Light emitting unit for display panel, display panel and display device

Abstract

The application discloses a light-emitting unit for a display panel, a display panel and a display device, the light-emitting unit comprising a pixel groove, a light-emitting piece and a transmissive-reflection piece; the light-emitting piece is arranged on at least part of the side wall of the pixel groove, and the light-emitting piece is adapted to emit characteristic light; the transmissive-reflection piece is arranged on the bottom wall of the pixel groove, and the transmissive-reflection piece is adapted to reflect the characteristic light and allow other light to pass through. According to the light-emitting unit of the application, the pixel groove is arranged, the light-emitting piece is arranged on the side wall of the pixel groove, the area of the non-transparent area in the display panel can be reduced, the transmissive-reflection piece is arranged on the bottom wall of the pixel groove, the characteristic light is reflected by the transmissive-reflection piece and emitted from the opening of the pixel groove, and other light can pass through the transmissive-reflection piece, so that the light-emitting unit has the light-transmitting property, the transmittance of the display panel is improved, and the transparent display effect of the display panel is improved.

Description

Technical Field

[0001] This invention relates to the field of displays, and more particularly to a light-emitting unit, a display panel, and a display device for a display panel. Background Technology

[0002] With the advancement of display technology, transparent displays have been gradually developed. A transparent display refers to a screen that is translucent, making it as transparent as glass. Users can see the images behind the transparent display, thus improving the user experience.

[0003] CN105789260B discloses a transparent display panel and its fabrication method. The transparent display panel includes a pixel light-emitting area and a non-pixel light-emitting area disposed on a substrate. The pixel light-emitting area is provided with light-emitting components, wherein each light-emitting component includes a reflective electrode, a transparent pixel electrode, a light-emitting layer, and a transparent top electrode arranged sequentially. The reflective electrode is disposed in the inner edge region of the pixel light-emitting area and extends outward to the non-pixel light-emitting area, such that the light-emitting component forms a reflective area with the reflective electrode and a light-transmitting area outside the reflective area.

[0004] In related technologies, the arrangement of components in a display screen can affect its transparency, leading to a decrease in the user experience. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide a light-emitting unit for a display panel. According to the invention, the light-emitting unit, by setting pixel slots and disposing light-emitting elements on the sidewalls of the pixel slots, can reduce the area of ​​non-transparent regions in the display panel. Furthermore, by covering the bottom wall of the pixel slots with a reflective element, the reflective element reflects characteristic light rays, allowing these characteristic light rays to exit from the openings of the pixel slots, while other light rays can pass through the reflective element, thus making the light-emitting unit translucent, improving the transmittance of the display panel, and thereby enhancing the transparent display effect of the display panel.

[0006] A second objective of this invention is to provide a display panel having the aforementioned light-emitting unit.

[0007] A third objective of the present invention is to provide a display device having the above-described display panel.

[0008] The light-emitting unit according to the present invention is used in a display panel, the light-emitting unit comprising: a pixel slot; a light-emitting element disposed on at least a portion of the sidewall of the pixel slot, the light-emitting element being adapted to emit characteristic light rays; and a reflective element covering the bottom wall of the pixel slot, the reflective element being adapted to reflect the characteristic light rays and allow other light rays to pass through.

[0009] According to the present invention, the light-emitting unit is provided with pixel slots, and the light-emitting element is disposed on the side wall of the pixel slots. This can reduce the area of ​​the non-transparent area in the display panel. Furthermore, by covering the bottom wall of the pixel slots with a reflective element, the reflective element reflects the characteristic light rays so that the characteristic light rays are emitted from the opening of the pixel slots, and other light rays can pass through the reflective element, making the light-emitting unit translucent and improving the transparency of the display panel, thereby enhancing the transparent display effect of the display panel.

[0010] According to some embodiments of the present invention, the pixel slot has a first sidewall and a second sidewall facing each other, and the light-emitting element is disposed on the first sidewall and / or the second sidewall.

[0011] According to some embodiments of the present invention, the light-emitting unit further includes a reflector disposed between the light-emitting element and the sidewall of the pixel slot, the reflector being disposed around the inner periphery of the sidewall of the pixel slot.

[0012] According to some embodiments of the present invention, the light-emitting unit further includes: a light-blocking member disposed between the reflector and the sidewall of the pixel slot, the light-blocking member being disposed around the inner periphery of the sidewall of the pixel slot, and the light-blocking member being adapted to block external stray light.

