Anti-counterfeit display panel and anti-counterfeit label

Abstract

The embodiment of the utility model discloses an anti-counterfeiting display panel and an anti-counterfeiting label, the anti-counterfeiting display panel comprises a graphic area and a background area, the anti-counterfeiting display panel further comprises an array substrate, a color film substrate and a liquid crystal layer, a color resistance layer is arranged in the color film substrate, the color resistance layer is located in the graphic area and / or the background area, and the liquid crystal layer is located in the array substrate. The color of the color resistance layer in the graphic area is different from that of the color resistance layer in the background area; the liquid crystal layer is located between the array substrate and the color film substrate, and at least part of liquid crystal molecules in the liquid crystal layer are in a reflection state. According to the technical scheme provided by the embodiment of the utility model, in a dark state environment, when a light source is adopted to irradiate the display panel, the graphic area and the background area can present different color changes on the front side and the back side of the display panel, so that different display effects are presented, the anti-counterfeiting characteristic is enhanced, and the anti-counterfeiting effect is improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to display technical field, especially relate to a kind of anti-fake display panel and anti-fake label. BACKGROUND

[0002] Anti-fake technology is a kind of identification, prevent counterfeiting technical means.Nowadays, commodity counterfeiting has become a problem affecting multiple industries, the proliferation of counterfeit goods can lead to loss of corporate profits, damage brand, lose market share, but also can cause serious threat to the health and safety of consumers.

[0003] At present, the main method of anti-fake is to identify true and false by scanning two-dimensional code, tracking traceability or querying anti-fake verification code and other ways, but these methods can be broken through by counterfeiters, resulting in poor anti-fake effect, exacerbating the phenomenon of imitation. UTILITY MODEL CONTENT

[0004] The embodiment of the utility model provides a kind of anti-fake display panel and anti-fake label, to enhance anti-fake characteristic, improve anti-fake effect.

[0005] According to an aspect of the utility model, an anti-fake display panel is provided, the anti-fake display panel includes a graphic area and a background area;The anti-fake display panel further includes:

[0006] Array substrate;

[0007] Color film substrate, the color film substrate is provided with color resistance layer, the color resistance layer is located in the graphic area and / or the background area, the color of the color resistance layer in the graphic area is different from the color of the color resistance layer in the background area;

[0008] Liquid crystal layer, the liquid crystal layer is located between the array substrate and the color film substrate, at least part of liquid crystal molecules in the liquid crystal layer is in reflective state.

[0009] Optionally, the liquid crystal layer is a cholesteric liquid crystal layer.

[0010] Optionally, the color film substrate includes first color color resistance layer and second color color resistance layer, the first color color resistance layer is located in the graphic area, and the second color color resistance layer is located in the background area;

[0011] The liquid crystal layer includes first color liquid crystal layer, the liquid crystal layer in the graphic area and the background area is in reflective state;Or,

[0012] One of the liquid crystal layer in the graphic area and the liquid crystal layer in the background area is in transparent state, and the other is in reflective state.

[0013] Optionally, the color filter substrate comprises a first color color resistance layer, and the first color color resistance layer is located in the pattern area.

[0014] The liquid crystal layer comprises a second color liquid crystal layer, and the liquid crystal layer in the pattern area and the background area is in a reflective state.

[0015] One of the liquid crystal layer in the pattern area and the liquid crystal layer in the background area is in a reflective state, and the other is in a transparent state.

[0016] Optionally, the color filter substrate comprises a second color color resistance layer, and the second color color resistance layer is located in the background area.

[0017] The liquid crystal layer comprises a first color liquid crystal layer, and the liquid crystal layer in the pattern area and the background area is in a reflective state.

[0018] One of the liquid crystal layer in the pattern area and the liquid crystal layer in the background area is in a reflective state, and the other is in a transparent state.

[0019] Optionally, the first color and the second color are one of red, green or blue, and the first color and the second color are different colors.

[0020] Optionally, at least one through hole is arranged on the color resistance layer, and the through hole penetrates the color resistance layer.

[0021] Optionally, the array substrate comprises a first substrate and a pixel electrode, the pixel electrode is located on the side of the first substrate close to the liquid crystal layer, and the pixel electrodes corresponding to the pattern area and the background area are insulated from each other.

