Display screen and electronic equipment

Abstract

The invention discloses a display screen and electronic equipment, and relates to the technical field of display equipment and the like. The display screen comprises a color filter layer and a pixel definition layer which are arranged in a stacked mode. A plurality of pixel units are arranged in the pixel definition layer; the color filter layer comprises a plurality of filter units, and the plurality of filter units and the plurality of pixel units are arranged in a one-to-one correspondence manner; wherein the plurality of light filtering units comprise a plurality of fixed light filtering units and a plurality of variable light filtering units, and the difference value between the wavelength of the emergent light of the fixed light filtering units and the wavelength of the emergent light of the corresponding pixel units is smaller than or equal to a first threshold value; the difference value between the wavelength of the emergent light of the variable filtering unit and the wavelength of the emergent light of the corresponding pixel unit is larger than a second threshold value, and the second threshold value is larger than or equal to the first threshold value. The problem that an existing display screen is serious in light reflection or low in light transmittance can be solved.

Description

Technical Field

[0001] This application belongs to the technical field of display devices, and specifically relates to a display screen and an electronic device. Background Technology

[0002] In electronic products, "natural light" or "near-natural light" refers to illumination that mimics the characteristics of sunlight in nature, providing users with a comfortable, soft, and natural lighting environment. This type of lighting typically has high color reproduction capabilities, as well as suitable color temperature and brightness, to reduce eye fatigue and protect vision. Such a spectrum includes beneficial ultraviolet and infrared rays, as well as the continuous visible spectrum, making it more eye-friendly.

[0003] Some displays in related technologies use polarizer-free technology. Such displays can only emit the three primary colors R / G / B, resulting in a discontinuous spectrum, which affects color reproduction and a comfortable, soft viewing experience. Summary of the Invention

[0004] The purpose of this application is to provide a display screen and electronic device that can solve the problem that current displays screens cannot form a continuous spectrum.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application provide a display screen, including: a color filter layer and a pixel definition layer stacked together; The pixel definition layer contains multiple pixel units; The color filter layer includes multiple filter units, and each filter unit corresponds one-to-one with a plurality of pixel units; wherein... The plurality of filter units include a plurality of fixed filter units and a plurality of variable filter units. The difference between the wavelength of the emitted light from the fixed filter unit and the wavelength of the emitted light from the corresponding pixel unit is less than or equal to a first threshold. The difference between the wavelength of the emitted light from the variable filter unit and the wavelength of the emitted light from the corresponding pixel unit is greater than a second threshold. The second threshold is greater than or equal to the first threshold.

[0006] Secondly, embodiments of this application also provide an electronic device, including the aforementioned display screen.

[0007] In this embodiment, a color filter layer replaces the function of a polarizer, thereby improving the problem of severe light reflection. Compared to a polarizer, the color filter layer has a smaller thickness, which is beneficial for the development of thinner and lighter displays. Furthermore, compared to a polarizer, using a color filter layer can also improve light transmittance, enabling the display to achieve better brightness with the same power consumption, thus being more energy-efficient. Further, the color filter layer includes variable filter units, which can perform color conversion on the light waves emitted from the pixel definition layer, thereby displaying a wider variety of colors. This is beneficial for achieving the continuity of the natural light spectrum and improving the color gamut. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the display screen disclosed in the embodiments of this application; Figure 2 This is a schematic diagram of the light emission of the display screen disclosed in the embodiments of this application; Figure 3 This is a spectral diagram of the display screen disclosed in the embodiments of this application; Figure 4 This is a schematic diagram of the color gamut of this application and conventional schemes.

