Display panel and display device

Abstract

The utility model relates to a display panel and a display device, the display panel is provided with a first display area and a second display area adjacent to the first display area, and the display panel comprises a driving substrate and a light emitting layer; the light-emitting layer is located on one side of the driving substrate and electrically connected with the driving substrate, the light-emitting layer comprises a plurality of first pixel units located in the first display area and a plurality of second pixel units located in the second display area, and each first pixel unit and each second pixel unit each comprise at least one light-emitting chip; wherein the number of the light-emitting chips in the second pixel units is smaller than the number of the light-emitting chips in the first pixel units, and the light-emitting color types of the light-emitting chips in the second pixel units are smaller than the light-emitting color types of the light-emitting chips in the first pixel units; on the basis of ensuring that the display effect meets user requirements, the number of arranged light-emitting chips can be reduced, so that the overall cost of the product is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, in particular to a display panel and a display device. BACKGROUND

[0002] With the rapid development of display technology, MLED (English full name: Micro-LED, Chinese abbreviation: micro light emitting diode) technology is favored due to its low energy consumption, high brightness, high contrast and long service life. In order to ensure the display effect, the light emitting color of the LED lamp in the MLED product is usually set to multiple, and the number of LED lamps is also set to be relatively large; since the cost of LED lamps in MLED products is relatively high, the overall cost of MLED products is relatively high, in order to improve market competitiveness, how to reduce the cost of MLED products has become a problem to be solved. CONTENT OF THE UTILITY MODEL

[0003] The embodiments of the present application provide a display panel and a display device, which can reduce the number of layout of light emitting chips on the basis of ensuring that the display effect meets the user's demand, thereby reducing the overall cost of the product.

[0004] In order to achieve the above purpose, according to the first aspect of the present application, a display panel is provided, the display panel has a first display area and a second display area adjacent to the first display area, and the display panel comprises:

[0005] a driving substrate; and

[0006] a light emitting layer located on one side of the driving substrate and electrically connected with the driving substrate, the light emitting layer comprises a plurality of first pixel units located in the first display area and a plurality of second pixel units located in the second display area, each first pixel unit and each second pixel unit comprises at least one light emitting chip;

[0007] wherein the number of light emitting chips in the second pixel unit is less than the number of light emitting chips in the first pixel unit, and the number of light emitting colors of the light emitting chips in the second pixel unit is less than the number of light emitting colors of the light emitting chips in the first pixel unit.

[0008] In an embodiment, each first pixel unit comprises at least a red light emitting chip, a green light emitting chip and a blue light emitting chip.

[0009] In an embodiment, each second pixel unit comprises one or two of a red light emitting chip, a green light emitting chip and a blue light emitting chip.

[0010] In an embodiment, each second pixel unit further comprises a white light emitting chip.

[0011] In an embodiment, the first pixel units are arranged in a first display area of the display panel, and the second pixel units are arranged in a second display area of the display panel.

[0012] In an embodiment, the display panel has at least two second display areas, and the second pixel units are arranged in the at least two second display areas in different unit densities.

[0013] In an embodiment, the display panel has at least two second display areas, and the at least two second display areas are respectively located on two sides of the first display area and are respectively arranged adjacent to the first display area.

[0014] In an embodiment, the first display area is located in a central region of the display panel, and the second display area is arranged around an outer periphery of the first display area.

[0015] In an embodiment, the driving substrate includes a substrate, a plurality of scan lines, and a plurality of data lines, the plurality of scan lines are arranged on one side of the substrate, and the plurality of data lines are arranged on one side of the substrate and cross the plurality of scan lines.

[0016] The driving substrate further includes a plurality of thin film transistors and a plurality of metal pad traces, the plurality of thin film transistors are arranged on one side of the substrate and are located in the first display area, the plurality of metal pad traces are located on a side of the plurality of thin film transistors away from the substrate and are electrically connected to the plurality of thin film transistors, the light emitting chip of the first pixel unit is arranged on the metal pad trace, and a pin of the light emitting chip is electrically connected to the metal pad trace.

[0017] The light emitting chip of the second pixel unit is located at an intersection of one of the scan lines and one of the data lines.

[0018] According to a second aspect of the present application, a display device is provided, including the display panel described above.

