Display module and display device
By setting a multiplexed transparent conductive layer anti-peeping layer between the color film layer of the display module and the first polarizer, the problems of poor anti-peeping effect and insufficient brightness of the traditional display module are solved, and higher display brightness is achieved and lower backlight costs.
Patent Information
- Application Number
- CN202411817603.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-02-11
AI Technical Summary
When the traditional display module realizes the anti-peeping function, the anti-peeping film is used in combination with the diaphragm of the light source component, resulting in poor anti-peeping effect and insufficient overall optical transmittance, affecting the display brightness.
By providing a anti-sight layer between the color film layer and the first polarizer, and multiplexing the transparent conductive layer with the light-transmitting part, the anti-sight function is realized while reducing light absorption and improving the brightness of the display panel.
Without introducing an additional anti-peeping film, thinning of anti-peeping function is achieved, reducing the transmittance loss of reflected light, improving display brightness, and reducing backlight cost or power consumption.
Smart Images
Figure CN119414630A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of display technology, and in particular to a display module and a display device. Background Art
[0002] With the development of the display industry, display technology is applied to various fields of life, and display devices such as mobile phones and computers have more and more extensive applications. Usually, display devices have a large viewing angle, and users at different viewing angles can all know the information displayed. However, in some scenarios, users hope that the information displayed by the display device cannot be known by other users around them, that is, they hope that the display device has an anti-peeping function. Traditional display modules often combine anti-peeping films with films of light source components, which have poor anti-peeping effects and insufficient overall optical transmittance. Summary of the invention
[0003] In order to solve the above technical problems, the present disclosure provides a display module and a display device for realizing an anti-peeping function and improving display brightness.
[0004] In a first aspect, the present disclosure provides a display module, comprising: a backlight module, a display panel, a first polarizer, and a second polarizer, wherein the display panel is located in a light emitting direction of the backlight module, the first polarizer is located on a side of the display panel away from the backlight module, and the second polarizer is located on a side of the display panel facing the backlight module;
[0005] The display panel comprises a color filter substrate, an array substrate, and a liquid crystal layer. Along a first direction, the liquid crystal layer is located between the color filter substrate and the array substrate. The color filter substrate comprises a substrate and a color filter layer. The color filter layer is located on a side of the substrate facing the liquid crystal layer. The first direction is perpendicular to the plane where the display panel is located.
[0006] The color film substrate comprises a transparent conductive layer, and the transparent conductive layer is located on a side of the substrate facing the first polarizer;
[0007] The anti-peeping layer includes a light-transmitting portion and a light-shielding portion, wherein the light-transmitting portion and the light-shielding portion are arranged at intervals along a second direction, and the second direction is parallel to the plane where the display panel is located; the light-transmitting portion reuses the transparent conductive layer.
[0008] In a second aspect, based on the same inventive concept, the present disclosure provides a display device, comprising the display module as described in the first aspect.
[0009] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:
[0010] By setting the anti-peep layer between the color filter layer and the first polarizer and reusing the transparent conductive layer in the light-transmitting part, the anti-peep function can be achieved without introducing an anti-peep film, which is beneficial to the thinning of the display module, and the anti-peep layer also has an electrostatic shielding effect; by moving the anti-peep layer up between the color filter layer and the first polarizer, light absorption can be reduced, the brightness of the display panel can be improved, and the backlight cost or power consumption can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0013] Figure 1 Shown is a display module in the prior art;
[0014] Figure 2 Shown is a schematic diagram of a film layer of a display module provided by an embodiment of the present disclosure;
[0015] Figure 3 Shown Figure 2 A schematic diagram of a film layer structure of a display panel;
[0016] Figure 4 FIG. 1 is a schematic diagram of a film layer structure of another display module provided by an embodiment of the present disclosure;
[0017] Figure 5 FIG. 1 is a schematic diagram of a film layer structure of another display panel provided in an embodiment of the present disclosure;
[0018] Figure 6 FIG. 1 is a schematic diagram of a film layer structure of another display panel provided in an embodiment of the present disclosure;
[0019] Figure 7 FIG. 1 is a schematic diagram of a film layer structure of another display panel provided in an embodiment of the present disclosure;
[0020] Figure 8 Shown is a schematic diagram of an anti-peeping layer structure provided by an embodiment of the present disclosure;
[0021] Fig. 9 Shown is a schematic diagram of a display device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION
[0022] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0024] Figure 1 The display module 100' in the prior art is shown. The display module 100' includes a backlight module 10' and a display panel 20'. The display panel 20' is located on the light-emitting surface of the backlight module 10'. The side of the display panel 20' facing the backlight module 10' includes a lower polarizer 30'. The side of the display panel 20' away from the backlight module 10' includes an upper polarizer 40'. Along the first direction D1', the privacy film 00' is arranged between the backlight module 10' and the lower polarizer 30' in a fitted form. The privacy film 00' is usually made of polycarbonate material. Haze is one of the inherent characteristics of the privacy film 00'. Haze is a physical quantity that characterizes the degree of light scattering inside or on the surface of a transparent or translucent material. It reflects the scattering effect of the microstructure inside or on the surface of the material on light. The larger the haze, the stronger the scattered light and the lower the transparency. Appropriate haze can prevent the generation of moiré to a certain extent, but when the haze is too high, it will affect the clarity of the screen to a certain extent, which may cause blurred display. In addition, the common privacy film 00' usually uses alternately arranged light absorbing units and light transmitting units to achieve the control of the viewing angle. This structure makes the transmittance of the privacy film 00' about 60-80%. The privacy film 00' is located between the backlight module 10' and the lower polarizer 30'. The backlight light will have a transmittance loss when passing through the privacy film 00', and there will also be a transmittance loss when further entering the lower polarizer 30'. The lower polarizer 30' allows a part of the light emitted by the backlight module 10' to be transmitted into the display panel 20', and a part of it is re-reflected back to the privacy film 00'. The reflected light is lost again after passing through the privacy film 00', and then emitted again to the lower polarizer 30', a part of it is transmitted, and a part of it is reflected, and so on... The reflected light between the backlight module 10' and the lower polarizer 30' has a doubled transmittance loss due to passing through the privacy film 00' multiple times, which ultimately leads to a reduction in the overall display brightness.