[0022] The color filter substrate further comprises a second substrate and a common electrode, and the common electrode is located on the side of the color resistance layer away from the second substrate.

[0023] The anti-fake display panel further comprises a first transparent cover plate and a second transparent cover plate, the first transparent cover plate is located on the side of the array substrate away from the liquid crystal layer, and the second transparent cover plate is located on the side of the color filter substrate away from the liquid crystal layer.

[0024] Optionally, a black matrix is arranged between adjacent color resistance layers of different colors.

[0025] According to another aspect of the present application, an anti-fake label is provided, and the anti-fake label comprises the anti-fake display panel provided in any embodiment of the present application.

[0026] The technical scheme provided by the embodiment of the utility model, through setting the liquid crystal layer between the array substrate and the color film substrate as at least partial liquid crystal molecules are in the reflection state, combining the color resistance layer in the pattern area and / or the background area, when the light source irradiates the display panel in the dark state environment, the pattern area and the background area can present different color changes on the front and back sides of the display panel, thereby presenting different display effects, and further enhancing the anti-fake features, which is beneficial to improving the anti-fake effect.

[0027] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the utility model, nor is it used to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.

[0029] Figure 1 The plane structure schematic diagram of the anti-fake display panel provided by the embodiment of the utility model;

[0030] Figure 2 The cross-sectional structure schematic diagram of the anti-fake display panel provided by the embodiment of the utility model;

[0031] Figure 3 The cross-sectional structure schematic diagram of another anti-fake display panel provided by the embodiment of the utility model;

[0032] Figure 4 The light path schematic diagram of the anti-fake display panel provided by the embodiment of the utility model;

[0033] Figure 5 The light path schematic diagram of another anti-fake display panel provided by the embodiment of the utility model;

[0034] Figure 6 The cross-sectional structure schematic diagram of another anti-fake display panel provided by the embodiment of the utility model;

[0035] Figure 7 The light path schematic diagram of another anti-fake display panel provided by the embodiment of the utility model;

[0036] Figure 8 The light path schematic diagram of another anti-fake display panel provided by the embodiment of the utility model;

[0037] Figure 9The section structure schematic view of another anti-fake display panel provided by the embodiment of the utility model;

[0038] Figure 10 The light path schematic view of another anti-fake display panel provided by the embodiment of the utility model;

[0039] Figure 11 The light path schematic view of another anti-fake display panel provided by the embodiment of the utility model;

[0040] Figure 12 The section structure schematic view of another anti-fake display panel provided by the embodiment of the utility model;

[0041] Among them, GA - graphic area;BA - background area;

[0042] 10 - array substrate;101 - first substrate;102 - pixel electrode;

[0043] 20 - color film substrate;201 - first color resist layer;202 - second color resist layer;203 - black matrix;204 - second substrate;205 - common electrode;

[0044] 31 - first transparent cover plate;32 - second transparent cover plate;30 - liquid crystal layer;301 - liquid crystal molecule;

[0045] 40 - light source. DETAILED DESCRIPTION

[0046] In order to make the personnel in the technical field better understand the utility model scheme, below will combine the drawings in the embodiment of the utility model, the technical scheme in the embodiment of the utility model is described clearly and completely, obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without making creative labor should belong to the scope of the utility model protection.

[0047] It should be noted that the terms "first", "second" and the like in the description and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a particular order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any modification thereof are intended to cover non-exclusive inclusion, for example, the process, method, system, product or equipment including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0048] Figure 1 This is a schematic diagram of the planar structure of an anti-counterfeiting display panel provided in an embodiment of the present invention. Figure 2 This is a cross-sectional structural diagram of an anti-counterfeiting display panel provided in an embodiment of the present invention, with reference to... Figure 1 and Figure 2 The anti-counterfeiting display panel provided in this implementation includes a graphics area GA and a background area BA, and also includes:

[0049] Array substrate 10 and color filter substrate 20, wherein a color resist layer is disposed in the color filter substrate 20. Figure 1 and Figure 2 (Not shown in the image), the resist layer is located in the graphic area GA and / or the background area BA, and the resist layer in the graphic area GA has a different color than the resist layer in the background area BA; it also includes:

[0050] The liquid crystal layer 30 is located between the array substrate 10 and the color filter substrate 20, and at least some of the liquid crystal molecules 301 in the liquid crystal layer 30 are in a reflective state.