[0009] Explanation of reference numerals in the attached figures: 10-Pixel definition layer; 11-Pixel unit; 20 - Color filter layer; 21 - Fixed filter unit; 22 - Variable filter unit; 23 - Light-blocking unit; 30 - Transparent cover; 40 - Flat protective layer; 50-Touchpad; 60-Thin film encapsulation; 70 - Thin-film transistor drive array. Detailed Implementation

[0010] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0011] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0012] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0013] refer to Figures 1 to 4 This application discloses a display screen, which includes a color filter layer 20 and a pixel definition layer 10. The color filter layer 20 and the pixel definition layer 10 can be stacked. In this way, the color filter layer 20 can filter the light waves emitted by the pixel definition layer 10, so that the light waves of the desired color can pass through the color filter layer 20 and be emitted outward, while light waves of other colors will be filtered out. In addition, the color filter layer 20 can also block light waves from other directions, while allowing light waves from specific directions to pass through, thereby improving the contrast of the display screen.

[0014] In some embodiments, the pixel definition layer 10 is provided with a plurality of pixel units 11, which can emit light waves of various colors so that the display screen can display a variety of different display effects.

[0015] Accordingly, the color filter layer 20 may include multiple filter units, which are configured one-to-one with multiple pixel units 11, so that the light waves emitted by the corresponding pixel unit 11 are filtered by each filter unit.

[0016] The multiple filter units include multiple fixed filter units 21 and multiple variable filter units 22. The difference between the wavelength of the emitted light from the fixed filter unit 21 and the wavelength of the emitted light from the corresponding pixel unit 11 is less than or equal to a first threshold.

[0017] It should be noted that the difference between the wavelength of the light emitted from the fixed filter unit 21 and the wavelength of the light emitted from the corresponding pixel unit 11 is less than or equal to the first threshold. This can be understood as the light emitted from the fixed filter unit 21 having the same color as the light emitted from the corresponding pixel unit 11. In other words, the fixed filter unit 21 does not change the color of the light emitted from the corresponding pixel unit 11. For example, if the light emitted from the pixel unit 11 is blue light, then the light emitted from the corresponding fixed filter unit 21 is also blue light.

[0018] The difference between the wavelength of the emitted light from the variable filter unit 22 and the wavelength of the emitted light from the corresponding pixel unit 11 can be greater than a second threshold, wherein the second threshold is greater than or equal to a first threshold.

[0019] It should be noted that if the wavelength difference between the emitted light from the variable filter unit 22 and the emitted light from the corresponding pixel unit 11 is greater than the second threshold, it can be understood that the emitted light from the variable filter unit 22 has a different color than the emitted light from the corresponding pixel unit 11. In other words, the variable filter unit 22 changes the color of the emitted light from the corresponding pixel unit 11. For example, if the emitted light from pixel unit 11 is blue light, then the emitted light from the corresponding variable filter unit 22 can be green light.

[0020] Based on this, the color filter layer 20 in this embodiment can include not only a fixed filter unit 21, but also a variable filter unit 22 for color conversion. The material used in the variable filter unit 22 is different from the material used in the fixed filter unit 21. By introducing the variable filter unit 22, the light waves emitted by the corresponding pixel unit 11 can irradiate the conversion material to emit light waves of different wavelengths.

[0021] In addition, the colors of the multiple fixed filter units 21 and the corresponding multiple pixel units 11 can be the same. In this case, the light waves emitted by each pixel unit 11 can be transmitted through the corresponding fixed filter unit 21 and then diffuse outward to display the color of the light waves emitted by the pixel unit 11.

[0022] Each variable filter unit 22 can perform color conversion on the light waves emitted by the corresponding pixel unit 11. In this case, the light waves emitted by each pixel unit 11 can be transmitted through the corresponding variable filter unit 22 and the color of the light waves can be changed so that the color of the outwardly radiating light waves is different from the color of the light waves emitted by the pixel unit 11.

[0023] Based on the above settings, this application embodiment uses a color filter layer 20 to replace the function of a polarizer, thereby improving the problem of severe light reflection. Compared with a polarizer, the color filter layer 20 has a smaller thickness, which is beneficial to the development of a thinner and lighter display screen. Furthermore, compared with a polarizer, it can also improve light transmittance, enabling the display screen to achieve better brightness under the same power consumption, thus being more conducive to energy saving.