[0025] In response to the above problems, Figure 2 FIG. 1 is a schematic diagram of a film layer of a display module provided by an embodiment of the present disclosure, please refer to Figure 2The present disclosure provides a display module 100, including: a backlight module 10, a display panel 20, a first polarizer 40, and a second polarizer 30. The display panel 20 is located in the light emitting direction of the backlight module 10, the first polarizer 40 is located on the side of the display panel 20 away from the backlight module 10, and the second polarizer 30 is located on the side of the display panel 20 facing the backlight module 10.
[0026] The display panel 20 includes a color filter substrate 23, an array substrate 21, and a liquid crystal layer 22. Along the first direction D1, the liquid crystal layer 22 is located between the color filter substrate 23 and the array substrate 21; the color filter substrate 23 includes a substrate 24 and a color filter layer 25, and the color filter layer 25 is located on the side of the substrate 24 facing the liquid crystal layer 22; the first direction D1 is perpendicular to the plane where the display panel 20 is located. Optionally, the color filter layer 25 includes a light blocking portion 252 and an opening portion 251, and the opening portion 251 is filled with color resistance. Optionally, the color resistance includes at least red color resistance, green color resistance, and blue color resistance. The light emitted by the backlight module 10 passes through the color resistances of different colors and is converted into light of different colors and emitted to the light emitting surface of the display panel 20 for image display.
[0027] The color filter substrate 23 includes a transparent conductive layer 26 . The transparent conductive layer 26 is located on a side of the substrate 24 facing the first polarizer 40 .
[0028] It should be noted that in order to reflect the relative position relationship between the film layers and the optical path diagram, the shape and thickness of the film layer structure in the drawings of the embodiments of the present disclosure are for illustration only and do not represent the thickness and shape of the film layer in the actual production process. The specific thickness shall be subject to the actual process.
[0029] Figure 3 Shown Figure 2 A schematic diagram of a film structure of a display panel, please refer to Figure 2 and Figure 3 In an optional embodiment provided in the present disclosure, the display panel 20 includes an anti-peeping layer 00, the anti-peeping layer 00 includes a light-transmitting portion 29 and a light-shielding portion 27, and the light-transmitting portion 29 and the light-shielding portion 27 are arranged at intervals along a second direction D2, and the second direction D2 is parallel to the plane where the display panel 20 is located; the light-transmitting portion 29 reuses the transparent conductive layer 26.
[0030] Specifically, the display module 100 includes a backlight module 10 and a display panel 20. The display panel 20 is located on the light emitting side of the backlight module 10. A second polarizer 30 is also included between the backlight module 10 and the display panel 20. The side of the display panel 20 away from the backlight module 10 also includes a first polarizer 40. That is, along the direction from the backlight module 10 to the display panel 20, the display panel 20 is located between the first polarizer 40 and the second polarizer 30.
[0031] Along the first direction D1, the display panel 20 includes an array substrate 21, a liquid crystal layer 22, and a color filter substrate 23, which are sequentially arranged, wherein the color filter substrate 23 includes a substrate 24 and a color filter layer 25, and the color filter layer 25 faces the liquid crystal layer 22. The color filter substrate 23 also includes a transparent conductive layer 26, and the transparent conductive layer 26 is located on the side of the substrate 24 facing away from the liquid crystal layer 22, that is, in the first direction D1, the color filter substrate 23 includes the color filter layer 25, the substrate 24, and the transparent conductive layer 26 in sequence, wherein the color filter layer 25 is located on the side of the substrate 24 facing the liquid crystal layer 22, and the transparent conductive layer 26 is located on the side of the substrate 24 facing away from the liquid crystal layer 22.
