the above embodiment, it is preferable that the upper glass substrate 150 is provided with a transparent electrode 170, the transparent electrode 170 is disposed on a surface of the upper glass substrate 150 away from the liquid crystal layer 110, the lower glass substrate 160 is provided with a control electrode 180, and the control electrode 180 is disposed on a surface of the lower glass substrate 160 close to the reflective color mixture layer 140. As shown in fig. 8, a transparent electrode 170 is disposed on the upper glass substrate 150, the transparent electrode 170 is disposed on a surface of the upper glass substrate 150 away from the liquid crystal layer 110, a material of the transparent electrode 170 includes indium oxide, the indium oxide has a high transmittance, and the film layer is relatively firm. A control electrode 180 is disposed on the lower glass substrate 160, the control electrode 180 being disposed on a side of the lower glass substrate 160 adjacent to the reflective color mixture layer 140, the control electrode 180 typically being a thin film transistor array, also known as a TFT.

In addition to the above embodiments, it is preferable that the transparent electrode 170 and the control electrode 180 are used to connect two ends of a power supply 190, if the power supply 190 is in an off state, the liquid crystal layer 110 is in the first state, and if the power supply 190 is in an on state, the liquid crystal layer 110 is in the second state. Specifically, the transparent electrode 170 and the control electrode 180 are respectively connected to two ends of a power supply 190, the power supply 190 may be an external power supply 190, or the power supply 190 may be embedded in the display screen, when the power supply 190 is connected and conducted, an electrical signal is loaded on the transparent electrode 170 and the control electrode 180, and an arrangement angle of liquid crystal molecules in the liquid crystal layer 110 may be changed through an electric field, so that the change from the first state to the second state of the liquid crystal layer 110 is realized. In the embodiment of the present application, the change between the first state and the second state of the liquid crystal layer 110 is realized through the power supply 190, the implementation manner is simple, the process flow is simple, and the manufacturing difficulty is reduced.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.

Claims (10)

1. A reflective liquid crystal display, comprising: the liquid crystal display panel comprises an absorption polarizer, a liquid crystal layer, a diffusion layer, a reflection type polarizing layer and a reflection color mixing layer which are sequentially stacked along the incident light direction, wherein the reflection color mixing layer is manufactured based on a CMYK color mixing principle, the transmission axis of the absorption polarizer is parallel to the transmission axis of the reflection type polarizing layer, the incident light passes through the absorption polarizer to obtain incident polarized light, and the liquid crystal layer comprises a first state and a second state, wherein:

when the liquid crystal layer is in the first state, the polarization direction of the incident polarized light is changed after the incident polarized light passes through the liquid crystal layer, so that the changed polarized light is reflected by the reflection type polarizing layer;

when the liquid crystal layer is in the second state, the polarization direction of the incident polarized light after passing through the liquid crystal layer is unchanged, so that the polarized light after passing through the liquid crystal layer is reflected by the reflective color mixing layer after penetrating through the reflective polarizing layer, and the reflected polarized light is transmitted out according to the opposite direction of the incident light.

2. A reflective liquid crystal display according to claim 1, wherein said liquid crystal layer is a nematic liquid crystal layer with a 90 degree twist alignment when said liquid crystal layer is in said first state.

3. A reflective liquid crystal display according to claim 1, wherein said liquid crystal layer is a vertically aligned nematic liquid crystal layer when said liquid crystal layer is in said second state.

4. The reflective liquid crystal display of claim 1, wherein the reflective color mixing layer comprises a plurality of color mixing units, adjacent color mixing units are connected by a black array, the color mixing units comprise a cyan array, a magenta array and a yellow array, adjacent arrays are connected by the black array, and colors of adjacent arrays are different, the cyan array comprises a plurality of cyan color blocks, adjacent cyan color blocks are connected by a black color block, the magenta array comprises a plurality of magenta color blocks, adjacent magenta color blocks are connected by the black color block, the yellow array comprises a plurality of yellow color blocks, and adjacent yellow color blocks are connected by the black color block.

5. The reflection type liquid crystal display of claim 1, wherein the reflection color mixture layer comprises several cyan color blocks, several magenta color blocks and several yellow color blocks, adjacent color blocks are connected by black color blocks, and the colors of the adjacent color blocks are different, and for each color block, there are two other color blocks of different colors adjacent to it, and it appears "pinny" in the positional relationship.

6. A reflective liquid crystal display according to claim 1, wherein said diffusing layer appears white in a light reflecting state.

7. A reflective liquid crystal display according to any of claims 1 to 6, wherein an upper glass substrate is further disposed between the absorptive polarizer and the liquid crystal layer, and a lower glass substrate is further disposed after the reflective color mixing layer.

8. A reflective liquid crystal display according to claim 7, wherein said upper glass substrate is provided with a transparent electrode disposed on a side of said upper glass substrate remote from said liquid crystal layer, and said lower glass substrate is provided with a control electrode disposed on a side of said lower glass substrate adjacent to said reflective color mixing layer.

9. A reflective liquid crystal display according to claim 8, wherein the transparent electrode and the control electrode are connected to a power supply, and the liquid crystal layer is in the first state when the power supply is in an off state, and in the second state when the power supply is in an on state.

10. A reflective liquid crystal display according to claim 8, wherein the material of said transparent electrode comprises indium oxide.

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