Display panel and display device

Abstract

The invention provides a display panel and a display device.The display panel comprises a color film substrate, an array substrate and a liquid crystal layer; the color film substrate comprises a substrate body and a first color filter layer, the first color filter layer comprises a plurality of first color resistors and first shading layers located between the adjacent first color resistors, each first color resistor forms a plurality of color resistor units, and each color resistor unit comprises a first primary color resistor, a first transparent color resistor and a second primary color resistor which are arranged in the first direction; a second color filter layer is formed on the side, close to the liquid crystal layer, of the array substrate and comprises a plurality of second color resistors and second shading layers formed between the adjacent second color resistors, and the second color resistors are in one-to-one correspondence with the first color resistors. And each second color resistor comprises a second transparent color resistor corresponding to the position of the first primary color resistor, a third transparent color resistor corresponding to the position of the second primary color resistor, and a third primary color resistor corresponding to the position of the first transparent color resistor. According to the technical scheme, peep prevention of the display device can be achieved.

Description

Technical Field

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

[0002] With the development of display technology, the viewing angle of display panels is constantly widening. While users enjoy the wide viewing angle, they may also face the problem of personal information leakage. For example, when users communicate with friends and family about privacy issues through their mobile phones, they hope that the content displayed on the mobile phone will not be peeped by others to avoid personal embarrassment or property loss caused by information leakage. In order to strengthen the protection of personal information, users usually use the method of tilting the screen or covering it with their body to prevent peeping, which causes inconvenience to users. Summary of the invention

[0003] In view of this, the present application provides a display panel and a display device for realizing anti-peeping of the display device, thereby improving the user's anti-peeping experience and convenience of use.

[0004] In order to achieve the above-mentioned object, in a first aspect, an embodiment of the present application provides a display panel, the display panel comprising: a color filter substrate, an array substrate, and a liquid crystal layer located between the color filter substrate and the array substrate;

[0005] The color filter substrate includes a base substrate and a first color filter layer formed on the base substrate, the first color filter layer includes a plurality of first color resists arranged in an array and a first light shielding layer located between adjacent first color resists, each of the first color resists forms a plurality of color resist units arranged in an array, and each color resist unit includes a first primary color resist, a first transparent color resist and a second primary color resist arranged along a first direction;

[0006] A second color filter layer is formed on one side of the array substrate close to the liquid crystal layer, the second color filter layer includes a plurality of second color resists arranged in an array and a second light shielding layer formed between adjacent second color resists, the second color resists correspond one-to-one to the first color resists, and each second color resist includes a second transparent color resist corresponding to the position of the first primary color resist, a third transparent color resist corresponding to the position of the second primary color resist, and a third primary color resist corresponding to the position of the first transparent color resist.

[0007] In a possible implementation manner of the first aspect, the first light-shielding layer and the second light-shielding layer satisfy: the angle range of α is 20° to 65°, and tanα=H / (A+B);

[0008] Wherein, H represents the distance between the first light-shielding layer and the second light-shielding layer, A represents half of the width of the first light-shielding layer, and B represents half of the width of the second light-shielding layer.

[0009] In a possible implementation manner of the first aspect, the liquid crystal layer includes a support column;

[0010] The first light-shielding layer includes a plurality of first black matrices and a plurality of second black matrices that are arranged at intervals and extend along a first direction, the first black matrices and the second black matrices are cross-arranged, and a first light-shielding area for shielding the support column is provided at a partial intersection of the first black matrix and the second black matrix; the second light-shielding layer includes a plurality of first light-shielding metals and a plurality of second light-shielding metals that are arranged at intervals and extend along a first direction, the first light-shielding metal and the second light-shielding metal are cross-arranged, and a second light-shielding area for shielding the support column is provided at a partial intersection of the first light-shielding metal and the second light-shielding metal.

[0011] In a possible implementation of the first aspect, the first light-shielding metal and the second light-shielding metal define a plurality of rectangular openings for arranging pixel electrodes, and a thickness of the pixel electrode is greater than or equal to a thickness of the second light-shielding layer.

[0012] In a possible implementation manner of the first aspect, a first flat layer is disposed on the lower surface of the first color filter layer, and two ends of the support column are abutted between the first flat layer and the second light shielding layer.

[0013] In a possible implementation manner of the first aspect, the projection shapes of the first light-shielding area and the second light-shielding area on the base substrate are rectangular.

