Display panel and display device
By designing a structure consisting of a backlight layer, a color conversion layer, a driving layer, a light control layer, and a filter layer in a Micro LED display panel, the control of one light-emitting unit corresponding to multiple color light output units was achieved, solving the problem of low yield during the transfer process of Micro LED display panels and improving product yield and manufacturing efficiency.
Patent Information
- Application Number
- CN202511586867.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-01-13
AI Technical Summary
The low yield of existing Micro LED display panels during the transfer process leads to color decay and color shift issues in some sub-pixels, especially in full-color displays, where multiple large-scale transfers result in a high transfer failure rate.
A display panel structure is adopted, in which each light-emitting unit corresponds to multiple color light output units through the design of backlight layer, color conversion layer, driving layer, light control layer and filter layer. By using the control of light control unit and driving unit, the number of light-emitting units used is reduced, and the transmission or blocking of light is controlled by quantum dot conversion and electrophoretic particles to achieve color output of multiple sub-pixels.
It improves the yield of display panels, reduces color decay and color difference caused by unsuccessful configuration of light-emitting units in subpixels, simplifies the panel structure, and improves product yield and manufacturing efficiency.
Smart Images
Figure CN121325480A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display panel technology, and more particularly to a display panel and display device. Background Technology
[0002] Currently, Micro LED has been applied in some display products due to its advantages such as high color saturation, high resolution, and high brightness, including AR, VR, and high-end automotive displays. There are currently two main ways to achieve full color with Micro LED: one is through three mass transfers to transfer the three colors of the LED to the driver backplane; the other is by using quantum dot color conversion technology for blue, which only requires one mass transfer to transfer the blue Micro LED to the driver backplane.
[0003] The first method described above involves numerous mass transfers, leading to transfer failures of some light-emitting units and a decrease in product yield. While the second method requires only one mass transfer, the total number of light-emitting units transferred is equal to the number of different colored sub-pixels, meaning the total number transferred is not less than with the three-color transfer method. This is because each Micro LED corresponds to a color conversion region, allowing individual control of a sub-pixel's emission or non-emission. However, due to the large number of LEDs, the transfer yield still needs improvement.
[0004] Therefore, how to improve the transfer yield during the Micro LED transfer process and avoid color decay of some sub-pixels due to low yield, resulting in color shift, is an urgent problem to be solved. Summary of the Invention
[0005] In view of this, in order to solve some or all of the above-mentioned technical problems, this application provides a display panel and a display device.
[0006] In a first aspect, embodiments of this application provide a display panel, which is arranged in a preset stacking order as follows: a backlight layer, a color conversion layer, a driving layer, a light control layer, and a filter layer; the filter layer includes a first preset number of filter units, the light control layer includes a first preset number of light control units, the driving layer includes a first preset number of driving units, and the color conversion layer includes a first preset number of color light output units; each filter unit in the first preset number of filter units corresponds to a light control unit, a driving unit, and a color light output unit, and the corresponding filter unit, light control unit, and color light output unit are respectively... The unit is a projection overlap on the surface of the display panel; the backlight layer includes a second preset number of light-emitting units, each light-emitting unit corresponding to a third preset number of color light output units, emitting light to the third preset number of color light output units; a first preset number of color light output units are used to receive the light emitted by the corresponding light-emitting unit and emit light of a preset color to the corresponding light control unit; each of the first preset number of light control units is used, under the drive of the corresponding driving unit, to block the light received from the corresponding color light output unit, or to let the light pass through and incident on the corresponding filter unit.
[0007] In one possible implementation, the first preset number of color light output units includes a fourth preset number of first-type color light output units and a fifth preset number of second-type color light output units; the first-type color light output units contain quantum dots and are used to convert the light emitted by the backlight layer into light of a preset color; the second-type color light output units do not contain quantum dots and are used to directly transmit the light emitted by the backlight layer to the light control layer.
[0008] In one possible implementation, the color conversion layer further includes a quantum dot encapsulation layer, which is located between a first preset number of color light output units and the driving layer.
[0009] In one possible implementation, a first light-blocking structure is provided between any two adjacent color light output units in a first preset number of color light output units.