[0013] According to some embodiments of the present invention, the light-emitting unit further includes a driving circuit, the driving circuit covering at least a portion of the outer periphery of the light-emitting element and adapted to supply power to the light-emitting element.

[0014] According to some embodiments of the present invention, the light-emitting unit further includes a scatterer, the scatterer being housed within the pixel slot, the scatterer being adapted to scatter the characteristic light.

[0015] According to some embodiments of the present invention, the scatterer is composed of scattering particles, which fill the pixel slot.

[0016] The display panel according to the present invention is briefly described below.

[0017] The display panel according to the present invention includes: a transparent substrate, wherein a light-emitting unit of any of the above embodiments is disposed on the transparent substrate.

[0018] The display panel according to the present invention includes the light-emitting unit described in any of the above embodiments. Since the display panel according to the present invention includes the light-emitting unit described in any of the above embodiments, the light-emitting unit of the display panel according to the present invention has transparency, allowing some light to pass through, thereby improving the transmittance of the display panel and resulting in a good transparent display effect.

[0019] According to some embodiments of the present invention, the light-emitting unit is constructed in multiple ways, and the light-emitting unit includes at least a first light-emitting unit, a second light-emitting unit, and a third light-emitting unit; the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit are arranged in sequence and are respectively adapted to emit primary color light of different colors, the first light-emitting unit, the second light-emitting unit, and the third light-emitting unit form a pixel unit, and the pixel unit is adapted to selectively emit light of any color.

[0020] The display device according to the present invention is briefly described below.

[0021] The display device according to the present invention includes the display panel described in any of the above embodiments. Since the display device according to the present invention includes the display panel described in any of the above embodiments, the display panel of the display device according to the present invention has good transparency and display effect, which can improve the user experience of the display device. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of a light-emitting unit according to an embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional view of a light-emitting unit according to an embodiment of the present invention;

[0025] Figure 3 This is a cross-sectional view of a light-emitting unit according to another embodiment of the present invention;

[0026] Figure 4 This is a cross-sectional view of a pixel unit according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of a display panel according to an embodiment of the present invention.

[0028] Figure label:

[0029] Display panel 1;

[0030] Light-emitting unit 10;

[0031] Pixel slot 101, first sidewall 1011, second sidewall 1012;

[0032] Light-emitting component 102, light-transmitting and reflective component 103, light-reflecting component 104, light-blocking component 105, driving circuit 106;

[0033] Scatterer 107, scattering particle 1071;

[0034] First light-emitting unit 110, second light-emitting unit 120, third light-emitting unit 130;

[0035] Transparent substrate 11. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar items or items having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] The following is for reference. Figures 1-5 The light-emitting unit 10 according to an embodiment of the present invention is described.

[0038] like Figures 1-3 As shown, the light-emitting unit 10 according to the present invention is used in a display panel 1. The light-emitting unit 10 includes a pixel groove 101, a light-emitting element 102, and a reflective element 103. The light-emitting element 102 is disposed on at least a portion of the sidewall of the pixel groove 101 and is adapted to emit characteristic light. The reflective element 103 covers the bottom wall of the pixel groove 101 and is adapted to reflect the characteristic light and allow other light to pass through.

[0039] The light-emitting unit 10 of this application is used in the display panel 1. The light-emitting unit 10 is a sub-pixel structure on the display panel 1, which can emit light of one color. As part of the pixel structure, it can cooperate with other sub-pixel structures to make the pixel structure emit light of any color to form the smallest imaging unit (pixel) of the displayed image.

[0040] The characteristic light refers to the light of a specific color that the light-emitting unit 10 can emit. Different light-emitting units 10 can emit different colors of light. For example, in one embodiment, the light-emitting unit 10 is a red light-emitting unit 10, the characteristic light is red light, the light-emitting element 102 is adapted to emit red light, and the reflective element 103 is adapted to reflect red light and allow other colors of light to pass through; in another embodiment, the light-emitting unit 10 can be a blue light-emitting unit 10.

[0041] In related technologies, components with low transparency, such as light-emitting elements and electronic circuits, are stacked in the thickness direction of the display panel to form a sub-pixel structure. The sub-pixel structure has low transparency, and light cannot pass through it.

