CN219958034U - Display device - Google Patents

Abstract

The utility model is applicable to the technical field of display, and provides a display device, wherein the display device comprises a display panel and a light-emitting structure, and the display panel is arranged on the light-emitting side of the light-emitting structure; a display panel including a plurality of pixel units arranged in an array; the light emitting structure comprises a first electrode layer, a first light emitting layer and a second electrode layer which are sequentially stacked and arranged on a substrate, wherein the first light emitting layer comprises a plurality of discrete light emitting units, and each light emitting unit is configured to emit light signals to at least one pixel unit under the control of the first electrode layer and the second electrode layer. According to the utility model, the light emitting unit array is arranged on the substrate, and emits light signals after being electrified, so that the image display function is realized by matching with the panel, and the overall thickness and weight of the display device can be greatly reduced, the power consumption is lower, and the brightness is higher.

Description

Display device

Technical Field

The utility model belongs to the technical field of display, and particularly relates to a display device.

Background

With the continuous development of display technology, various types of display devices are layered endlessly, which brings great convenience to the production and life of people, such as liquid crystal display devices (Liquid Crystal Display, LCDs).

However, in the conventional lcd device, a backlight module is usually required to be turned on for displaying, and the backlight module generally includes a light guide plate, an optical film, and other structures, which results in a larger thickness, a larger weight, and the like of the backlight module.

Accordingly, there is a need to provide a novel display device to solve the above-mentioned problems.

Disclosure of Invention

In view of this, the embodiment of the utility model provides a display device, which includes a plurality of discrete light emitting units through a first light emitting layer, that is, a layer of light emitting unit array is disposed on a substrate, and the light emitting unit array emits light signals after being electrified, so as to realize an image display function in cooperation with a panel. Therefore, the backlight module can be replaced by the light-emitting unit, and the light-emitting unit can emit light without the assistance of an additional light guide plate and the like, and the thickness of the film is very small, so that the overall thickness and the weight of the display device can be greatly reduced; meanwhile, no film layers such as an optical film and the like consume luminous flux, so that the power consumption of the display device is lower, the brightness is higher, and the contrast ratio is obviously improved; and the light emitting units can respectively control the corresponding pixel units, so that the application range is wide.

A first aspect of an embodiment of the present utility model provides a display device, including a display panel and a light emitting structure, where the display panel is disposed on a light emitting side of the light emitting structure;

the display panel comprises a plurality of pixel units which are arranged in an array;

the light emitting structure comprises a substrate, and a first electrode layer, a first light emitting layer and a second electrode layer which are sequentially stacked on the substrate, wherein the first light emitting layer comprises a plurality of discrete light emitting units, and each light emitting unit is configured to emit light signals to at least one pixel unit under the control of the first electrode layer and the second electrode layer.

In one embodiment, the first electrode layer includes a plurality of discrete first electrodes, and the second electrode layer includes a plurality of discrete second electrodes, and a front projection of a structure formed by each first electrode, each light emitting unit, and each second electrode on the substrate coincides with a front projection of one pixel unit on the substrate;

each of the light emitting units is configured to emit the light signal to one of the pixel units under control of the first electrode and the second electrode.

In one embodiment, the pixel unit includes a plurality of subpixels of different colors;

each of the light emitting units is configured to emit the same light signal to a plurality of the subpixels different in color under control of the first electrode and the second electrode.

In one embodiment, the pixel unit includes a plurality of sub-pixels having different colors, and each of the light emitting units includes a plurality of discrete light emitting parts;

each of the light emitting sections is configured to emit an optical signal to one of the sub-pixels under control of the first electrode and the second electrode.

In one embodiment, the first electrode layer includes a plurality of discrete first electrodes, the second electrode layer includes a plurality of discrete second electrodes, and the orthographic projection of the structure formed by each first electrode, each light emitting unit and each second electrode on the substrate coincides with the orthographic projection of a plurality of pixel units on the substrate;

each of the light emitting units is configured to emit the light signal to a plurality of the pixel units under control of the first electrode and the second electrode.

In one embodiment, the light emitting structure further includes a second light emitting layer configured to receive external light and emit a light signal to at least one of the pixel units.

In one embodiment, the second light emitting layer includes a photoelectric conversion material layer disposed on a side of the substrate remote from the first light emitting layer.

In one embodiment, the light emitting structure further includes a color conversion layer disposed on a side of the first light emitting layer remote from the substrate.

In one embodiment, the light emitting structure further includes a scattering layer disposed on a side of the first light emitting layer remote from the substrate;

the scattering layer is configured to scatter the light signal emitted by the first light emitting layer.

In one embodiment, the light emitting structure further includes a black protection layer disposed between the substrate and the first light emitting layer and surrounding the light emitting structure.