[0024] Furthermore, the color of the light waves emitted by the pixel definition layer 10 can be converted by the variable filter unit 22, thereby displaying more different colors, which is beneficial to achieving the continuity of the spectrum of natural light and improving the color gamut.

[0025] In some embodiments, each of the multiple variable filter units 22 can be respectively configured to correspond one-to-one with each of the multiple pixel units 11 target pixel units, wherein the target pixel unit may include pixel units 11 of at least one color.

[0026] It should be noted here that since multiple filter units can be divided into multiple fixed filter units 21 and multiple variable filter units 22, correspondingly, multiple pixel units 11 can also be distinguished. The pixel unit 11 that is set one-to-one with each variable filter unit 22 is called the target pixel unit.

[0027] Furthermore, multiple variable filter units 22 can correspond to pixel units 11 of the same color. Of course, multiple variable filter units 22 can also correspond to pixel units 11 of multiple different colors, which can be set according to actual needs.

[0028] In some embodiments, the difference between the wavelengths of the emitted light from two pixel units 11 of the same color may be less than or equal to a third threshold; the difference between the wavelengths of the emitted light from two pixel units 11 of different colors may be greater than the third threshold.

[0029] It should be noted that if the wavelength difference is within the range of the third threshold, they can be considered to be the same color, while if the wavelength difference exceeds the range of the third threshold, they can be considered to be different colors.

[0030] In some embodiments, the plurality of variable filter units 22 may include at least one variable filter unit 22, wherein when the difference between the wavelengths of the incident light corresponding to the variable filter units 22 in the same type of variable filter unit 22 is less than or equal to a third threshold, the difference between the wavelengths of the emitted light corresponding to the variable filter units 22 in the same type of variable filter unit 22 may be less than or equal to the third threshold.

[0031] For example, the multiple variable filter units 22 may include one type of variable filter unit 22, and there may be two of the same type of variable filter unit 22, namely X-1 and X-1; if the incident light corresponding to the two of the same type of variable filter units 22 is green light, then the outgoing light transmitted through the two of the same type of variable filter units 22 can be yellow light. Of course, there may also be three, four, five, etc. of the same type of variable filter unit 22, depending on the actual needs.

[0032] In other embodiments, the plurality of variable filter units 22 may include at least one variable filter unit 22, wherein when the difference between the wavelengths of the incident light corresponding to the variable filter units 22 in different types of variable filter units 22 is less than or equal to a third threshold, the difference between the wavelengths of the outgoing light corresponding to the variable filter units 22 in different types of variable filter units 22 may be greater than the third threshold.

[0033] For example, the multiple variable filter units 22 may include two types of variable filter units 22, which may be X-1 and X-2 respectively; if the incident light corresponding to both variable filter units 22 is green light, then the outgoing light transmitted through the two variable filter units 22 may be yellow light and orange light respectively. It should be noted that each type of variable filter unit 22 may be one or more, depending on the actual needs.

[0034] In some other embodiments, the plurality of variable filter units 22 include at least one variable filter unit 22, wherein when the difference between the wavelengths of the incident light corresponding to the variable filter units 22 in the same type of variable filter unit 22 is greater than a third threshold, the difference between the wavelengths of the emitted light corresponding to the variable filter units 22 in the same type of variable filter unit 22 may be greater than the third threshold.

[0035] For example, the multiple variable filter units 22 may include one type of variable filter unit 22, and there may be two of the same type of variable filter unit 22, namely X-1 and X-1; let the incident light corresponding to the two of the same type of variable filter units 22 be blue light and green light, respectively, then the outgoing light transmitted through the two of the same type of variable filter units 22 may be cyan light and yellow light, respectively. Of course, there may also be three, four, five, etc. of the same type of variable filter unit 22, depending on the actual needs.