[0014] In a possible implementation of the first aspect, a projection area of ​​the second light-shielding layer on the base substrate is located within a projection area of ​​the first light-shielding layer on the base substrate, and a projection of a central axis of each of the first black matrices on the base substrate coincides with a projection of a central axis of each of the first light-shielding metals on the base substrate, and a projection of a central axis of each of the second black matrices on the base substrate coincides with a projection of a central axis of each of the second light-shielding metals on the base substrate.

[0015] In a possible implementation of the first aspect, the array substrate also includes a thin film transistor layer and a second flat layer formed on the thin film transistor layer, a plurality of opening areas are etched on the second flat layer, the opening areas are used to accommodate the third primary color resistance, and the second flat layer forms the second transparent color resistance and the third transparent color resistance.

[0016] In a possible implementation manner of the first aspect, the first primary color resist, the second primary color resist, and the third primary color resist have different colors and the same size and shape.

[0017] In a second aspect, an embodiment of the present application provides a display device, a backlight module and a display panel as described in the first aspect or any possible implementation manner of the first aspect, wherein the backlight module is used to provide a backlight source for the display panel.

[0018] The display panel and display device provided by the embodiment of the present application, wherein the display panel includes: a color filter substrate, an array substrate, and a liquid crystal layer located between the color filter substrate and the array substrate; the color filter substrate includes a base substrate and a first color filter layer formed on the base substrate, the first color filter layer includes a plurality of first color resistors arranged in an array and a first light shielding layer located between adjacent first color resistors, each first color resistor forms a plurality of color resistor units arranged in an array, each color resistor unit includes a first primary color resistor, a first transparent color resistor, and a second primary color resistor arranged along a first direction; a second color filter layer is formed on one side of the array substrate close to the liquid crystal layer, the second color filter layer includes a plurality of second color resistors arranged in an array and a second light shielding layer formed between adjacent second color resistors, the second color resistors correspond to the first color resistors one by one, and each second color resistor includes a second transparent color resistor corresponding to the position of the first primary color resistor, a third transparent color resistor corresponding to the position of the second primary color resistor, and a third primary color resistor corresponding to the position of the first transparent color resistor. In this way, the anti-peeping property of the display device can be realized, and the user's anti-peeping experience and convenience of use can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of viewing angles provided for an embodiment of the present application;

[0020] Figure 2 A schematic cross-sectional view of a display panel provided in an embodiment of the present application;

[0021] Figure 3 A schematic top view of a display panel provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the relationship between the first light-shielding layer and the second light-shielding layer provided in an embodiment of the present application;

[0023] Figure 5 A top view of a first light shielding layer provided in an embodiment of the present application;

[0024] Figure 6 A top view of a second light shielding layer provided in an embodiment of the present application;

[0025] Figure 7 A schematic top view of a second flat layer provided in an embodiment of the present application;

[0026] Figure 8 A grayscale image of the display effect when the display panel provided in the embodiment of the present application displays a pure color image;

[0027] Fig. 9A schematic diagram of light rays when viewing a red image from a normal viewing angle provided in an embodiment of the present application;

[0028] Fig.10 A schematic diagram of light rays when viewing a red image from a left perspective provided in an embodiment of the present application;

[0029] Fig.11 A schematic diagram of light rays when viewing a red image from a right perspective provided in an embodiment of the present application;

[0030] Fig.12 A schematic diagram of light when viewing a green picture from a straight angle provided in an embodiment of the present application;

[0031] Fig.13 A schematic diagram of light when viewing a green image from a left perspective provided in an embodiment of the present application;

[0032] Fig.14 A schematic diagram of light rays when viewing a green image from the right perspective provided in an embodiment of the present application;

[0033] Fig.15 A schematic diagram of light when viewing a blue picture from a normal viewing angle is provided for the embodiment of the present application;

[0034] Fig.16 A schematic diagram of light rays when viewing a blue image from a left perspective provided in an embodiment of the present application;

[0035] Fig.17 A schematic diagram of light rays when viewing a blue image from a right perspective provided in an embodiment of the present application;

[0036] Fig.18 A schematic diagram of light when viewing a white image from a normal viewing angle provided in an embodiment of the present application;

[0037] Fig.19 A schematic diagram of light when viewing a white image from a left perspective provided in an embodiment of the present application;

[0038] Fig. 20 A schematic diagram of light when viewing a white image from the right perspective provided in an embodiment of the present application;

[0039] Fig.21 A schematic diagram of the structure of a display device provided in an embodiment of the present application.