In one embodiment, the light emitting structure further includes a lens layer disposed on a side of the first light emitting layer remote from the substrate;

the lens layer is configured to diffuse the optical signal emitted by the first light emitting layer.

The display device provided by the first aspect of the embodiment of the utility model comprises a display panel and a light emitting structure, wherein the display panel is arranged on the light emitting side of the light emitting structure, the display panel comprises a plurality of pixel units which are arranged in an array, the light emitting structure comprises a first electrode, a first light emitting layer and a second electrode which are sequentially stacked and arranged on a substrate, the first light emitting layer comprises a plurality of discrete light emitting units, and each light emitting unit is configured to emit light signals to at least one pixel unit under the control of the first electrode and the second electrode. Therefore, the first light-emitting layer comprises a plurality of discrete light-emitting units, namely, a layer of light-emitting unit array is generated on the substrate, and the light-emitting unit array emits light signals after being electrified, so that the image display function is realized by matching with the panel. Therefore, the backlight module can be replaced by the light-emitting unit array, and the light-emitting unit array can emit light without the assistance of an additional light guide plate and the like, and the thickness of the film is very small, so that the overall thickness and the weight of the display device can be greatly reduced; meanwhile, no film layers such as an optical film and the like consume luminous flux, so that the power consumption of the display device is lower, the brightness is higher, and the contrast ratio is obviously improved; and the light emitting units can respectively control the corresponding pixel units, so that the application range is wide.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a first structure of a display device according to a first embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a display panel according to a first embodiment of the present utility model;

fig. 3 is a schematic diagram of a second structure of a display device according to a first embodiment of the present utility model;

fig. 4 is a schematic diagram of a third structure of a display device according to a first embodiment of the present utility model;

fig. 5 is a schematic diagram of a fourth structure of a display device according to a first embodiment of the present utility model;

fig. 6 is a schematic diagram of a fifth structure of a display device according to a first embodiment of the present utility model;

fig. 7 is a schematic diagram of a sixth structure of a display device according to a first embodiment of the present utility model.

Reference numerals:

1-display panel, 2-light emitting structure, 3-pixel unit, 4-substrate, 5-first electrode, 6-second electrode, 7-light emitting unit, 8-array substrate, 81-second substrate, 82-third electrode layer, 83-first alignment layer, 9-color film substrate, 91-third substrate, 93-second insulating layer, 94-fourth electrode layer, 95-second alignment layer, 921-black matrix, 9221-R color filter, 9222-G color filter, 9223-B color filter, 10-liquid crystal display panel, 71-light emitting section, 72-second protective layer, 101-gate line, 102-data line, 103-gate driver, 104-source driver, LC-liquid crystal, 11-first polarizing layer, 12-second polarizing layer, 131-columnar spacer, 14-second light emitting layer, 15-color conversion layer, 16-scattering layer, 17-black light, 18-first protective layer, L-exit light, M-first driving unit; 19-a lens layer; 20-a third protective layer; l1-light emitted from the light-emitting part.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution of an embodiment of the present utility model will be clearly described below with reference to the accompanying drawings in the embodiment of the present utility model, and it is apparent that the described embodiment is a part of the embodiment of the present utility model, but not all the embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

The term "comprising" in the description of the utility model and the claims and in the above figures and any variants thereof is intended to cover a non-exclusive inclusion. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include additional steps or elements not listed or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for distinguishing between different objects and not for describing a particular sequential order. The term "plurality" means "at least two". The term "at least one" means "one or more".

Example 1

As shown in fig. 1 to 4, an embodiment of the present utility model provides a display device including a display panel 1 and a light emitting structure 2, the display panel 1 being disposed on a light emitting side of the light emitting structure 2.

The display panel 1 includes a plurality of pixel units 3 arranged in an array.

The light emitting structure 2 comprises a first electrode layer, a first light emitting layer and a second electrode layer, which are sequentially stacked on the substrate 4, the first light emitting layer comprising a plurality of discrete light emitting units 7, each light emitting unit 7 being configured to emit light signals to at least one pixel unit 3 under the control of the first electrode layer and the second electrode layer.

The type of the display panel is not particularly limited, and may be exemplified by a rigid display panel, and the type may be a Twisted Nematic (TN) type, a vertical alignment (Vertical Alignment, VA) type, an In-Plane Switching (IPS) type, an advanced super-dimensional field Switching (Advanced Super Dimension Switch, ADS) type, or the like liquid crystal display panel, which may be specifically determined according to practical requirements.