[0051] The graphic area GA has a corresponding pattern to serve as an anti-counterfeiting measure. Specifically, it can be a product logo, text, letters, numbers, QR code, barcode, or other special identification pattern to enhance anti-counterfeiting features. The background area BA can be used to highlight the pattern of the graphic area GA. The background area BA can be a solid color background or a non-solid color background.

[0052] In this embodiment, the liquid crystal layer 30 has at least a reflective function, capable of reflecting light of the corresponding color. The color resist layer disposed in the color filter substrate 20 can be located in the graphic area GA, the background area BA, or both the graphic area GA and the background area BA. Combined with the reflective function of the liquid crystal layer 30, the graphic area GA and the background area BA can present different color changes on the front and back sides of the display panel, thereby achieving the anti-counterfeiting function.

[0053] The technical solution provided by this utility model embodiment sets the liquid crystal layer 30 located between the array substrate 10 and the color filter substrate 20 to a state in which at least some liquid crystal molecules are in a reflective state. Combined with the color resist layer located in the graphic area GA and / or the background area BA, in a dark environment, when the display panel is illuminated by a light source, the graphic area GA and the background area BA can present different color changes on the front and back sides of the display panel, thereby presenting different display effects, thereby enhancing anti-counterfeiting features and improving anti-counterfeiting effect.

[0054] Optionally, the liquid crystal layer 30 is a cholesteric liquid crystal layer. The cholesteric liquid crystal has two stable textures of P state (Planar, planar texture state, reflection state), FC state (Focal Conic, focal conic texture state, scattering state) and H state (transparent state). The P state and the FC state can be converted to each other under the action of a certain electric field, and neither the P state nor the FC state needs to be maintained by voltage. The P state or the FC state can be maintained for a long time without voltage, which is beneficial to realize low-power operation. When the cholesteric liquid crystal is in the P state, the reflection spectrum of the cholesteric liquid crystal is in the visible spectrum, and the cholesteric liquid crystal reflects bright colored light. The specific reflected color can be set according to the pitch of the cholesteric liquid crystal. By changing the pitch of the cholesteric liquid crystal, the reflection wavelength of the cholesteric liquid crystal can be controlled. When the cholesteric liquid crystal is in the FC state, the cholesteric liquid crystal no longer reflects the above-mentioned colored light, and the light can be scattered and transmitted through the cholesteric liquid crystal. When the cholesteric liquid crystal is in the H state, the cholesteric liquid crystal no longer reflects the above-mentioned colored light, and the light can directly transmit through the cholesteric liquid crystal. Illustratively, under zero voltage, the initial state of the cholesteric liquid crystal is the P state. The arrangement direction of the cholesteric liquid crystal is different, and the reflected visible light spectrum is also different. The reflection spectrum band is proportional to the pitch and birefringence of the cholesteric liquid crystal. When a voltage is applied to both ends of the cholesteric liquid crystal and slowly decreased to zero, the cholesteric liquid crystal rotates and stops in the FC state.

[0055] Figure 3 Another anti-fake display panel cross-sectional structure schematic diagram provided by the embodiment of the utility model, reference Figure 3 On the basis of the above embodiment, optionally, the array substrate 10 includes a first substrate 101 and a pixel electrode 102, the pixel electrode 102 is located on the side of the first substrate 101 close to the liquid crystal layer 30, and the pixel electrodes 102 corresponding to the graphic area GA and the background area BA are insulated from each other; the color film substrate 20 further includes a second substrate 204 and a common electrode 205, and the common electrode 205 is located on the side of the color resistance layer away from the second substrate 204.

[0056] Among them, the common electrode 205 is an integral structure, and the same voltage is transmitted on the common electrode 205. The pixel electrode 102 is a block structure, and by applying voltage to the pixel electrode 102 corresponding to the graphic area GA and / or the background area BA, the state of the cholesteric liquid crystal corresponding to the graphic area GA and / or the background area BA can be changed.