[0036] In some embodiments, the wavelength of the emitted light from the variable filter unit 22 may be greater than the wavelength of the emitted light from the pixel unit 11 corresponding to the variable filter unit 22.

[0037] Based on the above settings, the light waves emitted by the corresponding pixel unit 11 can be color-converted under the action of the variable filter unit 22 to obtain light waves with different colors from the pixel unit 11, which is beneficial to achieving the continuity of the spectrum and to increasing the color gamut.

[0038] In some embodiments, the color filter layer 20 may include a plurality of variable filter units 22, and the plurality of variable filter units 22 are of different colors. Based on this, the plurality of variable filter units 22 can respectively perform color conversion on the light waves emitted by their respective corresponding pixel units 11, thereby obtaining a variety of new light waves with different colors from the light waves emitted by the pixel units 11, which is beneficial to achieving spectral continuity and increasing the color gamut.

[0039] For example, the color filter layer 20 may include two variable filter units 22, three variable filter units 22, four variable filter units 22, etc. Of course, it may also include other numbers of variable filter units 22, which can be set according to actual needs, and are not specifically limited here.

[0040] In some more specific embodiments, the plurality of pixel units 11 may include red pixel units, green pixel units and blue pixel units, and the variable filter unit 22 may be configured to correspond to at least one of the green pixel units and blue pixel units.

[0041] Based on the above settings, each variable filter unit 22 can convert the color of the light wave emitted by the corresponding green pixel unit or blue pixel unit so as to obtain a light wave with a different color than the light wave emitted by the pixel unit 11, thereby helping to achieve spectral continuity and increasing the color gamut.

[0042] refer to Figure 2 In some more specific embodiments, the color filter layer 20 may include two variable filter units 22 of different colors. One of the variable filter units 22 is configured to correspond to the green pixel unit and is used to convert the green light wave emitted by the green pixel unit into a yellow light wave. Since the wavelength of the yellow light wave is greater than that of the green light wave, a yellow light wave is added between the green light wave and the red light wave. This prevents the red in the spectrum from jumping directly to the blue. Instead, the yellow light wave acts as a transition between the red and blue light waves, thereby improving the continuity of the spectrum. Furthermore, the addition of the yellow light wave also helps to increase the color gamut.

[0043] Another variable filter unit 22 is configured corresponding to the blue pixel unit to convert the blue light wave emitted by the blue pixel unit into a deep red light wave. Since the wavelength of the deep red light wave is greater than that of the blue light wave, a deep red light wave is added between the green light wave and the red light wave. This prevents the green in the spectrum from jumping directly to red. Instead, the yellow light wave acts as a transition between the green and red light waves, thereby improving the continuity of the spectrum. Furthermore, the addition of the yellow light wave also helps to increase the color gamut.

[0044] In some other more specific embodiments, the color filter layer 20 may include three variable filter units 22 of different colors. The emitted light from the pixel units 11, which are respectively set with the three different colors, can be transformed into purple-green, yellow and dark red, thereby increasing the color gamut and improving the continuity of the spectrum.

[0045] It should be noted that the color that green is transformed into and the color that blue is transformed into through the variable filter unit 22 are determined by the material of the variable filter unit 22, and can be selected according to the requirements.

[0046] In some embodiments, the color filter layer 20 may further include a light-shielding unit 23, such as Figure 1 As shown, the light-blocking unit 23 fills the space between adjacent filter units to block light, thereby allowing the desired color light to pass through while blocking unwanted light.

[0047] In some embodiments, the display screen may be a polarizer-free display screen, or a microprism display screen, or an in-pixel wiring display screen. In addition, the display screen may be of other types, which are not specifically limited here.

[0048] In addition, the display screen can be one of the following: flat display screen, foldable display screen, rollable display screen, and sliding display screen. Besides these, the display screen can also be other shapes, which are not specifically limited here.