The display panel is disposed on the light emitting side of the light emitting structure, and the liquid crystal display panel may include an array substrate and a color film substrate, so that the light generated from the light emitting structure is emitted from the color film substrate through the array substrate, one surface of the color film substrate from which the light is emitted is the light emitting surface of the display panel, as shown in fig. 1, and L is the emitted light. Therefore, the side of the light emitting structure, which emits light to the liquid crystal display panel, is the light emitting side of the light emitting structure.

The pixel unit is not particularly limited herein, and may include a plurality of sub-pixels, as an example. Specifically, the colors of the plurality of sub-pixels may be the same; alternatively, the colors of the plurality of subpixels may be different; alternatively, the colors of the plurality of sub-pixels may be partially identical. When the colors of the plurality of sub-pixels are different, the pixel unit may include three sub-pixels of the red sub-pixel, the green sub-pixel, and the blue sub-pixel at the same time, and of course, may include only one sub-pixel, for example: only a plurality of red sub-pixels, or only a plurality of green sub-pixels, or only a plurality of blue sub-pixels are included, which may be specifically determined according to actual requirements. The area of the pixel unit and the like may be determined according to the size of the panel and the like. Fig. 3 and 4 illustrate examples in which the color filter layer includes a color filter including a Red (Red, R) color filter 9221, a Green (G) color filter 9222, and a Blue (B) color filter 9223, and three sub-pixels of Red, green, and Blue sub-pixels may be configured.

As shown in fig. 2, the gate lines 101 and the data lines 102 arranged in the OX direction and the OY direction define a plurality of regions, each region is provided with one pixel unit 3, each pixel unit 3 is connected to the gate line 101 and the data line 102 through the first driving unit M, and all the gate lines 101 are connected to the gate driver 103 and all the data lines 102 are connected to the source driver 104. By way of example, the driving unit may include a thin film transistor (Thin Film Transistor, TFT) or the like, the gate driver 103 may include a gate integrated circuit (Integrated Circuit, IC) or the like, and the source driver 104 may include a center control board (Timer Control Register, tcon) or the like. The gate driver 103 may control the first driving unit M to be turned on row by row, and the source driver 104 may input an electrical signal to the data line 102 to control at least the operation of the pixel units 3 of each row.

The structure of the substrate is not particularly limited, and the first electrode and the like may be directly provided on the substrate, for example; alternatively, the substrate may include a first substrate, and the first electrode or the like is directly provided on the first substrate. The material of the first substrate is not particularly limited, and may include a rigid material such as: glass; alternatively, flexible materials may also be included, such as: polyimide (PI).

The first electrode layer is not particularly limited herein, and the first electrode layer may include a plurality of discrete first electrodes by way of example; alternatively, the first electrode layer may be provided entirely. Fig. 3 and 4 illustrate an example in which the first electrode layer includes a plurality of discrete first electrodes 5. The first electrode is not particularly limited, and may be an Anode (Anode), for example. The anode may be a transparent electrode formed of a transparent conductive film such as indium tin oxide (Indium Tin Oxides, ITO) or indium zinc oxide (Indium Zinc Oxide, IZO), and may have light transmittance, and may function as an electrode for injecting holes into the first light-emitting layer. The manufacturing process of the anode is not particularly limited, and for example, a glass plate with indium tin oxide may be ultrasonically treated in deionized water and then dried at 100 ℃ to obtain the anode.

The second electrode layer is not particularly limited herein, and the second electrode layer may include a plurality of discrete second electrodes, by way of example; alternatively, the second electrode layer may be provided entirely. Fig. 3 and 4 illustrate an example in which the second electrode layer includes a plurality of discrete second electrodes 6. The second electrode is not particularly limited, and the second electrode may be a Cathode (Cathode), for example. The cathode may be a metal, for example: the semitransparent electrode formed of any one of magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead, or an alloy thereof may be a transparent electrode formed of a transparent conductive film such as indium tin oxide or indium zinc oxide, and may have light transmittance, and the cathode may function as an electrode for injecting electrons into the first light-emitting layer.

The first light-emitting layer may be an electroluminescent layer, and the electroluminescent layer may emit light under the control of the first electrode and the second electrode, specifically may emit light under the control of a voltage difference after being electrified.

Here, the first light emitting unit is not particularly limited, and as an example, the material of the first light emitting unit may be an organic light emitting material; alternatively, the material of the first light emitting unit may be an inorganic light emitting material. The first light emitting unit may be realized by any one of plating etching (e.g., evaporation), printing, homogeneous deposition, vapor phase synthesis, etc., so that various choices are available while costs can be reduced.

Among the above-described plurality of discrete first light emitting units, a first protective layer may be provided between adjacent light emitting units, and a material of the protective layer may include silicon oxide (SiO), silicon nitride (SiN), silicon oxynitride (SiON), and the like, as an example, without being particularly limited.