[0019] In the display panel of the embodiment of the present application, the display panel has a first display area and a second display area adjacent to the first display area; a plurality of first pixel units are arranged in the first display area, and a plurality of second pixel units are arranged in the second display area; each first pixel unit and each second pixel unit includes at least one light emitting chip. By setting the number of light emitting chips in the second pixel unit to be less than the number of light emitting chips in the first pixel unit, and the number of light emitting color types of the light emitting chips in the second pixel unit to be less than the number of light emitting color types of the light emitting chips in the first pixel unit, the first display area can display images with rich and complex colors, and the second display area can display images with single and simple colors. Since the images displayed in the second display area are simpler than those in the first display area, the number of light emitting chips can be reduced to reduce the overall cost of the product while ensuring that the display effect meets the user's needs.

[0020] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0022] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0023] Figure 1 The first pixel distribution diagram of the display panel provided by the embodiment of the present application;

[0024] Figure 2 The second pixel distribution diagram of the display panel provided by the embodiment of the present application;

[0025] Figure 3 The third pixel distribution diagram of the display panel provided by the embodiment of the present application;

[0026] Figure 4 The fourth pixel distribution diagram of the display panel provided by the embodiment of the present application;

[0027] Figure 5 The film layer diagram of the display panel provided by the embodiment of the present application. DETAILED DESCRIPTION

[0028] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0029] The present application provides a display panel and a display device. The following will be described in detail. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments.

[0030] The present application does not make specific limitation on the display device, which includes one of a vehicle display screen, an electronic reader, a mobile display device such as a mobile phone, and a wearable display device such as a smart watch.

[0031] The present application does not make specific limitation on the display panel 100. The display panel 100 includes a Micro LED display panel 100 or a Mini LED display panel 100. Taking the Micro LED display panel 100 as an example, the Micro LED display panel 100 is favored due to its low energy consumption, high brightness, high contrast, long service life and other advantages. However, in the Micro LED display panel 100, the cost of LED chips is high, and accounts for about 50% of the total cost of the display panel 100, thus resulting in high overall cost of the Micro LED display panel 100.

[0032] In actual use, the display device does not display complex images on the whole. Taking a vehicle display screen as an example, the vehicle display screen is not only used to display basic information of the vehicle (such as speed, rotation speed, fuel consumption, etc.), but also can be used to display a navigation picture, an entertainment picture, a communication picture or a safety auxiliary picture. When displaying the navigation picture, the display screen needs to display clear images and texts, and has very fast response time to avoid the occurrence of trailing phenomenon and ensure smooth picture. When displaying the rotation speed or fuel consumption information, the display requirement of the display screen is relatively low due to the simple display picture.

[0033] The present application provides a display panel 100. Please refer to Figures 1 to 5The display panel 100 has a first display area A1 and a second display area A2 adjacent to the first display area A1, and the display panel 100 comprises a driving substrate 1 and a light-emitting layer 2; the light-emitting layer 2 is located on one side of the driving substrate 1 and is electrically connected with the driving substrate 1, and the light-emitting layer 2 comprises a plurality of first pixel units 21 located in the first display area A1 and a plurality of second pixel units 22 located in the second display area A2, each first pixel unit 21 and each second pixel unit 22 comprises at least one light-emitting chip 23; wherein the number of light-emitting chips 23 in the second pixel unit 22 is less than the number of light-emitting chips 23 in the first pixel unit 21, and the light-emitting color types of the light-emitting chips 23 in the second pixel unit 22 are more than the light-emitting color types of the light-emitting chips 23 in the first pixel unit 21.

[0034] In the embodiments provided in the present application, the display panel 100 has a first display area A1 and a second display area A2 adjacent to the first display area A1; a plurality of first pixel units 21 are arranged in the first display area A1, and a plurality of second pixel units 22 are arranged in the second display area A2; each first pixel unit 21 and each second pixel unit 22 comprises at least one light-emitting chip 23; by arranging the number of light-emitting chips 23 in the second pixel unit 22 to be less than the number of light-emitting chips 23 in the first pixel unit 21, and the light-emitting color types of the light-emitting chips 23 in the second pixel unit 22 to be less than the light-emitting color types of the light-emitting chips 23 in the first pixel unit 21, the first display area A1 can display images with rich and complex colors, and the second display area A2 can display images with single and simple colors; since the images displayed in the second display area A2 are simpler than those in the first display area A1, the number of light-emitting chips 23 can be reduced on the basis of ensuring that the display effect meets the user's demand, thereby reducing the overall cost of the product.