[0040] Description of reference numerals:

[0041] 1-color filter substrate; 11-base substrate; 12-first color filter layer; 121-first color resistance; 1211-first primary color resistance; 1212-first transparent color resistance; 1213-second primary color resistance; 122-first light shielding layer; 1221-first black matrix; 1222-second black matrix; 1223-first light shielding area;

[0042] 2-array substrate; 21-second color filter layer; 211-second color resistance; 2111-second transparent color resistance; 2112-third transparent color resistance; 2113-third primary color resistance; 212-second light shielding layer; 2121-first light shielding metal; 2122-second light shielding metal; 2123-second light shielding area; 22-thin film transistor layer; 23-second flat layer; 231-opening area;

[0043] 3-liquid crystal layer; 31-liquid crystal molecules; 32-support pillars; 4-first flat layer; 5-pixel electrodes;

[0044] 100-display panel; 200-backlight module. DETAILED DESCRIPTION

[0045] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation method section of the embodiments of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0046] As liquid crystal display devices become more popular, they have been applied to all aspects of life and work. The protection of personal and work information has become an issue that cannot be ignored. Among them, portable display devices such as mobile phones and laptop power supplies have more associated personal information due to their wide range of usage scenarios, and the consequences of leakage are more serious. In the display field, the viewing angle is the angle between the line of sight and the vertical direction of the display panel. Figure 1 The sum of θ and φ is called the normal viewing angle (or viewing angle). Within the normal viewing angle, the user can normally view the display content of the display panel. Outside the normal viewing angle, it can be called the anti-peeping angle ρ.

[0047] In the prior art, the commonly used anti-peeping means are to attach a louver film to the outside of the display panel, and to set two layers of anti-peeping liquid crystal layers and dual-light source dual light guide plates inside the display panel. The louver film controls the viewing angle by controlling the angle of the light exiting the grating. When viewing the display image at a viewing angle outside the visual angle, the light will be blocked by the grating and the display image cannot be seen clearly. However, this method will cause the display brightness to decrease, and the user needs to increase the brightness to see the display content clearly, which will lead to an increase in power consumption. The technical solution of two layers of anti-peeping liquid crystal layers requires three polarizers and four glass substrates, which will not only lead to a worse display effect at the normal viewing angle, but also increase the thickness and cost of the display panel. In the technical solution of dual-light source dual light guide plates, each light source corresponds to a light guide plate. Obviously, this will also increase the cost, thickness and power consumption of the display panel.

[0048] In view of this, an embodiment of the present application provides a display panel, which can improve the user experience while preventing peeping.

[0049] Figure 2 A schematic cross-sectional view of a display panel provided in an embodiment of the present application. Figure 3 Schematic diagram of a top view of a display panel provided in an embodiment of the present application. Figure 2 and Figure 3 As shown, the display panel may include: a color filter substrate 1 , an array substrate 2 , and a liquid crystal layer 3 located between the color filter substrate 1 and the array substrate 2 .

[0050] The color filter substrate 1 may include a base substrate 11 and a first color filter layer 12 formed on the base substrate 11. The base substrate 11 may be a glass substrate, so that the flatness and light transmittance can be improved. The first color filter layer 12 may include a plurality of first color resists 121 arranged in an array and a first light shielding layer 122 located between adjacent first color resists 121. Each first color resist 121 may form a plurality of color resist units arranged in an array, and each color resist unit may include a plurality of first color resist units arranged in an array along a first direction ( Figure 3 The first light shielding layer 122 can reduce the color mixing between the light emitted by adjacent color blocks, thereby improving the contrast and color saturation of the displayed image, making the colors more vivid and accurate.

[0051] A second color filter layer 21 may be formed on one side of the array substrate 2 close to the liquid crystal layer 3. The second color filter layer 21 includes a plurality of second color resists 211 arranged in an array and a second light shielding layer 212 formed between adjacent second color resists 211. The second color resists 211 correspond to the first color resists 121 one by one. Each second color resist 211 includes a second transparent color resist 2111 corresponding to the position of the first primary color resist 1211, a third transparent color resist 2112 corresponding to the position of the second primary color resist 1213, and a third primary color resist 2113 corresponding to the position of the first transparent color resist 1212. The function of the second light shielding layer 212 can refer to the function of the first light shielding layer 122, which will not be repeated here.

[0052] The colors of the first primary color resist 1211, the second primary color resist 1213, and the third primary color resist 2113 are different. For example, the color of the first primary color resist 1211 may be red, the color of the second primary color resist 1213 may be green, and the color of the third primary color resist 2113 may be blue. The first primary color resist 1211 may allow light of the first primary color to pass through and absorb light of other colors, so that the first primary color can be displayed. The first primary color resist 1211 may include a colored material, a transparent polymer, a multifunctional monomer, and an additive corresponding to the first primary color. Compared with the first primary color resist 1211, the difference between the other primary color resists is mainly that the colored materials are different. The first transparent color resist 1212, the second transparent color resist 2111, and the third transparent color resist 2112 do not contain a colored material.