[0057] Optionally, the anti-fake display panel further comprises a first transparent cover plate 31 and a second transparent cover plate 32, the first transparent cover plate 31 is located on the side of the array substrate 10 away from the liquid crystal layer 30, and the second transparent cover plate 32 is located on the side of the color film substrate 20 away from the liquid crystal layer 30. White light can be irradiated from the front and back of the anti-fake display panel respectively to obtain different display effects. The side of the second transparent cover plate 32 can be the front of the anti-fake display panel, and the side of the first transparent cover plate 31 can be the back of the anti-fake display panel.

[0058] With reference to the foregoing Figure 3 In an optional embodiment provided in the embodiment, the color film substrate 20 comprises a first color color resistance layer 201 and a second color color resistance layer 202, the first color color resistance layer 201 is located in the pattern area GA, and the second color color resistance layer 202 is located in the background area BA. A black matrix 203 is arranged between adjacent color resistance layers of different colors to prevent crosstalk between light of different colors. For example, the black matrix 203 is arranged between the first color color resistance layer 201 and the second color color resistance layer 202.

[0059] In the embodiment, the liquid crystal layer 30 comprises a first color liquid crystal layer, the first color liquid crystal layer can reflect light of the first color when in a reflection state, and light of other colors is directly transmitted through the first color liquid crystal layer. The liquid crystal layer 30 located in the pattern area GA and the background area BA is in the reflection state; or one of the liquid crystal layer 30 located in the pattern area GA and the liquid crystal layer 30 located in the background area BA is in the transparent state, and the other is in the reflection state.

[0060] Figure 4 A light path schematic diagram of the anti-fake display panel provided in the embodiment is shown in the figure, and specifically Figure 3 The light path schematic diagram of the anti-fake display panel shown in the figure when the liquid crystal layer 30 located in the pattern area GA and the background area BA is in the reflection state, wherein the light source 40 emits white light. Referring to Figure 4 In a dark state environment, when the light source 40 irradiates from the front of the anti-fake display panel (the light path diagram on the left side of the red dashed line), the light is incident from the second transparent cover plate 32, in the background area BA, only the second color light enters the liquid crystal layer 30 after the white light passes through the second color color resistance layer 202, and the second color light is transmitted through the liquid crystal layer 30 and emitted from the first transparent cover plate 31. In the pattern area GA, only the first color light enters the liquid crystal layer 30 after the white light passes through the first color color resistance layer 201, and is emitted from the first color color resistance layer 201 after being reflected by the liquid crystal layer 30. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the pattern area GA is of the first color and the background area BA is black (dark state). The display effect observed on the side of the first transparent cover plate 31 is that the pattern area GA is black (dark state) and the background area BA is of the second color.

[0061] When the light source 40 irradiates from the back of the anti-fake display panel (the light path diagram on the right side of the red dotted line), the light enters from the first transparent cover plate 31, and when the white light enters the liquid crystal layer 30, the light of the first color is reflected back and exits again through the first transparent cover plate 31, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20, and only the light of the second color can be emitted from the second color color resistance layer 202. In the graphic area GA, when the white light enters the liquid crystal layer 30, the light of the first color is reflected back and exits again through the second transparent cover plate 32, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20 and is filtered out by the first color color resistance layer 202. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is black (dark state) and the background area BA is the second color. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is the first color and the background area BA is the first color.

[0062] Exemplarily, the first color is red and the second color is green. When the light source 40 irradiates from the front of the anti-fake display panel, in the graphic area GA, the white light transmits red light when passing through the red color resistance layer, and the red light is reflected by the red cholesteric liquid crystal layer and then exits through the red color resistance layer again, and no light of other colors is transmitted from the red cholesteric liquid crystal layer. In the background area BA, the white light transmits green light when passing through the green color resistance layer, and the green light is transmitted after passing through the red cholesteric liquid crystal layer. Therefore, the display effect of the anti-fake display panel is that the background area BA presents a dark state and the graphic area GA presents red.

