TWI835605B - Display device - Google Patents

Abstract

A display device has plural display areas and includes a first substrate, a second substrate, a display medium layer and a pattern layer. The second substrate is overlapped with the first substrate. The display medium layer is disposed between the first substrate and the second substrate, and includes plural display medium molecules, wherein the display medium molecules located at a first display area of the plural display areas are situated in a first steady state, and the display medium molecules located at a second display area of the plural display areas are situated in the first steady state or a second steady state. The pattern layer is disposed at a side of the display medium layer away from the second substrate, and includes a first pattern located at the first display area and a second pattern located at the second display area.

Description

display device

The present invention relates to an optoelectronic device, and in particular to a display device.

Reflective LCD displays have the advantage of energy saving and environmental protection. They use the reflection or absorption of ambient light to produce bright or dark states for display purposes, so there is no need to set up a backlight. Generally speaking, the liquid crystal layer of a reflective LCD can switch between a transmissive state and a reflective state to achieve the dark state and bright state of each sub-pixel.

However, when a reflective LCD display is combined with a three-layer LCD structure to achieve full color using a "superposition" primary color system, the reflectivity of the superimposed sub-pixels of each color will be reduced by at least two-thirds, resulting in the overall appearance of the display. The white reflectance is less than 25%, which not only has low contrast and poor display effect, but also makes it difficult to reduce manufacturing costs.

The present invention provides a display device with improved display effect and reduced manufacturing cost.

One embodiment of the present invention provides a display device having multiple display areas and including: a first substrate, a second substrate, a display medium layer and a pattern layer. The second substrate overlaps the first substrate. The display medium layer is located between the first substrate and the second substrate and includes a plurality of display medium molecules, wherein the display medium molecules located in the first display area of the multiple display areas are in a first stable state and located in the multiple display areas. The display medium molecules in the second display area are in the first stable state or the second stable state. The pattern layer is located on a side of the display medium layer away from the second substrate, and includes a first pattern located in the first display area and a second pattern located in the second display area.

In an embodiment of the present invention, the above-mentioned display medium molecules include cholesteric liquid crystal molecules.

In an embodiment of the present invention, the above-mentioned first stable state is a focal conic state or a vertical state.

In an embodiment of the present invention, the above-mentioned second stable state is a planar state.

In an embodiment of the present invention, the above-mentioned first pattern is located on a side of the first substrate away from the second substrate.

In an embodiment of the present invention, the above-mentioned second pattern is located between the display medium layer and the first substrate or on a side of the first substrate away from the second substrate.

In an embodiment of the present invention, the above-mentioned first pattern is a multi-color pattern.

In an embodiment of the present invention, the above-mentioned second pattern is a monochrome pattern.

In an embodiment of the present invention, the transmittance of the display medium layer located in the above-mentioned first display area is 50% to 90%.

In an embodiment of the present invention, the transmittance of the display medium layer located in the above-mentioned second display area is 0% to 90%.

One embodiment of the present invention provides a display device having a plurality of display areas and including: a first substrate, a second substrate, a display medium layer, a first pattern layer and a second pattern layer. The second substrate is located on one side of the first substrate. The display medium layer is located between the first substrate and the second substrate and includes a plurality of display medium molecules. The first pattern layer and the second pattern layer are respectively located on the first substrate, and the first pattern layer corresponds to the first display area among the plurality of display areas, and the second pattern layer corresponds to the second display area among the plurality of display areas. , wherein the first pattern layer has fixed pattern information, and the second pattern layer is a single color layer.

In an embodiment of the present invention, the display medium molecules in the first display area are in a state of displaying the fixed pattern information of the first pattern layer.

In an embodiment of the present invention, the display medium layer located in the above-mentioned first display area is in a transparent state.

In an embodiment of the present invention, the display medium molecules in the second display area are in a focal conic state or a planar state.

In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. Throughout this specification, the same reference numbers refer to the same elements. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to physical and/or electrical connections. Furthermore, "electrical connection" or "coupling" can mean the presence of other components between two components.

It will be understood that, although the terms "first," "second," "third," etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections /or parts shall not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first "element", "component", "region", "layer" or "section" discussed below could be termed a second element, component, region, layer or section without departing from the teachings herein.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms including "at least one" or "and/or" unless the content clearly dictates otherwise. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. It will also be understood that when used in this specification, the terms "comprising" and/or "including" designate the presence of stated features, regions, integers, steps, operations, elements and/or parts, but do not exclude the presence of one or more The presence or addition of other features, regions, integers, steps, operations, elements, parts and/or combinations thereof.