[0032] Figure 4 FIG. 1 is a schematic diagram of a film structure of another display module provided by an embodiment of the present disclosure. Figure 2 and Figure 4 In an optional embodiment provided by the present disclosure, the display module 100 further includes an anti-peeping layer 00, which includes a light shielding portion 27 and a light-transmitting portion 29. The light shielding portion 27 and the light-transmitting portion 29 are sequentially arranged in a direction parallel to the plane where the display panel 20 is located. The light-transmitting portion 29 reuses the transparent conductive layer 26 on the color film substrate 23, which can achieve an anti-peeping effect, reduce the use of anti-peeping films, reduce the thickness of the display module 100, and facilitate the thinning of the display panel 20. Please refer to Figure 2 In the first direction D1, the display module 100 includes a backlight module 10, a second polarizer 30, an array substrate 21, a liquid crystal layer 22, a color film substrate 23, an anti-peeping layer 00, and a first polarizer 40 arranged along the first direction D1. Figure 4 The display module 100 includes a backlight module 10, a second polarizer 30, an array substrate 21, a liquid crystal layer 22, a color filter layer 25, a substrate 24, an anti-peeping layer 00 (the light-transmitting portion 29 reuses the transparent conductive layer 26), and a first polarizer 40. The light-transmitting portion 29 of the anti-peeping layer 00 reuses the transparent conductive layer 26 of the color filter substrate 23. Figure 1 and Figure 2When the privacy layer 00 is placed between the upper polarizer (equivalent to the first polarizer 40 of the present disclosure) and the color filter layer 25, compared with the prior art in which the privacy film is attached between the array substrate 21 and the lower polarizer (equivalent to the second polarizer 30 of the present disclosure), the privacy layer 00 is located on the side of the second polarizer 30 away from the backlight module 10. The second polarizer 30 can transmit part of the light emitted by the backlight module 10 to the display panel 20, and reflect the other part back to the backlight module 10. Since the privacy layer 00 in this embodiment is not arranged on the second polarizer 30 and the backlight module 10, the light reflected from the second polarizer 30 to the backlight module 10 does not need to pass through the anti-peep film again, which can reduce the loss of the light reflected by the lower polarizer when passing through the anti-peep film when it is reused, and the light emitted from the display module 10 to the second polarizer 30 does not need to pass through the anti-peep film again, which can reduce the number of times the reflected light passes through the anti-peep layer 00 and reduce the absorption of light. The brightness loss caused by the introduction of the anti-peep film can be reduced to a great extent. The embodiment of the present disclosure can improve the light transmittance, thereby improving the brightness and reducing the backlight cost or power consumption.
[0033] It should be noted that polarizers include conventional polarizers and reflective polarizers. Compared with conventional polarizers, reflective polarizers reflect more light. Figure 1 As mentioned above, when a conventional privacy film 00' is set between the second polarizer 30' (reflective polarizer) and the backlight module 10', since the light reflected by the second polarizer 30' needs to pass through the privacy film 00' and be reflected back to the backlight module 10', when the second polarizer 30' adopts a reflective polarizer, compared with the conventional polarizer, the reflective polarizer reflects more light to the backlight module 10', so that more reflected light will pass through the privacy film 00' and produce transmittance loss. When the reflected light in the previous stage passes through the privacy film 00' again from the display module 10' to the second polarizer 30', there will be transmittance loss... After multiple reflections and transmittance loss, the brightness of the reflected light will be weakened, thereby reducing the brightness of the display panel 100'.
[0034] In this way, by setting the anti-peeping layer 00 between the color filter layer 25 and the first polarizer 40, and the light-transmitting portion 29 in the anti-peeping layer 00 reuses the transparent conductive layer 26 on the color filter substrate 23, the anti-peeping layer 00 can be located on the side of the second polarizer 30 away from the backlight module 10 while realizing the anti-peeping function. The light reflected from the second polarizer 30 to the backlight module 10 does not need to pass through the anti-peeping layer 00, which can reduce the transmittance loss of the reflected light. In particular, when the second polarizer 30 adopts a reflective polarizer, since the transmittance loss of the reflected light is smaller, the brightness enhancement effect under this film layer structure is better, the backlight cost or power consumption is reduced, and there is no need to introduce an anti-peeping film separately, which is conducive to the thinning of the display module 100, and the anti-peeping layer 00 also has an electrostatic shielding effect.
[0035] Please combine Figures 2 to 4 The light shielding portion 27 includes at least one of a metal material or an opaque organic material. Optionally, the metal material may be a non-ferrous metal or other metal material that can be used for light shielding to block light from passing through. Optionally, the opaque organic material may be a black matrix.
[0036] In an optional embodiment provided by the present disclosure, the anti-peeping layer 00 includes a light shielding portion 27 and a light-transmitting portion 29, the light-transmitting portion 29 and the light shielding portion 27 are sequentially arranged at intervals along the second direction D2, the light-transmitting portion 29 reuses the transparent conductive layer 26 of the color filter substrate 23, and the material of the light shielding portion 27 is a metal material. In another optional embodiment provided by the present disclosure, the anti-peeping layer 00 includes a light shielding portion 27 and a light-transmitting portion 29, the light-transmitting portion 29 and the light shielding portion 27 are sequentially arranged at intervals along the second direction D2, the light-transmitting portion 29 reuses the transparent conductive layer 26 of the color filter substrate 23, and the material of the light shielding portion 27 is a black matrix. In another optional embodiment provided by the present disclosure, the anti-peeping layer 00 includes a light shielding portion 27 and a light-transmitting portion 29, the light-transmitting portion 29 and the light shielding portion 27 are sequentially arranged at intervals along the second direction D2, the light-transmitting portion 29 reuses the transparent conductive layer 26 of the color filter substrate 23, and the material of the light shielding portion 27 includes a metal material and a black matrix. The light-transmitting portion 29 of the anti-peeping layer 00 reuses the transparent conductive layer 26 of the color film substrate 23, and the transparent conductive layer 26 can be used for light to pass through. The light-shielding portion 27 includes a metal material or a black matrix, and the light-shielding portion 27 can be used to block the light from passing through. The light-transmitting portion 29 and the light-shielding portion 27 are arranged in sequence in the second direction D2 to form a structure similar to a grating, which can achieve precise control of the viewing angle of the display panel 20. When the display panel 20 is viewed from the front, the light can pass through normally. When the display panel 20 is viewed from an inclined angle or from the side, the light is blocked or refracted by the anti-peeping layer 00 with a grating structure to achieve an anti-peeping effect.