[0035] The present application does not make specific limitations on the display types of the first pixel units 21 and the second pixel units 22. The light-emitting color types of the light-emitting chips 23 in the second pixel unit 22 are more than the light-emitting color types of the light-emitting chips 23 in the first pixel unit 21; that is, a plurality of first pixel units 21 perform color display in the first display area A1, and a plurality of second pixel units 22 perform monochrome display or double-color display in the second display area A2.

[0036] It can be known that the color display refers to a display capable of simultaneously using multiple colors to display images or text. The color display is usually based on the principle of additive color mixing, that is, by mixing red, green and blue three basic colors of light in different proportions, other colors are generated. Red, green and blue are called three primary colors, and almost all visible colors can be generated by combining different three primary colors.

[0037] The bicolor display refers to a display capable of simultaneously using two colors to display images or text. In the bicolor display, each pixel is usually composed of two independent light-emitting units or reflecting units, corresponding to two different colors, the most common combinations are red and green, yellow and black, white and black, etc.; by adjusting the brightness and contrast of the two light-emitting units, a variety of gray scales and color combinations can be presented, so as to realize more rich image performance.

[0038] The monochrome display refers to a display that uses only one color to display images or text. In the monochrome display, each pixel can only display one color (such as white, yellow, green, red, etc.), which is usually realized by a light-emitting unit or a reflecting unit. For self-luminous monochrome displays (such as OLED or LED), each pixel is an independent light source, and different gray scales are presented by adjusting the brightness and contrast of the light source, thereby forming images or text.

[0039] Based on this, in an embodiment, each first pixel unit 21 includes at least three first light-emitting chips 231 of different colors, and the first light-emitting chip 231 is set to be one of a red light-emitting chip 23, a green light-emitting chip 23 or a blue light-emitting chip 23. That is, the first pixel unit 21 includes at least three independent micro-LEDs, the colors of the three micro-LEDs are different, and the colors of the three micro-LEDs are red, green and blue respectively. The three micro-LEDs can directly emit light, and by adjusting the brightness of the red, green and blue micro-LEDs, various gray levels from black to white and various colors between the two can be generated.

[0040] Please refer to Figure 1In an embodiment, the plurality of second pixel units 22 perform monochrome display in the second display area A2; each of the second pixel units 22 comprises a second light emitting chip 232, and the plurality of second light emitting chips 232 of the plurality of second pixel units 22 are of the same color. That is, the second pixel unit 22 comprises a micro-LED, and the micro-LEDs of the plurality of second pixel units 22 are of the same color, which are usually red, green, blue or white; although the monochrome micro-LED is of only one color, different gray scales can be presented by adjusting the brightness of each micro-LED.

[0041] Referring to Figure 2 In an embodiment, the plurality of second pixel units 22 perform dual-color display in the second display area A2; each of the second pixel units 22 comprises two third light emitting chips 233 of different colors. That is, the second pixel unit 22 comprises two micro-LEDs of different colors, and the color combination of the two micro-LEDs can be red and green, yellow and black, or white and black; in the second display area A2, two colors can be displayed by alternately lighting the two micro-LEDs, forming a dynamic effect; the two micro-LEDs can also be simultaneously lighted to display a third color by color mixing; and different gray scales and color combinations can be presented by adjusting the brightness of the two micro-LEDs.

[0042] In an embodiment, the second pixel unit 22 comprises three independent micro-LEDs, including two micro-LEDs emitting colored light and one white light emitting chip.

[0043] Referring to Figure 1 The color and image displayed by the first display area Al are relatively complex, and the color and image displayed by the second display area A2 are relatively simple. Usually, the area of the first display area Al is larger than that of the second display area A2, and the first display area Al as the main display area of the display panel 100 is the visual focus area of the user; by arranging the unit density of the first pixel units 21 arranged in the first display area Al to be greater than the unit density of the second pixel units 22 arranged in the second display area A2, the number of the second pixel units 22 arranged in the second display area A2 can be reduced on the basis of ensuring that the display effect meets the user's demand, thereby further reducing the number of light emitting chips 23 arranged in the second display area A2, and thus reducing the cost.