Additionally, relative terms, such as "lower" or "bottom" and "upper" or "top," may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that relative terms are intended to encompass different orientations of the device in addition to the orientation illustrated in the figures. For example, if the device in one of the figures is turned over, elements described as "below" other elements would then be oriented "above" the other elements. Thus, the exemplary term "lower" may include both "lower" and "upper" orientations, depending on the particular orientation of the drawing. Similarly, if the device in one of the figures is turned over, elements described as "below" or "beneath" other elements would then be oriented "above" the other elements. Thus, the exemplary terms "lower" or "lower" may include both upper and lower orientations.

As used herein, "about," "approximately," or "substantially" includes the stated value and those within ordinary skill in the art, given the specific amount of error associated with the measurement in question (i.e., the limitations of the measurement system). An average within a range of acceptable deviations for a specific value determined by a person. For example, "about" may mean within one or more standard deviations of the stated value, or within ±30%, ±20%, ±10%, ±5%. Furthermore, the terms "approximately", "approximately", or "substantially" used in this article can be used to select a more acceptable deviation range or standard deviation based on optical properties, etching properties, or other properties, and one standard deviation does not apply to all. nature.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be construed to have meanings consistent with their meanings in the context of the relevant technology and the present invention, and are not to be construed as idealistic or excessive Formal meaning, unless expressly defined as such herein.

Example embodiments are described herein with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments. Accordingly, variations in the shape of the illustrations, for example as a result of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments described herein should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, regions shown or described as flat may typically have rough and/or non-linear characteristics. Additionally, the acute angles shown may be rounded. Accordingly, the regions shown in the figures are schematic in nature and their shapes are not intended to show the precise shapes of the regions and are not intended to limit the scope of the claims.

FIG. 1A is a partial top view of a display device 10 according to an embodiment of the present invention. Figure 1B is a schematic cross-sectional view taken along section line A-A' in Figure 1A. In order to simplify the expression of the diagram, FIG. 1A schematically illustrates multiple display areas of the display device 10 and omits other components.

Please refer to FIGS. 1A and 1B simultaneously, the display device 10 has multiple display areas, and the display device 10 includes: a substrate 110 , a substrate 120 , a display medium layer 130 and a pattern layer 140 . The substrate 120 overlaps the substrate 110 . The display medium layer 130 is located between the substrate 110 and the substrate 120 and includes a plurality of display medium molecules DM, wherein the display medium molecules DM located in the display area D1 of the multiple display areas are in a first stable state and are located in the multiple display areas. The display medium molecules DM of the display area D2 are in the first stable state or the second stable state. The pattern layer 140 is located on a side of the display medium layer 130 away from the substrate 120 and includes a pattern P1 and a pattern P2, where the pattern P1 is located in the display area D1 and the pattern P2 is located in the display area D2.

In the display device 10 according to an embodiment of the present invention, by fixing the display medium molecules DM in one display area in a first stable state, the display medium molecules DM in another display area can be in the first stable state and the second stable state. Switching between steady states and matching the patterns P1 and P2 in the pattern layer 140 respectively can provide improved display effects and reduced manufacturing costs. The following will continue to describe the implementation of each element of the display device 10 with reference to FIGS. 1A and 1B , but the present invention is not limited thereto.

In some embodiments, the substrate 110 and the substrate 120 are transparent substrates. For example, the substrate 110 and the substrate 120 are made of glass or organic polymer, but the invention is not limited thereto.

In some embodiments, the substrate 110 further includes a pixel electrode layer (not shown), and the pixel array layer is located on a side of the substrate 110 adjacent to the display medium layer 130 . For example, the above-mentioned pixel electrode layer includes a plurality of pixel electrodes PS, and the plurality of pixel electrodes PS are arranged in an array, for example, but the invention is not limited thereto.

In some embodiments, the substrate 120 further includes a common electrode layer (not shown), and the common electrode layer is located on a side of the substrate 120 adjacent to the display medium layer 130 . The electric field formed by the pixel electrode PS and the common electrode layer can drive the display medium molecules DM in the display medium layer 130 to switch between different stable states.

In some embodiments, the display medium molecules DM include cholesteric liquid crystal (cholesteric liquid crystal, CLC) molecules. In some embodiments, the display medium molecule DM can switch between a focal conic state (Focal conic state), a homeotropic state (Homeotropic State), and a planar state (Planar state). When the display medium molecules DM are in the focal conic state or the vertical state, the display medium layer 130 may exhibit a penetration state. When the display medium molecules DM are in a planar state, the display medium layer 130 may be in a reflective state and reflect part of the incoming light, and the wavelength of the reflected light may be determined by the pitch of the display medium molecules DM.