[0063] When the light source 40 irradiates from the back of the anti-fake display panel, in the graphic area GA, the white light reflects red light after passing through the red cholesteric liquid crystal layer, and transmits green light and blue light, and the green light and the blue light are both absorbed when passing through the red color resistance layer again. In the background area BA, the white light reflects red light after passing through the red cholesteric liquid crystal layer, and transmits green light and blue light, and transmits green light when passing through the green color resistance layer again. Therefore, the display effect of the anti-fake display panel is that the background area BA presents green and the graphic area GA presents a dark state.

[0064] Of course, in other embodiments, other color combinations can also be used, and the embodiment is only illustratively shown as one implementation, and is not a limitation on the first color and the second color. For example, the first color and the second color can be one of red, green or blue, and the first color and the second color are different colors.

[0065] Figure 5 Another light path schematic diagram of an anti-fake display panel provided by the embodiment of the utility model, specifically Figure 3The light path schematic diagram of one of the liquid crystal layer 30 located in the graphic area GA and the liquid crystal layer 30 located in the background area BA is in the transparent state, and the other is in the reflective state, as shown in the figure. Figure 5 As shown, for example, the liquid crystal layer 30 located in the graphic area GA is applied with a voltage to be in the transparent state, and the liquid crystal layer 30 located in the background area BA remains in the reflective state. In a dark state environment, when the light source 40 is used to irradiate from the front of the anti-fake display panel (the light path diagram on the left side of the red dashed line), the light is incident from the second transparent cover plate 32, and in the background area BA, only the second color light enters the liquid crystal layer 30 after the white light passes through the second color color resistance layer 202. Since the liquid crystal layer 30 reflects the first color light, the second color light transmits through the liquid crystal layer 30 and is emitted from the first transparent cover plate 31. In the graphic area GA, only the first color light enters the liquid crystal layer 30 after the white light passes through the first color color resistance layer 201, and the first color light is transmitted through the transparent liquid crystal layer 30. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is in a dark state, and the background area BA is in a dark state. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is the first color, and the background area BA is the second color.

[0066] When the light source 40 is used to irradiate from the back of the anti-fake display panel (the light path diagram on the right side of the red dashed line), the light is incident from the first transparent cover plate 31, and in the background area BA, when the white light is incident to the liquid crystal layer 30, the first color light is reflected back to pass through the first transparent cover plate 31 again and is emitted, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20, and only the second color light can be emitted from the second color color resistance layer 202. In the graphic area GA, when the white light is incident to the liquid crystal layer 30, the white light is transmitted to the color film substrate 20, and the first color light is transmitted after passing through the first color color resistance layer 202. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is the first color, and the background area BA is the second color. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is in a dark state, and the background area BA is the first color.

[0067] wherein, Figure 5 The specific light colors of the light path are not described again.

[0068] Figure 6 Another anti-fake display panel cross-sectional structure schematic diagram provided by the embodiment of the utility model, refer to Figure 6In another optional embodiment provided in this example, the color filter substrate 20 includes a first color resist layer 201 located in the pattern area GA; the liquid crystal layer 30 includes a second color liquid crystal layer, which, when in a reflective state, reflects light of the second color, while light of other colors is directly transmitted through the second color liquid crystal layer. Both the liquid crystal layers 30 located in the pattern area GA and the background area BA are in a reflective state; alternatively, one of the liquid crystal layers 30 located in the pattern area GA and the liquid crystal layer 30 located in the background area BA is in a transparent state, and the other is in a reflective state.

[0069] Figure 7 This is a schematic diagram of the optical path of another anti-counterfeiting display panel provided in an embodiment of the present invention. Figure 6 The diagram shows the optical path when the liquid crystal layers 30 in both the graphic area GA and the background area BA of the anti-counterfeiting display panel are in a reflective state. (Refer to...) Figure 7 In a dark environment, when the light source 40 illuminates the front of the anti-counterfeiting display panel (light path diagram to the left of the red dotted line), the light enters from the second transparent cover plate 32. In the background area BA, white light directly enters the liquid crystal layer 30. Since the liquid crystal layer 30 reflects the second color light, the second color light is emitted again from the second transparent cover plate 32. Other colors of light are transmitted through the liquid crystal layer 30 and emitted from the first transparent cover plate 31. In the graphic area GA, after the white light passes through the first color resist layer 201, only the first color light enters the liquid crystal layer 30, and the liquid crystal layer 30 transmits the first color light. Therefore, the display effect observed on the side of the second transparent cover plate 32 is: the graphic area GA is dark, and the background area BA is the second color. The display effect observed on the side of the first transparent cover plate 31 is: the graphic area GA is the first color, and the background area BA is a mixture of the first color and other colors (for example, if the first color is red and the second color is green, then the background area BA is purple, a mixture of red and blue).