[0037] Thus, by using at least one of metal materials or black matrix materials in the light shielding portion 27 of the privacy protection layer 00, the light-transmitting portion 29 and the light shielding portion 27 arranged along the second direction D2 can present a privacy protection structure similar to a grating, thereby achieving a privacy protection effect.
[0038] Please combine Figure 3 to Figure 4 The anti-peep layer 00 also includes a flat layer 28, which is located on the side of the light-transmitting portion 29 facing the first polarizer 40, and the flat layer 28 covers the light-transmitting portion 29 and the light-shielding portion 27; the material of the flat layer 28 is light-transmitting. Optionally, the flat layer 28 can be the same as or different from the material of the light-transmitting portion 29. For example, the flat layer 28 can be made of an organic light-transmitting material, such as an OC (overcoating) layer.
[0039] Specifically, in an optional embodiment provided by the present disclosure, the anti-peeping layer 00 includes a light-transmitting portion 29 and a light-shielding portion 27. The light-transmitting portion 29 reuses the transparent conductive layer 26 on the color film substrate 23. The light-shielding portion 27 is deposited on the side of the transparent conductive layer 26 facing away from the substrate 24. The material of the light-shielding portion 27 includes at least one of a metal material or a black matrix. Along the first direction D1, the light-shielding portion 27 is located on the side of the transparent conductive layer 26 facing the first polarizer 40, and the light-shielding portion 27 at least partially protrudes from the transparent conductive layer 26. The anti-peeping layer 00 also includes a flat layer 28, which is used to flatten the light-transmitting portion 29 and the light-shielding portion 27. Along the first direction D1, the flat layer 28 is located on the side of the transparent conductive layer 26 facing the first polarizer 40. Along the second direction D2, the flat layer 28 covers the light-transmitting portion 29 and the light-shielding portion 27. The flat layer 28 covering the light-transmitting portion 29 is also light-transmitting, and can allow light emitted from the light-transmitting portion 29 to pass through; since the light-shielding portion 27 at least partially protrudes from the light-transmitting portion 29 in the first direction D1, the flat layer 28 covers the light-shielding portion 27 and the light-transmitting portion 29 in the second direction D2, and can flatten the anti-peeping layer 00, which is beneficial to the pasting of the first polarizer 40 and the flatness of the display panel 20.
[0040] Thus, by providing the anti-peep layer 00 including the flat layer 28 , the material of the flat layer 28 is light-transmissive, which can facilitate the passage of light from the light-transmitting portion 29 while achieving the flattening of the anti-peep layer 00 , facilitating the attachment of the first polarizer 40 , and facilitating the flattening of the display panel 20 .
[0041] Figure 5 FIG. 1 is a schematic diagram of a film layer structure of another display panel provided in an embodiment of the present disclosure. Please refer to FIG. Figure 5 In an optional embodiment provided in the present disclosure, the surface of the transparent conductive layer 26 facing away from the substrate 24 includes a groove 01 , and the light shielding portion 27 is at least partially located in the groove 01 .
[0042] Specifically, the anti-peeping layer 00 includes a light-transmitting portion 29 and a light-shielding portion 27, which are arranged along the second direction D2. The light-transmitting portion 29 reuses the transparent conductive layer 26 of the color filter substrate 23, and the side of the transparent conductive layer 26 facing the first polarizer 40 is etched to form a groove 01, and the light-shielding portion 27 is at least partially located in the groove 01. Along the first direction D1, the groove 01 does not penetrate the transparent conductive layer 26. Since the groove 01 does not penetrate the transparent conductive layer 26, the portion of the transparent conductive layer 26 close to the substrate 24 still covers the substrate 24 in its entirety, and the transparent conductive layer 26 still has an electrostatic shielding effect. The material of the light-shielding portion 27 located in the groove 01 of the transparent conductive layer 26 can be a metal material, or a black matrix, or a metal material and a black matrix. The transparent conductive layer 26 can be etched at intervals along the second direction D2 to form a plurality of grooves 01 arranged in sequence. One or more metal materials or black matrices are deposited in the grooves 01 to form a shading portion 27. The light-transmitting portion 29 reuses the transparent conductive layer 26 connected to the light-shielding portion 27 in the second direction D2. The light-transmitting portion 29 and the light-shielding portion 27 are arranged along the second direction D2 to form an anti-peeping layer 00 with a grating structure. The anti-peeping layer 00 is located between the color film layer 25 and the first polarizer 40, and can achieve an anti-peeping effect.