In some embodiments, the display device 10 further includes an alignment layer 150 , and the alignment layer 150 may be located between the substrate 110 and the display medium layer 130 . In some embodiments, the display device 10 further includes an alignment layer 160 , and the alignment layer 160 may be located between the substrate 120 and the display medium layer 130 .

In some embodiments, the pattern layer 140 is disposed on the surface 111 of the substrate 110 away from the substrate 120 . In some embodiments, the pattern layer 140 can be disposed on the outermost side of the display device 10, so that the pattern layer 140 can be easily replaced according to the needs of usage.

In some embodiments, the pattern P1 of the pattern layer 140 is a multi-color pattern. In some embodiments, the pattern P2 of the pattern layer 140 is a single-color pattern, such as a red pattern, an orange pattern, a yellow pattern, a green pattern, a blue pattern, a purple pattern, or a black pattern.

In some embodiments, the display device 10 has a display area D1 and a display area D2, and the display area D1 is adjacent to the display area D2. There is no restriction on the configuration of the display area D1 and the display area D2. In some embodiments, display area D2 surrounds display area D1. In some embodiments, display area D1 surrounds display area D2.

In the display medium layer 130, the display medium molecules DM located in the display area D1 may remain in the first stable state. In some embodiments, the first stable state is a focal conic state or a vertical state. In other words, the area of the display medium layer 130 located in the display area D1 may remain in the transmission state. In this way, the display area D1 of the display device 10 can directly display the pattern P1 of the pattern layer 140 . When the pattern P1 is a multi-color pattern, the display device 10 including only a single-layer display medium layer 130 can display the multi-color pattern of the pattern P1 without using the traditional three-layer display medium layer structure, so the reflection can be greatly improved. efficiency, while reducing the thickness and manufacturing cost of the display device 10 . In some embodiments, the transmittance of the display medium layer 130 located in the display area D1 is 50% to 90%, such as about 60%, 70% or 80%.

In the display medium layer 130, the display medium molecules DM located in the display area D2 can switch between the first stable state and the second stable state. In some embodiments, the first stable state is a focal conic state or a vertical state, and the second stable state is a planar state. For example, the display device includes a plurality of pixels PX located in the display area D2. When the display medium molecules DM in the pixel PX are all in the focal conic state or the vertical state, the display medium layer 130 in the pixel PX is in the transmission state. When the display medium molecules DM in the pixel PX are all in a planar state, the display medium layer 130 in the pixel PX is in a reflective state. When part of the display medium molecules DM in the pixel PX is in the focal conic state or the vertical state and another part of the display medium molecules DM is in the planar state, the display medium layer 130 in the pixel PX is in a partially penetrating and partially reflective state, so that the picture The display medium layer 130 in the pixel PX can provide different levels of transmittance, so the pixel PX can provide different levels of gray scale. In other words, the display medium layer 130 located in any pixel PX in the display area D2 can be in a reflective state (minimum transmittance), a transmissive state (maximum transmittance), or between a reflective state and a transmissive state. Switch between penetration rates.

In some embodiments, when the display medium molecules DM in the display medium layer 130 are all in a planar state, the transmittance of the display medium layer 130 is approximately 0%. In some embodiments, when the display medium molecules DM in the display medium layer 130 are all in a focal conic state or a vertical state, the transmittance of the display medium layer 130 can be as high as 90%. In some embodiments, when a part of the display medium layer 130 displays the dielectric molecules DM in a focal conic state or a vertical state and another part displays the dielectric molecules DM in a planar state, the transmittance of the display medium layer 130 may be between 0%. to 90%, such as about 12%, 30% or 60%.

In some embodiments, when the display medium layer 130 in the pixel PX is in the transparent state, the pixel PX can display the color of the area corresponding to the pixel PX in the pattern P2 of the pattern layer 140; and when the pixel PX When the display medium layer 130 is in a reflective state, the pixel PX can present a color superimposed with the color reflected by the display medium molecules DM and the color of the area corresponding to the pixel PX in the pattern P2 of the pattern layer 140 . In this way, the display area D2 of the display device 10 can present changing images. In some embodiments, when the pattern P2 of the pattern layer 140 is a monochrome image, the display area D2 can present a changing image composed of monochromatic levels.