It should be noted that, in order to improve the light emitting efficiency, the light emitting structure may further include an electron transport layer and a hole transport layer located at both sides of the first light emitting layer; in order to further improve the injection efficiency of electron holes, the light emitting structure may further include an electron injection layer located at a side of the electron transport layer remote from the first light emitting layer, and a hole injection layer located at a side of the hole transport layer remote from the first light emitting layer.

Each of the light emitting units configured to emit light signals to at least one pixel unit under the control of the first electrode and the second electrode means that: each of the light emitting units is configured to emit light when the first electrode and the second electrode are energized, and to emit light signals to one pixel unit; alternatively, each of the light emitting units is configured to emit light when the first electrode and the second electrode are energized, and to emit light signals to the plurality of pixel units, which is not particularly limited herein. By providing a first driving layer between the substrate and the first electrode, the first driving layer comprises a plurality of second driving units, which may for example comprise thin film transistors, which may be polysilicon transistors, for example: a Low Temperature Polysilicon (LTPS) transistor, etc., or the thin film transistor may also be an oxide transistor, for example: indium gallium zinc oxide (Indium Gallium Zinc Oxide, IGZO) transistors, etc., are not particularly limited herein, but of course, the first driving layer may also include other film layers. Each light emitting unit can be controlled to emit light signals to the corresponding pixel units through the second driving unit, so that different control is realized, and the application scenes are more; and each light-emitting unit can be controlled by the second driving unit to emit light signals to the corresponding pixel unit, so that the corresponding second driving unit is controlled to control the light-emitting unit to light when the pixel unit needs to light, and the light-emitting unit can not light under the state of screen extinction or shutdown, and the dark state light leakage problem can not exist.

The specific structure of the panel will be described below with reference to a liquid crystal display panel.

As shown in fig. 3 and 4, the liquid crystal display panel 10 may include an array substrate 8, a color film substrate 9, and a liquid crystal layer between the array substrate 8 and the color film substrate 9, which are disposed opposite to each other. Wherein, the array substrate 8 may include a second substrate 81, and a third electrode layer 82 and a first alignment layer 83 sequentially stacked on the second substrate 81; the color film substrate 9 may include a third substrate 91, and a color filter layer, a second insulating layer 93, a fourth electrode layer 94, and a second alignment layer 95 sequentially stacked on the third substrate 91. The liquid crystal layer may include liquid crystal LC. In addition, the liquid crystal display panel 10 may further include a first polarizing layer 11 disposed on a side of the second substrate 81 remote from the liquid crystal LC, a second polarizing layer 12 disposed on a side of the third substrate 91 remote from the liquid crystal LC, and a support layer disposed between the array substrate 8 and the color film substrate 9. Of course, the liquid crystal display panel may further include other film layers, for example: and a second driving layer disposed between the second substrate and the third electrode layer, the second driving layer including a plurality of first driving units and the like, and is not particularly limited herein.

Specifically, the materials of the second substrate and the third substrate may include rigid materials, for example: glass. The third electrode layer and the fourth electrode layer may be indium tin oxide electrode layers; the first alignment layer and the second alignment layer may be polyimide alignment layers; the first insulating layer and the second insulating layer may be silicon nitride layers. The color filter layer may include a black matrix and a color filter, the color filter may include an R color filter, a G color filter, and a B color filter, each of the color filters is located in the black matrix, and the black matrix may be a black resin layer. The first polarizing unit and the second polarizing unit may be polarizers. The support layer may include a Post Spacer (PS), a Ball Spacer (BS), and the like. The second driving layer may include a thin film transistor, which may be a polysilicon transistor, for example: low temperature polysilicon transistors, etc., or the thin film transistor may also be an oxide transistor, such as: indium gallium zinc oxide transistors, etc., are not particularly limited herein, although the second driving layer may include other film layers. Fig. 3 and 4 illustrate an example in which the color filter layer includes a black matrix 921, an R color filter 9221, a G color filter 9222, and a B color filter 9223, and the support layer includes two columnar spacers 131.

The third electrode layer, the fourth electrode layer, the second insulating layer, the color filter layer and other film layers can be manufactured through a composition process, wherein the composition process refers to a process of forming a required layer structure through one exposure, and the one-time composition process comprises processes of masking, exposure, development, etching, stripping and the like.

The foregoing merely describes matters related to the utility model, and the remaining structures can be obtained by referring to the related art, which will not be described in detail herein.

Display technology is diversified with the progress of technology. In terms of large-sized products, organic light emitting diode (Organic Light Emitting Diode, OLED) display devices have problems of low yield and the like, and are limited in application, but liquid crystal display devices have many applications. However, in the conventional lcd device, a light emitting diode (Light Emitting Diode, LED) backlight module is generally required to provide a light source, and the LED backlight module generally includes a LED light source, a light guide plate, an optical film, and other structures, which results in a larger thickness and a larger weight of the backlight module, and the thickness of the lcd device after the lcd panel and the LED backlight module are attached is much larger than that of the OLED display device, so that the user experience is worse in the trend of the current lcd device becoming ultrathin.