[0044] In an embodiment, the display panel 100 has at least two second display areas A2, the display contents of the two second display areas A2 are different, and the color and image complexity displayed by the two second display areas A2 are also different; the unit density of the second pixel units 22 arranged in the two second display areas A2 is different, and on the basis of ensuring that the display effect meets the user's demand, the arrangement mode of the second pixel units 22 in the second display areas A2 can be further rationalized, thereby further reducing the arrangement number of the light emitting chips 23 in the second display areas A2, and further reducing the cost.

[0045] The application does not make specific limitations on the arrangement positions of the first display area A1 and the second display area A2.

[0046] Please refer to Figure 1 and Figure 2 In an embodiment, the display panel 100 has one second display area A2, and the second display area A2 is arranged on one side of the first display area A1 and is adjacent to the first display area A1.

[0047] Please refer to Figure 3 In an embodiment, the display panel 100 has at least two second display areas A2, and the two second display areas A2 are arranged on two sides of the first display area A1 and are adjacent to the first display area A1, respectively.

[0048] Please refer to Figure 4 In an embodiment, the first display area A1 is located in the central region of the display panel 100, and the second display area A2 is arranged on the outer periphery of the first display area A1.

[0049] It can be known that because the visual concentration range of the human eye is limited, when watching the display panel 100, the visual concentration area of the human eye is generally the central display area of the display panel 100, and the central display area of the display panel 100 can be taken as the first display area A1; at the same time, because the human eye has weak perception ability for the edge region of the display panel 100, the edge region of the display panel 100 can be taken as the second display area A2, that is, the second display area A2 is arranged on both sides of the central display area, or the second display area A2 is arranged on the outer periphery of the first display area A1; on the basis of ensuring that the display effect meets the user's demand, the arrangement number of the second pixel units 22 in the second display area A2 can be reduced, thereby further reducing the arrangement number of the light emitting chips 23 in the second display area A2, and further reducing the cost.

[0050] The application does not make specific restrictions on the driving mode of the first pixel unit 21 and the second pixel unit 22. The first pixel unit 21 displays a color image in the first display area A1, and the driving mode of the first pixel unit 21 usually includes one of current driving, voltage driving, hybrid driving, pulse width modulation, and active matrix driving. The second pixel unit 22 displays a monochrome image or a two-color image in the second display area A2. Taking the case of displaying a monochrome image in the second display area A2 as an example, the driving mode of monochrome display is usually active matrix driving or passive matrix driving. The driving mode of the first pixel unit 21 and the second pixel unit 22 can be the same or different.

[0051] It can be known that active matrix driving refers to that each pixel is equipped with a separate thin film transistor 12 (TFT), and the brightness of each micro-LED can be independently controlled. Active matrix driving has faster response speed, higher contrast, and better image quality. Passive matrix driving refers to that pixels are organized into a matrix of rows and columns, and only one row of pixels can be activated at a time. Passive matrix driving has simple structure and low cost, but has slower response speed and is suitable for static content display.

[0052] In an embodiment, referring to Figure 5 , the driving substrate 1 includes a substrate 11, a plurality of scan lines (not shown in the figure), a plurality of data lines (not shown in the figure), a plurality of thin film transistors 12, and a plurality of metal pad traces 13. The plurality of scan lines are arranged on one side of the substrate 11. The plurality of data lines are arranged on one side of the substrate 11 and cross the plurality of scan lines.

[0053] A plurality of the thin film transistors 12 are arranged on one side of the substrate 11 and at least in the first display area A1. The gate electrode 121 of the thin film transistor 12 is in the same layer as the scan line and is arranged at intervals and is electrically connected to the scan line. The source electrode 122 of the thin film transistor 12 is in the same layer as the data line and is arranged at intervals and is electrically connected to the data line. A plurality of the metal pad traces 13 are arranged on the side of the plurality of thin film transistors 12 away from the substrate 11. The metal pad trace 13 is electrically connected to the drain electrode 123 of the thin film transistor 12. The light emitting chip 23 of the first pixel unit 21 is arranged on the metal pad trace 13 and the pin thereof is electrically connected to the metal pad trace 13. That is, in the first display area A1, the driving mode of the plurality of first pixel units 21 is active matrix driving.