In the following, other embodiments of the present invention will be continued to be described using FIGS. 2 to 6 , and the component numbers and related content of the embodiment of FIGS. 1A to 1B will be used, where the same numbers are used to represent the same or similar elements, and Explanations of the same technical content are omitted. For descriptions of omitted parts, reference may be made to the embodiments of FIGS. 1A to 1B , which will not be repeated in the following description.

FIG. 2 is a partial cross-sectional view of the display device 20 according to an embodiment of the present invention. The display device 20 includes a substrate 110, a substrate 120, a display medium layer 130 including a plurality of display medium molecules DM, a pattern layer 141 and a pattern layer 142. Compared with the display device 10 shown in FIGS. 1A to 1B , the display device 20 shown in FIG. 2 is mainly different in that the display device 20 includes two pattern layers, namely the pattern layer 141 and the pattern layer 142 , and The pattern layer 141 and the pattern layer 142 are respectively disposed on the surfaces 111 and 112 of the substrate 110 .

In some embodiments, the pattern layer 141 is disposed on the surface 111 of the substrate 110 away from the substrate 120 , ie, the outermost side of the display device 20 , to facilitate replacement of the pattern layer 141 . In some embodiments, the pattern P1 in the pattern layer 141 is arranged corresponding to the display area D1, and the pattern P1 has fixed pattern information. In some embodiments, the pattern layer 142 is located between the display medium layer 130 and the substrate 110 . In some embodiments, the pattern P2 in the pattern layer 142 is arranged corresponding to the display area D2, and the pattern layer 142 is a monochrome layer, and the pattern P2 is a monochrome pattern.

In some embodiments, the display medium layer 130 of the display area D1 is in a state of displaying the fixed pattern information of the pattern P1 in the pattern layer 141 . In some embodiments, the display medium layer 130 located in the display area D1 is fixed in a transparent state. In some embodiments, the display medium molecules DM located in the display area D1 are fixed in a focal conic state or a vertical state.

In some embodiments, the display medium layer 130 located in the display area D2 is in a transmissive state and/or a reflective state. In some embodiments, a part of the display medium molecules DM located in the display area D2 is in a focal conic state or a vertical state, and another part of the display medium molecules DM located in the display area D2 is in a planar state. In some embodiments, the display medium layer 130 located in the display area D2 is in a state of displaying a changing image. In some embodiments, the above-mentioned changing images refer to different images presented by changing the transmittance of the display medium layer 130 in each pixel PX. In some embodiments, each pixel PX of the display area D2 is in a state of displaying changing color levels. In some embodiments, the display area D2 displays a monochromatic gradation change image formed by superimposing monochromatic layers of the display medium layer 130 and the pattern layer 142 with different transmittances in each pixel PX. In some embodiments, when the system is not powered, the display medium molecules DM in the display area D1 and the display area D2 are all in a focal conic state or a vertical state. In this case, the display area D1 displays a fixed pattern P1 of the pattern layer 141 The pattern information is changed, and the display area D2 displays the monochrome image of the pattern P2 of the pattern layer 142 .

FIG. 3A is a schematic top view of the pattern layer 140 of the display device 30 according to an embodiment of the present invention. FIG. 3B is a schematic diagram of a changing image displayed on the display medium layer 130 of the display area D2 of the display device 30 according to an embodiment of the present invention. FIG. 3C is a schematic diagram of an image displayed by the display device 30 according to an embodiment of the present invention.

Compared with the display device 10 shown in FIGS. 1A to 1B , the display device 30 shown in FIG. 3 is mainly different in that the display device 30 has a display area D11 , a display area D12 , a display area D21 and a display area D22 , and the pattern layer 140 of the display device 30 includes the pattern P11, the pattern P12, the pattern P21 and the pattern P22, wherein the pattern P11 is located in the display area D11, the pattern P12 is located in the display area D12, the pattern P21 is located in the display area D21, and the pattern P22 is located in the display area D11. Area D22.

In some embodiments, the pattern P11 or the pattern P12 is a color pattern produced by, for example, color printing. In some embodiments, the pattern P11 is a pattern that displays "TOTAL PRICE", the pattern P12 is a pattern that displays the brand name and address, and the text or symbols in the pattern P11 and pattern P12 have colors, such as red, orange, yellow, Green, blue, purple, etc. Since the areas of the display medium layer 130 located in the display area D11 and the display area D12 remain in the transmission state, the display area D11 and the display area D12 of the display device 30 can directly display the transmission patterns of the pattern P11 and the pattern P12 respectively. Therefore, the display area D11 and the display area D12 can display fixed information.