[0010] In one possible implementation, each of the first preset number of driving units includes a controlled switch, a pixel electrode, and a common electrode. The controlled switch is connected to the pixel electrode, and the pixel electrode and the common electrode extend into the light control layer. The controlled switch is used to receive an input control signal and, according to the control signal, generate an electric field or turn off the electric field between the pixel electrode and the common electrode.
[0011] In one possible implementation, the projection of the controlled switch onto the filter layer is located within a non-opening region included in the filter layer.
[0012] In one possible implementation, each of the first preset number of light control units includes electrophoretic particles, a first barrier wall, and a second barrier wall. The electrophoretic particles are located between the first barrier wall and the second barrier wall. A pixel electrode is disposed on the first barrier wall, and a common electrode is disposed on the second barrier wall. The electrophoretic particles are used to gather towards the first barrier wall or the second barrier wall when an electric field is generated between the pixel electrode and the common electrode, and to disperse between the first barrier wall and the second barrier wall when no electric field is generated between the pixel electrode and the common electrode.
[0013] In one possible implementation, the light control layer further includes an electrophoretic encapsulation layer located between the filter layer and the first preset number of light control units.
[0014] In one possible implementation, a second light-blocking structure is provided between any two filter units in the first preset number of filter units; the width of each filter unit in the first preset number of filter units is less than the distance between the corresponding first and second barrier walls, and the distance between the first boundary of each filter unit and the inner surface of the target barrier wall is a preset distance, wherein the target barrier wall is a barrier wall that attracts electrophoretic particles, and the first boundary is the boundary closest to the target barrier wall.
[0015] In one possible implementation, a third light-blocking structure is provided between any two adjacent light-emitting units in the second preset number of light-emitting units.
[0016] In a second aspect, embodiments of this application provide a display device, including: a display panel and a controller as described in the first aspect above, wherein the controller is connected to a driving unit included in the display panel.
[0017] The display panel and display device provided in this application establish a one-to-one correspondence between each filter unit in the filter layer, each light control unit in the light control layer, each driving unit in the driving layer, and each color output unit in the color conversion layer. The corresponding filter units, light control units, and color output units are projected onto the surface of the display panel, and each light-emitting unit in the backlight layer emits light to the multiple color output units included in the color conversion layer. Then, each light control unit, driven by its corresponding driving unit, controls whether light passes through it. This application embodiment achieves one light-emitting unit corresponding to multiple color output units, that is, one light-emitting unit corresponds to multiple sub-pixels of different colors on the display panel. The color output of each sub-pixel is controlled by the light control unit, eliminating the need to set a corresponding light-emitting unit for each sub-pixel separately. This reduces the number of light-emitting units used and the number of light-emitting units transferred in the panel manufacturing process, improving the yield of the display panel and reducing color attenuation and color difference problems caused by unsuccessful configuration of light-emitting units in sub-pixels. Attached Figure Description
[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0021] Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of this application; Figure 2 This is a schematic diagram of the structure of another display panel provided in an embodiment of this application; Figure 3A A schematic diagram illustrating the display of a single color of light by a pixel, provided in an embodiment of this application; Figure 3B A schematic diagram illustrating the display of full-color light by a single pixel, provided as an embodiment of this application; Figure 3C A schematic diagram showing a pixel in a dark state, provided for an embodiment of this application; Figure 4A This is a schematic diagram of the structure of one light-emitting unit corresponding to three sub-pixels provided in an embodiment of this application; Figure 4B This is a schematic diagram of the structure of one light-emitting unit corresponding to six sub-pixels provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.
[0022] Figure label: 10-Display panel; 11-Backlight layer; 111-Third light-blocking structure; 12-Color conversion layer; 121-Color light output unit; 122-Quantum dot encapsulation layer; 123-First light-blocking structure; 13-Drive layer; 131-Drive unit; 1311-Controlled switch; 1312-Pixel electrode; 1313-Common electrode; 132-Insulating layer; 133-Passivation layer; 14-Light control layer; 141-Light control unit; 1411-Electrophoretic particles; 1412-First barrier; 1413-Second barrier; 142-Electrophoretic encapsulation layer; 15-Filter layer; 151-Filter unit; 152-Second light-blocking structure; 50-Display device; 51-Controller; 52-Panel frame; 53-Power module; 54-Data receiving module. Detailed Implementation
[0023] Various exemplary embodiments of this application will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps set forth in these embodiments do not limit the scope of this application.