[0053] The liquid crystal layer 3 may include liquid crystal molecules 31, support columns 32, and alignment films (not shown) located on the upper and lower sides of the liquid crystal molecules 31 and used to align the liquid crystal molecules 31. The liquid crystal molecules 31 are a special organic compound with a specific arrangement and optical rotation properties. When the liquid crystal molecules 31 are driven by an electric field, they can rotate or rearrange, thereby changing the propagation direction of light.

[0054] The support column 32 can be made of photoresist, and has the functions of separating the liquid crystal layer 3 and the frame glue, supporting the display panel, and controlling the thickness of the liquid crystal layer 3. The alignment ability of the alignment film can guide the liquid crystal molecules 31 to form a pre-tilt angle when no voltage is applied, thereby achieving a uniform alignment effect, thereby accelerating the deflection speed of the liquid crystal molecules 31 and reducing afterimages.

[0055] Through the above implementation, the user can normally view the display screen when viewing the display panel at a straight angle. When viewing at a side angle, the color of the light emitted by the display panel can be mixed, so that the content of the display screen cannot be seen clearly, thereby achieving anti-peeping.

[0056] See also Figure 4 , the first light shielding layer 122 and the second light shielding layer 212 can meet: the angle range of α is 20°~65°, tanα=H / (A+B). Among them, H can represent the distance between the first light shielding layer 122 and the second light shielding layer 212, A can represent half of the width of the first light shielding layer 122, and B can represent half of the width of the second light shielding layer 212. In this way, the anti-peeping angle ρ can meet 25°~70°, thereby meeting the needs of users and preventing peeping at the same time. It can be understood that the values ​​of H, A and B can also be determined according to actual needs.

[0057] Considering that the thicknesses of the first primary color resist 1211, the first transparent color resist 1212, and the second primary color resist 1213 may be different, in some embodiments, a first flat layer 4 may be provided on the lower surface of the first color filter layer 12, so that the two ends of the support column 32 can be abutted between the first flat layer 4 and the second light shielding layer 212, thereby improving the support stability of the support column 32 and further improving the reliability of the display panel. The size and shape of the first primary color resist 1211, the second primary color resist 1213, and the third primary color resist 2113 may be the same, so as to reduce the color deviation when the user looks directly at the display panel.

[0058] Figure 5 A top view of the first light shielding layer provided in an embodiment of the present application, such as Figure 5 As shown, the first light shielding layer 122 may include a plurality of first black matrices 1221 extending along the first direction and a plurality of second black matrices 1222 extending along the second direction, which are arranged at intervals. The first black matrix 1221 and the second black matrix 1222 may be arranged crosswise. A first light shielding region 1223 for shielding the support column 32 may be provided at a portion of the intersection of the first black matrix 1221 and the second black matrix 1222.

[0059] Figure 6 This is a top view of the second light shielding layer provided in the embodiment of the present application. Figure 6 As shown, the second light shielding layer 212 can be made of metal material or non-metal material. The second light shielding layer 212 can be made of metal material as an example. The second light shielding layer 212 can include a plurality of first light shielding metals 2121 extending along the first direction and a plurality of second light shielding metals 2122 extending along the second direction arranged at intervals. The first light shielding metals 2121 and the second light shielding metals 2122 can be arranged crosswise, and a part of the intersection position of the first light shielding metal 2121 and the second light shielding metal 2122 can be provided with a second light shielding area 2123 for shielding the support column 32.

[0060] Similar to the first color filter layer, the second light shielding layer 212 can reduce the color mixing between adjacent color filters, so as to shield light and control the light output angle of the second color filter 211. In addition, when the thin film transistor drives the liquid crystal molecules 31 to deflect, it is necessary to transmit the driving voltage to the pixel electrode 5 through the transmission line. Compared with the second light shielding layer 212 using non-metallic materials, the embodiment of the present application uses metal to prepare the second light shielding layer 212, so that the first light shielding metal 2121 and the second light shielding metal 2122 can transmit the driving voltage to the pixel electrode 5, thereby realizing the reuse of the second light shielding layer 212.

