Display panel and display device

Abstract

The present invention provides a display panel and a display device. The display panel includes a display area, and the display area has a transparent display area and a non-transparent display area surrounding the transparent display area. In the display area, the display panel also includes a backlight panel and a liquid crystal panel. The backlight panel has a first through hole, and the first through hole corresponds to the transparent display area. The liquid crystal panel is arranged on the backlight panel. Among them, the liquid crystal panel includes a driving layer and a liquid crystal layer. The driving layer has a first driving circuit and a second driving circuit. The liquid crystal layer has a first liquid crystal area and a second liquid crystal area. The first liquid crystal area corresponds to the transparent display area. The second liquid crystal area corresponds to the non-transparent display area. The first driving circuit corresponds to the first liquid crystal area. The second driving circuit corresponds to the second liquid crystal area.

Description

Technical Field

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

[0002] Smart terminals such as mobile phones and tablets are becoming an indispensable part of people's daily lives due to their convenience, entertainment and diverse functions. However, with the continuous development of display technology, the application of more and more advanced technologies in smart terminals has greatly enriched people's lives. However, at the same time, people's requirements and expectations for smart terminals are getting higher and higher. While enjoying the basic functions brought by smart terminals such as mobile phones and tablets, people also have higher requirements for smart terminals, such as the full-screen design of smart terminals.

[0003] Full-screen technology is a relatively broad definition of the display industry for the design of ultra-high screen-to-body ratio mobile phones. Literally, the front of the mobile phone is all screen, the display interface of the mobile phone is completely covered by the screen, and the four borders of the mobile phone are all borderless, pursuing an ultra-high screen-to-body ratio close to 100%. However, due to the needs of other basic functions that are indispensable to mobile phones, such as the front camera, earpiece, distance sensor and light sensor, at present, a certain gap is required above the screen of the mobile display device to accommodate the above functional components. The full-screen display claimed by the industry is temporarily only a display device with an ultra-high screen-to-body ratio, and there is no display device that can achieve a screen-to-body ratio of 100%, that is, the so-called "bangs screen" and "water drop screen", which affects the overall aesthetics of the terminal smart terminal. Alternatively, in the prior art, some basic functional components are placed through other mechanical structures, such as a lifting camera and other structures to achieve full-screen display, but the display device with a lifting camera has the disadvantages of not being waterproof, having a low service life, being easy to damage, and having a low user experience. Therefore, the prior art needs a technical solution that can further reduce or eliminate the impact of the camera on the screen-to-body ratio and improve the screen-to-body ratio. Summary of the invention

[0004] The purpose of the present invention is to provide a display panel and a display device, which combine two different liquid crystal display technologies to solve the problems in the prior art that the screen-to-body ratio of mobile display devices cannot reach 100%, cannot achieve a true full screen, and the overall aesthetics is poor.

[0005] To achieve the above objective, the present invention provides a display panel, which includes a display area, wherein the display area has a transparent display area and a non-transparent display area surrounding the transparent display area.

[0006] In the display area, the display panel further comprises a backlight panel and a liquid crystal panel. The backlight panel has a first through hole, and the first through hole corresponds to the transparent display area. The liquid crystal panel is arranged on the backlight panel.

[0007] The liquid crystal panel includes a driving layer and a liquid crystal layer. The driving layer has a first driving circuit and a second driving circuit. The liquid crystal layer is arranged on the driving layer and has a first liquid crystal area and a second liquid crystal area. The first liquid crystal area corresponds to the transparent display area. The second liquid crystal area corresponds to the non-transparent display area. The first driving circuit corresponds to the first liquid crystal area and is used to provide a driving signal to the first liquid crystal area. The second driving circuit corresponds to the second liquid crystal area and is used to provide a driving signal to the second liquid crystal area.

[0008] Furthermore, the liquid crystal panel further comprises a first light source, which is arranged on a side of the liquid crystal panel close to the first liquid crystal region. The driving layer further comprises a third driving circuit corresponding to the first light source, and the third driving layer is used to provide a driving signal for the first light source.