[0024] Those skilled in the art will understand that the terms "first" and "second" in the embodiments of this application are only used to distinguish different steps, devices or modules, and do not represent any specific technical meaning, nor do they indicate the logical order between them.
[0025] It should also be understood that in this embodiment, "multiple" can refer to two or more, and "at least one" can refer to one, two or more.
[0026] It should also be understood that any component, data or structure mentioned in the embodiments of this application can generally be understood as one or more unless explicitly defined or given contrary guidance in the context.
[0027] Furthermore, the term "and / or" in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.
[0028] It should also be understood that the description of the various embodiments in this application emphasizes the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, they will not be described in detail.
[0029] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the scope of this application and its application or use.
[0030] Techniques, circuits, and devices known to a person skilled in the art may not be discussed in detail, but where appropriate, such techniques, circuits, and devices should be considered part of the instruction manual.
[0031] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.
[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. To facilitate understanding of the embodiments of this application, the application will be described in detail below with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0033] Figure 1 This is a schematic diagram of the structure of a display panel 10 provided in an embodiment of this application. The display panel 10 specifically includes: a backlight layer 11, a color conversion layer 12, a driving layer 13, a light control layer 14, and a filter layer 15. Figure 1 This is a cross-sectional view of the display panel described above, with the cross-section perpendicular to the image display surface of the display panel. The layers included in the display panel 10 are arranged sequentially according to a preset stacking order, such as... Figure 1 The layers shown are arranged sequentially according to the direction of light propagation emitted by the backlight.
[0034] In this embodiment, the filter layer 15 includes a first preset number of filter units 151, the light control layer 14 includes a first preset number of light control units 141, the driving layer 13 includes a first preset number of driving units 131, and the color conversion layer 12 includes a first preset number of color light output units 121.
[0035] The aforementioned first preset quantity is the total number of sub-pixels of various colors included in the display panel. For example, if the display panel includes N / 3 pixels, and each pixel includes three sub-pixels: R (red), G (green), and B (blue), then the first preset quantity is N.
[0036] In this embodiment, each of the first preset number of filter units 151 corresponds to a light control unit, a driving unit and a color light output unit, and the corresponding filter units, light control units and color light output units are projected onto the surface of the display panel.
[0037] A pixel on a display panel typically includes three sub-pixels: R, G, and B. Therefore, a pixel can include three R, G, and B filter units. Each filter unit is used to filter the received light and output light of the corresponding color. For example... Figure 1 As shown, the color output units corresponding to the R, G, and B filter units are represented as T1, T2, and T3.
[0038] In this embodiment, the backlight layer 11 includes a second preset number of light-emitting units, each of which corresponds to a third preset number of color light output units and emits light to the third preset number of color light output units.
[0039] The second preset number is less than the first preset number, meaning each light-emitting unit corresponds to multiple sub-pixels. For example, if the first preset number is N, then the number of pixels is N / 3. The second preset number can be N / 3, N / 6, N / 9, etc., and correspondingly, the third preset number can be 3, 6, 9, etc., meaning one light-emitting unit can correspond to at least one pixel, and one light-emitting unit emits light to the corresponding at least one pixel. The light-emitting unit can be various types of light-emitting elements, such as Micro LEDs. Figure 1 As shown, one light-emitting unit in the backlight layer 11 corresponds to three color light output units (i.e., the third preset quantity is three), which is used to provide backlight for three sub-pixels.
[0040] In this embodiment, a first preset number of color light output units 121 are used to receive light emitted by the corresponding light-emitting unit and emit light of a preset color to the corresponding light control unit.
[0041] Specifically, a color light output unit may be doped with materials that alter the wavelength of incident light, thereby producing emitted light of a preset wavelength, i.e., a preset color. For example, the color light output unit may include red or green quantum dots, converting blue light from the backlight layer 11 into red or green light.
[0042] In this embodiment, each of the first preset number of light control units 141 is used to block the light received from the corresponding color light output unit or to allow the light to pass through and be incident on the corresponding filter unit under the drive of the corresponding driving unit.