[0061] Figure 5 and Figure 6Taking the projection shape of the first shading area 1223 and the second shading area 2123 on the base substrate 11 as an outward-expanding rectangle as an example, in actual products, it can also be other shapes, and the embodiments of the present application do not impose any special restrictions on this. In some embodiments, the first shading area 1223 and the second shading area 2123 can be set in a one-to-one correspondence, so that the support area at the upper and lower ends of the support column 32 can be expanded, and the stability of the support column 32 can be improved. In some other embodiments, the number of the second shading area 2123 can be less than the first shading area 1223, so that the pattern of the first shading layer 122 and the pattern of the second shading layer 212 can be different, which can reduce the appearance of moiré and improve the display quality.

[0062] The projection area of ​​the second light shielding layer 212 on the substrate can be located within the projection area of ​​the first light shielding layer 122 on the substrate, and the projection of the central axis of each first black matrix 1221 on the substrate can coincide with the projection of the central axis of each first light shielding metal 2121 on the substrate, and the projection of the central axis of each second black matrix 1222 on the substrate can coincide with the projection of the central axis of each second light shielding metal 2122 on the substrate. That is, the patterns of the first light shielding layer 122 and the second light shielding layer 212 can be the same, the width of the first light shielding metal 2121 is smaller than the width of the first black matrix 1221, and the width of the second light shielding metal 2122 is smaller than the width of the second black matrix 1222.

[0063] By setting the width of the first shading layer 122 in the first direction to be greater than the width of the second shading layer 212 in the first direction, and aligning the pattern center axis of the second shading layer 212, it is possible to reduce the mixing of adjacent color-blocked light at a positive viewing angle while reducing the blocking of light by the second shading layer 212 and increasing the light transmittance through the second color filter layer 21. On the other hand, it can further reduce the generation of moiré patterns.

[0064] It should be noted that for different display devices, such as mobile phones, tablet computers and laptop computers, due to the different sizes and resolutions of the display panels, the sizes of the first color resist 121 and the second color resist 211, the widths of the first black matrix 1221 and the second black matrix 1222, the widths of the first light shielding metal 2121 and the second light shielding metal 2122, and the distance between the first color filter layer 12 and the second color filter layer 21 can be determined according to actual needs. For example, if the mobile phone is relatively thin, the sum of the thickness of the first light shielding layer 122, the first color resist 121, the first flat layer 4 and the support column 32 can be 8 to 12 microns.

[0065] When preparing the first color filter layer 12, the first light shielding layer 122 may be formed first, and then the first color resist 121 may be formed on the first light shielding layer 122. When preparing the second light shielding layer 212, in some embodiments, the second color resist 211 may be formed first, and then a metal layer may be formed on the second color resist 211 by physical vapor deposition, and then the second light shielding layer 212 may be formed after an etching process.

[0066] It can be understood that in some embodiments, the regions of the first light-shielding metal 2121 and the second light-shielding metal 2122 can be pre-formed above the second color resist 211, and a first etching process can be used to form a groove on the upper surface of the second color resist 211, and then a physical vapor deposition process can be used to deposit a metal layer. After the second etching process, only the metal layer above the groove is retained to form a second light-shielding layer 212. In this way, the thickness of the first color filter layer 12 can be reduced, thereby reducing the thickness of the display panel.

[0067] See also Figure 5 and Figure 6 The first light shielding metal 2121 and the second light shielding metal 2122 can define a plurality of rectangular openings for setting the pixel electrode 5, and the pixel electrode 5 can drive the liquid crystal molecules 31 of the liquid crystal layer 3 to deflect. The thickness of the pixel electrode 5 can be greater than or equal to the thickness of the second light shielding layer 212, and the specific thickness can be selected according to actual needs, so as to achieve the function of flattening the second light shielding layer 212.

[0068] The array substrate may further include a thin film transistor layer 22 and a second planar layer 23 formed on the thin film transistor layer 22. In a possible implementation, Figure 7 This is a top view of the second flat layer provided in the embodiment of the present application, see Figure 7 A plurality of opening regions 231 may be etched on the second flat layer 23 , and the opening regions 231 may be used to accommodate the third primary color resist 2113 . The second flat layer 23 may form a second transparent color resist 2111 and a third transparent color resist 2112 .

[0069] By opening an opening area 231 in the second flat layer 23 to accommodate the third primary color resist 2113, and using the material of the second flat layer 23 to form the second transparent color resist 2111 and the third transparent color resist 2112, not only can the thickness of the second color filter layer 21 be reduced, but also the second flat layer 23 can be reused, thereby reducing the cost and preparation process of additionally preparing transparent color resists, thereby improving the preparation efficiency.