[0009] Furthermore, the first light source is an organic light emitting diode light source.

[0010] Furthermore, the first liquid crystal region is filled with scattering liquid crystal.

[0011] Furthermore, in the display area, the display panel further includes a second light source, and the second light source is disposed on a side of the backlight plate close to the second liquid crystal area.

[0012] Furthermore, the second light source is a light emitting diode light source.

[0013] Further, in the display area, the display panel further comprises a first polarizer and a second polarizer. The first polarizer is disposed between the backlight plate and the liquid crystal panel. The first polarizer has a second through hole, and the second through hole corresponds to the transparent display area. The second polarizer is disposed on a surface of the liquid crystal panel away from the first polarizer. The second polarizer has a third through hole, and the third through hole corresponds to the transparent display area.

[0014] Furthermore, the liquid crystal panel further comprises a first substrate, a second substrate and a sealant layer. The first substrate is arranged on a side of the driving layer away from the liquid crystal layer. The second substrate is arranged on a side of the liquid crystal layer away from the driving layer. The sealant layer is arranged at the edge of the first substrate and the second substrate. There is a gap between the sealant layer and the liquid crystal layer, and the first light source is arranged in the gap.

[0015] The present invention further provides a display device, which includes any one of the display panels described above.

[0016] Furthermore, the display device further comprises a camera, which is arranged on a surface of the display panel close to the backlight plate and corresponds to the transparent display area.

[0017] The advantages of the present invention are: a display panel and a display device of the present invention, by combining two different liquid crystal display technologies, divide the display panel into a transparent display area and a non-transparent display area. When the camera is turned on, the transparent display area is transparent and can provide a lighting channel for the camera. When the camera is turned off, the transparent display area can display the picture normally, thereby increasing the screen-to-body ratio, realizing a true full-screen display, reducing the impact of under-screen devices such as the camera on the display panel, improving the overall aesthetics of the display surface device, and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a front view of a display panel in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of some components of a display panel according to an embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the layered structure of the liquid crystal panel in an embodiment of the present invention.

[0022] The components in the figure are shown as follows:

[0023] Display panel 1; Display area 10;

[0024] Transparent display area 11; Non-transparent display area 12;

[0025] Backlight plate 100; First through hole 101;

[0026] First polarizer 200; Second through hole 201;

[0027] Liquid crystal panel 300; Liquid crystal layer 310;

[0028] First liquid crystal region 311; Second liquid crystal region 312;

[0029] Driving layer 320; First driving circuit 321;

[0030] A second driving circuit 322; A third driving circuit 323;

[0031] A first substrate 330; A second substrate 340;

[0032] Frame glue layer 350; First light source 360;

[0033] The second polarizer 400; The third through hole 401;

[0034] Second light source 500; Camera 2;

[0035] Display device 1000. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below with reference to the drawings in the specification to prove that the present invention can be implemented. The embodiments of the invention can fully introduce the present invention to those skilled in the art, making its technical content clearer and easier to understand. The present invention can be embodied through many different forms of embodiments of the invention, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0037] In the drawings, components with the same structure are indicated by the same numerical reference numerals, and components with similar structures or functions are indicated by similar numerical reference numerals. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of the components is appropriately exaggerated in some places in the drawings.

[0038] In addition, the following descriptions of the various embodiments of the invention are made with reference to the attached diagrams to illustrate specific embodiments of the invention that the present invention can be implemented with. The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] When some components are described as being "on" another component, the component may be directly placed on the other component; there may also be an intermediate component on which the component is placed, and the intermediate component is placed on the other component. When a component is described as being "mounted on" or "connected to" another component, the two may be understood to be directly "mounted on" or "connected", or one component may be indirectly "mounted on" or "connected to" another component via an intermediate component.

[0040] like Figure 1 As shown, a display panel 1 is provided in an embodiment of the present invention. The display panel 1 includes a display area 10 . The display area 10 includes a transparent display area 11 and a non-transparent display area 12 . The non-transparent display area 12 surrounds the transparent display area 11 .