[0043] like Figure 1As shown, each light control unit corresponds to a driving unit (represented by D in the figure), and the driving unit controls the light control unit. Specifically, the light control unit may contain a material capable of controlling the opening or closing of the light path. This material, under the influence of the electric field generated by the driving unit, allows incident light to pass through or blocks light transmission. The driving unit can receive driving signals from an external controller. Based on the driving signals, it can change the state of the light control unit, allowing light to pass through the light control unit and enter the corresponding filter unit, causing the filter unit to emit light of the corresponding color; or blocking light from passing through the light control unit, causing the filter unit to become dark. For example, the color conversion layer 12 can output polarized light. The light control unit may contain a crystal that can change the polarization state. When the driving unit applies an electric field to the corresponding light control unit, the crystal generates polarization, preventing polarized light from transmitting; when the driving unit does not apply an electric field to the corresponding light control unit, the crystal does not generate polarization, allowing polarized light to transmit.
[0044] The display panel provided in this application establishes a one-to-one correspondence between each filter unit in the filter layer, each light control unit in the light control layer, each driving unit in the driving layer, and each color output unit in the color conversion layer. The corresponding filter units, light control units, and color output units are projected onto the surface of the display panel, and each light-emitting unit in the backlight layer emits light to the multiple color output units included in the color conversion layer. Then, each light control unit, driven by its corresponding driving unit, controls whether light passes through it. This application embodiment achieves one light-emitting unit corresponding to multiple color output units, that is, one light-emitting unit corresponds to multiple sub-pixels of different colors on the display panel. The color output of each sub-pixel is controlled by the light control unit, eliminating the need to set a corresponding light-emitting unit for each sub-pixel separately. This reduces the number of light-emitting units used and the number of light-emitting units transferred in large quantities during panel production, improving the yield of the display panel and reducing color attenuation and color difference problems caused by unsuccessful configuration of light-emitting units in sub-pixels.
[0045] In some optional implementations of this embodiment, the first preset number of color light output units 121 includes a fourth preset number of first-type color light output units and a fifth preset number of second-type color light output units.
[0046] The first type of color light output unit contains quantum dots and is used to convert the light emitted from the backlight layer 11 into light of a preset color. The second type of color light output unit does not contain quantum dots and is used to directly transmit the light emitted from the backlight layer 11 to the light control layer 14.
[0047] As an example, if the first preset quantity is N, the display panel includes N / 3 pixels, and each pixel contains three sub-pixels, then the fourth preset quantity can be 2N / 3, and the fifth preset quantity can be N / 3. For example... Figure 1 As shown, for the three sub-pixels R, G, and B in a pixel, there are three color light output units T1, T2, and T3, respectively. T1 contains red quantum dots, T2 contains green quantum dots, and T3 does not contain any quantum dots. T1 and T2 are first-type color light output units, and T3 is a second-type color light output unit. T1 can convert incoming blue light into red light, T2 can convert incoming blue light into green light, and T3 is a transparent material that directly transmits blue light, thereby achieving the emission of red, green, and blue light into the light control layer 14.
[0048] This embodiment achieves the goal of providing colored light to multiple pixel sub-units contained in at least one pixel using the same blue light source by setting colored light output units containing quantum dots and colored light output units without quantum dots in the color conversion layer 12. This helps to simplify the panel structure, reduce manufacturing difficulty, and improve product yield.
[0049] In some optional implementations of this embodiment, such as Figure 2 As shown, the color conversion layer 12 also includes a quantum dot encapsulation layer 122, which is located between the first preset number of color light output units 121 and the driving layer 13.
[0050] The quantum dot encapsulation layer 122 can fully confine the quantum dots contained in the color conversion layer 12 within the color light output unit, thereby improving the stability of the color conversion layer 12 and preventing each color light output unit from emitting stray light.
[0051] In some optional implementations of this embodiment, such as Figure 2 As shown, a first light-blocking structure 123 is provided between any two adjacent color light output units in the first preset number of color light output units 121.
[0052] The first light-blocking structure 123 can prevent light emitted from the backlight layer 11 from passing through and avoid color light interference between adjacent color light output units, thereby helping to provide stable and pure color light.