[0070] The following is a description of the display panel described in the present application when displaying a red picture, a green picture, a blue picture, a white picture and a black picture respectively in combination with a specific embodiment, with -25° to 25° representing the angle range of the normal viewing angle when the user views the display panel, ρ greater than 25° being the right viewing angle, ρ less than -25° being the left viewing angle, the first primary color resistance 1211 being the red color resistance, the second primary color resistance 1213 being the green color resistance and the third primary color resistance 2113 being the blue color resistance as an example. The grayscale diagram of the display effect when the display panel displays the above pure color pictures is shown in FIG. Figure 8 shown.

[0071] When the display panel displays a red image, the deflection direction of the liquid crystal molecules 31 under the red color resistance is deflected to a direction perpendicular to the display panel, and the liquid crystal molecules 31 under the green color resistance and above the blue color resistance are not deflected. Fig. 9 After the white light emitted by the backlight source is filtered by the red color block, only the red light can be emitted normally from the red color block, and the user can watch the red picture normally.

[0072] When the user views the display panel within the left viewing angle range, see Fig.10 Since the liquid crystal molecules 31 under the red color resist allow light to pass through, the white light can pass through the liquid crystal molecules 31 under the red color resist after passing through the second transparent color resist 2111 and then enter the green color resist, and after passing through the green color resist, the green light is emitted out of the display panel, thereby mixing the red light and the green light, so that the user cannot see the display picture clearly when viewing the display panel from a left angle.

[0073] When the user views the display panel within the right viewing angle range, see Fig.11 Since the liquid crystal molecules 31 under the red color resist allow light to pass through, after passing through the second transparent color resist 2111, the white light can pass through the liquid crystal molecules 31 under the red color resist and enter the first transparent color resist 1212 and exit the display panel, thereby mixing the red light and the white light, making it difficult for the user to see the display image clearly when viewing the display panel from the right viewing angle.

[0074] When the display panel displays a green image, the deflection direction of the liquid crystal molecules 31 under the green color resistance is deflected to a direction perpendicular to the display panel, and the liquid crystal molecules 31 under the red color resistance and above the blue color resistance are not deflected. Fig.12 After the white light emitted by the backlight source is filtered by the green color block, only the green light can normally emit the green color block, and the user can watch the green picture normally.

[0075] When the user views the display panel within the left viewing angle range, see Fig.13Since the liquid crystal molecules 31 under the green color resist allow light to pass through, after passing through the third transparent color resist 2112, the white light can pass through the liquid crystal molecules 31 under the green color resist, enter the first transparent color resist 1212 and exit the display panel, thereby mixing the white light and the green light, making it difficult for the user to see the display image clearly when viewing the display panel from a left viewing angle.

[0076] When the user views the display panel within the right viewing angle range, see Fig.14 Since the liquid crystal molecules 31 under the green color block allow light to pass through, after passing through the third transparent color block 2112, the white light can pass through the liquid crystal molecules 31 under the green color block and enter the red color block, causing the red light to be emitted from the display panel. In addition, since the transmission spectrum of the blue color block overlaps with the transmission spectrum of the green color block, after the white light passes through the liquid crystal molecules 31 under the blue color block and the green color block, part of the blue light will be emitted from the green color block, resulting in the mixing of green light, blue light and red light, so that the user cannot see the display picture clearly when viewing the display panel from the right viewing angle.

[0077] When the display panel displays a blue image, the deflection direction of the liquid crystal molecules 31 above the blue color resist is deflected to a direction perpendicular to the display panel, and the liquid crystal molecules 31 below the red and green color resists are not deflected. Fig.15 After the white light emitted by the backlight source is filtered by the blue color block, only the blue light can be emitted normally through the green color block, and the user can watch the blue picture normally.

[0078] When the user views the display panel within the left viewing angle range, see Fig.16 Since the liquid crystal molecules 31 under the blue color resist allow light to pass through, after passing through the third transparent color resist 2112, the white light can pass through the liquid crystal molecules 31 above the blue color resist and enter the first transparent color resist 1212 and exit the display panel, thereby mixing the white light and the blue light, making it difficult for the user to see the display image clearly when viewing the display panel from a left viewing angle.

[0079] When the user views the display panel within the right viewing angle range, see Fig.17 Since the liquid crystal molecules 31 below the blue color block allow light to pass through, after passing through the second transparent color block 2111, the white light can pass through the liquid crystal molecules 31 above the blue color block and enter the first transparent color block 1212 and exit the display panel. In addition, after passing through the blue color block and the liquid crystal molecules 31 above the blue color block, part of the blue light will exit the green color block, thereby mixing the blue light and the white light, so that the user cannot see the display image clearly when viewing the display panel from the right viewing angle.