[0043] In this way, by setting a groove 01 on the side of the transparent conductive layer 26 away from the substrate 24, the groove 01 does not penetrate the transparent conductive layer 26. "Not penetrate" means that along the first direction D1, the depth of the groove 01 is less than the thickness of the transparent conductive layer 26. The light shielding portion 27 is at least partially located in the groove 01, and the light-transmitting portion 29 reuses part of the transparent conductive layer 26. The anti-peeping layer 00 formed in this way has both anti-peeping and electrostatic shielding functions; in addition, the light shielding portion 27 is deposited in the groove 01 of the transparent conductive layer 26, so that the light shielding portion 27 and the surface of the light-transmitting portion 26 on the side away from the substrate 24 can be flush, and flattening can be achieved without setting a flat layer 28, which is beneficial to the attachment of the first polarizer 40, while reducing the film layer setting, which is beneficial to the thinning of the display module 100.
[0044] Figure 6 FIG. 1 is a schematic diagram of a film structure of another display panel provided in an embodiment of the present disclosure. Please refer to FIG. Figure 6 In an optional embodiment provided in the present disclosure, the transparent conductive layer 26 includes a groove 01, and the groove 01 penetrates the transparent conductive layer 26. "Penetrates" means that along the first direction D1, the depth of the groove 01 is equal to the thickness of the transparent conductive layer 26, and the light shielding portion 27 is at least partially located in the groove 01.
[0045] Specifically, the display module 100 includes an anti-peeping layer 00, and the anti-peeping layer 00 includes a light-transmitting portion 29 and a light-shielding portion 27, and the light-transmitting portion 29 and the light-shielding portion 27 are arranged along the second direction D2. The color film substrate 23 includes a transparent conductive layer 26, and a groove 01 is formed by etching the side of the transparent conductive layer 26 facing the first polarizer 40, and the light-shielding portion 27 is at least partially located in the groove 01. Along the second direction D2, the groove 01 penetrates the transparent conductive layer 26, and along the first direction D1, the depth of the light-shielding portion 27 is equal to the thickness of the transparent conductive layer 26, and the light-transmitting portion 29 reuses the unetched portion of the transparent conductive layer 26.
[0046] The shading portion 27 includes a metal material or a conductive non-metal material. For example, the conductive non-metal material can be a conductive carbon material such as graphene, carbon nanotubes, carbon fiber, etc., or a metal oxide material such as copper oxide, zinc oxide, etc., or a processed colored or light-shielding organic conductive polymer material, or a polymer-based composite material formed by uniformly dispersing conductive fillers in a polymer matrix. Optionally, the conductive non-metal material can change color by color adjustment and other methods, and is suitable for shading. The shading portion 27 is at least partially located in the groove 01. Since the groove 01 passes through the transparent conductive layer 26, the unetched portion of the transparent conductive layer 26 is arranged in sequence along the second direction D2. That is, the unetched portion of the transparent conductive layer 26 forms isolated light-transmitting portions 29 that are arranged in sequence along the second direction D2. A metal material is deposited in the groove 01 that penetrates the transparent conductive layer 26 to form a light-shielding portion 27. Since the light-shielding portion 27 including the metal material has a conductive function, the light-transmitting portion 29 of the reused transparent conductive layer 26 also has a conductive function. The light-transmitting portion 29 and the light-shielding portion 27 are arranged in sequence in the second direction D2. Therefore, the anti-peeping layer 00 formed by the light-transmitting portion 29 with a conductive function and the light-shielding portion 27 still has an electrostatic shielding effect, and as mentioned above, the anti-peeping layer 00 with a grating structure has an anti-peeping effect.
[0047] In this way, by setting a groove 01 on the side of the transparent conductive layer 26 away from the substrate 24, the groove 01 penetrates the transparent conductive layer 26, and a metal material is deposited in the groove 01 to form a shading portion 27, and the transparent portion 29 reuses the portion of the transparent conductive layer 26 where the groove 01 is not etched. The anti-peeping layer 00 formed by the shading portion 27 with a conductive function and the transparent portion 29 has both an anti-peeping effect and an electrostatic shielding effect.
[0048] Figure 7 FIG. 1 is a schematic diagram of a film structure of another display panel provided in an embodiment of the present disclosure. Please refer to FIG. Figure 7In an optional embodiment provided in the present disclosure, the anti-peeping layer 00 includes a shading portion 27 and a light-transmitting portion 29 arranged along the second direction D2, a groove 01 is etched on the transparent conductive layer 26 of the color film substrate 23, and the groove 01 penetrates the transparent conductive layer 26 along the first direction D1. The shading portion 27 is at least partially located in the groove 01, and the shading portion 27 includes a first sub-shading portion 271 and a second sub-shading portion 272. Along the first direction D1, the first sub-shading portion 271 is located on a side of the second sub-shading portion 272 away from the substrate 24, the first sub-shading portion 271 includes a black matrix, and the second sub-shading portion 272 includes a metal material.