[0049] In this embodiment, in addition to the structures described above, the display screen may also include a transparent cover plate 30, a planar protective layer 40, a touch panel 50, a thin-film encapsulation 60, a thin-film transistor driving array 70, and other structures. Along the thickness direction of the display screen, the transparent cover plate 30, the planar protective layer 40, the color filter layer 20, the touch panel 50, the thin-film encapsulation 60, the pixel definition layer 10, and the thin-film transistor driving array 70 can be sequentially stacked, such as... Figure 1 As shown. It should be noted that the specific structure, function and principle of the transparent cover plate 30, the flat protective layer 40, the touch panel 50, the thin film encapsulation 60, the thin film transistor driving array 70, etc. can be referred to the existing technology, and will not be elaborated here.

[0050] In addition, the transparent cover plate 30 and the flat protective layer 40 can also be fixed together by optical adhesive.

[0051] In this embodiment, the following detailed description is given, taking multiple pixel units 11 as red pixel units, green pixel units and blue pixel units respectively, multiple fixed filter units 21 as red pixel units, green pixel units and blue pixel units respectively, and multiple variable filter units 22 as X-1 and X-2 respectively.

[0052] When the color filter layer 20 only includes fixed filter units 21, the pixel definition layer 10 emits red (R) light waves, green (G) light waves, and blue (B) light waves through multiple pixel units 11, which penetrate the multiple fixed filter units 21 of the color filter layer 20, thereby displaying R light waves, G light waves, and B light waves to form a three-color spectrum.

[0053] When the color filter layer 20 includes a fixed filter unit 21 and a variable filter unit 22, the pixel definition layer 10 emits red (R) light waves, green (G) light waves, and blue (B) light waves through multiple pixel units 11. Among them, the R light waves normally penetrate the fixed filter unit 21 of the R color and present a red spectrum. A portion of the G light waves and B light waves normally penetrate the fixed filter unit 21 of the G color and the fixed filter unit 21 of the B color and present a green spectrum and a blue spectrum, respectively. Another portion of the G light waves and B light waves penetrate the variable filter unit 22 and undergo color conversion, thereby presenting a yellow spectrum and a deep red spectrum, respectively.

[0054] Based on the above settings, by designing multiple different types of variable filter units 22, multispectral and multicolor display can be achieved, which is beneficial to realizing the continuous spectrum of natural light.

[0055] In addition to achieving continuous multispectral density, the embodiments of this application can also add multiple primary colors such as purple-green, yellow, and dark red, which means that multiple coordinate points can be repositioned in the chromatogram, thereby achieving a great expansion of the color gamut.

[0056] like Figure 4 Examples of the color gamut areas of the R / G / B three-primary-color display scheme and the color gamut areas covered by multiple primary colors in the embodiments of this application are given respectively. The R / G / B three-primary-color scheme, due to the triangular structure formed by the three connected points, has difficulty covering the color gamut of the true surface colors visible to the human eye (referred to as the pointer color gamut). Figure 4 The white line in the example covers the color gamut; while the multi-primary color scheme in this application can add new coordinates in addition to the three coordinates of R / G / B, and connect four or even five coordinate points to form a quadrilateral / pentagonal structure, thereby greatly expanding the color gamut range and completely covering the pointer color gamut.

[0057] Based on the aforementioned display screen, this application also discloses an electronic device, which includes the aforementioned display screen. The electronic device can be a mobile phone, tablet computer, wearable device, etc.

[0058] In summary, the embodiments of this application do not require modification of the pixel definition layer 10, thus eliminating the need to redesign the driver IC and modify the display screen. Instead, they can be achieved simply by modifying some of the fixed filter units 21 in the color filter layer 20 to variable filter units 22, which has the advantages of low modification cost and ease of implementation.

[0059] In this embodiment, by replacing the polarizer with a color filter layer 20, the thickness of the display screen can be reduced, and advantages such as light transmittance and high color gamut can be achieved. Furthermore, by controlling the emission wavelength of the variable filter unit 22, a near-natural spectrum can be achieved, and blue light can be reduced and the filtering effect can be improved, thereby providing an eye protection effect.