[0070] When the light source 40 irradiates from the back of the anti-fake display panel (the light path diagram on the right side of the red dotted line), the light enters from the first transparent cover plate 31, and in the background area BA, when the white light enters the liquid crystal layer 30, the light of the second color is reflected back and passes through the first transparent cover plate 31 again and is emitted, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20 and is emitted from the second transparent cover plate 32. In the graphic area GA, when the white light enters the liquid crystal layer 30, the light of the second color is reflected back and passes through the second transparent cover plate 32 again and is emitted, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20, and the first color color resistance layer 201 transmits the light of the first color. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is the first color, and the background area BA is a mixture of the first color and other colors. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is the second color, and the background area BA is the second color.

[0071] Figure 8 Another light path schematic diagram of the anti-fake display panel provided by the embodiment of the utility model is provided, and specifically is Figure 6 The light path schematic diagram of one of the liquid crystal layer 30 located in the graphic area GA and the liquid crystal layer 30 located in the background area BA in the anti-fake display panel shown in the figure is in the transparent state, and the other is in the reflective state, as shown in the figure Figure 8 For example, the liquid crystal layer 30 located in the background area BA is applied with a voltage to make it in the transparent state, and the liquid crystal layer 30 located in the graphic area GA remains in the reflective state. In the dark state environment, when the light source 40 irradiates from the front of the anti-fake display panel (the light path diagram on the left side of the red dotted line), the light enters from the second transparent cover plate 32, and in the background area BA, the white light directly enters the liquid crystal layer 30, and the liquid crystal layer 30 in the transparent state transmits the white light, therefore, the white light transmits through the liquid crystal layer 30 and is emitted from the first transparent cover plate 31. And in the graphic area GA, only the light of the first color enters the liquid crystal layer 30 after the white light passes through the first color color resistance layer 201, and the liquid crystal layer 30 transmits the light of the first color. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is in the dark state, and the background area BA is in the dark state. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is the first color, and the background area BA is in the bright state (white).

[0072] When the light source 40 irradiates from the back of the anti-fake display panel (the light path diagram on the right side of the red dotted line), the light enters from the first transparent cover plate 31, and in the background area BA, the liquid crystal layer 30 in the transparent state transmits the white light, and the color film substrate 20 transmits the white light. In the graphic area GA, when the white light is incident on the liquid crystal layer 30 in the reflective state, the light of the second color is reflected back, and then is emitted again through the second transparent cover plate 32, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20, and the first color color resistance layer 201 transmits the light of the first color. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is of the first color, and the background area BA is in the bright state. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is of the second color, and the background area BA is in the dark state.

[0073] Figure 9 Another anti-fake display panel provided by the embodiment of the utility model provides a cross-sectional structure schematic diagram of the anti-fake display panel, and the cross-sectional structure schematic diagram of the anti-fake display panel is as shown in Figure 9 In still another optional embodiment provided by the embodiment, the color film substrate 20 comprises a second color color resistance layer 202, and the second color color resistance layer 202 is located in the background area BA; the liquid crystal layer 30 comprises a first color liquid crystal layer, and the first color liquid crystal layer can reflect the light of the first color when in the reflective state, and the light of other colors is directly transmitted through the first color liquid crystal layer. The liquid crystal layer 30 located in the graphic area GA and the background area BA is in the reflective state; or one of the liquid crystal layer 30 located in the graphic area GA and the liquid crystal layer 30 located in the background area BA is in the transparent state, and the other is in the reflective state.