In order to solve the above-mentioned problems, an embodiment of the present utility model provides a display device, which includes a display panel and a light emitting structure, where the display panel is disposed on a light emitting side of the light emitting structure and includes a plurality of pixel units arranged in an array, the light emitting structure includes a first electrode, a first light emitting layer, and a second electrode sequentially stacked on a substrate, and the first light emitting layer includes a plurality of discrete light emitting units, that is, a layer of light emitting unit array is generated on the substrate, and the light emitting unit array emits light signals after being electrified, and the display device cooperates with the panel to implement an image display function. Therefore, the backlight module can be replaced by the light-emitting unit array, and the light-emitting unit array can emit light without the assistance of an additional light guide plate and the like, and the thickness of the film is very small, so that the whole thickness of the display device is greatly reduced (for example, the whole thickness of the display device is smaller than 2 mm), and the weight of the display device is greatly reduced; meanwhile, no film layers such as an optical film and the like consume luminous flux, so that the power consumption of the display device is lower, the brightness is higher, and the contrast ratio can reach 1000000: more than 1; and the light-emitting unit arrays can respectively control the corresponding pixel units, so that the application range is wide.

In one embodiment, as shown in fig. 3, the first electrode layer comprises a plurality of discrete first electrodes 5, the second electrode layer comprises a plurality of discrete second electrodes 6, each first electrode 5, each light emitting unit 7 and each second electrode 6 forming a structure that coincides with the front projection E1 of one pixel unit on the substrate 4 on the front projection E2 of the substrate 4, each light emitting unit 7 being configured to emit an optical signal to one pixel unit under control of the first electrode 5 and the second electrode 6.

The pixel unit is not particularly limited herein, and may include a plurality of sub-pixels, as an example. Specifically, the colors of the plurality of sub-pixels may be the same; alternatively, the colors of the plurality of subpixels may be different; alternatively, the colors of the plurality of sub-pixels may be partially identical. When the colors of the plurality of sub-pixels are different, the pixel unit may include three sub-pixels of the red sub-pixel, the green sub-pixel, and the blue sub-pixel at the same time, and of course, may include only one sub-pixel, for example: only a plurality of red sub-pixels, or only a plurality of green sub-pixels, or only a plurality of blue sub-pixels are included, which may be specifically determined according to actual requirements.

Each of the above-described light emitting units emits a light signal to one pixel unit, and the color of the light converted by the light signal may be determined according to each pixel unit, and for example, when each pixel unit includes a plurality of sub-pixels having different colors, the color of the light converted by the light signal may be white.

According to the display device provided by the embodiment of the utility model, each light emitting unit is configured to emit light signals to one pixel unit after being electrified, and the display device can realize image display by combining the panel; meanwhile, as each pixel unit can be controlled respectively, more applications can be realized, and the method is simple and easy to realize.

In one embodiment, the pixel unit comprises a plurality of sub-pixels of different colors, each light emitting unit being configured to emit the same light signal to the plurality of sub-pixels of different colors under control of the first electrode and the second electrode.

In fig. 3, the R color filter 9221, the G color filter 9222, and the B color filter 9223 form a red sub-pixel, a green sub-pixel, and a blue sub-pixel, that is, the pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel for illustration, where each light emitting unit may emit the same light signal to a plurality of sub-pixels with different colors, and the color of the light converted by the light signal may be white, and the white light is emitted to the red sub-pixel, the green sub-pixel, and the blue sub-pixel in the pixel unit, so as to realize display.

According to the display device provided by the embodiment of the utility model, each light-emitting unit is configured to emit the same light signal to one pixel unit after being electrified, at this time, when the pixel unit comprises a plurality of sub-pixels with different colors, each light-emitting unit emits white light after being electrified, and the display device can realize image display by combining with a panel; meanwhile, as each pixel unit can be controlled respectively, more applications can be realized, and the method is simple and easy to realize.

In one embodiment, as shown in fig. 5, the pixel unit 3 comprises a plurality of sub-pixels of different colors, each light emitting unit comprising a plurality of discrete light emitting parts 71, each light emitting part 71 being configured to emit a light signal to one sub-pixel under the control of the first electrode 5 and the second electrode 6.

Among the above-described plurality of discrete light emitting portions, a second protective layer may be provided between adjacent light emitting portions, and a material of the second protective layer may include, for example, silicon oxide (SiO), silicon nitride (SiN), silicon oxynitride (SiON), or the like, without being particularly limited. Fig. 5 illustrates that a second passivation layer 72 is disposed between adjacent light emitting portions 71.