[0060] In this embodiment, by designing the number, color, and arrangement of the variable filter units 22, a more precise design of the spectrum can be achieved, which is more conducive to improving the color gamut and covering the pointer color gamut range.

[0061] Furthermore, the arrangement of the color filter layer 20 and the pixel definition layer 10 in the embodiments of this application is not limited to the pixel design and arrangement of OLEDs, such as Real arrangement, RGB arrangement, diamond arrangement, etc., and has wide applicability.

[0062] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A display screen, characterized in that, include: A color filter layer (20) and a pixel definition layer (10) are stacked together. The pixel definition layer (10) contains multiple pixel units (11). The color filter layer (20) includes multiple filter units, and each of the multiple filter units is configured in a one-to-one correspondence with a multiple of the pixel units (11); wherein, The plurality of filter units include a plurality of fixed filter units (21) and a plurality of variable filter units (22). The difference between the wavelength of the emitted light from the fixed filter unit (21) and the wavelength of the emitted light from the corresponding pixel unit (11) is less than or equal to a first threshold. The difference between the wavelength of the emitted light from the variable filter unit (22) and the wavelength of the emitted light from the corresponding pixel unit (11) is greater than a second threshold. The second threshold is greater than or equal to the first threshold.

2. The display screen according to claim 1, characterized in that, Each of the multiple variable filter units (22) is respectively configured to correspond one-to-one with each of the multiple pixel units (11), wherein the target pixel unit includes a pixel unit (11) of at least one color.

3. The display screen according to claim 2, characterized in that, The difference between the wavelengths of the emitted light from two pixel units (11) of the same color is less than or equal to the third threshold, and the difference between the wavelengths of the emitted light from two pixel units (11) of different colors is greater than the third threshold.

4. The display screen according to claim 3, characterized in that, The plurality of variable filter units (22) includes at least one variable filter unit (22); wherein, When the difference between the wavelengths of the incident light corresponding to the variable filter unit (22) in the same type of variable filter unit (22) is less than or equal to the third threshold, the difference between the wavelengths of the outgoing light corresponding to the variable filter unit (22) in the same type of variable filter unit (22) is less than or equal to the third threshold.

5. The display screen according to claim 3, characterized in that, The plurality of variable filter units (22) includes at least one variable filter unit (22); wherein, When the difference between the wavelengths of the incident light corresponding to the variable filter unit (22) in different types of variable filter units (22) is less than or equal to the third threshold, the difference between the wavelengths of the outgoing light corresponding to the variable filter unit (22) in different types of variable filter units (22) is greater than the third threshold.

6. The display screen according to claim 3, characterized in that, The plurality of variable filter units (22) includes at least one variable filter unit (22); wherein, When the difference between the wavelengths of the incident light corresponding to the variable filter unit (22) in the same type of variable filter unit (22) is greater than the third threshold, the difference between the wavelengths of the outgoing light corresponding to the variable filter unit (22) in the same type of variable filter unit (22) is greater than the third threshold.

7. The display screen according to any one of claims 1 to 6, characterized in that, The wavelength of the emitted light from the variable filter unit (22) is greater than the wavelength of the emitted light from the pixel unit (11) corresponding to the variable filter unit (22).

8. The display screen according to any one of claims 1 to 6, characterized in that, The plurality of pixel units (11) include red pixel units, green pixel units and blue pixel units; The variable filter unit (22) is configured to correspond to at least one of the green pixel unit and the blue pixel unit.

9. The display screen according to any one of claims 1 to 6, characterized in that, The color filter layer (20) further includes a light-shielding unit (23) which fills the spaces between adjacent filter units.

10. An electronic device, characterized in that, Includes the display screen as described in any one of claims 1 to 9.

Images