[0049] Specifically, in the first direction D1, the first sub-light-shielding portion 271 covers the second sub-light-shielding portion 272, the second sub-light-shielding portion 272 includes a metal material and has a conductive function, the unetched portions of the transparent conductive layer 26 are arranged in sequence along the second direction D2 to form isolated light-transmitting portions 29, and the second sub-light-shielding portion 272 with a conductive function connects the isolated light-transmitting portions 29 along the second direction D2. Due to the conductive function of the second sub-light-shielding portion 272 and the transparent conductive layer 26, the connected second sub-light-shielding portion 272 and the light-transmitting portion 29 have an electrostatic shielding function. Along the first direction D1, the first sub-light-shielding portion 271 is located on the side of the second sub-light-shielding portion 272 away from the substrate 24, and the first sub-light-shielding portion 271 includes a black matrix, that is, along the first direction D1, the first sub-light-shielding portion 271 including the black matrix covers the second sub-light-shielding portion 272 including the metal material. The black matrix has a light-shielding effect. The black matrix covering the metal material can reduce the reflection on the surface of the metal material, reduce the glare of the anti-peep layer 00, and improve the display effect.
[0050] In this way, by setting a shading portion 27 including a metal material and a black matrix in the first direction D1, the electrostatic shielding effect of the transparent conductive layer 26 can be achieved, and the black matrix can be used to cover the metal material to reduce the reflection of light on the surface of the metal material, thereby reducing the glare of the anti-peep layer 00 caused by using a metal material as the shading portion 27, thereby improving the display effect.
[0051] Figure 8 FIG. 1 is a schematic diagram of a structure of an anti-peeping layer provided in an embodiment of the present disclosure, please refer to Figure 8 In an optional embodiment provided in the present disclosure, along the first direction D1, a thickness h1 of the first sub-light-shielding portion 271 is greater than a thickness h2 of the second sub-light-shielding portion 272 .
[0052] Specifically, the first sub-light shielding portion 271 includes a metal material, and the second sub-light shielding portion 272 includes a black matrix. In the direction perpendicular to the plane where the display panel 20 is located, the thickness h1 of the first sub-light shielding portion 271 is greater than the thickness h2 of the second sub-light shielding portion 272, that is, the thickness of the black matrix is greater than the thickness of the metal material. Since the black matrix is cheaper than the metal material and the film forming process is simpler, when the thickness of the black matrix is set to be greater than the thickness of the metal material, the cost of forming the light shielding portion 27 can be reduced while achieving both the electrostatic shielding effect and the anti-peeping effect, thereby reducing the cost of the anti-peeping layer 00. In this way, the thickness h1 of the first sub-light shielding portion 271 is set to be greater than the thickness h2 of the second sub-light shielding portion 272, so that the anti-peeping layer 00 has both the electrostatic shielding effect and the anti-peeping effect, while reducing the material and process costs of the anti-peeping layer 00.
[0053] Please continue to refer to Figure 8 In an optional embodiment provided in the present disclosure, the height of the light shielding portion 27 in the first direction D1 is H, 25μm≤H≤150μm; along the second direction D2, the width of the light shielding portion 27 is L, 30μm≤L≤50μm.
[0054] Specifically, the height H of the light shielding portion 27 in the first direction D1 can be 25 μm≤H≤50 μm, 35 μm≤H≤60 μm, 45 μm≤H≤70 μm, 55 μm≤H≤80 μm, 65 μm≤H≤90 μm, 75 μm≤H≤100 μm, 85 μm≤H≤110 μm, 95 μm≤H≤120 μm, 105 μm≤H≤130 μm, 115 μm≤H≤150 μm, etc., which are not listed here one by one. It is sufficient that the height H of the light-shielding portion 27 in the first direction D1 is within the range of greater than or equal to 25 μm and less than or equal to 150 μm. When the height H of the light-shielding portion 27 in the first direction D1 is less than 25 μm, the height of the light-shielding portion 27 in the first direction D1 is too thin and cannot play a light-shielding effect; when the height H of the light-shielding portion 27 in the first direction D1 is greater than 150 μm, the height of the light-shielding portion 27 in the first direction D1 is too high, the anti-peeping viewing angle is too narrow, and it is easy to increase the process and cost.
[0055] The width L of the shading portion 27 in the second direction D2 can be 30μm≤L≤35μm, 35μm≤L≤40μm, 40μm≤L≤45μm, 45μm≤L≤50μm... and so on, which are not listed here one by one. It is only necessary to satisfy that the width L of the shading portion 27 in the second direction D2 is in the range of greater than or equal to 30μm and less than or equal to 50μm. When the width L of the shading portion 27 in the second direction D2 is less than 30μm, the width of the shading portion 27 in the second direction D2 is too narrow, and grating diffraction is likely to occur, thereby affecting the display effect; when the width L of the shading portion 27 in the second direction D2 is greater than 50μm, the width of the shading portion 27 in the second direction D2 is too wide, and it is likely to block the light in the color filter layer 25 from passing through, thereby affecting the display effect.
[0056] In this way, by setting the height H of the shading portion 27 within the range of 25μm≤H≤150μm, the influence of the height H on the shading effect can be reduced due to the height H being too low, and the narrow anti-peeping viewing angle caused by the height H being too high can be reduced; and by setting the width L of the shading portion 27 within the range of 30μm≤L≤50μm, the grating diffraction caused by the width L being too narrow can be reduced, and the blocking of the outgoing light of the color film layer 25 caused by the width L being too wide can be reduced, so as to achieve the anti-peeping effect at a suitable viewing angle without increasing the cost.