Each of the light emitting sections emits a light signal to one of the sub-pixels, and the color of the light converted by the light signal can be determined based on the color of the sub-pixel corresponding to the light emitting section. For example, when the pixel unit includes a red sub-pixel, a green sub-pixel, and a blue sub-pixel, each light emitting unit may be configured to include three separate light emitting portions, that is, a first light emitting portion that emits light converted from a light signal to the red sub-pixel may be red, a second light emitting portion that emits light converted from a light signal to the green sub-pixel may be green, and a third light emitting portion that emits light converted from a light signal to the blue sub-pixel may be blue, that is, the first light emitting portion may provide red light to the red sub-pixel after being energized, the second light emitting portion may provide green light to the green sub-pixel after being energized, and the third light emitting portion may provide blue light to the blue sub-pixel after being energized, so that the display panel displays.

The display device provided by the embodiment of the utility model divides one light emitting unit into a plurality of discrete light emitting parts, and each light emitting part is arranged corresponding to one sub-pixel in one pixel unit. Each light emitting part is configured to emit light after being electrified and emit light signals to one sub-pixel, so that each sub-pixel can be more conveniently and independently controlled when the colors of the sub-pixels are different, and image display can be realized by combining the panel; meanwhile, as each sub-pixel in each pixel unit can be controlled respectively, more applications can be realized, and the method is simple and easy to realize.

In one embodiment, referring to fig. 6, the first electrode layer comprises a plurality of discrete first electrodes 5, the second electrode layer comprises a plurality of discrete second electrodes 6, each first electrode 5, each light emitting unit 7 and each second electrode 6 forming a structure that coincides with the front projection E3 of the plurality of pixel units 3 on the substrate with the front projection E4 of the plurality of pixel units 3 on the substrate, each light emitting unit 7 being configured to emit light signals to the plurality of pixel units 3 under control of the first electrodes 5 and the second electrodes 6.

Fig. 6 is a diagram illustrating an example in which each light emitting unit 7 is configured to emit light signals to two pixel units 3 when energized, and each light emitting unit 7 emits the same light signals to two pixel units 3 when energized.

According to the display device provided by the embodiment of the utility model, each light-emitting unit is arranged corresponding to a plurality of pixel units, and is configured to emit light signals to a plurality of sub-pixels after being electrified, so that image display can be realized by combining the panel; meanwhile, the light-emitting unit is easier to manufacture, the requirement on the manufacturing process is lower, and the display device is higher in contrast ratio under the condition that the product yield is higher can be guaranteed.

In one embodiment, as shown in fig. 4-6, the light emitting structure 2 further comprises a second light emitting layer 14, the second light emitting layer 14 being configured to receive ambient light and to emit light signals to the at least one pixel unit 3.

The second light-emitting layer is not particularly limited, and may be a single-layer structure; alternatively, the second light emitting layer may have a multilayer structure.

Here, the position of the second light emitting layer is not particularly limited, and the second light emitting layer 14 may be disposed on a side of the substrate 4 away from the first light emitting layer as shown in fig. 4 to 6; alternatively, the second light emitting layer may be disposed between the substrate and the first light emitting layer; alternatively, the second light emitting layer may be disposed on a side of the first light emitting layer away from the substrate.

The second light emitting layer is configured to receive external light and emit a light signal to at least one pixel unit, which means that: the second light emitting layer is configured to receive external light and can emit light signals to one pixel unit; alternatively, the second light emitting layer is configured to receive external light and may emit light signals to the plurality of pixel units, which is not particularly limited herein.

It should be noted that, the optical signal emitted by the first light emitting layer to the at least one pixel unit after being electrified may be the same as or different from the optical signal emitted by the second light emitting layer to the at least one pixel unit after being electrified, which is not specifically limited herein. For example, the color of the light converted by the light signal emitted by the first light emitting layer to the at least one pixel unit after being electrified is white, and the color of the light converted by the light signal emitted by the second light emitting layer to the at least one pixel unit after being electrified is white; or the color of the light converted by the light signal emitted by the first light-emitting layer to the at least one pixel unit after being electrified is blue, and the color of the light converted by the light signal emitted by the second light-emitting layer to the at least one pixel unit after being electrified is white, which is particularly based on practical application.

The display device provided by the embodiment of the utility model is provided with the second light-emitting layer in the light-emitting structure, and the second light-emitting layer absorbs external light and converts the external light into a light signal, so that the display device can emit light automatically, the light-emitting brightness of the display device can be enhanced, and the performance of the display device is further improved.

In one embodiment, as shown in fig. 4-6, the second light emitting layer 14 includes a layer of photoelectric conversion material disposed on a side of the substrate 4 remote from the first light emitting layer.