[0042] The light-emitting unit 10 of this application has a pixel slot 101 and a light-emitting element 102 disposed on the side wall of the pixel slot 101. The light-emitting element 102 can emit characteristic light. By covering the bottom wall of the pixel slot 101 with a reflective element 103, the reflective element 103 can reflect the characteristic light so that the characteristic light is emitted from the opening of the pixel slot 101, thereby making the light-emitting unit 10 emit light in the opening direction of the pixel slot 101; other light can pass through the reflective element 103, thereby making the light-emitting unit 10 translucent and improving the transmittance of the display panel 1.

[0043] In related technologies, the opaque areas of a display panel are formed by sub-pixel structures. The main way to improve the transparency of a display panel is to increase the gap between the sub-pixel structures, which affects the resolution of the display panel and reduces the display effect.

[0044] The light-emitting unit 10 of this application has a light-emitting element 102 disposed on the side wall of the pixel slot 101. The side-mounted light-emitting element 102 can reduce the light blocking by the light-emitting element 102, thereby reducing the area of ​​the opaque area. In addition, the light-emitting unit 10 has light transmittance, which is beneficial to reduce the gap between the light-emitting units 10 while ensuring the transmittance of the display panel 1, thereby improving the resolution of the display panel 1 and thus improving the display effect of the display panel 1.

[0045] Therefore, by setting a pixel groove 101 and setting the light-emitting element 102 on the side wall of the pixel groove 101, the area of ​​the non-transparent area in the display panel 1 can be reduced. Furthermore, by covering the bottom wall of the pixel groove 101 with a reflective element 103, the reflective element 103 reflects the characteristic light rays so that the characteristic light rays are emitted from the opening of the pixel groove 101, and other light rays can pass through the reflective element 103, making the light-emitting unit 10 translucent, improving the transparency of the display panel 1, and thus enhancing the transparent display effect of the display panel 1.

[0046] According to some embodiments of the present invention, such as Figure 2 As shown, the pixel slot 101 has a first sidewall 1011 and a second sidewall 1012 facing each other, and the light-emitting element 102 is disposed on the first sidewall 1011 and / or the second sidewall 1012. The light-emitting element 102 can be disposed on one sidewall of the pixel slot 101 or on multiple sidewalls of the pixel slot 101. Disposing the light-emitting element 102 on multiple sidewalls of the pixel slot 101 can increase the light-emitting brightness of the light-emitting unit 10.

[0047] In some embodiments, two light-emitting elements 102 are configured, one light-emitting element 102 is disposed on the first sidewall 1011, and the other light-emitting element 102 is disposed on the second sidewall 1012, with the first sidewall 1011 and the second sidewall 1012 facing each other. The two light-emitting elements 102 can emit characteristic light towards each other, increasing the brightness of the light-emitting unit 10 while improving the uniformity of the light, thereby improving the display effect of the display panel 1.

[0048] According to some embodiments of the present invention, such as Figures 1-3 As shown, the light-emitting unit 10 also includes a reflector 104, which is disposed between the light-emitting element 102 and the sidewall of the pixel slot 101, and surrounds the inner periphery of the sidewall of the pixel slot 101. By providing the reflector 104, the reflector 104 can reflect the characteristic light rays incident on the sidewall of the pixel slot 101, reducing optical loss. By surrounding the inner periphery of the sidewall of the pixel slot 101, the reflector 104 and the transflector 103 define a reflection space for the characteristic light rays. When the characteristic light rays propagate to the reflector 104 or the transflector 103 within the reflection space, they will be reflected, so that the characteristic light rays can only exit from the opening of the pixel slot 101 to leave the reflection space, thereby improving the light emission brightness of the light-emitting unit 10.

[0049] According to some embodiments of the present invention, such as Figures 1-3 As shown, the light-emitting unit 10 also includes a light-blocking member 105. The light-blocking member 105 is disposed between the reflector 104 and the side wall of the pixel slot 101. The light-blocking member 105 is arranged around the inner periphery of the side wall of the pixel slot 101 and is suitable for blocking external stray light. By disposing the light-blocking member 105 between the reflector 104 and the side wall of the pixel slot 101, the light-blocking member 105 can block the light passing through the side wall of the pixel slot 101 and incident into the pixel slot 101 outside the reflection space, reducing the interference of external stray light on the characteristic light, reducing glare, and improving the imaging quality and viewing comfort of the display panel 1.