In some embodiments, the pattern P21 and the pattern P22 are black images, and the display medium layer 130 located in each pixel of the display area D21 and the display area D22 can mix different proportions of the transmission state and the reflection state to form different patterns. Switch between penetration levels. In some embodiments, the display medium layer 130 located in each pixel of the display area D21 and the display area D22 can provide 16 transmittance levels to display 16 color levels in conjunction with the background images of the pattern P21 and the pattern P22. However, The present invention is not limited to this.

In some embodiments, the display medium molecules DM in the display medium layer 130 can reflect green light, so that when the display medium layer 130 in the pixel of the display area D21 or the display area D22 is in a reflective state, the pixel can provide a green pixel. When the display medium layer 130 in the pixel of the display area D21 or the display area D22 is in a transmissive state, the pixel can provide a black pixel of the corresponding pattern P21 or pattern P22.

In this way, the display area D21 or the display area D22 of the display device 30 can display, for example, a text pattern of black on green or green on black. In some embodiments, the display area D21 or the display area D22 of the display device 30 can display black on green or green on black text patterns and/or barcode patterns. The above barcode patterns are, for example, one-dimensional barcodes (such as barcodes) or two-dimensional barcodes. Barcode (such as QR code). In some embodiments, the display area D21 and the display area D22 are capable of displaying a single color gradient image.

In some embodiments, when the display medium layer 130 in the pixel in the display area D21 or the display area D22 is in a reflective state, the display device 30 can display a green picture in the area corresponding to the pixel in the display area D21 or the display area D22. The pixels overlapped with the black pattern of the pattern P21 or the pattern P22, such as green pixels with better contrast. In this way, the display device 30 can provide the final picture as shown in FIG. 3C. In some embodiments, when the pattern P21 and the pattern P22 are green and the display medium layer 130 in the pixels of the display area D21 or the display area D22 is in a reflective state, the display device 30 can be in the display area D21 or the display area D22. The area corresponding to this pixel displays pixels in which green pixels are overlaid with the green image of pattern P21 or pattern P22, for example, green pixels with a darker color. In some embodiments, display device 30 may serve as an electronic tag. In some embodiments, the white reflectance of display device 30 is greater than 50%.

FIG. 4 is a schematic diagram of an image displayed by the display device 40 according to an embodiment of the present invention. In some embodiments, the display areas D11 to D18 of the display device 40 can display fixed information, and the display areas D21 to D26 of the display device 40 can display changing information. In some embodiments, the display device 40 can be used as an item label, in which the display areas D11 to D18 can display fixed items such as experimental item temporary storage labels, custodians, names, extensions, job numbers, mobile phones, items, temporary storage periods, etc. Mark, and display areas D21 to D26 can display changing information such as name, extension, work number, mobile phone, items, temporary storage period, etc.

FIG. 5 is a schematic diagram of an image displayed by the display device 50 according to an embodiment of the present invention. In some embodiments, the display areas D11 to D12 of the display device 50 display fixed information, and the display areas D21 to D27 of the display device 50 display changing information. In some embodiments, the display device 50 can be used as a stop sign, and a part of the display areas D23 to D27 displays fixed information, and another part of the area displays changing information. For example, the display area D11 can display a fixed pattern of the outer frame of the station sign; the display area D12 can display fixed information such as the station name; the display area D21 can display changing information such as weather, date, time, etc.; the display area D22 can display the train arrival. The change information of the station status; the display area D23 can display the change information of the train schedule in the train arrival status displayed by D22; the display area D24 to the display area D27 can display the change information of multiple train schedules that are about to arrive at the station. For example, in the display area D27, the display area D2711 and the display area D2712 display fixed information. The display area D2711 displays the station name of the current station, and the display area D2712 displays the train status as arriving at the station. In addition, the display areas D2721 to D2724 can display change information. The display area D2721 displays the train type pattern, such as a bus or a light rail; the display area D2722 displays the train schedule; the display area D2723 displays the arrival time; and the display area D2724 displays the current time. The train's destination.

FIG. 6 is a schematic diagram of an image displayed by the display device 60 according to an embodiment of the present invention. In some embodiments, the display device 60 may serve as an electronic Spring Festival couplet. For example, the display device 60 has a display area D1 and a display area D2, wherein the display area D1 surrounds the display area D2. In some embodiments, the display area D1 can display fixed Spring Festival couplets color pictures, and the display area D2 can display changing greetings. In this way, the display device 60 can display different congratulatory messages as, for example, the location of the display device changes.