The above-described photoelectric conversion material layer can directly convert solar radiation energy into electric energy by a photovoltaic effect. The photoelectric conversion material in the photoelectric conversion material layer is not particularly limited here, and the photoelectric conversion material may include any one of single crystal silicon, polycrystalline silicon, amorphous silicon, for example.

The process for producing the photoelectric conversion material layer is not particularly limited, and the photoelectric conversion material layer may be formed by a plating etching technique, for example.

In the display device provided by the embodiment of the utility model, the photoelectric conversion material layer is arranged in the light-emitting structure, the photoelectric conversion material layer absorbs external natural light and directly converts the external natural light into the light signal, so that the display device can emit light automatically, the light-emitting brightness of the display device can be enhanced, and the performance of the display device is further improved.

In one embodiment, as shown in fig. 4, the light emitting structure further comprises a color conversion layer 15, the color conversion layer 15 being disposed on a side of the first light emitting layer remote from the substrate 4.

The above-described color conversion layer is configured to convert the color of light emitted from the light emitting unit, and, for example, when the first light emitting layer is a blue organic light emitting layer, the cost of the blue light emitting material is lower than the cost of the red light emitting material and the cost of the green light emitting material, respectively, and the use of the blue organic light emitting layer can reduce the cost. The blue organic light-emitting layer emits light signals after being electrified, the light converted by the light signals is blue, and the blue light can be converted into white light after passing through the color conversion layer, so that display is realized.

The color conversion layer is not particularly limited here, and may be formed by a plating etching technique, for example. By way of example, the materials of the above-mentioned color conversion layer may include quantum dots, fluorescent materials, etc., and specifically, the quantum dots may include perovskite crystalline materials, etc.; the fluorescent material may include aluminate phosphor, silicate phosphor, phosphate phosphor, tungstate phosphor, molybdate phosphor, antimonate phosphor, nitride phosphor, sulfide phosphor, and the like.

It should be noted that the light emitting structure of the display device of fig. 5 and 6 may also include the color conversion layer described above, which is disposed on a side of the first light emitting layer away from the substrate.

In the display device provided by the embodiment of the utility model, the color conversion layer can be used for converting the color of the light rays emitted by the first light emitting layer, so that more application scenes can be realized.

In one embodiment, as shown in fig. 4, the light emitting structure further includes a scattering layer 16, and the scattering layer 16 is disposed on a side of the first light emitting layer away from the substrate 4; the scattering layer 16 is configured to scatter the light signal emitted by the first light emitting layer.

The scattering layer is not particularly limited, and may be formed by a plating etching technique, for example. For example, the material of the scattering layer may include scattering particles, etc., which can scatter the light emitted from the first light emitting layer, thereby enlarging the light emitting angle of the light.

Fig. 4 illustrates an example in which the scattering layer 16 is disposed on the side of the color conversion layer 15 away from the substrate 4. Of course, the scattering layer may be disposed at other positions, for example, the scattering layer may be disposed on a side of the color conversion layer near the substrate, which is not particularly limited herein.

It should be noted that the light emitting structure of the display device of fig. 5 and 6 may also include the above-mentioned scattering layer, which may be disposed on a side of the color conversion layer away from the substrate, or may be disposed on a side of the color conversion layer closer to the substrate, which is not particularly limited herein.

In the display device provided by the embodiment of the utility model, the light emitted by the first light-emitting layer can be scattered through the scattering layer, so that the light of the display device can be diffused, and the display effect is better.

In one embodiment, as shown in fig. 3-6, the light emitting structure 2 further comprises a black protection layer 17, the black protection layer 17 being arranged between the substrate 4 and the first light emitting layer and surrounding the periphery of the light emitting structure 2.

The black protective layer is not particularly limited, and may be formed by a plating etching technique, for example. For example, the material of the above-described black protective layer may include black resin or the like.

Fig. 3 to 6 illustrate an example in which the black protection layer 17 is disposed between the first electrode 5 and the substrate 4.

In the display device provided by the embodiment of the utility model, the first driving layer in the light-emitting structure comprises the plurality of second driving units, each light-emitting unit can be controlled by the second driving units to emit light signals to the corresponding pixel units, so that the corresponding second driving units are controlled to light when the pixel units need to be lightened, the light-emitting units can not lighten in a screen-off or shutdown state, the problem of dark-state light leakage is avoided, and the display device is enabled to be black and transparent in view of the front and the side by combining the black protective layer.

In one embodiment, as shown in fig. 3-6, the light emitting structure 2 further comprises a first protective layer 18, the first protective layer 18 being arranged between the panel and the light emitting structure 2.