[0050] According to some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the light-emitting unit 10 further includes a driving circuit 106, which covers at least a portion of the outer periphery of the light-emitting element 102 and is adapted to supply power to the light-emitting element 102. The driving circuit 106 can drive the light-emitting element 102 to emit light. By providing the driving circuit 106, the circuit on / off of the light-emitting element 102 can be controlled by controlling the on / off state of the driving circuit 106.

[0051] Specifically, the driving circuit 106 covers at least a portion of the outer periphery of the light-emitting element 102, and the arrangement of the driving circuit 106 is adapted to the arrangement of the light-emitting element 102. For example, two light-emitting elements 102 are constructed, one light-emitting element 102 is disposed on the first sidewall 1011, and the other light-emitting element 102 is disposed on the second sidewall 1012; adaptably, the first sidewall 1011 is provided with the first driving circuit 106, and the second sidewall 1012 is provided with the second driving circuit 106, to meet the light-emitting requirements of the two light-emitting elements 102. On the other hand, the first driving circuit 106 and the second driving circuit 106 can be controlled to be switched on and off independently, so that the brightness of the light-emitting unit 10 is adjustable. When the first driving circuit 106 and the second driving circuit 106 are both kept on, the light-emitting unit 10 has a stronger light-emitting brightness; when only one of the circuits in the first driving circuit 106 and the second driving circuit 106 is kept on, the light-emitting unit 10 has a weaker light-emitting brightness.

[0052] According to some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the light-emitting unit 10 also includes a scatterer 107, which is housed within the pixel slot 101 and is adapted to scatter feature light. By providing the scatterer 107, feature light will be scattered when it propagates to the scatterer 107, thereby uniformly diffusing the feature light and improving the light emission uniformity of the light-emitting unit 10.

[0053] According to some embodiments of the present invention, such as Figure 2 and Figure 3 As shown, the scatterer 107 is composed of scattering particles 1071, which fill the pixel slot 101. The scattering particles 1071 can be particles with large surface curvature, causing the characteristic light rays propagating to the surface of the scattering particles 1071 to scatter. By filling the pixel slot 101 with scattering particles 1071, the characteristic light rays can be uniformly diffused in the reflection space, improving the light emission uniformity of the light-emitting unit 10. Specifically, the scatterer 107 can include a transparent body and scattering particles 1071. The transparent body is disposed in the pixel slot 101, and the scattering particles 1071 are filled in the transparent body, improving feasibility. In particular, the transparent body can be used for surface leveling, and the surface of the transparent body can be used as the inner surface of the pixel slot 101. The flatness of the transparent body surface is equivalent to the flatness of the inner surface of the pixel slot 101.

[0054] The display panel 1 according to the present invention is briefly described below.

[0055] like Figure 4 and Figure 5As shown, the display panel 1 according to the present invention includes a transparent substrate 11, on which a light-emitting unit 10 of any of the above embodiments is disposed. The transparent substrate 11 is a substrate with high transparency, which can improve the transmittance of the display panel 1, thereby making the display panel 1 present a transparent display effect.

[0056] The display panel 1 according to the present invention includes the light-emitting unit 10 in any of the above embodiments. Since the display panel 1 according to the present invention includes the light-emitting unit 10 in any of the above embodiments, the light-emitting unit 10 of the display panel 1 according to the present invention has transparency, allowing some light to pass through, thereby improving the transmittance of the display panel 1 and resulting in a good transparent display effect of the display panel 1.

[0057] According to some embodiments of the present invention, such as Figure 4 and Figure 5 As shown, the light-emitting unit is constructed in multiple ways, including at least a first light-emitting unit 110, a second light-emitting unit 120, and a third light-emitting unit 130; the first light-emitting unit 110, the second light-emitting unit 120, and the third light-emitting unit 130 are arranged in sequence and are respectively adapted to emit primary color light of different colors; the first light-emitting unit 110, the second light-emitting unit 120, and the third light-emitting unit 130 form a pixel unit, and the pixel unit is adapted to selectively emit light of any color.