[0054] In an embodiment, the plurality of thin film transistors 12 are arranged in the first display area A1 and the second display area A2. The plurality of first pixel units 21 are electrically connected to the thin film transistors 12 in the first display area A1. The plurality of second pixel units 22 are electrically connected to the thin film transistors 12 in the second display area A2. That is, the driving mode of the plurality of first pixel units 21 is active matrix driving. The driving mode of the plurality of second pixel units 22 is active matrix driving.

[0055] In another embodiment, the plurality of thin film transistors 12 are arranged in the first display area A1. In the second display area A2, the light emitting chip 23 of each second pixel unit 22 is arranged at an intersection of the scan line and the data line. That is, the driving mode of the plurality of first pixel units 21 is active matrix driving. The driving mode of the plurality of second pixel units 22 is passive matrix driving.

[0056] In a second aspect, the embodiments of the present application provide a display device. The display device comprises a display panel 100. It should be noted that the display panel 100 is the display panel 100 described above, that is, the display panel 100 comprises all the technical features of the display panel 100 described above. The display device comprises all the embodiments of the display panel 100 described above, that is, the display device has all the technical effects of the embodiments described above, which will not be described here.

[0057] In the description of the application, the terms "first", "second", "third" and the like are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0058] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0059] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0060] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment without departing from the technical solution of the present application and in accordance with the technical essence of the present application still falls within the scope of the technical solution of the present application.

Claims

1. A display panel, characterized by, The display panel has a first display area and a second display area adjacent to the first display area, and comprises: a driving substrate; and a light-emitting layer located on one side of the driving substrate and electrically connected to the driving substrate, the light-emitting layer comprising a plurality of first pixel units in the first display area and a plurality of second pixel units in the second display area, each of the first pixel units and each of the second pixel units comprising at least one light-emitting chip. The number of light-emitting chips in the second pixel units is less than the number of light-emitting chips in the first pixel units, and the number of light-emitting colors of the light-emitting chips in the second pixel units is less than the number of light-emitting colors of the light-emitting chips in the first pixel units.

2. The display panel of claim 1, wherein, Each of the first pixel units comprises at least a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip.

3. The display panel of claim 1, wherein, Each of the second pixel units comprises one or two of a red light-emitting chip, a green light-emitting chip and a blue light-emitting chip.

4. The display panel of claim 3, wherein, Each of the second pixel units further comprises a white light-emitting chip.

5. The display panel according to any one of claims 2 to 4, wherein The unit density of the first pixel units arranged in the first display area is greater than the unit density of the second pixel units arranged in the second display area.

6. The display panel according to any one of claims 2 to 4, wherein The display panel has at least two second display areas, and the unit density of the second pixel units arranged in the two second display areas is different.

7. The display panel of claim 1, wherein, The display panel has at least two second display areas, and the two second display areas are respectively located on two sides of the first display area and are respectively adjacent to the first display area.

8. The display panel of claim 1, wherein, The first display area is located in a central region of the display panel, and the second display area is located on a peripheral side of the first display area.

9. The display panel of claim 1, wherein, The driving substrate comprises a substrate, a plurality of scanning lines and a plurality of data lines, the plurality of scanning lines are arranged on one side of the substrate, and the plurality of data lines are arranged on one side of the substrate and cross the plurality of scanning lines. The driving substrate further comprises a plurality of thin film transistors and a plurality of metal pad traces, the plurality of thin film transistors are arranged on one side of the substrate and at least in the first display area, and the plurality of metal pad traces are on the side of the plurality of thin film transistors away from the substrate and electrically connected with the plurality of thin film transistors ， The light emitting chip of the first pixel unit is arranged on the metal pad trace, and the pin of the light emitting chip is electrically connected with the metal pad trace. The light-emitting chip of the second pixel unit is located at one intersection of the scanning lines and the data lines.

10. A display device, characterized by comprising: The display panel comprises the display panel according to any one of claims 1 to 9.

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