[0041] like Figure 2 As shown, in the display area 10 , the display panel 1 further includes a backlight panel 100 and a liquid crystal panel 300 .

[0042] The liquid crystal panel 300 is disposed on the backlight plate 100 , and includes a liquid crystal layer 310 , a driving layer 320 , and a first light source 360 ​​.

[0043] The liquid crystal layer 310 has a first liquid crystal region 311 and a second liquid crystal region 312 .

[0044] The first liquid crystal area 311 is filled with scattering liquid crystal, and it corresponds to the transparent display area 11. The scattering liquid crystal can cause the liquid crystal molecules to move in disorder by changing external conditions such as electric field, voltage, current, frequency, etc., so as to change the order and angle of the liquid crystal molecules in the first liquid crystal area 311, and change the refractive index of the liquid crystal molecules, so as to scatter the incident light incident to the first liquid crystal area 311. The first liquid crystal area 311 realizes the display of the picture in the transparent display area 11 through the scattering liquid crystal, and when the under-screen components such as the camera 2 are working, the transparent display area 11 is transparent, and the scattering liquid crystal does not hinder the lighting of the under-screen components such as the camera 2.

[0045] The second liquid crystal area 312 is filled with conventional liquid crystal, which corresponds to the non-transparent display area 12. The conventional liquid crystal can cause its liquid crystal molecules to move by changing the electric field or voltage, so that the order of the liquid crystal molecules in the second liquid crystal area 312 is changed, thereby controlling the transmission of the incident light incident into the second liquid crystal area 312. The second liquid crystal area 312 realizes the display of the picture in the non-transparent display area 12 through the conventional liquid crystal.

[0046] like Figure 3As shown, the first light source 360 ​​is disposed on one side of the liquid crystal panel 300 close to the first liquid crystal area 311, and is an organic light-emitting diode (OLED) light source. Since the organic light-emitting diode has the characteristics of full-color luminescence, it is used to provide a color light source for the first liquid crystal area 311.

[0047] The driving layer 320 is disposed below the liquid crystal layer 310 , and includes a first driving circuit 321 , a second driving circuit 322 , and a third driving circuit 323 .

[0048] The first driving circuit 321 corresponds to the first liquid crystal area 311, and can be one of the liquid crystal display driving circuits such as a Fringe-Field Switching (FFS) driving circuit, an In-Plain Switching (IPS) driving circuit, a Vertical Alignment Liquid Crystal (VA) driving circuit, a Twisted Nematic Liquid Crystal (TN) driving circuit, etc. The first driving circuit 321 is used to provide a driving signal to the first liquid crystal area 311, and drive the scattering liquid crystal filled in the first liquid crystal area 311 according to demand, change the liquid crystal molecule order, angle, transmittance and refractive index, so as to realize the picture display and transparent conversion of the transparent display area 11.

[0049] The second driving circuit 322 corresponds to the second liquid crystal area 312, and can be a thin film transistor (TFT) type driving circuit or other driving circuits. The second driving circuit 322 is used to provide a driving signal to the second liquid crystal area 312, drive the conventional liquid crystal filled in the second liquid crystal area 312, change the order of its liquid crystal molecules, and control the picture display of the non-transparent display area 12.

[0050] The third driving layer 323 corresponds to the first light source 360 ​​and is a field sequential driving circuit for providing a driving signal for the first light source 360 ​​to control the light emission of the organic light emitting diode.

[0051] In this embodiment, the liquid crystal panel 300 removes the structure of the polarizer in the prior art, and the first driving circuit 321 has a high aperture ratio, so light can easily pass through the first driving circuit 321 and enter the next layer structure.