[0074] Figure 10 Another anti-fake display panel provided by the embodiment of the utility model provides a cross-sectional structure schematic diagram of the anti-fake display panel, and the cross-sectional structure schematic diagram of the anti-fake display panel is as shown in Figure 9 The light path schematic diagram of the anti-fake display panel shown in the figure when the liquid crystal layer 30 located in the graphic area GA and the background area BA is in the reflective state, and the light path schematic diagram is as shown in Figure 10In the dark state, when the light source 40 irradiates from the front of the anti-fake display panel (the light path diagram on the left side of the red dashed line), the light enters from the second transparent cover plate 32, in the graphic area GA, the white light directly enters the liquid crystal layer 30, and the first color light is reflected by the liquid crystal layer 30, so that the first color light is emitted from the second transparent cover plate 32 again, and the light of other colors is transmitted through the liquid crystal layer 30 and emitted from the first transparent cover plate 31. In the background area BA, only the second color light enters the liquid crystal layer 30 after the white light passes through the second color color resistance layer 202, and the liquid crystal layer 30 transmits the second color light. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is the first color, and the background area BA is dark. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is a mixture of the second color and other colors (for example, the first color is red, and the second color is green, so that the graphic area GA is cyan mixed with green and blue).

[0075] When the light source 40 irradiates from the back of the anti-fake display panel (the light path diagram on the right side of the red dashed line), the light enters from the first transparent cover plate 31, in the graphic area GA, when the white light enters the liquid crystal layer 30, the light of the first color is reflected back and emitted through the first transparent cover plate 31 again, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20 and emitted from the second transparent cover plate 32. In the background area BA, when the white light enters the liquid crystal layer 30, the light of the first color is reflected back and emitted through the first transparent cover plate 31 again, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20, and the second color resistance layer 202 transmits the second color light. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is a mixture of the second color and other colors, and the background area BA is the second color. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is the first color, and the background area BA is the first color.

[0076] Figure 11 Another light path schematic diagram of the anti-fake display panel provided by the embodiment of the utility model is provided, and specifically Figure 9 The light path schematic diagram of one of the liquid crystal layer 30 located in the graphic area GA and the liquid crystal layer 30 located in the background area BA in the anti-fake display panel shown in the figure is in the transparent state, and the other is in the reflective state, as shown in the figure Figure 11As shown, for example, a voltage is applied to the liquid crystal layer 30 located in the graphic area GA to make it in the transparent state, and the liquid crystal layer 30 located in the background area BA remains in the reflective state. In a dark state environment, when the light source 40 is used to irradiate from the front of the anti-fake display panel (the light path diagram on the left side of the red dashed line), the light enters from the second transparent cover plate 32, and in the graphic area GA, the white light directly enters the liquid crystal layer 30, and the liquid crystal layer 30 in the transparent state transmits the white light, so the white light transmits through the liquid crystal layer 30 and is emitted from the first transparent cover plate 31. In the background area BA, only the second color light enters the liquid crystal layer 30 after the white light passes through the second color color resistance layer 202, and the liquid crystal layer 30 in the reflective state transmits the second color light. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is in a dark state, and the background area BA is in a dark state. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is in a bright state, and the background area BA is in a bright state of the second color.

[0077] When the light source 40 is used to irradiate from the back of the anti-fake display panel (the light path diagram on the right side of the red dashed line), the light enters from the first transparent cover plate 31, and in the graphic area GA, the liquid crystal layer 30 in the transparent state transmits the white light, and the color film substrate 20 transmits the white light. In the background area BA, when the white light enters the liquid crystal layer 30 in the reflective state, the light of the first color is reflected back and is emitted again through the first transparent cover plate 31, and the light of other colors is transmitted from the liquid crystal layer 30 to the color film substrate 20, and the second color color resistance layer 202 transmits the light of the second color. Therefore, the display effect observed on the side of the second transparent cover plate 32 is that the graphic area GA is in a bright state, and the background area BA is in a second color. The display effect observed on the side of the first transparent cover plate 31 is that the graphic area GA is in a dark state, and the background area BA is in a first color.

[0078] Of course, there are other optional embodiments, which can be different according to the color of the color resistance layer and the color of the liquid crystal layer 30. The embodiments are not described one by one, and all have the beneficial effects described in any of the above embodiments.