[0058] The first light-emitting unit 110, the second light-emitting unit 120, and the third light-emitting unit 130 are each adapted to emit primary color light of different colors to process one color channel respectively. For example, the first light-emitting unit 110 emits red light, the second light-emitting unit 120 emits green light, and the third light-emitting unit 130 emits blue light. The first light-emitting unit 110, the second light-emitting unit 120, and the third light-emitting unit 130 form a pixel unit, which can selectively emit light of any color. The light emitted by the pixel unit can be emitted by a single light-emitting unit; for example, when the pixel unit emits red light, the first light-emitting unit 110 emits red light, while the second light-emitting unit 120 and the third light-emitting unit 130 do not emit light. The light emitted by the pixel unit can also be composed of light emitted by multiple light-emitting units; for example, when the pixel unit emits white light, the first light-emitting unit 110, the second light-emitting unit 120, and the third light-emitting unit 130 emit light simultaneously to produce white light.

[0059] Specifically, the pixel unit may also include a fourth light-emitting unit, which can emit either a primary color of light or a non-primary color of light. For example, the fourth light-emitting unit can emit white light; when the pixel unit emits white light, the first light-emitting unit 110, the second light-emitting unit 120, and the third light-emitting unit 130 do not emit light, while the fourth light-emitting unit emits white light. The white light emitted by the fourth light-emitting unit provides a better display effect than a mixed white light. Therefore, by setting a fourth light-emitting unit, the display effect of the display panel 1 can be improved.

[0060] The display device according to the present invention is briefly described below.

[0061] The display device according to the present invention includes the display panel 1 in any of the above embodiments. Since the display device according to the present invention includes the display panel 1 in any of the above embodiments, the display panel 1 has good transparency and display effect, thus improving the user experience of the display device.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0064] In the description of this invention, "a plurality of" means two or more.

[0065] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0066] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A light-emitting unit for a display panel, characterized in that, include: Pixel slot (101); A light-emitting element (102) is disposed on at least a portion of the sidewall of the pixel slot (101), and the light-emitting element (102) is adapted to emit characteristic light rays; A reflective element (103) is provided on the bottom wall of the pixel slot (101), and the reflective element (103) is adapted to reflect the feature light and allow other light to pass through.

2. The light-emitting unit for a display panel according to claim 1, characterized in that, The pixel slot (101) has a first sidewall (1011) and a second sidewall (1012) facing each other, and the light-emitting element (102) is disposed on the first sidewall (1011) and / or the second sidewall (1012).

3. The light-emitting unit for a display panel according to claim 1, characterized in that, Also includes: A reflector (104) is disposed between the light-emitting element (102) and the side wall of the pixel groove (101), and the reflector (104) is disposed around the inner periphery of the side wall of the pixel groove (101).

4. The light-emitting unit for a display panel according to claim 3, characterized in that, Also includes: A light-blocking member (105) is disposed between the reflector (104) and the side wall of the pixel groove (101). The light-blocking member (105) is disposed around the inner periphery of the side wall of the pixel groove (101). The light-blocking member (105) is adapted to block external stray light.

5. The light-emitting unit for a display panel according to claim 1, characterized in that, Also includes: A driving circuit (106) is provided, which covers at least a portion of the outer periphery of the light-emitting element (102) and is adapted to supply power to the light-emitting element (102).

6. The light-emitting unit for a display panel according to claim 1, characterized in that, Also includes: A scatterer (107) is housed within the pixel slot (101) and is adapted to scatter the characteristic light rays.

7. The light-emitting unit for a display panel according to claim 6, characterized in that, The scatterer (107) is composed of scattering particles (1071) that fill the pixel slot (101).

8. A display panel, characterized in that, include: A transparent substrate (11) is provided with a light-emitting unit (10) as described in any one of claims 1-7.

9. The display panel according to claim 8, characterized in that, The light-emitting unit is constructed in multiple ways, and the light-emitting unit includes at least a first light-emitting unit (110), a second light-emitting unit (120), and a third light-emitting unit (130); the first light-emitting unit (110), the second light-emitting unit (120), and the third light-emitting unit (130) are arranged in sequence and are respectively adapted to emit primary color light of different colors, the first light-emitting unit (110), the second light-emitting unit (120), and the third light-emitting unit (130) form a pixel unit, and the pixel unit is adapted to selectively emit light of any color.

10. A display device, characterized in that, Includes the display panel (1) as described in any one of claims 8-9.

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