[0053] In some optional implementations of this embodiment, such as Figure 2 As shown, each of the first preset number of driving units 131 includes a controlled switch 1311, a pixel electrode 1312, and a common electrode 1313. The controlled switch 1311 is connected to the pixel electrode 1312, and the pixel electrode 1312 and the common electrode 1313 extend into the light control layer 14.
[0054] like Figure 2 As shown, the pixel electrode 1312 and the common electrode 1313 extend into the light control layer 14, passing over the first barrier 1412 and the second barrier 1413, respectively.
[0055] The controlled switch 1311 is used to receive input control signals and, according to the control signals, generate or turn off an electric field between the pixel electrode 1312 and the common electrode 1313.
[0056] The aforementioned controlled switch 1311 can be a thin-film transistor (TFT), whose gate can receive externally input control signals. When the drain and source are turned on, an electric field can be generated between the pixel electrode 1312 and the common electrode 1313. This electric field can be applied to the corresponding light control unit, thereby controlling the light control unit to transmit or block light. Figure 2 As shown, the controlled switch 1311 is a TFT switch. An insulating layer 132 and a passivation layer 133 are disposed in the light control layer 14. The gate of the TFT switch is located in the insulating layer 132, and the source and drain are located in the passivation layer 133.
[0057] This embodiment achieves the control of the light transmission state of the light control unit by setting a controlled switch, pixel electrode, and common electrode, thereby flexibly selecting the pixel unit that needs to emit light and improving the convenience of light transmission control.
[0058] In some optional implementations of this embodiment, such as Figure 2 As shown, the projection of the controlled switch 1311 onto the filter layer 15 is located within the non-aperture area of the filter layer. The non-aperture area is the region between any two adjacent filter units in the filter layer. The controlled switch disposed in this region will not affect the light propagation path from the color conversion layer 12 into the filter unit, thereby helping to improve the aperture ratio of the display panel.
[0059] In some optional implementations of this embodiment, such as Figure 2 As shown, each of the first preset number of light control units 141 includes an electrophoretic particle 1411, a first barrier 1412, and a second barrier 1413. The electrophoretic particle 1411 is located between the first barrier 1412 and the second barrier 1413. A pixel electrode 1312 is provided on the first barrier 1412, and a common electrode 1313 is provided on the second barrier 1413.
[0060] When an electric field is generated between the pixel electrode 1312 and the common electrode 1313, the electrophoretic particles gather towards the first barrier 1412 or the second barrier 1413. When no electric field is generated between the pixel electrode 1312 and the common electrode 1313, the particles are dispersed between the first barrier 1412 and the second barrier 1413.
[0061] like Figure 2An electrophoresis cavity is formed between the first barrier 1412 and the second barrier 1413, which is filled with electrophoretic liquid and electrophoretic particles. Since no electric field is generated between the pixel electrode 1312 and the common electrode 1313, the electrophoretic particles are not affected by the electric field force and are evenly distributed between the first barrier 1412 and the second barrier 1413.
[0062] like Figure 3A As shown, this diagram illustrates a state where one sub-pixel of a pixel is transparent to light, while the remaining sub-pixels are opaque. When an electric field is generated between the pixel electrode 1312 and the common electrode 1313, the electrophoretic particles are attracted to one of the barriers by the electric field. The light emitted from the color light output unit T1 is not blocked by the electrophoretic particles, passes through the light control unit, and enters the corresponding filter unit R. The filter unit R transmits red light.
[0063] Each of the aforementioned first preset number of light control units 141 can be individually controlled, thereby allowing light to pass through or remain opaque to the filter units corresponding to each sub-pixel of a pixel. Further reference... Figure 3B It shows a schematic diagram of a pixel comprising three sub-pixels that are all transparent, i.e., displaying full-color light. Figure 3B In the example shown, the electrophoretic particles corresponding to the filter units R, G, and B are all affected by the electric field and gather towards the corresponding barrier. The light emitted from the three color light output units T1, T2, and T3 is not blocked by the electrophoretic particles, passes through the light control unit, and enters the filter units R, G, and B to emit full-color light.