[0052] like Figure 3As shown, the liquid crystal panel 300 further includes a first substrate 330, a second substrate 340 and a sealant layer 350. The first substrate 330 is disposed on a side of the driving layer 320 away from the liquid crystal layer 310. The second substrate 340 is disposed on a side of the liquid crystal layer 310 away from the driving layer 320. The sealant layer 350 is disposed at the edge of the first substrate 330 and the second substrate 340, and forms a sealed chamber with the first substrate 330 and the second substrate 340. The liquid crystal layer 310, the driving layer 320 and the first light source 360 ​​are located in the chamber. There is a gap between the sealant layer 350 and the liquid crystal layer 310, and the first light source 360 ​​is disposed in the gap. The chamber protects each device in the liquid crystal panel 300 in a closed space and isolates it from water and oxygen in the outside world, preventing water and oxygen from corroding each display device and extending the service life of the liquid crystal panel 300.

[0053] In the liquid crystal panel 300 of the transparent display area 11, the first light source 360 ​​emits a colored light source into the scattering liquid crystal of the first liquid crystal area 311 through the third driving circuit 323, and reaches the inside of the liquid crystal through reflection from the first substrate 330 and the second substrate 340. When a picture is required to be displayed, the first driving circuit 321 controls the rotation of the scattering liquid crystal to scatter the colored light, so that the display picture is vertically emitted from the first substrate 330. When transparency is required, the scattering liquid crystal is made transparent through the control of the first driving circuit 321 to obtain a light channel.

[0054] The backlight panel 100 has a first through hole 101, which corresponds to the transparent display area 11, and provides a lighting channel for the under-screen components such as the camera 2. The backlight panel 100 is composed of multiple layers of optical films, such as one or more of optical films such as a reflector, a light guide plate, a diffuser, and a light enhancement film. The backlight panel 100, through the cooperation of its multiple layers of optical films, improves the angular distribution of light, guides the scattering direction of light, evens out light, and concentrates light at a normal viewing angle without increasing the number of light sources, thereby reducing the loss of the light source and improving the axial brightness of the display panel 1.

[0055] like Figure 2As shown, a second light source 500 is provided on one side of the backlight plate 100 close to the second liquid crystal area 312. The second light source 500 is a light emitting diode (LED) light source, which provides light to the second liquid crystal area 312 through the backlight plate 100. In the liquid crystal display device 1000 (LCD), the liquid crystal panel 300 is a passive light-emitting element, which does not emit light itself, but is illuminated by the backlight module below it. Therefore, the second light source 500 and the backlight plate 100 constitute the backlight module to provide light to the second liquid crystal area 312.

[0056] like Figure 2 As shown, the display panel 1 further includes a first polarizer 200 and a second polarizer 400. The first polarizer 200 is between the backlight plate 100 and the liquid crystal panel 300, and has a second through hole 201, and the second through hole 201 corresponds to the transparent display area 11. The second polarizer 400 is arranged on a side of the liquid crystal panel 300 away from the first polarizer 200, and has a third through hole 401, and the third through hole 401 corresponds to the transparent display area 11. The second through hole 201 and the third through hole 401 provide a lighting channel for the under-screen components such as the camera 2. Polarizer (POL) is a full name for polarizer, which is used to control the polarization direction of a specific light beam. When natural light passes through the polarizer, the light with a vibration direction perpendicular to the transmission axis of the polarizer will be absorbed, and only the polarized light with a vibration direction parallel to the transmission axis of the polarizer will be transmitted. In the display panel 1, the first polarizer 200 and the second polarizer 400 are respectively attached to the two sides of the liquid crystal panel 300, the first polarizer 200 is used to convert the light beams generated by the backlight panel 100 and the second light source 500 into polarized light, and the second polarizer 400 is used to analyze the polarized light after being electrically modulated by the liquid crystal to generate light and dark contrast, thereby generating a display image.

[0057] A display device 1000 is also provided in an embodiment of the present invention, which is a liquid crystal display device and includes the display panel 1 described above, and a camera 2, wherein the camera 2 is disposed on a surface of the display panel 1 close to the backlight plate 100 and corresponds to the transparent display area 11. The size of the camera 2 can be adjusted according to the size of the transparent display area 11, further optimizing the space occupied by the camera 2. The display device 1000 has a full-screen display effect, and can be any product or component with a display function, such as a mobile phone, a tablet computer, a laptop computer, etc.