[0080] When the display panel displays a white image, the deflection direction of the liquid crystal molecules 31 below the red and green color resists and above the blue color resist is deflected to a direction perpendicular to the display panel. Fig.18 The white light passing through the second transparent color block 2111 is emitted from the display panel after passing through the red color block, the blue light passing through the blue color block is emitted from the display panel after passing through the first transparent color block 1212, and the white light passing through the third transparent color block 2112 is emitted from the display panel after passing through the green block. The user can normally see that the display panel displays white.

[0081] When the user views the display panel within the left viewing angle range, see Fig.19 The white light passing through the third transparent color resist 2112 can pass through the liquid crystal molecules 31 above the blue color resist, enter the first transparent color resist 1212 and exit the display panel. Moreover, since the white light from the backlight source is filtered by each color resist, there is a difference in the amount of light obliquely emitted from the red color resist, the first transparent light resist and the green color resist, resulting in color mixing, which makes it difficult for the user to see the display picture clearly when viewing the display panel from a left angle.

[0082] When the user views the display panel within the right viewing angle range, see Fig. 20 After passing through the blue color block, the white light enters the green color block and exits the display panel after passing through the liquid crystal molecules 31 above the blue color block. In addition, the amount of light obliquely exiting the red color block, the first transparent light block, and the green color block is also different, resulting in color mixing, so that the user cannot see the display image clearly when viewing the display panel from the right viewing angle.

[0083] When a black picture is displayed, the liquid crystal molecules 31 of the liquid crystal layer 3 do not deflect, and when the user views the display panel within the normal viewing angle range, the display screen appears black because the liquid crystal layer 3 is opaque. When the user views the display panel within the left viewing angle range or the right viewing angle range, the display screen does not appear pure black due to light leakage in the liquid crystal display device, so that the user cannot see the display screen clearly when viewing the display panel at the left viewing angle or the right viewing angle.

[0084] It is understandable that the solution described in the embodiment of the present application can also be used in combination with a traditional single-layer color filter layer. For example, the right area of ​​the display panel can adopt a traditional single-layer color filter layer, and the left area can adopt the solution described in the embodiment of the present application, so that within the normal viewing angle range, the user can normally view the content displayed on the display panel. The person on the left side of the display panel cannot view the content displayed on the left side of the display panel, thereby realizing regional privacy protection.

[0085] It is understandable that the above description is based on an example in which the first color filter layer 12 includes red color resist and green color resist, and the second color filter layer 21 includes blue color resist. In actual products, the red color resist and the green color resist may be located in different film layers.

[0086] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents, such as applying the technical solutions to other display devices, such as white organic light-emitting display devices. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0087] The display panel provided by the embodiment of the present application includes: a color filter substrate, an array substrate, and a liquid crystal layer located between the color filter substrate and the array substrate; the color filter substrate includes a base substrate and a first color filter layer formed on the base substrate, the first color filter layer includes a plurality of first color resistors arranged in an array and a first light shielding layer located between adjacent first color resistors, each first color resistor forms a plurality of color resistor units arranged in an array, each color resistor unit includes a first primary color resistor, a first transparent color resistor, and a second primary color resistor arranged along a first direction; a second color filter layer is formed on one side of the array substrate close to the liquid crystal layer, the second color filter layer includes a plurality of second color resistors arranged in an array and a second light shielding layer formed between adjacent second color resistors, the second color resistors correspond to the first color resistors one by one, and each second color resistor includes a second transparent color resistor corresponding to the position of the first primary color resistor, a third transparent color resistor corresponding to the position of the second primary color resistor, and a third primary color resistor corresponding to the position of the first transparent color resistor. In this way, the anti-peeping function of the display device can be realized, and the user's anti-peeping experience and convenience of use can be improved.

[0088] Based on the same inventive concept, an embodiment of the present application also provides a display device. Fig.21 This is a schematic diagram of the structure of the display device provided in the embodiment of the present application. Fig.21 As shown, the display device may include the display panel 100 and the backlight module 200 described in any of the above embodiments, wherein the backlight module 200 is used to provide a backlight source for the display panel 100 .

[0089] Since the display device in this embodiment includes the display panel in the above embodiment, that is, the display device in this embodiment has all the technical features and technical effects of the above display panel embodiments, specific reference is made to the above embodiment and no further details are given here.

[0090] It should be understood that in the description of the present application specification and the appended claims, the terms "include", "comprises", "has" and any variations thereof are intended to cover non-exclusive inclusions and mean "including but not limited to", unless otherwise specifically emphasized.