[0064] Further reference Figure 3C It shows a schematic diagram of a pixel comprising three sub-pixels that are all opaque, i.e., a pixel is in a dark state. Figure 3C In the example shown, the electrophoretic particles corresponding to the filter units R, G, and B are not affected by the electric field and are uniformly distributed between the two opposing barriers. The light emitted from the three color light output units T1, T2, and T3 is blocked by the electrophoretic particles and cannot pass through the light control unit, thus making the pixel dark.
[0065] This embodiment sets electrophoretic particles in the light control unit, which can be moved under the control of the driving unit. This allows for flexible control over whether the light emitted by the color light output unit passes through the light control unit. Furthermore, the structure and control method of the electrophoretic particles are simple, which helps to improve the manufacturing efficiency of the panel.
[0066] In some optional implementations of this embodiment, such as Figure 2 As shown, the light control layer 14 also includes an electrophoretic encapsulation layer 142, which is located between the filter layer 15 and the first preset number of light control units 141.
[0067] The electrophoretic encapsulation layer 142 can fully confine the electrophoretic particles within the electrophoretic cavity formed by the two baffles, improving the stability of the movement of the electrophoretic particles under the action of the electric field, and thus more effectively controlling the transmission or blocking of light.
[0068] In some optional implementations of this embodiment, such as Figure 2 As shown, a second light-blocking structure 152 is provided between any two filter units in the first preset number of filter units 151. The second light-blocking structure can separate two adjacent filter units to prevent light mixing.
[0069] The width of each filter unit in the first preset number of filter units 151 is less than the distance between the corresponding first barrier 1412 and second barrier 1413, and the distance between the first boundary of each filter unit and the inner surface of the target barrier is a preset distance. In this context, the target barrier is the barrier that attracts electrophoretic particles, and the first boundary is the boundary closest to the target barrier. For example... Figure 2 As shown, the target barrier can be the first barrier 1412, and the inner surface of the first barrier 1412 is the surface that restricts the movement range of the electrophoretic particles. Figure 2 The ΔH shown is the preset distance. For example... Figure 3A and Figure 3B As shown, when there is an electric field between the first barrier 1412 and the second barrier 1413, the electrophoretic particles can gather within the range of ΔH, so that the gathered electrophoretic particles will not block the light from entering the filter unit.
[0070] This embodiment achieves the goal of gathering electrophoretic particles within the coverage area of the second light-blocking structure when an electric field is applied to the electrophoresis cavity by setting a second light-blocking structure between the filter units and covering a portion of the electrophoresis cavity. This avoids the electrophoretic particles affecting the light incident on the filter, thereby making the brightness of the light emitted from the filter more stable.
[0071] In some optional implementations of this embodiment, such as Figure 4A As shown, a third light-blocking structure 111 is provided between any two adjacent light-emitting units in the second preset number of light-emitting units.
[0072] Between adjacent third light-blocking structures, that is, the pixel range illuminated by a single light-emitting unit, typically one light-emitting unit can cover at least one pixel. Figure 4A The single light-emitting unit shown can illuminate three sub-pixels, or one pixel. The third light-blocking structure can limit the illumination range of each light-emitting unit, avoid light interference between pixels, and improve the light stability received by each filter unit.
[0073] In another embodiment, such as Figure 4BAs shown, a single light-emitting unit covers two pixels, meaning a single light-emitting unit illuminates six sub-pixels.
[0074] Figure 5 This is a schematic diagram of the structure of a display device 50 provided in an embodiment of this application, as shown below. Figure 5 As shown, the display device includes a display panel 10 as described in the above embodiments and a controller 51, wherein the controller is connected to the driving units included in the display panel. That is, the controller controls the state of each driving unit, thereby controlling whether each light control unit transmits or blocks light.
[0075] In addition, the display device may also include a panel frame 52, a power module 53, and a data receiving module 54; The display panel 10 is mounted on the panel frame 51. The power supply terminal of the display panel 100 is connected to the power module 53, and the signal receiving terminal of the display panel 10 is connected to the data receiving module 54.
[0076] The power module 53 can provide the power required for the display panel 10 to operate, and the data receiving module 54 can receive the input data. The display panel 10 drives the corresponding pixels to display the corresponding colors according to the received data.