[0058] In the embodiment of the present invention, a display panel 1 and a display device 1000 are provided. The display panel 1 divides its display area 10 into a transparent display area 11 and a non-transparent display area 12. The non-transparent display area 12 is a conventional display area, using conventional liquid crystal display technology. The display technology used in the transparent display area 11 is a scattering liquid crystal display technology. When the camera 2 is turned on, the transparent display area 11 is in a transparent state, which can provide a lighting channel for the camera 2. When the camera 2 is turned off, the transparent display area 11 can display the picture normally. The display panel 1 and the display device 1000 in the embodiment of the present invention combine two liquid crystal display technologies, use the scattering liquid crystal display technology to realize the display and light transmission dual functions of the transparent display area 11 corresponding to the camera 2, eliminate the influence of the camera 2 on the display panel 1, thereby enabling the screen ratio of the display panel 1 to reach 100%, realizing a true full-screen display, improving the aesthetics of the display device 1000, and enhancing the user's experience.

[0059] In this embodiment, the transparent display area 11 is Figure 1 Zhongwei However, in other embodiments of the present invention, the transparent display area 11 can also be circular, oval, square, teardrop-shaped or other shapes, and its layered structure is similar to the display panel 1 and the display device 1000 in this embodiment, so it will not be described in detail here. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0060] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A display panel, characterized in that: The display area includes a transparent display area and a non-transparent display area surrounding the transparent display area; In the display area, the display panel further includes: A backlight plate having a first through hole, wherein the first through hole corresponds to the transparent display area; The liquid crystal panel is arranged on the backlight panel and comprises: A driving layer, comprising a first driving circuit, a second driving circuit and a third driving circuit; A liquid crystal layer, disposed on the driving layer, having a first liquid crystal region and a second liquid crystal region; the first liquid crystal region is filled with scattering liquid crystal; The first liquid crystal area corresponds to the transparent display area; The second liquid crystal area corresponds to the non-transparent display area; A first light source is disposed on a side of the liquid crystal panel close to the first liquid crystal area; wherein the first light source is used to provide a color light source for the first liquid crystal area; The first driving circuit corresponds to the first liquid crystal area and is used to provide a driving signal to the first liquid crystal area; The second driving circuit corresponds to the second liquid crystal area and is used to provide a driving signal to the second liquid crystal area; The third driving circuit corresponds to the first light source and is used to provide a driving signal for the first light source; A first substrate, disposed on a side of the driving layer away from the liquid crystal layer; A second substrate is disposed on a side of the liquid crystal layer away from the driving layer; A sealant layer is provided at the edges of the first substrate and the second substrate, and forms a sealed chamber with the first substrate and the second substrate, wherein the liquid crystal layer, the driving layer and the first light source are located in the sealed chamber; There is a gap between the sealant layer and the liquid crystal layer, and the first light source is arranged in the gap; the first light source reaches the inside of the liquid crystal through reflection of the first substrate and the second substrate.

2. The display panel according to claim 1, wherein: The first light source is an organic light emitting diode light source.

3. The display panel according to claim 1, wherein: In the display area, the display panel further includes: The second light source is arranged on a side of the backlight plate close to the second liquid crystal area.

4. The display panel according to claim 3, wherein: The second light source is a light emitting diode light source.

5. The display panel according to claim 1, wherein: In the display area, the display panel further includes: A first polarizer, disposed between the backlight plate and the liquid crystal panel; A second polarizer is disposed on a surface of the liquid crystal panel away from the first polarizer; The first polarizer has a second through hole, and the second through hole corresponds to the transparent display area; The second polarizer has a third through hole, and the third through hole corresponds to the transparent display area.

6. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-5.

7. The display device according to claim 6, wherein: It also includes a camera, which is arranged on a surface of the display panel close to the backlight plate and corresponds to the transparent display area.

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