Specifically, as shown in fig. 3 to 6, the first protective layer 18 is disposed between the black protective layer 17 and the first polarizing layer 11.

In the display device provided by the embodiment of the utility model, each film layer in the light-emitting structure can be protected by arranging the first protective layer.

In one embodiment, as shown in fig. 7, the light emitting structure 2 further includes a lens layer 19, and the lens layer 19 is disposed on a side of the first light emitting layer away from the substrate 4; the lens layer 19 is configured to diffuse the optical signal emitted by the first light emitting layer.

The type of the above-mentioned lens layer is not particularly limited here, and the above-mentioned lens layer may include a conical lens or the like as an example. Fig. 7 is a view of the lens layer 19 as an example of a conical lens, and referring to fig. 7, the light L1 emitted from the light emitting portion 71 can be diffused by the lens layer 19, thereby enlarging the light emitting angle of the light L1.

In addition, the lens layer may be provided with diffusion particles that can diffuse the light emitted from the first light-emitting layer, specifically, the light-emitting portion, thereby further expanding the light emission angle of the light. Thus, in the case where the light emitting structure includes a lens layer having diffusion particles, the light emitting structure may or may not have a scattering layer, and is not particularly limited herein.

Also, the light emitting structure of the display device of fig. 4 and 6 may also include the above-described lens layer, which may be disposed at a side of the first light emitting layer away from the substrate, without being particularly limited thereto.

In the display device provided by the embodiment of the utility model, the lens layer is arranged on the light emitting side of the first light emitting layer, and the lens layer can convert the point light source into the surface light source, so that even if the first light emitting layer is provided with a small number of light emitting parts, the light emitting parts can be combined with the lens layer, and a good display effect can be realized.

It should be noted that the panel may be bonded to a printed circuit board (Printed Circuit Boards, PCB) via a Chip On Film (COF) in a non-display region of the display device.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. A display device, comprising a display panel and a light emitting structure, wherein the display panel is arranged on the light emitting side of the light emitting structure;

the display panel comprises a plurality of pixel units which are arranged in an array;

the light emitting structure comprises a first electrode layer, a first light emitting layer and a second electrode layer which are sequentially stacked on a substrate, wherein the first light emitting layer comprises a plurality of discrete light emitting units, and each light emitting unit is configured to emit light signals to at least one pixel unit under the control of the first electrode layer and the second electrode layer.

2. The display device of claim 1, wherein the first electrode layer comprises a plurality of discrete first electrodes and the second electrode layer comprises a plurality of discrete second electrodes, wherein a front projection of a structure of each of the first electrodes, each of the light emitting cells, and each of the second electrodes on the substrate coincides with a front projection of one of the pixel cells on the substrate;

each of the light emitting units is configured to emit the light signal to one of the pixel units under control of the first electrode and the second electrode.

3. The display device according to claim 2, wherein the pixel unit includes a plurality of sub-pixels having different colors;

each of the light emitting units is configured to emit the same light signal to a plurality of the subpixels different in color under control of the first electrode and the second electrode.

4. The display device according to claim 2, wherein the pixel unit includes a plurality of sub-pixels having different colors, and each of the light emitting units includes a plurality of discrete light emitting portions;

each of the light emitting sections is configured to emit an optical signal to one of the sub-pixels under control of the first electrode and the second electrode.

5. The display device of claim 1, wherein the first electrode layer comprises a plurality of discrete first electrodes and the second electrode layer comprises a plurality of discrete second electrodes, wherein a front projection of a structure of each of the first electrodes, each of the light emitting cells, and each of the second electrodes on the substrate coincides with a front projection of a plurality of the pixel cells on the substrate;

each of the light emitting units is configured to emit the light signal to a plurality of the pixel units under control of the first electrode and the second electrode.

6. The display device according to any one of claims 1 to 5, wherein the light emitting structure further comprises a second light emitting layer configured to receive external light and emit a light signal to at least one of the pixel units.

7. The display device according to claim 6, wherein the second light-emitting layer includes a photoelectric conversion material layer provided on a side of the substrate away from the first light-emitting layer.

8. The display device according to any one of claims 1 to 5, wherein the light-emitting structure further comprises a scattering layer provided on a side of the first light-emitting layer remote from the substrate;

the scattering layer is configured to scatter the light signal emitted by the first light emitting layer.

9. The display device according to any one of claims 1 to 5, wherein the light-emitting structure further comprises a black protective layer which is provided between the substrate and the first light-emitting layer and surrounds the periphery of the light-emitting structure.

10. The display device according to any one of claims 1 to 5, wherein the light-emitting structure further comprises a lens layer provided on a side of the first light-emitting layer remote from the substrate;

the lens layer is configured to diffuse the optical signal emitted by the first light emitting layer.