[0077] In addition, the display device Figure 5 In addition to the components shown, it may also include a memory for storing data and programs, a processor for running applications, a data transfer bus, and various data interfaces (such as network interfaces and user interfaces).
[0078] The display device provided in this application reduces the number of light-emitting units used and the number of light-emitting units transferred in the panel production process by applying the above-mentioned display panel, thereby improving the yield of the display device and reducing the color decay and display color difference problems caused by the failure of sub-pixels to configure light-emitting units.
[0079] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can implement the described functions using different devices for each specific application, but such implementation should not be considered beyond the scope of this application.
[0080] The steps of the apparatus or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
[0081] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also mean including the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.
[0082] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily 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 this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.
Claims
1. A display panel, characterized in that, The display panel is arranged in a preset layering order as follows: a backlight layer, a color conversion layer, a driving layer, a light control layer, and a filter layer. The filter layer includes a first preset number of filter units, the light control layer includes a first preset number of light control units, the driving layer includes a first preset number of driving units, and the color conversion layer includes a first preset number of color light output units. Each of the first preset number of filter units corresponds to a light control unit, a driving unit, and a color light output unit, and the corresponding filter unit, light control unit, and color light output unit have overlapping projections on the surface of the display panel. The backlight layer includes a second preset number of light-emitting units, and each light-emitting unit corresponds to a third preset number of color light output units, emitting light to the third preset number of color light output units; The first preset number of color light output units are used to receive light emitted by the corresponding light-emitting unit and emit light of a preset color to the corresponding light control unit; Each of the first preset number of light control units is used, under the drive of the corresponding driving unit, to block the light received from the corresponding color light output unit, or to let the light pass through and be incident on the corresponding filter unit.
2. The display panel according to claim 1, characterized in that, The first preset number of color light output units includes a fourth preset number of first-type color light output units and a fifth preset number of second-type color light output units; The first type of color light output unit includes quantum dots, which are used to convert the light emitted by the backlight layer into light of a preset color; The second type of color light output unit does not contain quantum dots and is used to directly transmit the light emitted by the backlight layer to the light control layer.
3. The display panel according to claim 2, characterized in that, The color conversion layer further includes a quantum dot encapsulation layer, which is located between the first preset number of color light output units and the driving layer.
4. The display panel according to claim 1, characterized in that, A first light-blocking structure is provided between any two adjacent color light output units in the first preset number of color light output units.
5. The display panel according to claim 1, characterized in that, Each of the first preset number of driving units includes a controlled switch, a pixel electrode, and a common electrode. The controlled switch is connected to the pixel electrode, and the pixel electrode and the common electrode extend into the light control layer. The controlled switch is used to receive input control signals and, according to the control signals, generate or deactivate an electric field between the pixel electrode and the common electrode.
6. The display panel according to claim 5, characterized in that, The projection of the controlled switch onto the filter layer is located within the non-opening area included in the filter layer.
7. The display panel according to claim 5, characterized in that, Each of the first preset number of light control units includes an electrophoretic particle, a first barrier wall, and a second barrier wall. The electrophoretic particle is located between the first barrier wall and the second barrier wall. The pixel electrode is disposed on the first barrier wall, and the common electrode is disposed on the second barrier wall. The electrophoretic particles are used to gather towards the first or second barrier wall when an electric field is generated between the pixel electrode and the common electrode, and to disperse between the first and second barrier walls when no electric field is generated between the pixel electrode and the common electrode.
8. The display panel according to claim 7, characterized in that, A second light-blocking structure is provided between any two filter units in the first preset number of filter units; The width of each filter unit in the first preset number of filter units is less than the distance between the corresponding first and second baffles, and the distance between the first boundary of each filter unit and the inner surface of the target baffle is a preset distance, wherein the target baffle is a baffle that attracts the electrophoretic particles, and the first boundary is the boundary closest to the target baffle.
9. The display panel according to claim 1, characterized in that, A third light-blocking structure is provided between any two adjacent light-emitting units in the second preset number of light-emitting units.
10. A display device, characterized in that, include: The display panel and controller as described in any one of claims 1-9, wherein the controller is connected to the driving unit included in the display panel.