To sum up, the display device of the present invention fixes the display medium layer of a display area in a transparent state, so that the display area can display the corresponding pattern with fixed pattern information in the pattern layer. In addition, the display device of the present invention allows the display medium layer of another display area to switch between a transmission state and a reflection state, so that the other display area can display a changing pattern in conjunction with the corresponding monochromatic layer in the pattern layer. Image, thereby providing improved display effects and reduced manufacturing costs, and is suitable for applications such as electronic labels, station signs, and electronic Spring Festival couplets.

Although the present invention has been disclosed above through embodiments, they are not intended to limit the present invention. Anyone with ordinary knowledge in the technical field may make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the appended patent application scope.

10,20,30,40,50,60:Display device 110,120:Substrate 111,112: Surface 130: Display media layer 140,141,142:Pattern layer 150,160:Alignment layer A-A’: hatch line D1,D2,D11-D18,D21-D27: display area D2711-D2712,D2721-D2724: display area DM: display medium molecules P1,P11,P12,P2,P21,P22: Pattern PS: Pixel structure PX: pixel

FIG. 1A is a partial top view of a display device 10 according to an embodiment of the present invention. Figure 1B is a schematic cross-sectional view taken along section line A-A' in Figure 1A. FIG. 2 is a partial cross-sectional view of the display device 20 according to an embodiment of the present invention. FIG. 3A is a schematic top view of the pattern layer 140 of the display device 30 according to an embodiment of the present invention. FIG. 3B is a schematic diagram of a changing image displayed on the display medium layer 130 of the display area D2 of the display device 30 according to an embodiment of the present invention. FIG. 3C is a schematic diagram of an image displayed by the display device 30 according to an embodiment of the present invention. FIG. 4 is a schematic diagram of an image displayed by the display device 40 according to an embodiment of the present invention. FIG. 5 is a schematic diagram of an image displayed by the display device 50 according to an embodiment of the present invention. FIG. 6 is a schematic diagram of an image displayed by the display device 60 according to an embodiment of the present invention.

10:Display device

110,120:Substrate

111:Surface

130: Display media layer

140:Pattern layer

150,160:Alignment layer

D1, D2: display area

DM: display medium molecules

P1,P2: pattern

PS: Pixel structure

PX: pixel

Claims (14)

A display device has multiple display areas, the display device includes: first substrate; a second substrate overlapping the first substrate; A display medium layer is located between the first substrate and the second substrate, and includes a plurality of display medium molecules, wherein the display medium molecules located in a first display area among the plurality of display areas are in a first Steady state, the display medium molecules located in the second display area among the plurality of display areas are in the first steady state or the second steady state; and The pattern layer is located on the side of the display medium layer away from the second substrate, and includes: A first pattern located in the first display area; and The second pattern is located in the second display area. The display device according to claim 1, wherein the display medium molecules comprise cholesteric liquid crystal molecules. The display device according to claim 1, wherein the first stable state is a focal conic state or a vertical state. The display device according to claim 1, wherein the second stable state is a planar state. The display device of claim 1, wherein the first pattern is located on a side of the first substrate away from the second substrate. The display device of claim 5, wherein the second pattern is located between the display medium layer and the first substrate or on a side of the first substrate away from the second substrate. The display device of claim 1, wherein the first pattern is a multi-color pattern. The display device according to claim 1, wherein the second pattern is a monochrome pattern. The display device of claim 1, wherein the display medium layer located in the first display area has a transmittance of 50% to 90%. The display device of claim 1, wherein the display medium layer located in the second display area has a transmittance of 0% to 90%. A display device has multiple display areas, the display device includes: first substrate; a second substrate located on one side of the first substrate; A display medium layer is located between the first substrate and the second substrate and includes a plurality of display medium molecules; and A first pattern layer and a second pattern layer are respectively located on the first substrate, and the first pattern layer corresponds to the first display area among the plurality of display areas, and the second pattern layer corresponds to the first display area. In the second display area among the plurality of display areas, the first pattern layer has fixed pattern information, and the second pattern layer is a single color layer. The display device according to claim 11, wherein the display medium molecules in the first display area are in a state of displaying the fixed pattern information of the first pattern layer. The display device according to claim 11, wherein the display medium layer located in the first display area is in a transparent state. The display device according to claim 11, wherein the display medium molecules in the second display area are in a focal conic state or a planar state.