[0057] Please refer to Figure 7 In an optional embodiment provided in the present disclosure, the color filter layer 25 includes a light blocking portion 252 and an opening portion 251 , a color resist is disposed in the opening portion 251 , and along the first direction D1 , the light blocking portion 252 at least partially overlaps with the light shielding portion 27 .
[0058] Specifically, the color filter layer 25 includes a light blocking portion 252 and an opening portion 251. The opening portion 251 is provided with a color resist and filled with a color resist. The light emitted by the backlight module 10 is converted into light of different colors by the color resists of different colors and then emitted to the light emitting surface of the display panel 20. The light blocking portion 252 is used to reduce the crosstalk of light of different colors emitted by adjacent color resists. In the direction perpendicular to the plane where the display panel 20 is located, the light blocking portion 252 in the color film layer 25 at least partially overlaps with the light shielding portion 27 in the anti-peep layer 00, which is conducive to the light emitted from the backlight module 10 passing through the light-transmitting portion 29 and the opening portion 251, thereby improving the display effect at the front view angle; in addition, in the first direction D1, the light blocking portion 252 in the color film layer 25 is at least partially misaligned with the light shielding portion 27 in the anti-peep layer 00, which is conducive to the light emitted from the backlight module 10 passing through the opening portion 251 at the side view angle and then being blocked by the light shielding portion 27, thereby achieving the anti-peep effect. In this way, by at least partially overlapping the light blocking portion 252 with the light shielding portion 27 in the first direction D1, it is conducive to the light emission at the front view angle, thereby improving the display effect, and blocking the emitted light at the side view angle, thereby achieving the anti-peep effect.
[0059] Please combine Figures 2 to 8 In an optional embodiment provided by the present disclosure, the light-transmitting portion 29 is made of at least one material selected from the group consisting of indium tin oxide, indium zinc oxide, nano-ultrafine particle powder, and 3,4-ethylenedioxythiophene monomer. That is, the transparent conductive layer 26 on the color filter substrate 23 is made of at least one material selected from the group consisting of indium tin oxide, indium zinc oxide, nano-ultrafine particle powder, and 3,4-ethylenedioxythiophene monomer. Indium tin oxide, indium zinc oxide, nano-ultrafine particle powder, and 3,4-ethylenedioxythiophene monomer all have the characteristics of high light transmittance and low resistivity. The film layer formed by these materials can allow light to pass through while having a conductive function. Optionally, the light-transmitting portion 29 is made of indium tin oxide material, or the light-transmitting portion 29 is made of indium zinc oxide material, or the light-transmitting portion 29 is made of 3,4-ethylenedioxythiophene monomer, or the light-transmitting portion 29 is made of indium tin oxide and indium zinc oxide material, or the light-transmitting portion 29 is made of indium zinc oxide and 3,4-ethylenedioxythiophene monomer material, or the light-transmitting portion 29 is made of 3,4-ethylenedioxythiophene monomer and indium tin oxide material, or the light-transmitting portion 29 is made of indium tin oxide, indium zinc oxide, and 3,4-ethylenedioxythiophene monomer material. In this way, by using at least one material of indium tin oxide, indium zinc oxide, nano-ultrafine particle powder, and 3,4-ethylenedioxythiophene monomer to make the light-transmitting portion 29, the light-transmitting portion 29 can have both light-transmitting and conductive functions, and thus the anti-peeping layer 00 including the light-transmitting portion 29 can have both anti-peeping and electrostatic shielding functions.
[0060] Fig. 9 FIG. 1 is a schematic diagram of a display device provided by an embodiment of the present disclosure, please refer to FIG. Fig. 9 The present disclosure provides a display device 200, comprising the display module 100 as described above. The display device 200 provided in the embodiment of the present disclosure may be any electronic device with a display function, such as a touch screen, a mobile phone, a tablet computer, a laptop computer, an e-book, or a television. The display device 200 provided in the embodiment of the present disclosure has the beneficial effects of the display module 100 provided in the embodiment of the present disclosure. For details, please refer to the specific description of the display module 100 in the above embodiments, which will not be repeated in this embodiment.
[0061] Understandably, Fig. 9 Only a rounded rectangular structure is used as an example to illustrate one shape of the display device 200. In some other embodiments of the present disclosure, the display device 200 may also be circular, elliptical or any other feasible shape, and the present disclosure does not specifically limit this.