[0079] Figure 12 Another anti-fake display panel cross-sectional structure schematic diagram provided by the embodiment of the utility model, reference Figure 12 On the basis of the above-mentioned embodiments, optionally, at least one through hole K1 is arranged on the color resistance layer, and the through hole K1 penetrates the color resistance layer. Among them, the through hole K1 can be located on the color resistance layer of the graphic area GA, or located on the color resistance layer of the background area BA, or located on the color resistance layer of the graphic area GA and the background area BA at the same time. By arranging the through hole K1 on the color resistance layer, the color of the light incident to the liquid crystal layer 30 can be changed, so that the finally displayed color is changed, which can further increase the anti-fake characteristics and improve the anti-fake effect.

[0080] Optionally, the utility model embodiment further provides a kind of anti-fake label, and the anti-fake label includes the anti-fake display panel provided in any of the above embodiments, therefore, the anti-fake label provided in the present embodiment is also provided with the beneficial effects described in any of the above embodiments.

[0081] It should be understood that the steps can be reordered, added, or deleted using the various forms of flowcharts shown above. For example, the steps recited in the utility model can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions of the utility model can be achieved, which are not limited herein.

[0082] The above specific embodiments do not constitute a limitation on the scope of protection of the utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the utility model should be included within the scope of protection of the utility model.

Claims

1. An anti-counterfeiting display panel, characterized in that, The anti-fake display panel comprises a pattern area and a background area; The anti-fake display panel further comprises: An array substrate; A color film substrate, the color film substrate is provided with a color resist layer, the color resist layer is located in the pattern area and / or the background area, the color of the color resist layer in the pattern area is different from the color of the color resist layer in the background area; A liquid crystal layer, at least part of the liquid crystal molecules in the liquid crystal layer are in a reflective state.

2. The anti-fraud display panel of claim 1, wherein, The liquid crystal layer is a cholesteric phase liquid crystal layer.

3. The anti-fraud display panel of claim 1, wherein, The color film substrate comprises a first color color resist layer and a second color color resist layer, the first color color resist layer is located in the pattern area, and the second color color resist layer is located in the background area; The liquid crystal layer comprises a first color liquid crystal layer, the liquid crystal layers located in the pattern area and the background area are both in a reflective state; or, One of the liquid crystal layer located in the pattern area and the liquid crystal layer located in the background area is in a transparent state, and the other is in a reflective state.

4. The anti-fraud display panel of claim 1, wherein, The color film substrate comprises a first color color resist layer, the first color color resist layer is located in the pattern area; The liquid crystal layer comprises a second color liquid crystal layer, the liquid crystal layers located in the pattern area and the background area are both in a reflective state; or, One of the liquid crystal layer located in the pattern area and the liquid crystal layer located in the background area is in a reflective state, and the other is in a transparent state.

5. The anti-fraud display panel of claim 1, wherein, The color film substrate comprises a second color color resist layer, the second color color resist layer is located in the background area; The liquid crystal layer comprises a first color liquid crystal layer, the liquid crystal layers located in the pattern area and the background area are both in a reflective state; or, One of the liquid crystal layer located in the pattern area and the liquid crystal layer located in the background area is in a reflective state, and the other is in a transparent state.

6. The anti-fraud display panel according to any one of claims 3-5, characterized in that, The first color and the second color are one of red, green or blue, and the first color and the second color are different colors.

7. The anti-fraud display panel of claim 1, wherein, At least one through hole is provided on the color resist layer, the through hole penetrates the color resist layer.

8. The anti-fraud display panel of claim 1, wherein, The array substrate comprises a first substrate and a pixel electrode, the pixel electrode is located on the side of the first substrate close to the liquid crystal layer, the pixel electrodes corresponding to the pattern area and the background area are insulated from each other; The color film substrate further comprises a second substrate and a common electrode, the common electrode is located on the side of the color resist layer away from the second substrate; The anti-fake display panel further comprises a first transparent cover plate and a second transparent cover plate, the first transparent cover plate is located on the side of the array substrate away from the liquid crystal layer, and the second transparent cover plate is located on the side of the color film substrate away from the liquid crystal layer.

9. The anti-fraud display panel of claim 1, wherein, A black matrix is provided between adjacent color resist layers of different colors.

10. A security tag, characterized in that The anti-fake display panel comprises the anti-fake display panel according to any one of claims 1-9.

Images