[0091] In the description of this application, unless otherwise specified, " / " indicates that the objects associated with each other are in an "or" relationship. For example, A / B can represent A or B. "And / or" in this application is used to describe the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural.

[0092] Furthermore, in the description of the present application, unless otherwise specified, "plurality" refers to two or more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items.

[0093] In addition, in the description of the present application, it should be understood that the terms "longitudinal", "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0094] In the present application, unless otherwise clearly specified and limited, the terms "connection", "connected", etc. should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in this application according to the specific circumstances.

[0095] In addition, in the description of the present specification and the appended claims, the terms "first", "second", etc. are used to distinguish similar objects, but not necessarily to describe a specific order or sequence, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein; the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0096] In the embodiments of the present application, the words "exemplarily" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplarily" or "for example" is intended to present related concepts in a specific way.

[0097] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that one or more embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

Claims

1. A display panel, characterized in that: include: A color filter substrate, an array substrate, and a liquid crystal layer located between the color filter substrate and the array substrate; The color filter substrate includes a base substrate and a first color filter layer formed on the base substrate, the first color filter layer includes a plurality of first color resists arranged in an array and a first light shielding layer located between adjacent first color resists, each of the first color resists forms a plurality of color resist units arranged in an array, and each color resist unit includes a first primary color resist, a first transparent color resist and a second primary color resist arranged along a first direction; A second color filter layer is formed on one side of the array substrate close to the liquid crystal layer, the second color filter layer includes a plurality of second color resists arranged in an array and a second light shielding layer formed between adjacent second color resists, the second color resists correspond one-to-one to the first color resists, and each second color resist includes a second transparent color resist corresponding to the position of the first primary color resist, a third transparent color resist corresponding to the position of the second primary color resist, and a third primary color resist corresponding to the position of the first transparent color resist.

2. The display panel according to claim 1, characterized in that: The first light shielding layer and the second light shielding layer satisfy: the angle range of α is 20° to 65°, and tanα=H / (A+B); Wherein, H represents the distance between the first light-shielding layer and the second light-shielding layer, A represents half of the width of the first light-shielding layer, and B represents half of the width of the second light-shielding layer.

3. The display panel according to claim 1, characterized in that: The liquid crystal layer includes support pillars; The first light-shielding layer includes a plurality of first black matrices and a plurality of second black matrices that are arranged at intervals and extend along a first direction, the first black matrices and the second black matrices are cross-arranged, and a first light-shielding area for shielding the support column is provided at a partial intersection of the first black matrix and the second black matrix; the second light-shielding layer includes a plurality of first light-shielding metals and a plurality of second light-shielding metals that are arranged at intervals and extend along a first direction, the first light-shielding metal and the second light-shielding metal are cross-arranged, and a second light-shielding area for shielding the support column is provided at a partial intersection of the first light-shielding metal and the second light-shielding metal.

4. The display panel according to claim 3, characterized in that: The first light-shielding metal and the second light-shielding metal define a plurality of rectangular openings for arranging pixel electrodes, and the thickness of the pixel electrodes is greater than or equal to the thickness of the second light-shielding layer.

5. The display panel according to claim 3, characterized in that: A first flat layer is disposed on the lower surface of the first color filter layer, and two ends of the support column are abutted between the first flat layer and the second light shielding layer.

6. The display panel according to claim 3, characterized in that: The projection shapes of the first light shielding area and the second light shielding area on the base substrate are rectangular.

7. The display panel according to claim 4, characterized in that: The projection area of ​​the second light-shielding layer on the base substrate is located within the projection area of ​​the first light-shielding layer on the base substrate, and the projection of the central axis of each of the first black matrices on the base substrate coincides with the projection of the central axis of each of the first light-shielding metals on the base substrate, and the projection of the central axis of each of the second black matrices on the base substrate coincides with the projection of the central axis of each of the second light-shielding metals on the base substrate.

8. The display panel according to claim 1, characterized in that: The array substrate also includes a thin film transistor layer and a second flat layer formed on the thin film transistor layer, a plurality of opening areas are etched on the second flat layer, the opening areas are used to accommodate the third primary color resistance, and the second flat layer forms the second transparent color resistance and the third transparent color resistance.

9. The display panel according to any one of claims 1 to 8, characterized in that: The first primary color resist, the second primary color resist, and the third primary color resist have different colors and the same size and shape.

10. A display device, characterized in that: include: A backlight module and a display panel as claimed in any one of claims 1 to 9, wherein the backlight module is used to provide a backlight source for the display panel.

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