[0062] In summary, the present disclosure provides a display module and a display device, including: a backlight module, a display panel, a first polarizer, and a second polarizer. The display panel is located in the light emitting direction of the backlight module, and the display panel is located between the first polarizer and the second polarizer. The display panel includes an array substrate, a liquid crystal layer, and a color film substrate arranged in sequence along a first direction. The color film substrate includes a color film layer, a substrate, and a transparent conductive layer arranged in sequence along the first direction. The display module also includes an anti-peeping layer, and the anti-peeping layer includes a light-transmitting portion and a light-shielding portion. Along the second direction, the light-transmitting portion and the light-shielding portion are arranged at intervals, and the light-transmitting portion reuses the transparent conductive layer. By arranging the anti-peeping layer between the color film layer and the first polarizer, and the light-transmitting portion reuses the transparent conductive layer, the number of times the reflected light passes through the anti-peeping layer can be reduced while realizing the anti-peeping function, thereby improving the brightness of the display panel, reducing the backlight cost or power consumption, and not introducing an additional anti-peeping film, which is conducive to the thinning of the display module, and the anti-peeping layer also has an electrostatic shielding effect. The light-shielding portion of the anti-peeping layer is made of metal material or at least one material in the black matrix, so that the light-transmitting portion and the light-shielding portion arranged along the second direction can present an anti-peeping structure similar to a grating, thereby achieving an anti-peeping effect. By providing an anti-peeping layer including a flat layer, the material of the flat layer is the same as that of the light-transmitting portion, while facilitating the light of the light-transmitting portion to pass through, the anti-peeping layer can be flattened, which is beneficial to the flattening of the display panel. By providing a groove on the side of the transparent conductive layer away from the substrate, the groove does not penetrate the transparent conductive layer, and the light-shielding portion is at least partially located in the groove, the anti-peeping layer thus formed has both an anti-peeping effect and an electrostatic shielding effect. By providing a groove on the side of the transparent conductive layer away from the substrate, the groove penetrates the transparent conductive layer, and a metal material is deposited in the groove to form a light-shielding portion, the light-transmitting portion reuses the portion of the transparent conductive layer where the groove is not etched, and the anti-peeping layer formed by the light-shielding portion having a conductive function and the light-transmitting portion has both an anti-peeping effect and an electrostatic shielding effect. By setting a light-shielding portion including a metal material and a black matrix in the first direction, the black matrix can be used to cover the metal material to reduce the reflection of light on the surface of the metal material while retaining the electrostatic shielding effect of the transparent conductive layer, thereby reducing the glare caused by the use of the metal material as the light-shielding portion of the anti-peeping layer, thereby improving the display effect. The thickness of the first sub-light-shielding portion is set to be greater than the thickness of the second sub-light-shielding portion, so that the anti-peeping layer has both electrostatic shielding and anti-peeping effects, while reducing the material and process costs of the anti-peeping layer. By using at least one material selected from indium tin oxide, indium zinc oxide, nano-ultrafine particle powder, and 3,4-ethylenedioxythiophene monomer to make the light-transmitting portion, the light-transmitting portion can have both light-transmitting and conductive functions, and thus the anti-peeping layer including the light-transmitting portion can have both anti-peeping and electrostatic shielding functions.
[0063] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A display module, characterized in that: include: A backlight module, a display panel, a first polarizer, and a second polarizer, wherein the display panel is located in the light emitting direction of the backlight module, the first polarizer is located on a side of the display panel away from the backlight module, and the second polarizer is located on a side of the display panel facing the backlight module; The display panel comprises a color filter substrate, an array substrate, and a liquid crystal layer. Along a first direction, the liquid crystal layer is located between the color filter substrate and the array substrate. The color filter substrate comprises a substrate and a color filter layer. The color filter layer is located on a side of the substrate facing the liquid crystal layer. The first direction is perpendicular to the plane where the display panel is located. The color film substrate comprises a transparent conductive layer, and the transparent conductive layer is located on a side of the substrate facing the first polarizer; The anti-peeping layer includes a light-transmitting portion and a light-shielding portion, wherein the light-transmitting portion and the light-shielding portion are arranged at intervals along a second direction, and the second direction is parallel to the plane where the display panel is located; the light-transmitting portion reuses the transparent conductive layer.
2. The display module according to claim 1, wherein: The light shielding portion includes at least one of a metal material and an opaque organic material.
3. The display module according to claim 2, wherein: The anti-peeping layer further includes a flat layer, which is located on a side of the light-transmitting portion facing the first polarizer, and covers the light-transmitting portion and the light-shielding portion; the flat layer is light-transmitting.
4. The display module according to claim 2, wherein: A surface of the transparent conductive layer facing away from the substrate comprises a groove, and the light shielding portion is at least partially located in the groove.
5. The display module according to claim 1, wherein: The transparent conductive layer comprises a groove, the groove penetrates the transparent conductive layer, and the light shielding portion is at least partially located in the groove.
6. The display module according to claim 5, characterized in that: The light shielding portion includes a metal material or a conductive non-metal material.
7. The display module according to claim 5, characterized in that: The light shielding portion includes a first sub-light shielding portion and a second sub-light shielding portion. Along the first direction, the first sub-light shielding portion is located on a side of the second sub-light shielding portion away from the substrate. The first sub-light shielding portion includes a black matrix, and the second sub-light shielding portion includes a metal material.
8. The display module according to claim 7, wherein: Along the first direction, the thickness of the first sub-light-shielding portion is greater than the thickness of the second sub-light-shielding portion.
9. The display module according to claim 2, wherein: The height of the light shielding portion in the first direction is H, 25 μm≤H≤150 μm; along the second direction, the width of the light shielding portion is L, 30 μm≤L≤50 μm.
10. The display module according to claim 1, wherein: The color filter layer includes a light blocking portion and an opening portion, a color resist is arranged in the opening portion, and along the first direction, the light blocking portion at least partially overlaps with the light shielding portion.
11. The display module according to claim 1, wherein: The light-transmitting portion is made of at least one material selected from the group consisting of indium tin oxide, indium zinc oxide, nano-ultrafine particle powder, and 3,4-ethylenedioxythiophene monomer.
12. A display device, characterized in that: Comprising a display module as described in any one of claims 1-11.